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- Log ----------------------------------------------------------------- commit 4b460571d01c966af01e0ec022bf26cec571738f Author: Michael Tremer michael.tremer@ipfire.org Date: Wed May 31 19:18:21 2017 +0100

strongswan: Update to 5.5.3

Signed-off-by: Michael Tremer michael.tremer@ipfire.org

commit df2dc5a88ff4bb8653656ced1aa1138dd4d49d04 Author: Michael Tremer michael.tremer@ipfire.org Date: Wed May 3 17:55:22 2017 +0100

kernel: Drop support for BTRFS

Signed-off-by: Michael Tremer michael.tremer@ipfire.org

commit d86c5ebbf17d4362141ae75609e3f1c3ea1276ad Author: Michael Tremer michael.tremer@ipfire.org Date: Wed May 3 17:47:03 2017 +0100

btrfs: Drop package

It seems that the project is not very lively and the filesystem has not been adopted at all as it was thought so far.

Signed-off-by: Michael Tremer michael.tremer@ipfire.org

-----------------------------------------------------------------------

Summary of changes: btrfs-progs/btrfs-progs.nm | 51 - .../patches/btrfs-progs-build-everything.patch | 13 - btrfs-progs/patches/btrfs-progs-build-fixes.patch | 36 - btrfs-progs/patches/btrfs-progs-fix-labels.patch | 25 - btrfs-progs/patches/btrfs-progs-upstream.patch | 4599 -------------------- btrfs-progs/patches/btrfs-progs-valgrind.patch | 200 - kernel/config-arm32-generic | 1 + kernel/config-generic | 8 +- kernel/kernel.nm | 2 +- strongswan/strongswan.nm | 2 +- 10 files changed, 5 insertions(+), 4932 deletions(-) delete mode 100644 btrfs-progs/btrfs-progs.nm delete mode 100644 btrfs-progs/patches/btrfs-progs-build-everything.patch delete mode 100644 btrfs-progs/patches/btrfs-progs-build-fixes.patch delete mode 100644 btrfs-progs/patches/btrfs-progs-fix-labels.patch delete mode 100644 btrfs-progs/patches/btrfs-progs-upstream.patch delete mode 100644 btrfs-progs/patches/btrfs-progs-valgrind.patch

Difference in files: diff --git a/btrfs-progs/btrfs-progs.nm b/btrfs-progs/btrfs-progs.nm deleted file mode 100644 index 257e6b0..0000000 --- a/btrfs-progs/btrfs-progs.nm +++ /dev/null @@ -1,51 +0,0 @@ -############################################################################### -# IPFire.org - An Open Source Firewall Solution # -# Copyright (C) - IPFire Development Team info@ipfire.org # -############################################################################### - -name = btrfs-progs -version = 0.19 -release = 3 - -groups = System/Filesystems -url = http://btrfs.wiki.kernel.org/index.php/Main_Page -license = GPLv2 -summary = Userspace programs for btrfs. - -description - The btrfs-progs package provides all the userpsace programs needed to create, \ - check, modify and correct any inconsistencies in the btrfs filesystem. -end - -sources = %{thisapp}.tar.bz2 - -patches = btrfs-progs-upstream.patch -patches += btrfs-progs-fix-labels.patch -patches += btrfs-progs-build-everything.patch -patches += btrfs-progs-valgrind.patch -patches += btrfs-progs-build-fixes.patch - -build - requires - e2fsprogs-devel - libacl-devel - libuuid-devel - zlib-devel - end - - build - make CFLAGS="%{CFLAGS}" LDFLAGS="%{LDFLAGS} -lcom_err" all convert - end - - install - make bindir=%{BUILDROOT}%{sbindir} mandir=%{BUILDROOT}%{datadir} install - end -end - -packages - package %{name} - - package %{name}-debuginfo - template DEBUGINFO - end -end diff --git a/btrfs-progs/patches/btrfs-progs-build-everything.patch b/btrfs-progs/patches/btrfs-progs-build-everything.patch deleted file mode 100644 index ed17381..0000000 --- a/btrfs-progs/patches/btrfs-progs-build-everything.patch +++ /dev/null @@ -1,13 +0,0 @@ -diff -up btrfs-progs-0.19/Makefile.build btrfs-progs-0.19/Makefile ---- btrfs-progs-0.19/Makefile.build 2011-08-05 14:06:29.871749619 -0400 -+++ btrfs-progs-0.19/Makefile 2011-08-05 14:06:45.419727708 -0400 -@@ -17,8 +17,7 @@ bindir = $(prefix)/bin - LIBS=-luuid - - progs = btrfsctl mkfs.btrfs btrfs-debug-tree btrfs-show btrfs-vol btrfsck \ -- btrfs \ -- btrfs-map-logical -+ btrfs btrfs-map-logical btrfstune btrfs-image btrfs-zero-log - - # make C=1 to enable sparse - ifdef C diff --git a/btrfs-progs/patches/btrfs-progs-build-fixes.patch b/btrfs-progs/patches/btrfs-progs-build-fixes.patch deleted file mode 100644 index a78b451..0000000 --- a/btrfs-progs/patches/btrfs-progs-build-fixes.patch +++ /dev/null @@ -1,36 +0,0 @@ -diff --git a/btrfsck.c b/btrfsck.c -index 63e44d1..1e040c4 100644 ---- a/btrfsck.c -+++ b/btrfsck.c -@@ -22,7 +22,9 @@ - #include <stdlib.h> - #include <unistd.h> - #include <fcntl.h> -+#include <sys/types.h> - #include <sys/stat.h> -+#include <unistd.h> - #include "kerncompat.h" - #include "ctree.h" - #include "disk-io.h" -diff --git a/mkfs.c b/mkfs.c -index 2e99b95..638f4c2 100644 ---- a/mkfs.c -+++ b/mkfs.c -@@ -348,7 +348,7 @@ int main(int ac, char **av) - u64 alloc_start = 0; - u64 metadata_profile = BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_DUP; - u64 data_profile = BTRFS_BLOCK_GROUP_RAID0; -- u32 leafsize = getpagesize(); -+ u32 leafsize = sysconf(_SC_PAGESIZE); - u32 sectorsize = 4096; - u32 nodesize = leafsize; - u32 stripesize = 4096; -@@ -405,7 +405,7 @@ int main(int ac, char **av) - print_usage(); - } - } -- sectorsize = max(sectorsize, (u32)getpagesize()); -+ sectorsize = max(sectorsize, (u32)sysconf(_SC_PAGESIZE)); - if (leafsize < sectorsize || (leafsize & (sectorsize - 1))) { - fprintf(stderr, "Illegal leafsize %u\n", leafsize); - exit(1); diff --git a/btrfs-progs/patches/btrfs-progs-fix-labels.patch b/btrfs-progs/patches/btrfs-progs-fix-labels.patch deleted file mode 100644 index 92a52e4..0000000 --- a/btrfs-progs/patches/btrfs-progs-fix-labels.patch +++ /dev/null @@ -1,25 +0,0 @@ -diff --git a/mkfs.c b/mkfs.c -index d664254..138bcc9 100644 ---- a/mkfs.c -+++ b/mkfs.c -@@ -294,7 +294,6 @@ static u64 parse_profile(char *s) - - static char *parse_label(char *input) - { -- int i; - int len = strlen(input); - - if (len > BTRFS_LABEL_SIZE) { -@@ -302,12 +301,6 @@ static char *parse_label(char *input) - BTRFS_LABEL_SIZE); - exit(1); - } -- for (i = 0; i < len; i++) { -- if (input[i] == '/' || input[i] == '\') { -- fprintf(stderr, "invalid label %s\n", input); -- exit(1); -- } -- } - return strdup(input); - } - diff --git a/btrfs-progs/patches/btrfs-progs-upstream.patch b/btrfs-progs/patches/btrfs-progs-upstream.patch deleted file mode 100644 index e81558f..0000000 --- a/btrfs-progs/patches/btrfs-progs-upstream.patch +++ /dev/null @@ -1,4599 +0,0 @@ -diff --git a/Makefile b/Makefile -index 8097b5a..6e6f6c6 100644 ---- a/Makefile -+++ b/Makefile -@@ -4,7 +4,7 @@ CFLAGS = -g -Werror -Os - objects = ctree.o disk-io.o radix-tree.o extent-tree.o print-tree.o \ - root-tree.o dir-item.o file-item.o inode-item.o \ - inode-map.o crc32c.o rbtree.o extent-cache.o extent_io.o \ -- volumes.o utils.o -+ volumes.o utils.o btrfs-list.o - - # - CHECKFLAGS=-D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise \ -@@ -16,7 +16,9 @@ prefix ?= /usr/local - bindir = $(prefix)/bin - LIBS=-luuid - --progs = btrfsctl mkfs.btrfs btrfs-debug-tree btrfs-show btrfs-vol btrfsck -+progs = btrfsctl mkfs.btrfs btrfs-debug-tree btrfs-show btrfs-vol btrfsck \ -+ btrfs \ -+ btrfs-map-logical - - # make C=1 to enable sparse - ifdef C -@@ -35,6 +37,10 @@ all: version $(progs) manpages - version: - bash version.sh - -+btrfs: $(objects) btrfs.o btrfs_cmds.o -+ gcc $(CFLAGS) -o btrfs btrfs.o btrfs_cmds.o \ -+ $(objects) $(LDFLAGS) $(LIBS) -+ - btrfsctl: $(objects) btrfsctl.o - gcc $(CFLAGS) -o btrfsctl btrfsctl.o $(objects) $(LDFLAGS) $(LIBS) - -@@ -53,9 +59,15 @@ mkfs.btrfs: $(objects) mkfs.o - btrfs-debug-tree: $(objects) debug-tree.o - gcc $(CFLAGS) -o btrfs-debug-tree $(objects) debug-tree.o $(LDFLAGS) $(LIBS) - -+btrfs-zero-log: $(objects) btrfs-zero-log.o -+ gcc $(CFLAGS) -o btrfs-zero-log $(objects) btrfs-zero-log.o $(LDFLAGS) $(LIBS) -+ - btrfstune: $(objects) btrfstune.o - gcc $(CFLAGS) -o btrfstune $(objects) btrfstune.o $(LDFLAGS) $(LIBS) - -+btrfs-map-logical: $(objects) btrfs-map-logical.o -+ gcc $(CFLAGS) -o btrfs-map-logical $(objects) btrfs-map-logical.o $(LDFLAGS) $(LIBS) -+ - btrfs-image: $(objects) btrfs-image.o - gcc $(CFLAGS) -o btrfs-image $(objects) btrfs-image.o -lpthread -lz $(LDFLAGS) $(LIBS) - -@@ -66,7 +78,10 @@ quick-test: $(objects) quick-test.o - gcc $(CFLAGS) -o quick-test $(objects) quick-test.o $(LDFLAGS) $(LIBS) - - convert: $(objects) convert.o -- gcc $(CFLAGS) -o btrfs-convert $(objects) convert.o -lext2fs $(LDFLAGS) $(LIBS) -+ gcc $(CFLAGS) -o btrfs-convert $(objects) convert.o -lext2fs -lcom_err $(LDFLAGS) $(LIBS) -+ -+ioctl-test: $(objects) ioctl-test.o -+ gcc $(CFLAGS) -o ioctl-test $(objects) ioctl-test.o $(LDFLAGS) $(LIBS) - - manpages: - cd man; make -diff --git a/btrfs-defrag.c b/btrfs-defrag.c -new file mode 100644 -index 0000000..8f1525a ---- /dev/null -+++ b/btrfs-defrag.c -@@ -0,0 +1,39 @@ -+/* -+ * Copyright (C) 2010 Oracle. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public -+ * License v2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public -+ * License along with this program; if not, write to the -+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, -+ * Boston, MA 021110-1307, USA. -+ */ -+ -+#ifndef __CHECKER__ -+#include <sys/ioctl.h> -+#include <sys/mount.h> -+#include "ioctl.h" -+#endif -+#include <stdio.h> -+#include <stdlib.h> -+#include <sys/types.h> -+#include <sys/stat.h> -+#include <fcntl.h> -+#include <ctype.h> -+#include <unistd.h> -+#include <dirent.h> -+#include <libgen.h> -+#include <getopt.h> -+#include "kerncompat.h" -+#include "ctree.h" -+#include "transaction.h" -+#include "utils.h" -+#include "version.h" -+ -diff --git a/btrfs-list.c b/btrfs-list.c -new file mode 100644 -index 0000000..93766a8 ---- /dev/null -+++ b/btrfs-list.c -@@ -0,0 +1,835 @@ -+/* -+ * Copyright (C) 2010 Oracle. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public -+ * License v2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public -+ * License along with this program; if not, write to the -+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, -+ * Boston, MA 021110-1307, USA. -+ */ -+ -+#define _GNU_SOURCE -+#ifndef __CHECKER__ -+#include <sys/ioctl.h> -+#include <sys/mount.h> -+#include "ioctl.h" -+#endif -+#include <stdio.h> -+#include <stdlib.h> -+#include <sys/types.h> -+#include <sys/stat.h> -+#include <fcntl.h> -+#include <unistd.h> -+#include <dirent.h> -+#include <libgen.h> -+#include "kerncompat.h" -+#include "ctree.h" -+#include "transaction.h" -+#include "utils.h" -+#include "version.h" -+ -+/* we store all the roots we find in an rbtree so that we can -+ * search for them later. -+ */ -+struct root_lookup { -+ struct rb_root root; -+}; -+ -+/* -+ * one of these for each root we find. -+ */ -+struct root_info { -+ struct rb_node rb_node; -+ -+ /* this root's id */ -+ u64 root_id; -+ -+ /* the id of the root that references this one */ -+ u64 ref_tree; -+ -+ /* the dir id we're in from ref_tree */ -+ u64 dir_id; -+ -+ /* path from the subvol we live in to this root, including the -+ * root's name. This is null until we do the extra lookup ioctl. -+ */ -+ char *path; -+ -+ /* the name of this root in the directory it lives in */ -+ char name[]; -+}; -+ -+static void root_lookup_init(struct root_lookup *tree) -+{ -+ tree->root.rb_node = NULL; -+} -+ -+static int comp_entry(struct root_info *entry, u64 root_id, u64 ref_tree) -+{ -+ if (entry->root_id > root_id) -+ return 1; -+ if (entry->root_id < root_id) -+ return -1; -+ if (entry->ref_tree > ref_tree) -+ return 1; -+ if (entry->ref_tree < ref_tree) -+ return -1; -+ return 0; -+} -+ -+/* -+ * insert a new root into the tree. returns the existing root entry -+ * if one is already there. Both root_id and ref_tree are used -+ * as the key -+ */ -+static struct rb_node *tree_insert(struct rb_root *root, u64 root_id, -+ u64 ref_tree, struct rb_node *node) -+{ -+ struct rb_node ** p = &root->rb_node; -+ struct rb_node * parent = NULL; -+ struct root_info *entry; -+ int comp; -+ -+ while(*p) { -+ parent = *p; -+ entry = rb_entry(parent, struct root_info, rb_node); -+ -+ comp = comp_entry(entry, root_id, ref_tree); -+ -+ if (comp < 0) -+ p = &(*p)->rb_left; -+ else if (comp > 0) -+ p = &(*p)->rb_right; -+ else -+ return parent; -+ } -+ -+ entry = rb_entry(parent, struct root_info, rb_node); -+ rb_link_node(node, parent, p); -+ rb_insert_color(node, root); -+ return NULL; -+} -+ -+/* -+ * find a given root id in the tree. We return the smallest one, -+ * rb_next can be used to move forward looking for more if required -+ */ -+static struct root_info *tree_search(struct rb_root *root, u64 root_id) -+{ -+ struct rb_node * n = root->rb_node; -+ struct root_info *entry; -+ -+ while(n) { -+ entry = rb_entry(n, struct root_info, rb_node); -+ -+ if (entry->root_id < root_id) -+ n = n->rb_left; -+ else if (entry->root_id > root_id) -+ n = n->rb_right; -+ else { -+ struct root_info *prev; -+ struct rb_node *prev_n; -+ while (1) { -+ prev_n = rb_prev(n); -+ if (!prev_n) -+ break; -+ prev = rb_entry(prev_n, struct root_info, -+ rb_node); -+ if (prev->root_id != root_id) -+ break; -+ entry = prev; -+ n = prev_n; -+ } -+ return entry; -+ } -+ } -+ return NULL; -+} -+ -+/* -+ * this allocates a new root in the lookup tree. -+ * -+ * root_id should be the object id of the root -+ * -+ * ref_tree is the objectid of the referring root. -+ * -+ * dir_id is the directory in ref_tree where this root_id can be found. -+ * -+ * name is the name of root_id in that directory -+ * -+ * name_len is the length of name -+ */ -+static int add_root(struct root_lookup *root_lookup, -+ u64 root_id, u64 ref_tree, u64 dir_id, char *name, -+ int name_len) -+{ -+ struct root_info *ri; -+ struct rb_node *ret; -+ ri = malloc(sizeof(*ri) + name_len + 1); -+ if (!ri) { -+ printf("memory allocation failed\n"); -+ exit(1); -+ } -+ memset(ri, 0, sizeof(*ri) + name_len + 1); -+ ri->path = NULL; -+ ri->dir_id = dir_id; -+ ri->root_id = root_id; -+ ri->ref_tree = ref_tree; -+ strncpy(ri->name, name, name_len); -+ -+ ret = tree_insert(&root_lookup->root, root_id, ref_tree, &ri->rb_node); -+ if (ret) { -+ printf("failed to insert tree %llu\n", (unsigned long long)root_id); -+ exit(1); -+ } -+ return 0; -+} -+ -+/* -+ * for a given root_info, search through the root_lookup tree to construct -+ * the full path name to it. -+ * -+ * This can't be called until all the root_info->path fields are filled -+ * in by lookup_ino_path -+ */ -+static int resolve_root(struct root_lookup *rl, struct root_info *ri) -+{ -+ u64 top_id; -+ char *full_path = NULL; -+ int len = 0; -+ struct root_info *found; -+ -+ /* -+ * we go backwards from the root_info object and add pathnames -+ * from parent directories as we go. -+ */ -+ found = ri; -+ while (1) { -+ char *tmp; -+ u64 next; -+ int add_len = strlen(found->path); -+ -+ /* room for / and for null */ -+ tmp = malloc(add_len + 2 + len); -+ if (full_path) { -+ memcpy(tmp + add_len + 1, full_path, len); -+ tmp[add_len] = '/'; -+ memcpy(tmp, found->path, add_len); -+ tmp [add_len + len + 1] = '\0'; -+ free(full_path); -+ full_path = tmp; -+ len += add_len + 1; -+ } else { -+ full_path = strdup(found->path); -+ len = add_len; -+ } -+ -+ next = found->ref_tree; -+ /* if the ref_tree refers to ourselves, we're at the top */ -+ if (next == found->root_id) { -+ top_id = next; -+ break; -+ } -+ -+ /* -+ * if the ref_tree wasn't in our tree of roots, we're -+ * at the top -+ */ -+ found = tree_search(&rl->root, next); -+ if (!found) { -+ top_id = next; -+ break; -+ } -+ } -+ printf("ID %llu top level %llu path %s\n", ri->root_id, top_id, -+ full_path); -+ free(full_path); -+ return 0; -+} -+ -+/* -+ * for a single root_info, ask the kernel to give us a path name -+ * inside it's ref_root for the dir_id where it lives. -+ * -+ * This fills in root_info->path with the path to the directory and and -+ * appends this root's name. -+ */ -+static int lookup_ino_path(int fd, struct root_info *ri) -+{ -+ struct btrfs_ioctl_ino_lookup_args args; -+ int ret; -+ -+ if (ri->path) -+ return 0; -+ -+ memset(&args, 0, sizeof(args)); -+ args.treeid = ri->ref_tree; -+ args.objectid = ri->dir_id; -+ -+ ret = ioctl(fd, BTRFS_IOC_INO_LOOKUP, &args); -+ if (ret) { -+ fprintf(stderr, "ERROR: Failed to lookup path for root %llu\n", -+ (unsigned long long)ri->ref_tree); -+ return ret; -+ } -+ -+ if (args.name[0]) { -+ /* -+ * we're in a subdirectory of ref_tree, the kernel ioctl -+ * puts a / in there for us -+ */ -+ ri->path = malloc(strlen(ri->name) + strlen(args.name) + 1); -+ if (!ri->path) { -+ perror("malloc failed"); -+ exit(1); -+ } -+ strcpy(ri->path, args.name); -+ strcat(ri->path, ri->name); -+ } else { -+ /* we're at the root of ref_tree */ -+ ri->path = strdup(ri->name); -+ if (!ri->path) { -+ perror("strdup failed"); -+ exit(1); -+ } -+ } -+ return 0; -+} -+ -+/* finding the generation for a given path is a two step process. -+ * First we use the inode loookup routine to find out the root id -+ * -+ * Then we use the tree search ioctl to scan all the root items for a -+ * given root id and spit out the latest generation we can find -+ */ -+static u64 find_root_gen(int fd) -+{ -+ struct btrfs_ioctl_ino_lookup_args ino_args; -+ int ret; -+ struct btrfs_ioctl_search_args args; -+ struct btrfs_ioctl_search_key *sk = &args.key; -+ struct btrfs_ioctl_search_header *sh; -+ unsigned long off = 0; -+ u64 max_found = 0; -+ int i; -+ -+ memset(&ino_args, 0, sizeof(ino_args)); -+ ino_args.objectid = BTRFS_FIRST_FREE_OBJECTID; -+ -+ /* this ioctl fills in ino_args->treeid */ -+ ret = ioctl(fd, BTRFS_IOC_INO_LOOKUP, &ino_args); -+ if (ret) { -+ fprintf(stderr, "ERROR: Failed to lookup path for dirid %llu\n", -+ (unsigned long long)BTRFS_FIRST_FREE_OBJECTID); -+ return 0; -+ } -+ -+ memset(&args, 0, sizeof(args)); -+ -+ sk->tree_id = 1; -+ -+ /* -+ * there may be more than one ROOT_ITEM key if there are -+ * snapshots pending deletion, we have to loop through -+ * them. -+ */ -+ sk->min_objectid = ino_args.treeid; -+ sk->max_objectid = ino_args.treeid; -+ sk->max_type = BTRFS_ROOT_ITEM_KEY; -+ sk->min_type = BTRFS_ROOT_ITEM_KEY; -+ sk->max_offset = (u64)-1; -+ sk->max_transid = (u64)-1; -+ sk->nr_items = 4096; -+ -+ while (1) { -+ ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args); -+ if (ret < 0) { -+ fprintf(stderr, "ERROR: can't perform the search\n"); -+ return 0; -+ } -+ /* the ioctl returns the number of item it found in nr_items */ -+ if (sk->nr_items == 0) -+ break; -+ -+ off = 0; -+ for (i = 0; i < sk->nr_items; i++) { -+ struct btrfs_root_item *item; -+ sh = (struct btrfs_ioctl_search_header *)(args.buf + -+ off); -+ -+ off += sizeof(*sh); -+ item = (struct btrfs_root_item *)(args.buf + off); -+ off += sh->len; -+ -+ sk->min_objectid = sh->objectid; -+ sk->min_type = sh->type; -+ sk->min_offset = sh->offset; -+ -+ if (sh->objectid > ino_args.treeid) -+ break; -+ -+ if (sh->objectid == ino_args.treeid && -+ sh->type == BTRFS_ROOT_ITEM_KEY) { -+ max_found = max(max_found, -+ btrfs_root_generation(item)); -+ } -+ } -+ if (sk->min_offset < (u64)-1) -+ sk->min_offset++; -+ else -+ break; -+ -+ if (sk->min_type != BTRFS_ROOT_ITEM_KEY) -+ break; -+ if (sk->min_objectid != BTRFS_ROOT_ITEM_KEY) -+ break; -+ } -+ return max_found; -+} -+ -+/* pass in a directory id and this will return -+ * the full path of the parent directory inside its -+ * subvolume root. -+ * -+ * It may return NULL if it is in the root, or an ERR_PTR if things -+ * go badly. -+ */ -+static char *__ino_resolve(int fd, u64 dirid) -+{ -+ struct btrfs_ioctl_ino_lookup_args args; -+ int ret; -+ char *full; -+ -+ memset(&args, 0, sizeof(args)); -+ args.objectid = dirid; -+ -+ ret = ioctl(fd, BTRFS_IOC_INO_LOOKUP, &args); -+ if (ret) { -+ fprintf(stderr, "ERROR: Failed to lookup path for dirid %llu\n", -+ (unsigned long long)dirid); -+ return ERR_PTR(ret); -+ } -+ -+ if (args.name[0]) { -+ /* -+ * we're in a subdirectory of ref_tree, the kernel ioctl -+ * puts a / in there for us -+ */ -+ full = strdup(args.name); -+ if (!full) { -+ perror("malloc failed"); -+ return ERR_PTR(-ENOMEM); -+ } -+ } else { -+ /* we're at the root of ref_tree */ -+ full = NULL; -+ } -+ return full; -+} -+ -+/* -+ * simple string builder, returning a new string with both -+ * dirid and name -+ */ -+char *build_name(char *dirid, char *name) -+{ -+ char *full; -+ if (!dirid) -+ return strdup(name); -+ -+ full = malloc(strlen(dirid) + strlen(name) + 1); -+ if (!full) -+ return NULL; -+ strcpy(full, dirid); -+ strcat(full, name); -+ return full; -+} -+ -+/* -+ * given an inode number, this returns the full path name inside the subvolume -+ * to that file/directory. cache_dirid and cache_name are used to -+ * cache the results so we can avoid tree searches if a later call goes -+ * to the same directory or file name -+ */ -+static char *ino_resolve(int fd, u64 ino, u64 *cache_dirid, char **cache_name) -+ -+{ -+ u64 dirid; -+ char *dirname; -+ char *name; -+ char *full; -+ int ret; -+ struct btrfs_ioctl_search_args args; -+ struct btrfs_ioctl_search_key *sk = &args.key; -+ struct btrfs_ioctl_search_header *sh; -+ unsigned long off = 0; -+ int namelen; -+ -+ memset(&args, 0, sizeof(args)); -+ -+ sk->tree_id = 0; -+ -+ /* -+ * step one, we search for the inode back ref. We just use the first -+ * one -+ */ -+ sk->min_objectid = ino; -+ sk->max_objectid = ino; -+ sk->max_type = BTRFS_INODE_REF_KEY; -+ sk->max_offset = (u64)-1; -+ sk->min_type = BTRFS_INODE_REF_KEY; -+ sk->max_transid = (u64)-1; -+ sk->nr_items = 1; -+ -+ ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args); -+ if (ret < 0) { -+ fprintf(stderr, "ERROR: can't perform the search\n"); -+ return NULL; -+ } -+ /* the ioctl returns the number of item it found in nr_items */ -+ if (sk->nr_items == 0) -+ return NULL; -+ -+ off = 0; -+ sh = (struct btrfs_ioctl_search_header *)(args.buf + off); -+ -+ if (sh->type == BTRFS_INODE_REF_KEY) { -+ struct btrfs_inode_ref *ref; -+ dirid = sh->offset; -+ -+ ref = (struct btrfs_inode_ref *)(sh + 1); -+ namelen = btrfs_stack_inode_ref_name_len(ref); -+ -+ name = (char *)(ref + 1); -+ name = strndup(name, namelen); -+ -+ /* use our cached value */ -+ if (dirid == *cache_dirid && *cache_name) { -+ dirname = *cache_name; -+ goto build; -+ } -+ } else { -+ return NULL; -+ } -+ /* -+ * the inode backref gives us the file name and the parent directory id. -+ * From here we use __ino_resolve to get the path to the parent -+ */ -+ dirname = __ino_resolve(fd, dirid); -+build: -+ full = build_name(dirname, name); -+ if (*cache_name && dirname != *cache_name) -+ free(*cache_name); -+ -+ *cache_name = dirname; -+ *cache_dirid = dirid; -+ free(name); -+ -+ return full; -+} -+ -+int list_subvols(int fd) -+{ -+ struct root_lookup root_lookup; -+ struct rb_node *n; -+ int ret; -+ struct btrfs_ioctl_search_args args; -+ struct btrfs_ioctl_search_key *sk = &args.key; -+ struct btrfs_ioctl_search_header *sh; -+ struct btrfs_root_ref *ref; -+ unsigned long off = 0; -+ int name_len; -+ char *name; -+ u64 dir_id; -+ int i; -+ -+ root_lookup_init(&root_lookup); -+ -+ memset(&args, 0, sizeof(args)); -+ -+ /* search in the tree of tree roots */ -+ sk->tree_id = 1; -+ -+ /* -+ * set the min and max to backref keys. The search will -+ * only send back this type of key now. -+ */ -+ sk->max_type = BTRFS_ROOT_BACKREF_KEY; -+ sk->min_type = BTRFS_ROOT_BACKREF_KEY; -+ -+ /* -+ * set all the other params to the max, we'll take any objectid -+ * and any trans -+ */ -+ sk->max_objectid = (u64)-1; -+ sk->max_offset = (u64)-1; -+ sk->max_transid = (u64)-1; -+ -+ /* just a big number, doesn't matter much */ -+ sk->nr_items = 4096; -+ -+ while(1) { -+ ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args); -+ if (ret < 0) { -+ fprintf(stderr, "ERROR: can't perform the search\n"); -+ return ret; -+ } -+ /* the ioctl returns the number of item it found in nr_items */ -+ if (sk->nr_items == 0) -+ break; -+ -+ off = 0; -+ -+ /* -+ * for each item, pull the key out of the header and then -+ * read the root_ref item it contains -+ */ -+ for (i = 0; i < sk->nr_items; i++) { -+ sh = (struct btrfs_ioctl_search_header *)(args.buf + -+ off); -+ off += sizeof(*sh); -+ if (sh->type == BTRFS_ROOT_BACKREF_KEY) { -+ ref = (struct btrfs_root_ref *)(args.buf + off); -+ name_len = btrfs_stack_root_ref_name_len(ref); -+ name = (char *)(ref + 1); -+ dir_id = btrfs_stack_root_ref_dirid(ref); -+ -+ add_root(&root_lookup, sh->objectid, sh->offset, -+ dir_id, name, name_len); -+ } -+ -+ off += sh->len; -+ -+ /* -+ * record the mins in sk so we can make sure the -+ * next search doesn't repeat this root -+ */ -+ sk->min_objectid = sh->objectid; -+ sk->min_type = sh->type; -+ sk->min_offset = sh->offset; -+ } -+ sk->nr_items = 4096; -+ /* this iteration is done, step forward one root for the next -+ * ioctl -+ */ -+ if (sk->min_objectid < (u64)-1) { -+ sk->min_objectid++; -+ sk->min_type = BTRFS_ROOT_BACKREF_KEY; -+ sk->min_offset = 0; -+ } else -+ break; -+ } -+ /* -+ * now we have an rbtree full of root_info objects, but we need to fill -+ * in their path names within the subvol that is referencing each one. -+ */ -+ n = rb_first(&root_lookup.root); -+ while (n) { -+ struct root_info *entry; -+ int ret; -+ entry = rb_entry(n, struct root_info, rb_node); -+ ret = lookup_ino_path(fd, entry); -+ if(ret < 0) -+ return ret; -+ n = rb_next(n); -+ } -+ -+ /* now that we have all the subvol-relative paths filled in, -+ * we have to string the subvols together so that we can get -+ * a path all the way back to the FS root -+ */ -+ n = rb_last(&root_lookup.root); -+ while (n) { -+ struct root_info *entry; -+ entry = rb_entry(n, struct root_info, rb_node); -+ resolve_root(&root_lookup, entry); -+ n = rb_prev(n); -+ } -+ -+ return ret; -+} -+ -+static int print_one_extent(int fd, struct btrfs_ioctl_search_header *sh, -+ struct btrfs_file_extent_item *item, -+ u64 found_gen, u64 *cache_dirid, -+ char **cache_dir_name, u64 *cache_ino, -+ char **cache_full_name) -+{ -+ u64 len = 0; -+ u64 disk_start = 0; -+ u64 disk_offset = 0; -+ u8 type; -+ int compressed = 0; -+ int flags = 0; -+ char *name = NULL; -+ -+ if (sh->objectid == *cache_ino) { -+ name = *cache_full_name; -+ } else if (*cache_full_name) { -+ free(*cache_full_name); -+ *cache_full_name = NULL; -+ } -+ if (!name) { -+ name = ino_resolve(fd, sh->objectid, cache_dirid, -+ cache_dir_name); -+ *cache_full_name = name; -+ *cache_ino = sh->objectid; -+ } -+ if (!name) -+ return -EIO; -+ -+ type = btrfs_stack_file_extent_type(item); -+ compressed = btrfs_stack_file_extent_compression(item); -+ -+ if (type == BTRFS_FILE_EXTENT_REG || -+ type == BTRFS_FILE_EXTENT_PREALLOC) { -+ disk_start = btrfs_stack_file_extent_disk_bytenr(item); -+ disk_offset = btrfs_stack_file_extent_offset(item); -+ len = btrfs_stack_file_extent_num_bytes(item); -+ } else if (type == BTRFS_FILE_EXTENT_INLINE) { -+ disk_start = 0; -+ disk_offset = 0; -+ len = btrfs_stack_file_extent_ram_bytes(item); -+ } else { -+ printf("unhandled extent type %d for inode %llu " -+ "file offset %llu gen %llu\n", -+ type, -+ (unsigned long long)sh->objectid, -+ (unsigned long long)sh->offset, -+ (unsigned long long)found_gen); -+ -+ return -EIO; -+ } -+ printf("inode %llu file offset %llu len %llu disk start %llu " -+ "offset %llu gen %llu flags ", -+ (unsigned long long)sh->objectid, -+ (unsigned long long)sh->offset, -+ (unsigned long long)len, -+ (unsigned long long)disk_start, -+ (unsigned long long)disk_offset, -+ (unsigned long long)found_gen); -+ -+ if (compressed) { -+ printf("COMPRESS"); -+ flags++; -+ } -+ if (type == BTRFS_FILE_EXTENT_PREALLOC) { -+ printf("%sPREALLOC", flags ? "|" : ""); -+ flags++; -+ } -+ if (type == BTRFS_FILE_EXTENT_INLINE) { -+ printf("%sINLINE", flags ? "|" : ""); -+ flags++; -+ } -+ if (!flags) -+ printf("NONE"); -+ -+ printf(" %s\n", name); -+ return 0; -+} -+ -+int find_updated_files(int fd, u64 root_id, u64 oldest_gen) -+{ -+ int ret; -+ struct btrfs_ioctl_search_args args; -+ struct btrfs_ioctl_search_key *sk = &args.key; -+ struct btrfs_ioctl_search_header *sh; -+ struct btrfs_file_extent_item *item; -+ unsigned long off = 0; -+ u64 found_gen; -+ u64 max_found = 0; -+ int i; -+ u64 cache_dirid = 0; -+ u64 cache_ino = 0; -+ char *cache_dir_name = NULL; -+ char *cache_full_name = NULL; -+ struct btrfs_file_extent_item backup; -+ -+ memset(&backup, 0, sizeof(backup)); -+ memset(&args, 0, sizeof(args)); -+ -+ sk->tree_id = root_id; -+ -+ /* -+ * set all the other params to the max, we'll take any objectid -+ * and any trans -+ */ -+ sk->max_objectid = (u64)-1; -+ sk->max_offset = (u64)-1; -+ sk->max_transid = (u64)-1; -+ sk->max_type = BTRFS_EXTENT_DATA_KEY; -+ sk->min_transid = oldest_gen; -+ /* just a big number, doesn't matter much */ -+ sk->nr_items = 4096; -+ -+ max_found = find_root_gen(fd); -+ while(1) { -+ ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args); -+ if (ret < 0) { -+ fprintf(stderr, "ERROR: can't perform the search\n"); -+ return ret; -+ } -+ /* the ioctl returns the number of item it found in nr_items */ -+ if (sk->nr_items == 0) -+ break; -+ -+ off = 0; -+ -+ /* -+ * for each item, pull the key out of the header and then -+ * read the root_ref item it contains -+ */ -+ for (i = 0; i < sk->nr_items; i++) { -+ sh = (struct btrfs_ioctl_search_header *)(args.buf + -+ off); -+ off += sizeof(*sh); -+ -+ /* -+ * just in case the item was too big, pass something other -+ * than garbage -+ */ -+ if (sh->len == 0) -+ item = &backup; -+ else -+ item = (struct btrfs_file_extent_item *)(args.buf + -+ off); -+ found_gen = btrfs_stack_file_extent_generation(item); -+ if (sh->type == BTRFS_EXTENT_DATA_KEY && -+ found_gen >= oldest_gen) { -+ print_one_extent(fd, sh, item, found_gen, -+ &cache_dirid, &cache_dir_name, -+ &cache_ino, &cache_full_name); -+ } -+ off += sh->len; -+ -+ /* -+ * record the mins in sk so we can make sure the -+ * next search doesn't repeat this root -+ */ -+ sk->min_objectid = sh->objectid; -+ sk->min_offset = sh->offset; -+ sk->min_type = sh->type; -+ } -+ sk->nr_items = 4096; -+ if (sk->min_offset < (u64)-1) -+ sk->min_offset++; -+ else if (sk->min_objectid < (u64)-1) { -+ sk->min_objectid++; -+ sk->min_offset = 0; -+ sk->min_type = 0; -+ } else -+ break; -+ } -+ free(cache_dir_name); -+ free(cache_full_name); -+ printf("transid marker was %llu\n", (unsigned long long)max_found); -+ return ret; -+} -diff --git a/btrfs-map-logical.c b/btrfs-map-logical.c -new file mode 100644 -index 0000000..a109c6a ---- /dev/null -+++ b/btrfs-map-logical.c -@@ -0,0 +1,221 @@ -+/* -+ * Copyright (C) 2009 Oracle. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public -+ * License v2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public -+ * License along with this program; if not, write to the -+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, -+ * Boston, MA 021110-1307, USA. -+ */ -+ -+#define _XOPEN_SOURCE 500 -+#define _GNU_SOURCE 1 -+#include <stdio.h> -+#include <stdlib.h> -+#include <fcntl.h> -+#include <unistd.h> -+#include <getopt.h> -+#include "kerncompat.h" -+#include "ctree.h" -+#include "volumes.h" -+#include "disk-io.h" -+#include "print-tree.h" -+#include "transaction.h" -+#include "list.h" -+#include "version.h" -+ -+/* we write the mirror info to stdout unless they are dumping the data -+ * to stdout -+ * */ -+static FILE *info_file; -+ -+struct extent_buffer *debug_read_block(struct btrfs_root *root, u64 bytenr, -+ u32 blocksize, int copy) -+{ -+ int ret; -+ int dev_nr; -+ struct extent_buffer *eb; -+ u64 length; -+ struct btrfs_multi_bio *multi = NULL; -+ struct btrfs_device *device; -+ int num_copies; -+ int mirror_num = 1; -+ -+ eb = btrfs_find_create_tree_block(root, bytenr, blocksize); -+ if (!eb) -+ return NULL; -+ -+ dev_nr = 0; -+ length = blocksize; -+ while (1) { -+ ret = btrfs_map_block(&root->fs_info->mapping_tree, READ, -+ eb->start, &length, &multi, mirror_num); -+ BUG_ON(ret); -+ device = multi->stripes[0].dev; -+ eb->fd = device->fd; -+ device->total_ios++; -+ eb->dev_bytenr = multi->stripes[0].physical; -+ -+ fprintf(info_file, "mirror %d logical %Lu physical %Lu " -+ "device %s\n", mirror_num, bytenr, eb->dev_bytenr, -+ device->name); -+ kfree(multi); -+ -+ if (!copy || mirror_num == copy) -+ ret = read_extent_from_disk(eb); -+ -+ num_copies = btrfs_num_copies(&root->fs_info->mapping_tree, -+ eb->start, eb->len); -+ if (num_copies == 1) -+ break; -+ -+ mirror_num++; -+ if (mirror_num > num_copies) -+ break; -+ } -+ return eb; -+} -+ -+static void print_usage(void) -+{ -+ fprintf(stderr, "usage: btrfs-map-logical [options] mount_point\n"); -+ fprintf(stderr, "\t-l Logical extent to map\n"); -+ fprintf(stderr, "\t-c Copy of the extent to read (usually 1 or 2)\n"); -+ fprintf(stderr, "\t-o Output file to hold the extent\n"); -+ fprintf(stderr, "\t-s Number of bytes to read\n"); -+ exit(1); -+} -+ -+static struct option long_options[] = { -+ /* { "byte-count", 1, NULL, 'b' }, */ -+ { "logical", 1, NULL, 'l' }, -+ { "copy", 1, NULL, 'c' }, -+ { "output", 1, NULL, 'c' }, -+ { "bytes", 1, NULL, 'b' }, -+ { 0, 0, 0, 0} -+}; -+ -+int main(int ac, char **av) -+{ -+ struct cache_tree root_cache; -+ struct btrfs_root *root; -+ struct extent_buffer *eb; -+ char *dev; -+ char *output_file = NULL; -+ u64 logical = 0; -+ int ret = 0; -+ int option_index = 0; -+ int copy = 0; -+ u64 bytes = 0; -+ int out_fd = 0; -+ int err; -+ -+ while(1) { -+ int c; -+ c = getopt_long(ac, av, "l:c:o:b:", long_options, -+ &option_index); -+ if (c < 0) -+ break; -+ switch(c) { -+ case 'l': -+ logical = atoll(optarg); -+ if (logical == 0) { -+ fprintf(stderr, -+ "invalid extent number\n"); -+ print_usage(); -+ } -+ break; -+ case 'c': -+ copy = atoi(optarg); -+ if (copy == 0) { -+ fprintf(stderr, -+ "invalid copy number\n"); -+ print_usage(); -+ } -+ break; -+ case 'b': -+ bytes = atoll(optarg); -+ if (bytes == 0) { -+ fprintf(stderr, -+ "invalid byte count\n"); -+ print_usage(); -+ } -+ break; -+ case 'o': -+ output_file = strdup(optarg); -+ break; -+ default: -+ print_usage(); -+ } -+ } -+ ac = ac - optind; -+ if (ac == 0) -+ print_usage(); -+ if (logical == 0) -+ print_usage(); -+ if (copy < 0) -+ print_usage(); -+ -+ dev = av[optind]; -+ -+ radix_tree_init(); -+ cache_tree_init(&root_cache); -+ -+ root = open_ctree(dev, 0, 0); -+ if (!root) { -+ fprintf(stderr, "Open ctree failed\n"); -+ exit(1); -+ } -+ -+ if (output_file) { -+ if (strcmp(output_file, "-") == 0) { -+ out_fd = 1; -+ info_file = stderr; -+ } else { -+ out_fd = open(output_file, O_RDWR | O_CREAT, 0600); -+ if (out_fd < 0) -+ goto close; -+ err = ftruncate(out_fd, 0); -+ if (err) { -+ close(out_fd); -+ goto close; -+ } -+ info_file = stdout; -+ } -+ } -+ -+ if (bytes == 0) -+ bytes = root->sectorsize; -+ -+ bytes = (bytes + root->sectorsize - 1) / root->sectorsize; -+ bytes *= root->sectorsize; -+ -+ while (bytes > 0) { -+ eb = debug_read_block(root, logical, root->sectorsize, copy); -+ if (eb && output_file) { -+ err = write(out_fd, eb->data, eb->len); -+ if (err < 0 || err != eb->len) { -+ fprintf(stderr, "output file write failed\n"); -+ goto out_close_fd; -+ } -+ } -+ free_extent_buffer(eb); -+ logical += root->sectorsize; -+ bytes -= root->sectorsize; -+ } -+ -+out_close_fd: -+ if (output_file && out_fd != 1) -+ close(out_fd); -+close: -+ close_ctree(root); -+ return ret; -+} -diff --git a/btrfs-vol.c b/btrfs-vol.c -index 8069778..4ed799d 100644 ---- a/btrfs-vol.c -+++ b/btrfs-vol.c -@@ -108,10 +108,24 @@ int main(int ac, char **av) - if (device && strcmp(device, "missing") == 0 && - cmd == BTRFS_IOC_RM_DEV) { - fprintf(stderr, "removing missing devices from %s\n", mnt); -- } else if (device) { -+ } else if (cmd != BTRFS_IOC_BALANCE) { -+ if (cmd == BTRFS_IOC_ADD_DEV) { -+ ret = check_mounted(device); -+ if (ret < 0) { -+ fprintf(stderr, -+ "error checking %s mount status\n", -+ device); -+ exit(1); -+ } -+ if (ret == 1) { -+ fprintf(stderr, "%s is mounted\n", device); -+ exit(1); -+ } -+ } - devfd = open(device, O_RDWR); -- if (!devfd) { -+ if (devfd < 0) { - fprintf(stderr, "Unable to open device %s\n", device); -+ exit(1); - } - ret = fstat(devfd, &st); - if (ret) { -diff --git a/btrfs-zero-log.c b/btrfs-zero-log.c -new file mode 100644 -index 0000000..f10438b ---- /dev/null -+++ b/btrfs-zero-log.c -@@ -0,0 +1,69 @@ -+/* -+ * Copyright (C) 2007 Oracle. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public -+ * License v2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public -+ * License along with this program; if not, write to the -+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, -+ * Boston, MA 021110-1307, USA. -+ */ -+ -+#define _XOPEN_SOURCE 500 -+#define _GNU_SOURCE 1 -+#include <stdio.h> -+#include <stdlib.h> -+#include <unistd.h> -+#include <fcntl.h> -+#include <sys/stat.h> -+#include "kerncompat.h" -+#include "ctree.h" -+#include "disk-io.h" -+#include "print-tree.h" -+#include "transaction.h" -+#include "list.h" -+#include "version.h" -+#include "utils.h" -+ -+static void print_usage(void) -+{ -+ fprintf(stderr, "usage: btrfs-zero-log dev\n"); -+ fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION); -+ exit(1); -+} -+ -+int main(int ac, char **av) -+{ -+ struct btrfs_root *root; -+ int ret; -+ -+ if (ac != 2) -+ print_usage(); -+ -+ radix_tree_init(); -+ -+ if((ret = check_mounted(av[1])) < 0) { -+ fprintf(stderr, "Could not check mount status: %s\n", strerror(ret)); -+ return ret; -+ } else if(ret) { -+ fprintf(stderr, "%s is currently mounted. Aborting.\n", av[1]); -+ return -EBUSY; -+ } -+ -+ root = open_ctree(av[1], 0, 1); -+ -+ if (root == NULL) -+ return 1; -+ -+ btrfs_set_super_log_root(&root->fs_info->super_copy, 0); -+ btrfs_set_super_log_root_level(&root->fs_info->super_copy, 0); -+ close_ctree(root); -+ return ret; -+} -diff --git a/btrfs.c b/btrfs.c -new file mode 100644 -index 0000000..46314cf ---- /dev/null -+++ b/btrfs.c -@@ -0,0 +1,387 @@ -+/* -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public -+ * License v2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public -+ * License along with this program; if not, write to the -+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, -+ * Boston, MA 021110-1307, USA. -+ */ -+ -+#define _GNU_SOURCE -+#include <stdio.h> -+#include <stdlib.h> -+#include <string.h> -+ -+#include "kerncompat.h" -+#include "btrfs_cmds.h" -+#include "version.h" -+ -+typedef int (*CommandFunction)(int argc, char **argv); -+ -+struct Command { -+ CommandFunction func; /* function which implements the command */ -+ int nargs; /* if == 999, any number of arguments -+ if >= 0, number of arguments, -+ if < 0, _minimum_ number of arguments */ -+ char *verb; /* verb */ -+ char *help; /* help lines; form the 2nd onward they are -+ indented */ -+ -+ /* the following fields are run-time filled by the program */ -+ char **cmds; /* array of subcommands */ -+ int ncmds; /* number of subcommand */ -+}; -+ -+static struct Command commands[] = { -+ -+ /* -+ avoid short commands different for the case only -+ */ -+ { do_clone, 2, -+ "subvolume snapshot", "<source> [<dest>/]<name>\n" -+ "Create a writable snapshot of the subvolume <source> with\n" -+ "the name <name> in the <dest> directory." -+ }, -+ { do_delete_subvolume, 1, -+ "subvolume delete", "<subvolume>\n" -+ "Delete the subvolume <subvolume>." -+ }, -+ { do_create_subvol, 1, -+ "subvolume create", "[<dest>/]<name>\n" -+ "Create a subvolume in <dest> (or the current directory if\n" -+ "not passed)." -+ }, -+ { do_subvol_list, 1, "subvolume list", "<path>\n" -+ "List the snapshot/subvolume of a filesystem." -+ }, -+ { do_find_newer, 2, "subvolume find-new", "<path> <last_gen>\n" -+ "List the recently modified files in a filesystem." -+ }, -+ { do_defrag, -1, -+ "filesystem defragment", "[-vcf] [-s start] [-l len] [-t size] <file>|<dir> [<file>|<dir>...]\n" -+ "Defragment a file or a directory." -+ }, -+ { do_set_default_subvol, 2, -+ "subvolume set-default", "<id> <path>\n" -+ "Set the subvolume of the filesystem <path> which will be mounted\n" -+ "as default." -+ }, -+ { do_fssync, 1, -+ "filesystem sync", "<path>\n" -+ "Force a sync on the filesystem <path>." -+ }, -+ { do_resize, 2, -+ "filesystem resize", "[+/-]<newsize>[gkm]|max <filesystem>\n" -+ "Resize the file system. If 'max' is passed, the filesystem\n" -+ "will occupe all available space on the device." -+ }, -+ { do_show_filesystem, 999, -+ "filesystem show", "[<uuid>|<label>]\n" -+ "Show the info of a btrfs filesystem. If no <uuid> or <label>\n" -+ "is passed, info of all the btrfs filesystem are shown." -+ }, -+ { do_df_filesystem, 1, -+ "filesystem df", "<path>\n" -+ "Show space usage information for a mount point\n." -+ }, -+ { do_balance, 1, -+ "filesystem balance", "<path>\n" -+ "Balance the chunks across the device." -+ }, -+ { do_scan, -+ 999, "device scan", "[<device> [<device>..]\n" -+ "Scan all device for or the passed device for a btrfs\n" -+ "filesystem." -+ }, -+ { do_add_volume, -2, -+ "device add", "<dev> [<dev>..] <path>\n" -+ "Add a device to a filesystem." -+ }, -+ { do_remove_volume, -2, -+ "device delete", "<dev> [<dev>..] <path>\n" -+ "Remove a device from a filesystem." -+ }, -+ /* coming soon -+ { 2, "filesystem label", "<label> <path>\n" -+ "Set the label of a filesystem" -+ } -+ */ -+ { 0, 0 , 0 } -+}; -+ -+static char *get_prgname(char *programname) -+{ -+ char *np; -+ np = strrchr(programname,'/'); -+ if(!np) -+ np = programname; -+ else -+ np++; -+ -+ return np; -+} -+ -+static void print_help(char *programname, struct Command *cmd) -+{ -+ char *pc; -+ -+ printf("\t%s %s ", programname, cmd->verb ); -+ -+ for(pc = cmd->help; *pc; pc++){ -+ putchar(*pc); -+ if(*pc == '\n') -+ printf("\t\t"); -+ } -+ putchar('\n'); -+} -+ -+static void help(char *np) -+{ -+ struct Command *cp; -+ -+ printf("Usage:\n"); -+ for( cp = commands; cp->verb; cp++ ) -+ print_help(np, cp); -+ -+ printf("\n\t%s help|--help|-h\n\t\tShow the help.\n",np); -+ printf("\n%s\n", BTRFS_BUILD_VERSION); -+} -+ -+static int split_command(char *cmd, char ***commands) -+{ -+ int c, l; -+ char *p, *s; -+ -+ for( *commands = 0, l = c = 0, p = s = cmd ; ; p++, l++ ){ -+ if ( *p && *p != ' ' ) -+ continue; -+ -+ /* c + 2 so that we have room for the null */ -+ (*commands) = realloc( (*commands), sizeof(char *)*(c + 2)); -+ (*commands)[c] = strndup(s, l); -+ c++; -+ l = 0; -+ s = p+1; -+ if( !*p ) break; -+ } -+ -+ (*commands)[c] = 0; -+ return c; -+} -+ -+/* -+ This function checks if the passed command is ambiguous -+*/ -+static int check_ambiguity(struct Command *cmd, char **argv){ -+ int i; -+ struct Command *cp; -+ /* check for ambiguity */ -+ for( i = 0 ; i < cmd->ncmds ; i++ ){ -+ int match; -+ for( match = 0, cp = commands; cp->verb; cp++ ){ -+ int j, skip; -+ char *s1, *s2; -+ -+ if( cp->ncmds < i ) -+ continue; -+ -+ for( skip = 0, j = 0 ; j < i ; j++ ) -+ if( strcmp(cmd->cmds[j], cp->cmds[j])){ -+ skip=1; -+ break; -+ } -+ if(skip) -+ continue; -+ -+ if( !strcmp(cmd->cmds[i], cp->cmds[i])) -+ continue; -+ for(s2 = cp->cmds[i], s1 = argv[i+1]; -+ *s1 == *s2 && *s1; s1++, s2++ ) ; -+ if( !*s1 ) -+ match++; -+ } -+ if(match){ -+ int j; -+ fprintf(stderr, "ERROR: in command '"); -+ for( j = 0 ; j <= i ; j++ ) -+ fprintf(stderr, "%s%s",j?" ":"", argv[j+1]); -+ fprintf(stderr, "', '%s' is ambiguous\n",argv[j]); -+ return -2; -+ } -+ } -+ return 0; -+} -+ -+/* -+ * This function, compacts the program name and the command in the first -+ * element of the '*av' array -+ */ -+static int prepare_args(int *ac, char ***av, char *prgname, struct Command *cmd ){ -+ -+ char **ret; -+ int i; -+ char *newname; -+ -+ ret = (char **)malloc(sizeof(char*)*(*ac+1)); -+ newname = (char*)malloc(strlen(prgname)+strlen(cmd->verb)+2); -+ if( !ret || !newname ){ -+ free(ret); -+ free(newname); -+ return -1; -+ } -+ -+ ret[0] = newname; -+ for(i=0; i < *ac ; i++ ) -+ ret[i+1] = (*av)[i]; -+ -+ strcpy(newname, prgname); -+ strcat(newname, " "); -+ strcat(newname, cmd->verb); -+ -+ (*ac)++; -+ *av = ret; -+ -+ return 0; -+ -+} -+ -+ -+ -+/* -+ -+ This function perform the following jobs: -+ - show the help if '--help' or 'help' or '-h' are passed -+ - verify that a command is not ambiguous, otherwise show which -+ part of the command is ambiguous -+ - if after a (even partial) command there is '--help' show the help -+ for all the matching commands -+ - if the command doesn't' match show an error -+ - finally, if a command match, they return which command is matched and -+ the arguments -+ -+ The function return 0 in case of help is requested; <0 in case -+ of uncorrect command; >0 in case of matching commands -+ argc, argv are the arg-counter and arg-vector (input) -+ *nargs_ is the number of the arguments after the command (output) -+ **cmd_ is the invoked command (output) -+ ***args_ are the arguments after the command -+ -+*/ -+static int parse_args(int argc, char **argv, -+ CommandFunction *func_, -+ int *nargs_, char **cmd_, char ***args_ ) -+{ -+ struct Command *cp; -+ struct Command *matchcmd=0; -+ char *prgname = get_prgname(argv[0]); -+ int i=0, helprequested=0; -+ -+ if( argc < 2 || !strcmp(argv[1], "help") || -+ !strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")){ -+ help(prgname); -+ return 0; -+ } -+ -+ for( cp = commands; cp->verb; cp++ ) -+ if( !cp->ncmds) -+ cp->ncmds = split_command(cp->verb, &(cp->cmds)); -+ -+ for( cp = commands; cp->verb; cp++ ){ -+ int match; -+ -+ if( argc-1 < cp->ncmds ) -+ continue; -+ for( match = 1, i = 0 ; i < cp->ncmds ; i++ ){ -+ char *s1, *s2; -+ s1 = cp->cmds[i]; -+ s2 = argv[i+1]; -+ -+ for(s2 = cp->cmds[i], s1 = argv[i+1]; -+ *s1 == *s2 && *s1; -+ s1++, s2++ ) ; -+ if( *s1 ){ -+ match=0; -+ break; -+ } -+ } -+ -+ /* If you understand why this code works ... -+ you are a genious !! */ -+ if(argc>i+1 && !strcmp(argv[i+1],"--help")){ -+ if(!helprequested) -+ printf("Usage:\n"); -+ print_help(prgname, cp); -+ helprequested=1; -+ continue; -+ } -+ -+ if(!match) -+ continue; -+ -+ matchcmd = cp; -+ *nargs_ = argc-matchcmd->ncmds-1; -+ *cmd_ = matchcmd->verb; -+ *args_ = argv+matchcmd->ncmds+1; -+ *func_ = cp->func; -+ -+ break; -+ } -+ -+ if(helprequested){ -+ printf("\n%s\n", BTRFS_BUILD_VERSION); -+ return 0; -+ } -+ -+ if(!matchcmd){ -+ fprintf( stderr, "ERROR: unknown command '%s'\n",argv[1]); -+ help(prgname); -+ return -1; -+ } -+ -+ if(check_ambiguity(matchcmd, argv)) -+ return -2; -+ -+ /* check the number of argument */ -+ if (matchcmd->nargs < 0 && matchcmd->nargs < -*nargs_ ){ -+ fprintf(stderr, "ERROR: '%s' requires minimum %d arg(s)\n", -+ matchcmd->verb, -matchcmd->nargs); -+ return -2; -+ } -+ if(matchcmd->nargs >= 0 && matchcmd->nargs != *nargs_ && matchcmd->nargs != 999){ -+ fprintf(stderr, "ERROR: '%s' requires %d arg(s)\n", -+ matchcmd->verb, matchcmd->nargs); -+ return -2; -+ } -+ -+ if (prepare_args( nargs_, args_, prgname, matchcmd )){ -+ fprintf(stderr, "ERROR: not enough memory\n"); -+ return -20; -+ } -+ -+ -+ return 1; -+} -+int main(int ac, char **av ) -+{ -+ -+ char *cmd=0, **args=0; -+ int nargs=0, r; -+ CommandFunction func=0; -+ -+ r = parse_args(ac, av, &func, &nargs, &cmd, &args); -+ if( r <= 0 ){ -+ /* error or no command to parse*/ -+ exit(-r); -+ } -+ -+ exit(func(nargs, args)); -+ -+} -+ -diff --git a/btrfs_cmds.c b/btrfs_cmds.c -new file mode 100644 -index 0000000..8031c58 ---- /dev/null -+++ b/btrfs_cmds.c -@@ -0,0 +1,924 @@ -+/* -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public -+ * License v2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public -+ * License along with this program; if not, write to the -+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, -+ * Boston, MA 021110-1307, USA. -+ */ -+ -+ -+#include <stdio.h> -+#include <stdlib.h> -+#include <string.h> -+#include <sys/ioctl.h> -+#include <sys/types.h> -+#include <dirent.h> -+#include <sys/stat.h> -+#include <unistd.h> -+#include <fcntl.h> -+#include <libgen.h> -+#include <limits.h> -+#include <uuid/uuid.h> -+#include <ctype.h> -+ -+#undef ULONG_MAX -+ -+#include "kerncompat.h" -+#include "ctree.h" -+#include "transaction.h" -+#include "utils.h" -+#include "version.h" -+#include "ioctl.h" -+#include "volumes.h" -+ -+#include "btrfs_cmds.h" -+ -+#ifdef __CHECKER__ -+#define BLKGETSIZE64 0 -+#define BTRFS_IOC_SNAP_CREATE 0 -+#define BTRFS_VOL_NAME_MAX 255 -+struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; }; -+static inline int ioctl(int fd, int define, void *arg) { return 0; } -+#endif -+ -+/* -+ * test if path is a subvolume: -+ * this function return -+ * 0-> path exists but it is not a subvolume -+ * 1-> path exists and it is a subvolume -+ * -1 -> path is unaccessible -+ */ -+static int test_issubvolume(char *path) -+{ -+ -+ struct stat st; -+ int res; -+ -+ res = stat(path, &st); -+ if(res < 0 ) -+ return -1; -+ -+ return (st.st_ino == 256) && S_ISDIR(st.st_mode); -+ -+} -+ -+/* -+ * test if path is a directory -+ * this function return -+ * 0-> path exists but it is not a directory -+ * 1-> path exists and it is a directory -+ * -1 -> path is unaccessible -+ */ -+static int test_isdir(char *path) -+{ -+ struct stat st; -+ int res; -+ -+ res = stat(path, &st); -+ if(res < 0 ) -+ return -1; -+ -+ return S_ISDIR(st.st_mode); -+ -+} -+ -+static int open_file_or_dir(const char *fname) -+{ -+ int ret; -+ struct stat st; -+ DIR *dirstream; -+ int fd; -+ -+ ret = stat(fname, &st); -+ if (ret < 0) { -+ return -1; -+ } -+ if (S_ISDIR(st.st_mode)) { -+ dirstream = opendir(fname); -+ if (!dirstream) { -+ return -2; -+ } -+ fd = dirfd(dirstream); -+ } else { -+ fd = open(fname, O_RDWR); -+ } -+ if (fd < 0) { -+ return -3; -+ } -+ return fd; -+} -+ -+static u64 parse_size(char *s) -+{ -+ int len = strlen(s); -+ char c; -+ u64 mult = 1; -+ -+ if (!isdigit(s[len - 1])) { -+ c = tolower(s[len - 1]); -+ switch (c) { -+ case 'g': -+ mult *= 1024; -+ case 'm': -+ mult *= 1024; -+ case 'k': -+ mult *= 1024; -+ case 'b': -+ break; -+ default: -+ fprintf(stderr, "Unknown size descriptor %c\n", c); -+ exit(1); -+ } -+ s[len - 1] = '\0'; -+ } -+ return atoll(s) * mult; -+} -+ -+int do_defrag(int ac, char **av) -+{ -+ int fd; -+ int compress = 0; -+ int flush = 0; -+ u64 start = 0; -+ u64 len = (u64)-1; -+ u32 thresh = 0; -+ int i; -+ int errors = 0; -+ int ret = 0; -+ int verbose = 0; -+ int fancy_ioctl = 0; -+ struct btrfs_ioctl_defrag_range_args range; -+ -+ optind = 1; -+ while(1) { -+ int c = getopt(ac, av, "vcfs:l:t:"); -+ if (c < 0) -+ break; -+ switch(c) { -+ case 'c': -+ compress = 1; -+ fancy_ioctl = 1; -+ break; -+ case 'f': -+ flush = 1; -+ fancy_ioctl = 1; -+ break; -+ case 'v': -+ verbose = 1; -+ break; -+ case 's': -+ start = parse_size(optarg); -+ fancy_ioctl = 1; -+ break; -+ case 'l': -+ len = parse_size(optarg); -+ fancy_ioctl = 1; -+ break; -+ case 't': -+ thresh = parse_size(optarg); -+ fancy_ioctl = 1; -+ break; -+ default: -+ fprintf(stderr, "Invalid arguments for defragment\n"); -+ free(av); -+ return 1; -+ } -+ } -+ if (ac - optind == 0) { -+ fprintf(stderr, "Invalid arguments for defragment\n"); -+ free(av); -+ return 1; -+ } -+ -+ memset(&range, 0, sizeof(range)); -+ range.start = start; -+ range.len = len; -+ range.extent_thresh = thresh; -+ if (compress) -+ range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS; -+ if (flush) -+ range.flags |= BTRFS_DEFRAG_RANGE_START_IO; -+ -+ for (i = optind; i < ac; i++) { -+ if (verbose) -+ printf("%s\n", av[i]); -+ fd = open_file_or_dir(av[i]); -+ if (fd < 0) { -+ fprintf(stderr, "failed to open %s\n", av[i]); -+ perror("open:"); -+ errors++; -+ continue; -+ } -+ if (!fancy_ioctl) { -+ ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL); -+ } else { -+ ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &range); -+ if (ret && errno == ENOTTY) { -+ fprintf(stderr, "defrag range ioctl not " -+ "supported in this kernel, please try " -+ "without any options.\n"); -+ errors++; -+ break; -+ } -+ } -+ if (ret) { -+ fprintf(stderr, "ioctl failed on %s ret %d errno %d\n", -+ av[i], ret, errno); -+ errors++; -+ } -+ close(fd); -+ } -+ if (verbose) -+ printf("%s\n", BTRFS_BUILD_VERSION); -+ if (errors) { -+ fprintf(stderr, "total %d failures\n", errors); -+ exit(1); -+ } -+ -+ free(av); -+ return errors + 20; -+} -+ -+int do_find_newer(int argc, char **argv) -+{ -+ int fd; -+ int ret; -+ char *subvol; -+ u64 last_gen; -+ -+ subvol = argv[1]; -+ last_gen = atoll(argv[2]); -+ -+ ret = test_issubvolume(subvol); -+ if (ret < 0) { -+ fprintf(stderr, "ERROR: error accessing '%s'\n", subvol); -+ return 12; -+ } -+ if (!ret) { -+ fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol); -+ return 13; -+ } -+ -+ fd = open_file_or_dir(subvol); -+ if (fd < 0) { -+ fprintf(stderr, "ERROR: can't access '%s'\n", subvol); -+ return 12; -+ } -+ ret = find_updated_files(fd, 0, last_gen); -+ if (ret) -+ return 19; -+ return 0; -+} -+ -+int do_subvol_list(int argc, char **argv) -+{ -+ int fd; -+ int ret; -+ char *subvol; -+ -+ subvol = argv[1]; -+ -+ ret = test_issubvolume(subvol); -+ if (ret < 0) { -+ fprintf(stderr, "ERROR: error accessing '%s'\n", subvol); -+ return 12; -+ } -+ if (!ret) { -+ fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol); -+ return 13; -+ } -+ -+ fd = open_file_or_dir(subvol); -+ if (fd < 0) { -+ fprintf(stderr, "ERROR: can't access '%s'\n", subvol); -+ return 12; -+ } -+ ret = list_subvols(fd); -+ if (ret) -+ return 19; -+ return 0; -+} -+ -+int do_clone(int argc, char **argv) -+{ -+ char *subvol, *dst; -+ int res, fd, fddst, len; -+ char *newname; -+ char *dstdir; -+ -+ subvol = argv[1]; -+ dst = argv[2]; -+ struct btrfs_ioctl_vol_args args; -+ -+ res = test_issubvolume(subvol); -+ if(res<0){ -+ fprintf(stderr, "ERROR: error accessing '%s'\n", subvol); -+ return 12; -+ } -+ if(!res){ -+ fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol); -+ return 13; -+ } -+ -+ res = test_isdir(dst); -+ if(res == 0 ){ -+ fprintf(stderr, "ERROR: '%s' exists and it is not a directory\n", dst); -+ return 12; -+ } -+ -+ if(res>0){ -+ newname = strdup(subvol); -+ newname = basename(newname); -+ dstdir = dst; -+ }else{ -+ newname = strdup(dst); -+ newname = basename(newname); -+ dstdir = strdup(dst); -+ dstdir = dirname(dstdir); -+ } -+ -+ if( !strcmp(newname,".") || !strcmp(newname,"..") || -+ strchr(newname, '/') ){ -+ fprintf(stderr, "ERROR: incorrect snapshot name ('%s')\n", -+ newname); -+ return 14; -+ } -+ -+ len = strlen(newname); -+ if (len == 0 || len >= BTRFS_VOL_NAME_MAX) { -+ fprintf(stderr, "ERROR: snapshot name too long ('%s)\n", -+ newname); -+ return 14; -+ } -+ -+ fddst = open_file_or_dir(dstdir); -+ if (fddst < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", dstdir); -+ return 12; -+ } -+ -+ fd = open_file_or_dir(subvol); -+ if (fd < 0) { -+ close(fddst); -+ fprintf(stderr, "ERROR: can't access to '%s'\n", dstdir); -+ return 12; -+ } -+ -+ printf("Create a snapshot of '%s' in '%s/%s'\n", -+ subvol, dstdir, newname); -+ args.fd = fd; -+ strcpy(args.name, newname); -+ res = ioctl(fddst, BTRFS_IOC_SNAP_CREATE, &args); -+ -+ close(fd); -+ close(fddst); -+ -+ if(res < 0 ){ -+ fprintf( stderr, "ERROR: cannot snapshot '%s'\n",subvol); -+ return 11; -+ } -+ -+ return 0; -+ -+} -+ -+int do_delete_subvolume(int argc, char **argv) -+{ -+ int res, fd, len; -+ struct btrfs_ioctl_vol_args args; -+ char *dname, *vname, *cpath; -+ char *path = argv[1]; -+ -+ res = test_issubvolume(path); -+ if(res<0){ -+ fprintf(stderr, "ERROR: error accessing '%s'\n", path); -+ return 12; -+ } -+ if(!res){ -+ fprintf(stderr, "ERROR: '%s' is not a subvolume\n", path); -+ return 13; -+ } -+ -+ cpath = realpath(path, 0); -+ dname = strdup(cpath); -+ dname = dirname(dname); -+ vname = strdup(cpath); -+ vname = basename(vname); -+ free(cpath); -+ -+ if( !strcmp(vname,".") || !strcmp(vname,"..") || -+ strchr(vname, '/') ){ -+ fprintf(stderr, "ERROR: incorrect subvolume name ('%s')\n", -+ vname); -+ return 14; -+ } -+ -+ len = strlen(vname); -+ if (len == 0 || len >= BTRFS_VOL_NAME_MAX) { -+ fprintf(stderr, "ERROR: snapshot name too long ('%s)\n", -+ vname); -+ return 14; -+ } -+ -+ fd = open_file_or_dir(dname); -+ if (fd < 0) { -+ close(fd); -+ fprintf(stderr, "ERROR: can't access to '%s'\n", dname); -+ return 12; -+ } -+ -+ printf("Delete subvolume '%s/%s'\n", dname, vname); -+ strcpy(args.name, vname); -+ res = ioctl(fd, BTRFS_IOC_SNAP_DESTROY, &args); -+ -+ close(fd); -+ -+ if(res < 0 ){ -+ fprintf( stderr, "ERROR: cannot delete '%s/%s'\n",dname, vname); -+ return 11; -+ } -+ -+ return 0; -+ -+} -+ -+int do_create_subvol(int argc, char **argv) -+{ -+ int res, fddst, len; -+ char *newname; -+ char *dstdir; -+ struct btrfs_ioctl_vol_args args; -+ char *dst = argv[1]; -+ -+ res = test_isdir(dst); -+ if(res >= 0 ){ -+ fprintf(stderr, "ERROR: '%s' exists\n", dst); -+ return 12; -+ } -+ -+ newname = strdup(dst); -+ newname = basename(newname); -+ dstdir = strdup(dst); -+ dstdir = dirname(dstdir); -+ -+ if( !strcmp(newname,".") || !strcmp(newname,"..") || -+ strchr(newname, '/') ){ -+ fprintf(stderr, "ERROR: uncorrect subvolume name ('%s')\n", -+ newname); -+ return 14; -+ } -+ -+ len = strlen(newname); -+ if (len == 0 || len >= BTRFS_VOL_NAME_MAX) { -+ fprintf(stderr, "ERROR: subvolume name too long ('%s)\n", -+ newname); -+ return 14; -+ } -+ -+ fddst = open_file_or_dir(dstdir); -+ if (fddst < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", dstdir); -+ return 12; -+ } -+ -+ printf("Create subvolume '%s/%s'\n", dstdir, newname); -+ strcpy(args.name, newname); -+ res = ioctl(fddst, BTRFS_IOC_SUBVOL_CREATE, &args); -+ -+ close(fddst); -+ -+ if(res < 0 ){ -+ fprintf( stderr, "ERROR: cannot create subvolume\n"); -+ return 11; -+ } -+ -+ return 0; -+ -+} -+ -+int do_fssync(int argc, char **argv) -+{ -+ int fd, res; -+ char *path = argv[1]; -+ -+ fd = open_file_or_dir(path); -+ if (fd < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", path); -+ return 12; -+ } -+ -+ printf("FSSync '%s'\n", path); -+ res = ioctl(fd, BTRFS_IOC_SYNC); -+ close(fd); -+ if( res < 0 ){ -+ fprintf(stderr, "ERROR: unable to fs-syncing '%s'\n", path); -+ return 16; -+ } -+ -+ return 0; -+} -+ -+int do_scan(int argc, char **argv) -+{ -+ int i, fd; -+ if(argc<=1){ -+ int ret; -+ -+ printf("Scanning for Btrfs filesystems\n"); -+ ret = btrfs_scan_one_dir("/dev", 1); -+ if (ret){ -+ fprintf(stderr, "ERROR: error %d while scanning\n", ret); -+ return 18; -+ } -+ return 0; -+ } -+ -+ fd = open("/dev/btrfs-control", O_RDWR); -+ if (fd < 0) { -+ perror("failed to open /dev/btrfs-control"); -+ return 10; -+ } -+ -+ for( i = 1 ; i < argc ; i++ ){ -+ struct btrfs_ioctl_vol_args args; -+ int ret; -+ -+ printf("Scanning for Btrfs filesystems in '%s'\n", argv[i]); -+ -+ strcpy(args.name, argv[i]); -+ /* -+ * FIXME: which are the error code returned by this ioctl ? -+ * it seems that is impossible to understand if there no is -+ * a btrfs filesystem from an I/O error !!! -+ */ -+ ret = ioctl(fd, BTRFS_IOC_SCAN_DEV, &args); -+ -+ if( ret < 0 ){ -+ close(fd); -+ fprintf(stderr, "ERROR: unable to scan the device '%s'\n", argv[i]); -+ return 11; -+ } -+ } -+ -+ close(fd); -+ return 0; -+ -+} -+ -+int do_resize(int argc, char **argv) -+{ -+ -+ struct btrfs_ioctl_vol_args args; -+ int fd, res, len; -+ char *amount=argv[1], *path=argv[2]; -+ -+ fd = open_file_or_dir(path); -+ if (fd < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", path); -+ return 12; -+ } -+ len = strlen(amount); -+ if (len == 0 || len >= BTRFS_VOL_NAME_MAX) { -+ fprintf(stderr, "ERROR: size value too long ('%s)\n", -+ amount); -+ return 14; -+ } -+ -+ printf("Resize '%s' of '%s'\n", path, amount); -+ strcpy(args.name, amount); -+ res = ioctl(fd, BTRFS_IOC_RESIZE, &args); -+ close(fd); -+ if( res < 0 ){ -+ fprintf(stderr, "ERROR: unable to resize '%s'\n", path); -+ return 30; -+ } -+ return 0; -+} -+ -+static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search) -+{ -+ struct list_head *cur; -+ struct btrfs_device *device; -+ -+ list_for_each(cur, &fs_devices->devices) { -+ device = list_entry(cur, struct btrfs_device, dev_list); -+ if ((device->label && strcmp(device->label, search) == 0) || -+ strcmp(device->name, search) == 0) -+ return 1; -+ } -+ return 0; -+} -+ -+static void print_one_uuid(struct btrfs_fs_devices *fs_devices) -+{ -+ char uuidbuf[37]; -+ struct list_head *cur; -+ struct btrfs_device *device; -+ char *super_bytes_used; -+ u64 devs_found = 0; -+ u64 total; -+ -+ uuid_unparse(fs_devices->fsid, uuidbuf); -+ device = list_entry(fs_devices->devices.next, struct btrfs_device, -+ dev_list); -+ if (device->label && device->label[0]) -+ printf("Label: '%s' ", device->label); -+ else -+ printf("Label: none "); -+ -+ super_bytes_used = pretty_sizes(device->super_bytes_used); -+ -+ total = device->total_devs; -+ printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf, -+ (unsigned long long)total, super_bytes_used); -+ -+ free(super_bytes_used); -+ -+ list_for_each(cur, &fs_devices->devices) { -+ char *total_bytes; -+ char *bytes_used; -+ device = list_entry(cur, struct btrfs_device, dev_list); -+ total_bytes = pretty_sizes(device->total_bytes); -+ bytes_used = pretty_sizes(device->bytes_used); -+ printf("\tdevid %4llu size %s used %s path %s\n", -+ (unsigned long long)device->devid, -+ total_bytes, bytes_used, device->name); -+ free(total_bytes); -+ free(bytes_used); -+ devs_found++; -+ } -+ if (devs_found < total) { -+ printf("\t*** Some devices missing\n"); -+ } -+ printf("\n"); -+} -+ -+int do_show_filesystem(int argc, char **argv) -+{ -+ struct list_head *all_uuids; -+ struct btrfs_fs_devices *fs_devices; -+ struct list_head *cur_uuid; -+ char *search = argv[1]; -+ int ret; -+ -+ ret = btrfs_scan_one_dir("/dev", 0); -+ if (ret){ -+ fprintf(stderr, "ERROR: error %d while scanning\n", ret); -+ return 18; -+ } -+ -+ all_uuids = btrfs_scanned_uuids(); -+ list_for_each(cur_uuid, all_uuids) { -+ fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices, -+ list); -+ if (search && uuid_search(fs_devices, search) == 0) -+ continue; -+ print_one_uuid(fs_devices); -+ } -+ printf("%s\n", BTRFS_BUILD_VERSION); -+ return 0; -+} -+ -+int do_add_volume(int nargs, char **args) -+{ -+ -+ char *mntpnt = args[nargs-1]; -+ int i, fdmnt, ret=0; -+ -+ -+ fdmnt = open_file_or_dir(mntpnt); -+ if (fdmnt < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt); -+ return 12; -+ } -+ -+ for(i=1 ; i < (nargs-1) ; i++ ){ -+ struct btrfs_ioctl_vol_args ioctl_args; -+ int devfd, res; -+ u64 dev_block_count = 0; -+ struct stat st; -+ -+ devfd = open(args[i], O_RDWR); -+ if (!devfd) { -+ fprintf(stderr, "ERROR: Unable to open device '%s'\n", args[i]); -+ close(devfd); -+ ret++; -+ continue; -+ } -+ ret = fstat(devfd, &st); -+ if (ret) { -+ fprintf(stderr, "ERROR: Unable to stat '%s'\n", args[i]); -+ close(devfd); -+ ret++; -+ continue; -+ } -+ if (!S_ISBLK(st.st_mode)) { -+ fprintf(stderr, "ERROR: '%s' is not a block device\n", args[i]); -+ close(devfd); -+ ret++; -+ continue; -+ } -+ -+ res = btrfs_prepare_device(devfd, args[i], 1, &dev_block_count); -+ if (res) { -+ fprintf(stderr, "ERROR: Unable to init '%s'\n", args[i]); -+ close(devfd); -+ ret++; -+ continue; -+ } -+ close(devfd); -+ -+ strcpy(ioctl_args.name, args[i]); -+ res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args); -+ if(res<0){ -+ fprintf(stderr, "ERROR: error adding the device '%s'\n", args[i]); -+ ret++; -+ } -+ -+ } -+ -+ close(fdmnt); -+ if( ret) -+ return ret+20; -+ else -+ return 0; -+ -+} -+ -+int do_balance(int argc, char **argv) -+{ -+ -+ int fdmnt, ret=0; -+ struct btrfs_ioctl_vol_args args; -+ char *path = argv[1]; -+ -+ fdmnt = open_file_or_dir(path); -+ if (fdmnt < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", path); -+ return 12; -+ } -+ -+ memset(&args, 0, sizeof(args)); -+ ret = ioctl(fdmnt, BTRFS_IOC_BALANCE, &args); -+ close(fdmnt); -+ if(ret<0){ -+ fprintf(stderr, "ERROR: balancing '%s'\n", path); -+ -+ return 19; -+ } -+ return 0; -+} -+int do_remove_volume(int nargs, char **args) -+{ -+ -+ char *mntpnt = args[nargs-1]; -+ int i, fdmnt, ret=0; -+ -+ fdmnt = open_file_or_dir(mntpnt); -+ if (fdmnt < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt); -+ return 12; -+ } -+ -+ for(i=1 ; i < (nargs-1) ; i++ ){ -+ struct btrfs_ioctl_vol_args arg; -+ int res; -+ -+ strcpy(arg.name, args[i]); -+ res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg); -+ if(res<0){ -+ fprintf(stderr, "ERROR: error removing the device '%s'\n", args[i]); -+ ret++; -+ } -+ } -+ -+ close(fdmnt); -+ if( ret) -+ return ret+20; -+ else -+ return 0; -+} -+ -+int do_set_default_subvol(int nargs, char **argv) -+{ -+ int ret=0, fd; -+ u64 objectid; -+ char *path = argv[2]; -+ char *subvolid = argv[1]; -+ -+ fd = open_file_or_dir(path); -+ if (fd < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", path); -+ return 12; -+ } -+ -+ objectid = (unsigned long long)strtoll(subvolid, NULL, 0); -+ if (errno == ERANGE) { -+ fprintf(stderr, "ERROR: invalid tree id (%s)\n",subvolid); -+ return 30; -+ } -+ ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid); -+ close(fd); -+ if( ret < 0 ){ -+ fprintf(stderr, "ERROR: unable to set a new default subvolume\n"); -+ return 30; -+ } -+ return 0; -+} -+ -+int do_df_filesystem(int nargs, char **argv) -+{ -+ struct btrfs_ioctl_space_args *sargs; -+ u64 count = 0, i; -+ int ret; -+ int fd; -+ char *path = argv[1]; -+ -+ fd = open_file_or_dir(path); -+ if (fd < 0) { -+ fprintf(stderr, "ERROR: can't access to '%s'\n", path); -+ return 12; -+ } -+ -+ sargs = malloc(sizeof(struct btrfs_ioctl_space_args)); -+ if (!sargs) -+ return -ENOMEM; -+ -+ sargs->space_slots = 0; -+ sargs->total_spaces = 0; -+ -+ ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs); -+ if (ret) { -+ free(sargs); -+ return ret; -+ } -+ if (!sargs->total_spaces) -+ return 0; -+ -+ count = sargs->total_spaces; -+ -+ sargs = realloc(sargs, sizeof(struct btrfs_ioctl_space_args) + -+ (count * sizeof(struct btrfs_ioctl_space_info))); -+ if (!sargs) -+ return -ENOMEM; -+ -+ sargs->space_slots = count; -+ sargs->total_spaces = 0; -+ -+ ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs); -+ if (ret) { -+ free(sargs); -+ return ret; -+ } -+ -+ for (i = 0; i < sargs->total_spaces; i++) { -+ char description[80]; -+ char *total_bytes; -+ char *used_bytes; -+ int written = 0; -+ u64 flags = sargs->spaces[i].flags; -+ -+ memset(description, 0, 80); -+ -+ if (flags & BTRFS_BLOCK_GROUP_DATA) { -+ snprintf(description, 5, "%s", "Data"); -+ written += 4; -+ } else if (flags & BTRFS_BLOCK_GROUP_SYSTEM) { -+ snprintf(description, 7, "%s", "System"); -+ written += 6; -+ } else if (flags & BTRFS_BLOCK_GROUP_METADATA) { -+ snprintf(description, 9, "%s", "Metadata"); -+ written += 8; -+ } -+ -+ if (flags & BTRFS_BLOCK_GROUP_RAID0) { -+ snprintf(description+written, 8, "%s", ", RAID0"); -+ written += 7; -+ } else if (flags & BTRFS_BLOCK_GROUP_RAID1) { -+ snprintf(description+written, 8, "%s", ", RAID1"); -+ written += 7; -+ } else if (flags & BTRFS_BLOCK_GROUP_DUP) { -+ snprintf(description+written, 6, "%s", ", DUP"); -+ written += 5; -+ } else if (flags & BTRFS_BLOCK_GROUP_RAID10) { -+ snprintf(description+written, 9, "%s", ", RAID10"); -+ written += 8; -+ } -+ -+ total_bytes = pretty_sizes(sargs->spaces[i].total_bytes); -+ used_bytes = pretty_sizes(sargs->spaces[i].used_bytes); -+ printf("%s: total=%s, used=%s\n", description, total_bytes, -+ used_bytes); -+ } -+ free(sargs); -+ -+ return 0; -+} -diff --git a/btrfs_cmds.h b/btrfs_cmds.h -new file mode 100644 -index 0000000..7bde191 ---- /dev/null -+++ b/btrfs_cmds.h -@@ -0,0 +1,34 @@ -+/* -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public -+ * License v2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public -+ * License along with this program; if not, write to the -+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, -+ * Boston, MA 021110-1307, USA. -+ */ -+ -+/* btrfs_cmds.c*/ -+int do_clone(int nargs, char **argv); -+int do_delete_subvolume(int nargs, char **argv); -+int do_create_subvol(int nargs, char **argv); -+int do_fssync(int nargs, char **argv); -+int do_defrag(int argc, char **argv); -+int do_show_filesystem(int nargs, char **argv); -+int do_add_volume(int nargs, char **args); -+int do_balance(int nargs, char **argv); -+int do_remove_volume(int nargs, char **args); -+int do_scan(int nargs, char **argv); -+int do_resize(int nargs, char **argv); -+int do_subvol_list(int nargs, char **argv); -+int do_set_default_subvol(int nargs, char **argv); -+int list_subvols(int fd); -+int do_df_filesystem(int nargs, char **argv); -+int find_updated_files(int fd, u64 root_id, u64 oldest_gen); -+int do_find_newer(int argc, char **argv); -diff --git a/btrfsck.c b/btrfsck.c -index 40c90f8..63e44d1 100644 ---- a/btrfsck.c -+++ b/btrfsck.c -@@ -20,7 +20,9 @@ - #define _GNU_SOURCE 1 - #include <stdio.h> - #include <stdlib.h> -+#include <unistd.h> - #include <fcntl.h> -+#include <sys/stat.h> - #include "kerncompat.h" - #include "ctree.h" - #include "disk-io.h" -@@ -28,6 +30,7 @@ - #include "transaction.h" - #include "list.h" - #include "version.h" -+#include "utils.h" - - static u64 bytes_used = 0; - static u64 total_csum_bytes = 0; -@@ -36,7 +39,7 @@ static u64 total_fs_tree_bytes = 0; - static u64 btree_space_waste = 0; - static u64 data_bytes_allocated = 0; - static u64 data_bytes_referenced = 0; --int found_old_backref = 0; -+static int found_old_backref = 0; - - struct extent_backref { - struct list_head list; -@@ -100,7 +103,11 @@ struct inode_backref { - #define REF_ERR_DUP_INODE_REF (1 << 5) - #define REF_ERR_INDEX_UNMATCH (1 << 6) - #define REF_ERR_FILETYPE_UNMATCH (1 << 7) --#define REF_ERR_NAME_TOO_LONG (1 << 8) -+#define REF_ERR_NAME_TOO_LONG (1 << 8) // 100 -+#define REF_ERR_NO_ROOT_REF (1 << 9) -+#define REF_ERR_NO_ROOT_BACKREF (1 << 10) -+#define REF_ERR_DUP_ROOT_REF (1 << 11) -+#define REF_ERR_DUP_ROOT_BACKREF (1 << 12) - - struct inode_record { - struct list_head backrefs; -@@ -144,6 +151,29 @@ struct inode_record { - #define I_ERR_SOME_CSUM_MISSING (1 << 12) - #define I_ERR_LINK_COUNT_WRONG (1 << 13) - -+struct root_backref { -+ struct list_head list; -+ unsigned int found_dir_item:1; -+ unsigned int found_dir_index:1; -+ unsigned int found_back_ref:1; -+ unsigned int found_forward_ref:1; -+ unsigned int reachable:1; -+ int errors; -+ u64 ref_root; -+ u64 dir; -+ u64 index; -+ u16 namelen; -+ char name[0]; -+}; -+ -+struct root_record { -+ struct list_head backrefs; -+ struct cache_extent cache; -+ unsigned int found_root_item:1; -+ u64 objectid; -+ u32 found_ref; -+}; -+ - struct ptr_node { - struct cache_extent cache; - void *data; -@@ -151,6 +181,7 @@ struct ptr_node { - - struct shared_node { - struct cache_extent cache; -+ struct cache_tree root_cache; - struct cache_tree inode_cache; - struct inode_record *current; - u32 refs; -@@ -258,6 +289,14 @@ static void free_inode_rec(struct inode_record *rec) - free(rec); - } - -+static int can_free_inode_rec(struct inode_record *rec) -+{ -+ if (!rec->errors && rec->checked && rec->found_inode_item && -+ rec->nlink == rec->found_link && list_empty(&rec->backrefs)) -+ return 1; -+ return 0; -+} -+ - static void maybe_free_inode_rec(struct cache_tree *inode_cache, - struct inode_record *rec) - { -@@ -309,8 +348,7 @@ static void maybe_free_inode_rec(struct cache_tree *inode_cache, - } - - BUG_ON(rec->refs != 1); -- if (!rec->errors && rec->nlink == rec->found_link && -- list_empty(&rec->backrefs)) { -+ if (can_free_inode_rec(rec)) { - cache = find_cache_extent(inode_cache, rec->ino, 1); - node = container_of(cache, struct ptr_node, cache); - BUG_ON(node->data != rec); -@@ -338,14 +376,12 @@ static int check_orphan_item(struct btrfs_root *root, u64 ino) - return ret; - } - --static int process_inode_item(struct btrfs_root *root, -- struct extent_buffer *eb, -+static int process_inode_item(struct extent_buffer *eb, - int slot, struct btrfs_key *key, - struct shared_node *active_node) - { - struct inode_record *rec; - struct btrfs_inode_item *item; -- int ret; - - rec = active_node->current; - BUG_ON(rec->ino != key->objectid || rec->refs > 1); -@@ -361,11 +397,8 @@ static int process_inode_item(struct btrfs_root *root, - if (btrfs_inode_flags(eb, item) & BTRFS_INODE_NODATASUM) - rec->nodatasum = 1; - rec->found_inode_item = 1; -- if (rec->nlink == 0) { -- ret = check_orphan_item(root, rec->ino); -- if (ret == -ENOENT) -- rec->errors |= I_ERR_NO_ORPHAN_ITEM; -- } -+ if (rec->nlink == 0) -+ rec->errors |= I_ERR_NO_ORPHAN_ITEM; - maybe_free_inode_rec(&active_node->inode_cache, rec); - return 0; - } -@@ -391,7 +424,6 @@ static struct inode_backref *get_inode_backref(struct inode_record *rec, - memcpy(backref->name, name, namelen); - backref->name[namelen] = '\0'; - list_add_tail(&backref->list, &rec->backrefs); -- rec->found_link++; - return backref; - } - -@@ -419,6 +451,7 @@ static int add_inode_backref(struct cache_tree *inode_cache, - backref->filetype = filetype; - backref->found_dir_index = 1; - } else if (itemtype == BTRFS_DIR_ITEM_KEY) { -+ rec->found_link++; - if (backref->found_dir_item) - backref->errors |= REF_ERR_DUP_DIR_ITEM; - if (backref->found_dir_index && backref->filetype != filetype) -@@ -443,10 +476,10 @@ static int add_inode_backref(struct cache_tree *inode_cache, - } - - static int merge_inode_recs(struct inode_record *src, struct inode_record *dst, -- struct shared_node *dst_node) -+ struct cache_tree *dst_cache) - { - struct inode_backref *backref; -- struct cache_tree *dst_cache = &dst_node->inode_cache; -+ u32 dir_count = 0; - - dst->merging = 1; - list_for_each_entry(backref, &src->backrefs, list) { -@@ -457,6 +490,7 @@ static int merge_inode_recs(struct inode_record *src, struct inode_record *dst, - BTRFS_DIR_INDEX_KEY, backref->errors); - } - if (backref->found_dir_item) { -+ dir_count++; - add_inode_backref(dst_cache, dst->ino, - backref->dir, 0, backref->name, - backref->namelen, backref->filetype, -@@ -481,6 +515,8 @@ static int merge_inode_recs(struct inode_record *src, struct inode_record *dst, - if (dst->first_extent_gap > src->first_extent_gap) - dst->first_extent_gap = src->first_extent_gap; - -+ BUG_ON(src->found_link < dir_count); -+ dst->found_link += src->found_link - dir_count; - dst->found_size += src->found_size; - if (src->extent_start != (u64)-1) { - if (dst->extent_start == (u64)-1) { -@@ -510,14 +546,8 @@ static int merge_inode_recs(struct inode_record *src, struct inode_record *dst, - dst->errors |= I_ERR_DUP_INODE_ITEM; - } - } -- -- if (src->checked) { -- dst->checked = 1; -- if (dst_node->current == dst) -- dst_node->current = NULL; -- } - dst->merging = 0; -- maybe_free_inode_rec(dst_cache, dst); -+ - return 0; - } - -@@ -537,8 +567,9 @@ static int splice_shared_node(struct shared_node *src_node, - if (src_node->current) - current_ino = src_node->current->ino; - -- src = &src_node->inode_cache; -- dst = &dst_node->inode_cache; -+ src = &src_node->root_cache; -+ dst = &dst_node->root_cache; -+again: - cache = find_first_cache_extent(src, 0); - while (cache) { - node = container_of(cache, struct ptr_node, cache); -@@ -558,13 +589,26 @@ static int splice_shared_node(struct shared_node *src_node, - ret = insert_existing_cache_extent(dst, &ins->cache); - if (ret == -EEXIST) { - conflict = get_inode_rec(dst, rec->ino, 1); -- merge_inode_recs(rec, conflict, dst_node); -+ merge_inode_recs(rec, conflict, dst); -+ if (rec->checked) { -+ conflict->checked = 1; -+ if (dst_node->current == conflict) -+ dst_node->current = NULL; -+ } -+ maybe_free_inode_rec(dst, conflict); - free_inode_rec(rec); - free(ins); - } else { - BUG_ON(ret); - } - } -+ -+ if (src == &src_node->root_cache) { -+ src = &src_node->inode_cache; -+ dst = &dst_node->inode_cache; -+ goto again; -+ } -+ - if (current_ino > 0 && (!dst_node->current || - current_ino > dst_node->current->ino)) { - if (dst_node->current) { -@@ -616,6 +660,7 @@ static int add_shared_node(struct cache_tree *shared, u64 bytenr, u32 refs) - node = calloc(1, sizeof(*node)); - node->cache.start = bytenr; - node->cache.size = 1; -+ cache_tree_init(&node->root_cache); - cache_tree_init(&node->inode_cache); - node->refs = refs; - -@@ -646,6 +691,7 @@ static int enter_shared_node(struct btrfs_root *root, u64 bytenr, u32 refs, - if (wc->root_level == wc->active_node && - btrfs_root_refs(&root->root_item) == 0) { - if (--node->refs == 0) { -+ free_inode_recs(&node->root_cache); - free_inode_recs(&node->inode_cache); - remove_cache_extent(&wc->shared, &node->cache); - free(node); -@@ -708,10 +754,12 @@ static int process_dir_item(struct extent_buffer *eb, - int filetype; - struct btrfs_dir_item *di; - struct inode_record *rec; -+ struct cache_tree *root_cache; - struct cache_tree *inode_cache; - struct btrfs_key location; - char namebuf[BTRFS_NAME_LEN]; - -+ root_cache = &active_node->root_cache; - inode_cache = &active_node->inode_cache; - rec = active_node->current; - rec->found_dir_item = 1; -@@ -740,7 +788,9 @@ static int process_dir_item(struct extent_buffer *eb, - key->objectid, key->offset, namebuf, - len, filetype, key->type, error); - } else if (location.type == BTRFS_ROOT_ITEM_KEY) { -- /* fixme: check root back & forward references */ -+ add_inode_backref(root_cache, location.objectid, -+ key->objectid, key->offset, namebuf, -+ len, filetype, key->type, error); - } else { - fprintf(stderr, "warning line %d\n", __LINE__); - } -@@ -977,8 +1027,7 @@ static int process_one_leaf(struct btrfs_root *root, struct extent_buffer *eb, - ret = process_inode_ref(eb, i, &key, active_node); - break; - case BTRFS_INODE_ITEM_KEY: -- ret = process_inode_item(root, eb, i, &key, -- active_node); -+ ret = process_inode_item(eb, i, &key, active_node); - break; - case BTRFS_EXTENT_DATA_KEY: - ret = process_file_extent(root, eb, i, &key, -@@ -1120,7 +1169,7 @@ static int check_root_dir(struct inode_record *rec) - - if (!rec->found_inode_item || rec->errors) - goto out; -- if (rec->nlink != 1 || rec->found_link != 1) -+ if (rec->nlink != 1 || rec->found_link != 0) - goto out; - if (list_empty(&rec->backrefs)) - goto out; -@@ -1176,13 +1225,23 @@ static int check_inode_recs(struct btrfs_root *root, - node = container_of(cache, struct ptr_node, cache); - rec = node->data; - remove_cache_extent(inode_cache, &node->cache); -+ free(node); - if (rec->ino == root_dirid || - rec->ino == BTRFS_ORPHAN_OBJECTID) { -- free(node); - free_inode_rec(rec); - continue; - } - -+ if (rec->errors & I_ERR_NO_ORPHAN_ITEM) { -+ ret = check_orphan_item(root, rec->ino); -+ if (ret == 0) -+ rec->errors &= ~I_ERR_NO_ORPHAN_ITEM; -+ if (can_free_inode_rec(rec)) { -+ free_inode_rec(rec); -+ continue; -+ } -+ } -+ - error++; - if (!rec->found_inode_item) - rec->errors |= I_ERR_NO_INODE_ITEM; -@@ -1205,13 +1264,314 @@ static int check_inode_recs(struct btrfs_root *root, - backref->namelen, backref->name, - backref->filetype, backref->errors); - } -- free(node); - free_inode_rec(rec); - } - return (error > 0) ? -1 : 0; - } - -+static struct root_record *get_root_rec(struct cache_tree *root_cache, -+ u64 objectid) -+{ -+ struct cache_extent *cache; -+ struct root_record *rec = NULL; -+ int ret; -+ -+ cache = find_cache_extent(root_cache, objectid, 1); -+ if (cache) { -+ rec = container_of(cache, struct root_record, cache); -+ } else { -+ rec = calloc(1, sizeof(*rec)); -+ rec->objectid = objectid; -+ INIT_LIST_HEAD(&rec->backrefs); -+ rec->cache.start = objectid; -+ rec->cache.size = 1; -+ -+ ret = insert_existing_cache_extent(root_cache, &rec->cache); -+ BUG_ON(ret); -+ } -+ return rec; -+} -+ -+static struct root_backref *get_root_backref(struct root_record *rec, -+ u64 ref_root, u64 dir, u64 index, -+ const char *name, int namelen) -+{ -+ struct root_backref *backref; -+ -+ list_for_each_entry(backref, &rec->backrefs, list) { -+ if (backref->ref_root != ref_root || backref->dir != dir || -+ backref->namelen != namelen) -+ continue; -+ if (memcmp(name, backref->name, namelen)) -+ continue; -+ return backref; -+ } -+ -+ backref = malloc(sizeof(*backref) + namelen + 1); -+ memset(backref, 0, sizeof(*backref)); -+ backref->ref_root = ref_root; -+ backref->dir = dir; -+ backref->index = index; -+ backref->namelen = namelen; -+ memcpy(backref->name, name, namelen); -+ backref->name[namelen] = '\0'; -+ list_add_tail(&backref->list, &rec->backrefs); -+ return backref; -+} -+ -+static void free_root_recs(struct cache_tree *root_cache) -+{ -+ struct cache_extent *cache; -+ struct root_record *rec; -+ struct root_backref *backref; -+ -+ while (1) { -+ cache = find_first_cache_extent(root_cache, 0); -+ if (!cache) -+ break; -+ rec = container_of(cache, struct root_record, cache); -+ remove_cache_extent(root_cache, &rec->cache); -+ -+ while (!list_empty(&rec->backrefs)) { -+ backref = list_entry(rec->backrefs.next, -+ struct root_backref, list); -+ list_del(&backref->list); -+ free(backref); -+ } -+ kfree(rec); -+ } -+} -+ -+static int add_root_backref(struct cache_tree *root_cache, -+ u64 root_id, u64 ref_root, u64 dir, u64 index, -+ const char *name, int namelen, -+ int item_type, int errors) -+{ -+ struct root_record *rec; -+ struct root_backref *backref; -+ -+ rec = get_root_rec(root_cache, root_id); -+ backref = get_root_backref(rec, ref_root, dir, index, name, namelen); -+ -+ backref->errors |= errors; -+ -+ if (item_type != BTRFS_DIR_ITEM_KEY) { -+ if (backref->found_dir_index || backref->found_back_ref || -+ backref->found_forward_ref) { -+ if (backref->index != index) -+ backref->errors |= REF_ERR_INDEX_UNMATCH; -+ } else { -+ backref->index = index; -+ } -+ } -+ -+ if (item_type == BTRFS_DIR_ITEM_KEY) { -+ backref->found_dir_item = 1; -+ backref->reachable = 1; -+ rec->found_ref++; -+ } else if (item_type == BTRFS_DIR_INDEX_KEY) { -+ backref->found_dir_index = 1; -+ } else if (item_type == BTRFS_ROOT_REF_KEY) { -+ if (backref->found_forward_ref) -+ backref->errors |= REF_ERR_DUP_ROOT_REF; -+ backref->found_forward_ref = 1; -+ } else if (item_type == BTRFS_ROOT_BACKREF_KEY) { -+ if (backref->found_back_ref) -+ backref->errors |= REF_ERR_DUP_ROOT_BACKREF; -+ backref->found_back_ref = 1; -+ } else { -+ BUG_ON(1); -+ } -+ -+ return 0; -+} -+ -+static int merge_root_recs(struct btrfs_root *root, -+ struct cache_tree *src_cache, -+ struct cache_tree *dst_cache) -+{ -+ struct cache_extent *cache; -+ struct ptr_node *node; -+ struct inode_record *rec; -+ struct inode_backref *backref; -+ -+ if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) { -+ free_inode_recs(src_cache); -+ return 0; -+ } -+ -+ while (1) { -+ cache = find_first_cache_extent(src_cache, 0); -+ if (!cache) -+ break; -+ node = container_of(cache, struct ptr_node, cache); -+ rec = node->data; -+ remove_cache_extent(src_cache, &node->cache); -+ free(node); -+ -+ list_for_each_entry(backref, &rec->backrefs, list) { -+ BUG_ON(backref->found_inode_ref); -+ if (backref->found_dir_item) -+ add_root_backref(dst_cache, rec->ino, -+ root->root_key.objectid, backref->dir, -+ backref->index, backref->name, -+ backref->namelen, BTRFS_DIR_ITEM_KEY, -+ backref->errors); -+ if (backref->found_dir_index) -+ add_root_backref(dst_cache, rec->ino, -+ root->root_key.objectid, backref->dir, -+ backref->index, backref->name, -+ backref->namelen, BTRFS_DIR_INDEX_KEY, -+ backref->errors); -+ } -+ free_inode_rec(rec); -+ } -+ return 0; -+} -+ -+static int check_root_refs(struct btrfs_root *root, -+ struct cache_tree *root_cache) -+{ -+ struct root_record *rec; -+ struct root_record *ref_root; -+ struct root_backref *backref; -+ struct cache_extent *cache; -+ int loop = 1; -+ int ret; -+ int error; -+ int errors = 0; -+ -+ rec = get_root_rec(root_cache, BTRFS_FS_TREE_OBJECTID); -+ rec->found_ref = 1; -+ -+ /* fixme: this can not detect circular references */ -+ while (loop) { -+ loop = 0; -+ cache = find_first_cache_extent(root_cache, 0); -+ while (1) { -+ if (!cache) -+ break; -+ rec = container_of(cache, struct root_record, cache); -+ cache = next_cache_extent(cache); -+ -+ if (rec->found_ref == 0) -+ continue; -+ -+ list_for_each_entry(backref, &rec->backrefs, list) { -+ if (!backref->reachable) -+ continue; -+ -+ ref_root = get_root_rec(root_cache, -+ backref->ref_root); -+ if (ref_root->found_ref > 0) -+ continue; -+ -+ backref->reachable = 0; -+ rec->found_ref--; -+ if (rec->found_ref == 0) -+ loop = 1; -+ } -+ } -+ } -+ -+ cache = find_first_cache_extent(root_cache, 0); -+ while (1) { -+ if (!cache) -+ break; -+ rec = container_of(cache, struct root_record, cache); -+ cache = next_cache_extent(cache); -+ -+ if (rec->found_ref == 0 && -+ rec->objectid >= BTRFS_FIRST_FREE_OBJECTID && -+ rec->objectid <= BTRFS_LAST_FREE_OBJECTID) { -+ ret = check_orphan_item(root->fs_info->tree_root, -+ rec->objectid); -+ if (ret == 0) -+ continue; -+ errors++; -+ fprintf(stderr, "fs tree %llu not referenced\n", -+ (unsigned long long)rec->objectid); -+ } -+ -+ error = 0; -+ if (rec->found_ref > 0 && !rec->found_root_item) -+ error = 1; -+ list_for_each_entry(backref, &rec->backrefs, list) { -+ if (!backref->found_dir_item) -+ backref->errors |= REF_ERR_NO_DIR_ITEM; -+ if (!backref->found_dir_index) -+ backref->errors |= REF_ERR_NO_DIR_INDEX; -+ if (!backref->found_back_ref) -+ backref->errors |= REF_ERR_NO_ROOT_BACKREF; -+ if (!backref->found_forward_ref) -+ backref->errors |= REF_ERR_NO_ROOT_REF; -+ if (backref->reachable && backref->errors) -+ error = 1; -+ } -+ if (!error) -+ continue; -+ -+ errors++; -+ fprintf(stderr, "fs tree %llu refs %u %s\n", -+ (unsigned long long)rec->objectid, rec->found_ref, -+ rec->found_root_item ? "" : "not found"); -+ -+ list_for_each_entry(backref, &rec->backrefs, list) { -+ if (!backref->reachable) -+ continue; -+ if (!backref->errors && rec->found_root_item) -+ continue; -+ fprintf(stderr, "\tunresolved ref root %llu dir %llu" -+ " index %llu namelen %u name %s error %x\n", -+ (unsigned long long)backref->ref_root, -+ (unsigned long long)backref->dir, -+ (unsigned long long)backref->index, -+ backref->namelen, backref->name, -+ backref->errors); -+ } -+ } -+ return errors > 0 ? 1 : 0; -+} -+ -+static int process_root_ref(struct extent_buffer *eb, int slot, -+ struct btrfs_key *key, -+ struct cache_tree *root_cache) -+{ -+ u64 dirid; -+ u64 index; -+ u32 len; -+ u32 name_len; -+ struct btrfs_root_ref *ref; -+ char namebuf[BTRFS_NAME_LEN]; -+ int error; -+ -+ ref = btrfs_item_ptr(eb, slot, struct btrfs_root_ref); -+ -+ dirid = btrfs_root_ref_dirid(eb, ref); -+ index = btrfs_root_ref_sequence(eb, ref); -+ name_len = btrfs_root_ref_name_len(eb, ref); -+ -+ if (name_len <= BTRFS_NAME_LEN) { -+ len = name_len; -+ error = 0; -+ } else { -+ len = BTRFS_NAME_LEN; -+ error = REF_ERR_NAME_TOO_LONG; -+ } -+ read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len); -+ -+ if (key->type == BTRFS_ROOT_REF_KEY) { -+ add_root_backref(root_cache, key->offset, key->objectid, dirid, -+ index, namebuf, len, key->type, error); -+ } else { -+ add_root_backref(root_cache, key->objectid, key->offset, dirid, -+ index, namebuf, len, key->type, error); -+ } -+ return 0; -+} -+ - static int check_fs_root(struct btrfs_root *root, -+ struct cache_tree *root_cache, - struct walk_control *wc) - { - int ret = 0; -@@ -1219,10 +1579,18 @@ static int check_fs_root(struct btrfs_root *root, - int level; - struct btrfs_path path; - struct shared_node root_node; -+ struct root_record *rec; - struct btrfs_root_item *root_item = &root->root_item; - -+ if (root->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID) { -+ rec = get_root_rec(root_cache, root->root_key.objectid); -+ if (btrfs_root_refs(root_item) > 0) -+ rec->found_root_item = 1; -+ } -+ - btrfs_init_path(&path); - memset(&root_node, 0, sizeof(root_node)); -+ cache_tree_init(&root_node.root_cache); - cache_tree_init(&root_node.inode_cache); - - level = btrfs_header_level(root->node); -@@ -1266,6 +1634,8 @@ static int check_fs_root(struct btrfs_root *root, - } - btrfs_release_path(root, &path); - -+ merge_root_recs(root, &root_node.root_cache, root_cache); -+ - if (root_node.current) { - root_node.current->checked = 1; - maybe_free_inode_rec(&root_node.inode_cache, -@@ -1280,13 +1650,15 @@ static int fs_root_objectid(u64 objectid) - { - if (objectid == BTRFS_FS_TREE_OBJECTID || - objectid == BTRFS_TREE_RELOC_OBJECTID || -+ objectid == BTRFS_DATA_RELOC_TREE_OBJECTID || - (objectid >= BTRFS_FIRST_FREE_OBJECTID && -- objectid < BTRFS_LAST_FREE_OBJECTID)) -+ objectid <= BTRFS_LAST_FREE_OBJECTID)) - return 1; - return 0; - } - --static int check_fs_roots(struct btrfs_root *root) -+static int check_fs_roots(struct btrfs_root *root, -+ struct cache_tree *root_cache) - { - struct btrfs_path path; - struct btrfs_key key; -@@ -1319,10 +1691,14 @@ static int check_fs_roots(struct btrfs_root *root) - fs_root_objectid(key.objectid)) { - tmp_root = btrfs_read_fs_root_no_cache(root->fs_info, - &key); -- ret = check_fs_root(tmp_root, &wc); -+ ret = check_fs_root(tmp_root, root_cache, &wc); - if (ret) - err = 1; - btrfs_free_fs_root(root->fs_info, tmp_root); -+ } else if (key.type == BTRFS_ROOT_REF_KEY || -+ key.type == BTRFS_ROOT_BACKREF_KEY) { -+ process_root_ref(leaf, path.slots[0], &key, -+ root_cache); - } - path.slots[0]++; - } -@@ -1895,7 +2271,6 @@ static int add_data_backref(struct cache_tree *extent_cache, u64 bytenr, - return 0; - } - -- - static int add_pending(struct cache_tree *pending, - struct cache_tree *seen, u64 bytenr, u32 size) - { -@@ -2443,14 +2818,45 @@ static void print_usage(void) - - int main(int ac, char **av) - { -+ struct cache_tree root_cache; - struct btrfs_root *root; -+ u64 bytenr = 0; - int ret; -+ int num; - -- if (ac < 2) -+ while(1) { -+ int c; -+ c = getopt(ac, av, "s:"); -+ if (c < 0) -+ break; -+ switch(c) { -+ case 's': -+ num = atol(optarg); -+ bytenr = btrfs_sb_offset(num); -+ printf("using SB copy %d, bytenr %llu\n", num, -+ (unsigned long long)bytenr); -+ break; -+ default: -+ print_usage(); -+ } -+ } -+ ac = ac - optind; -+ -+ if (ac != 1) - print_usage(); - - radix_tree_init(); -- root = open_ctree(av[1], 0, 0); -+ cache_tree_init(&root_cache); -+ -+ if((ret = check_mounted(av[optind])) < 0) { -+ fprintf(stderr, "Could not check mount status: %s\n", strerror(ret)); -+ return ret; -+ } else if(ret) { -+ fprintf(stderr, "%s is currently mounted. Aborting.\n", av[optind]); -+ return -EBUSY; -+ } -+ -+ root = open_ctree(av[optind], bytenr, 0); - - if (root == NULL) - return 1; -@@ -2458,10 +2864,15 @@ int main(int ac, char **av) - ret = check_extents(root); - if (ret) - goto out; -- ret = check_fs_roots(root); -+ ret = check_fs_roots(root, &root_cache); -+ if (ret) -+ goto out; - -+ ret = check_root_refs(root, &root_cache); - out: -+ free_root_recs(&root_cache); - close_ctree(root); -+ - if (found_old_backref) { - /* - * there was a disk format change when mixed -diff --git a/btrfsctl.c b/btrfsctl.c -index b323818..92bdf39 100644 ---- a/btrfsctl.c -+++ b/btrfsctl.c -@@ -29,6 +29,7 @@ - #include <unistd.h> - #include <dirent.h> - #include <libgen.h> -+#include <stdlib.h> - #include "kerncompat.h" - #include "ctree.h" - #include "transaction.h" -@@ -46,7 +47,7 @@ static inline int ioctl(int fd, int define, void *arg) { return 0; } - static void print_usage(void) - { - printf("usage: btrfsctl [ -d file|dir] [ -s snap_name subvol|tree ]\n"); -- printf(" [-r size] [-A device] [-a] [-c]\n"); -+ printf(" [-r size] [-A device] [-a] [-c] [-D dir .]\n"); - printf("\t-d filename: defragments one file\n"); - printf("\t-d directory: defragments the entire Btree\n"); - printf("\t-s snap_name dir: creates a new snapshot of dir\n"); -@@ -55,6 +56,9 @@ static void print_usage(void) - printf("\t-A device: scans the device file for a Btrfs filesystem\n"); - printf("\t-a: scans all devices for Btrfs filesystems\n"); - printf("\t-c: forces a single FS sync\n"); -+ printf("\t-D: delete snapshot\n"); -+ printf("\t-m [tree id] directory: set the default mounted subvolume" -+ " to the [tree id] or the directory\n"); - printf("%s\n", BTRFS_BUILD_VERSION); - exit(1); - } -@@ -99,7 +103,9 @@ int main(int ac, char **av) - int i; - unsigned long command = 0; - int len; -+ char *pos; - char *fullpath; -+ u64 objectid = 0; - - if (ac == 2 && strcmp(av[1], "-a") == 0) { - fprintf(stderr, "Scanning for Btrfs filesystems\n"); -@@ -158,6 +164,28 @@ int main(int ac, char **av) - print_usage(); - } - command = BTRFS_IOC_DEFRAG; -+ } else if (strcmp(av[i], "-D") == 0) { -+ if (i >= ac - 1) { -+ fprintf(stderr, "-D requires an arg\n"); -+ print_usage(); -+ } -+ command = BTRFS_IOC_SNAP_DESTROY; -+ name = av[i + 1]; -+ len = strlen(name); -+ pos = strchr(name, '/'); -+ if (pos) { -+ if (*(pos + 1) == '\0') -+ *(pos) = '\0'; -+ else { -+ fprintf(stderr, -+ "error: / not allowed in names\n"); -+ exit(1); -+ } -+ } -+ if (len == 0 || len >= BTRFS_VOL_NAME_MAX) { -+ fprintf(stderr, "-D size too long\n"); -+ exit(1); -+ } - } else if (strcmp(av[i], "-A") == 0) { - if (i >= ac - 1) { - fprintf(stderr, "-A requires an arg\n"); -@@ -178,6 +206,16 @@ int main(int ac, char **av) - command = BTRFS_IOC_RESIZE; - } else if (strcmp(av[i], "-c") == 0) { - command = BTRFS_IOC_SYNC; -+ } else if (strcmp(av[i], "-m") == 0) { -+ command = BTRFS_IOC_DEFAULT_SUBVOL; -+ if (i == ac - 3) { -+ objectid = (unsigned long long) -+ strtoll(av[i + 1], NULL, 0); -+ if (errno == ERANGE) { -+ fprintf(stderr, "invalid tree id\n"); -+ exit(1); -+ } -+ } - } - } - if (command == 0) { -@@ -206,6 +244,9 @@ int main(int ac, char **av) - if (command == BTRFS_IOC_SNAP_CREATE) { - args.fd = fd; - ret = ioctl(snap_fd, command, &args); -+ } else if (command == BTRFS_IOC_DEFAULT_SUBVOL) { -+ printf("objectid is %llu\n", objectid); -+ ret = ioctl(fd, command, &objectid); - } else - ret = ioctl(fd, command, &args); - if (ret < 0) { -@@ -219,8 +260,8 @@ int main(int ac, char **av) - } - printf("%s\n", BTRFS_BUILD_VERSION); - if (ret) -- exit(0); -- else - exit(1); -+ -+ return 0; - } - -diff --git a/convert.c b/convert.c -index d2c9efa..d037c98 100644 ---- a/convert.c -+++ b/convert.c -@@ -370,7 +370,6 @@ static int record_file_extent(struct btrfs_trans_handle *trans, - struct btrfs_extent_item *ei; - u32 blocksize = root->sectorsize; - u64 nbytes; -- u64 bytes_used; - - if (disk_bytenr == 0) { - ret = btrfs_insert_file_extent(trans, root, objectid, -@@ -432,9 +431,6 @@ static int record_file_extent(struct btrfs_trans_handle *trans, - nbytes = btrfs_stack_inode_nbytes(inode) + num_bytes; - btrfs_set_stack_inode_nbytes(inode, nbytes); - -- bytes_used = btrfs_root_used(&root->root_item); -- btrfs_set_root_used(&root->root_item, bytes_used + num_bytes); -- - btrfs_release_path(root, &path); - - ins_key.objectid = disk_bytenr; -@@ -454,9 +450,6 @@ static int record_file_extent(struct btrfs_trans_handle *trans, - - btrfs_mark_buffer_dirty(leaf); - -- bytes_used = btrfs_super_bytes_used(&info->super_copy); -- btrfs_set_super_bytes_used(&info->super_copy, bytes_used + -- num_bytes); - ret = btrfs_update_block_group(trans, root, disk_bytenr, - num_bytes, 1, 0); - if (ret) -diff --git a/ctree.h b/ctree.h -index a9062ea..b79e238 100644 ---- a/ctree.h -+++ b/ctree.h -@@ -350,11 +350,13 @@ struct btrfs_super_block { - * ones specified below then we will fail to mount - */ - #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) -+#define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (2ULL << 0) - - #define BTRFS_FEATURE_COMPAT_SUPP 0ULL - #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL - #define BTRFS_FEATURE_INCOMPAT_SUPP \ -- BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF -+ (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ -+ BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL) - - /* - * A leaf is full of items. offset and size tell us where to find -@@ -1047,6 +1049,7 @@ BTRFS_SETGET_STACK_FUNCS(block_group_flags, - - /* struct btrfs_inode_ref */ - BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); -+BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); - BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); - - /* struct btrfs_inode_item */ -@@ -1325,6 +1328,10 @@ BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); - BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); - BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); - -+BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid, struct btrfs_root_ref, dirid, 64); -+BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence, struct btrfs_root_ref, sequence, 64); -+BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len, struct btrfs_root_ref, name_len, 16); -+ - /* struct btrfs_dir_item */ - BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); - BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); -@@ -1572,6 +1579,7 @@ static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) - - /* struct btrfs_file_extent_item */ - BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); -+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item, type, 8); - - static inline unsigned long btrfs_file_extent_inline_start(struct - btrfs_file_extent_item *e) -@@ -1588,18 +1596,30 @@ static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) - - BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, - disk_bytenr, 64); -+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, struct btrfs_file_extent_item, -+ disk_bytenr, 64); - BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, - generation, 64); -+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, struct btrfs_file_extent_item, -+ generation, 64); - BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, - disk_num_bytes, 64); - BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, - offset, 64); -+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, struct btrfs_file_extent_item, -+ offset, 64); - BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, - num_bytes, 64); -+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, struct btrfs_file_extent_item, -+ num_bytes, 64); - BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, - ram_bytes, 64); -+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes, struct btrfs_file_extent_item, -+ ram_bytes, 64); - BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, - compression, 8); -+BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, struct btrfs_file_extent_item, -+ compression, 8); - BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, - encryption, 8); - BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, -diff --git a/debug-tree.c b/debug-tree.c -index 1d47519..0525354 100644 ---- a/debug-tree.c -+++ b/debug-tree.c -@@ -116,19 +116,27 @@ int main(int ac, char **av) - int ret; - int slot; - int extent_only = 0; -+ int device_only = 0; -+ u64 block_only = 0; - struct btrfs_root *tree_root_scan; - - radix_tree_init(); - - while(1) { - int c; -- c = getopt(ac, av, "e"); -+ c = getopt(ac, av, "deb:"); - if (c < 0) - break; - switch(c) { - case 'e': - extent_only = 1; - break; -+ case 'd': -+ device_only = 1; -+ break; -+ case 'b': -+ block_only = atoll(optarg); -+ break; - default: - print_usage(); - } -@@ -142,14 +150,37 @@ int main(int ac, char **av) - fprintf(stderr, "unable to open %s\n", av[optind]); - exit(1); - } -+ if (block_only) { -+ leaf = read_tree_block(root, -+ block_only, -+ root->leafsize, 0); -+ -+ if (leaf && btrfs_header_level(leaf) != 0) { -+ free_extent_buffer(leaf); -+ leaf = NULL; -+ } -+ -+ if (!leaf) { -+ leaf = read_tree_block(root, -+ block_only, -+ root->nodesize, 0); -+ } -+ if (!leaf) { -+ fprintf(stderr, "failed to read %llu\n", block_only); -+ return 0; -+ } -+ btrfs_print_tree(root, leaf, 0); -+ return 0; -+ } -+ - if (!extent_only) { - printf("root tree\n"); - btrfs_print_tree(root->fs_info->tree_root, -- root->fs_info->tree_root->node); -+ root->fs_info->tree_root->node, 1); - - printf("chunk tree\n"); - btrfs_print_tree(root->fs_info->chunk_root, -- root->fs_info->chunk_root->node); -+ root->fs_info->chunk_root->node, 1); - } - tree_root_scan = root->fs_info->tree_root; - -@@ -175,7 +206,7 @@ again: - if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) { - unsigned long offset; - struct extent_buffer *buf; -- int skip = extent_only; -+ int skip = extent_only | device_only; - - offset = btrfs_item_ptr_offset(leaf, slot); - read_extent_buffer(leaf, &ri, offset, sizeof(ri)); -@@ -188,8 +219,9 @@ again: - printf("root"); - break; - case BTRFS_EXTENT_TREE_OBJECTID: -- skip = 0; -- if (!extent_only) -+ if (!device_only) -+ skip = 0; -+ if (!extent_only && !device_only) - printf("extent"); - break; - case BTRFS_CHUNK_TREE_OBJECTID: -@@ -198,9 +230,8 @@ again: - } - break; - case BTRFS_DEV_TREE_OBJECTID: -- if (!skip) { -- printf("device"); -- } -+ skip = 0; -+ printf("device"); - break; - case BTRFS_FS_TREE_OBJECTID: - if (!skip) { -@@ -208,9 +239,8 @@ again: - } - break; - case BTRFS_ROOT_TREE_DIR_OBJECTID: -- if (!skip) { -- printf("directory"); -- } -+ skip = 0; -+ printf("directory"); - break; - case BTRFS_CSUM_TREE_OBJECTID: - if (!skip) { -@@ -256,13 +286,13 @@ again: - printf("file"); - } - } -- if (!skip && !extent_only) { -+ if (extent_only && !skip) { -+ print_extents(tree_root_scan, buf); -+ } else if (!skip) { - printf(" tree "); - btrfs_print_key(&disk_key); - printf(" \n"); -- btrfs_print_tree(tree_root_scan, buf); -- } else if (extent_only && !skip) { -- print_extents(tree_root_scan, buf); -+ btrfs_print_tree(tree_root_scan, buf, 1); - } - } - path.slots[0]++; -@@ -275,7 +305,7 @@ again: - goto again; - } - -- if (extent_only) -+ if (extent_only || device_only) - return 0; - - printf("total bytes %llu\n", -diff --git a/dir-test.c b/dir-test.c -index 44f2758..3ae9c68 100644 ---- a/dir-test.c -+++ b/dir-test.c -@@ -485,7 +485,7 @@ int main(int ac, char **av) - if (ret) { - fprintf(stderr, "op %d failed %d:%d\n", - op, i, iterations); -- btrfs_print_tree(root, root->node); -+ btrfs_print_tree(root, root->node, 1); - fprintf(stderr, "op %d failed %d:%d\n", - op, i, iterations); - err = ret; -diff --git a/disk-io.c b/disk-io.c -index addebe1..a6e1000 100644 ---- a/disk-io.c -+++ b/disk-io.c -@@ -86,7 +86,7 @@ int csum_tree_block_size(struct extent_buffer *buf, u16 csum_size, - if (memcmp_extent_buffer(buf, result, 0, csum_size)) { - printk("checksum verify failed on %llu wanted %X " - "found %X\n", (unsigned long long)buf->start, -- *((int *)result), *((int *)buf)); -+ *((int *)result), *((char *)buf->data)); - free(result); - return 1; - } -@@ -970,13 +970,13 @@ int close_ctree(struct btrfs_root *root) - if (fs_info->csum_root->node) - free_extent_buffer(fs_info->csum_root->node); - -- if (root->fs_info->log_root_tree) { -- if (root->fs_info->log_root_tree->node) -- free_extent_buffer(root->fs_info->log_root_tree->node); -- free(root->fs_info->log_root_tree); -+ if (fs_info->log_root_tree) { -+ if (fs_info->log_root_tree->node) -+ free_extent_buffer(fs_info->log_root_tree->node); -+ free(fs_info->log_root_tree); - } - -- close_all_devices(root->fs_info); -+ close_all_devices(fs_info); - extent_io_tree_cleanup(&fs_info->extent_cache); - extent_io_tree_cleanup(&fs_info->free_space_cache); - extent_io_tree_cleanup(&fs_info->block_group_cache); -diff --git a/ioctl-test.c b/ioctl-test.c -new file mode 100644 -index 0000000..7cf3bc2 ---- /dev/null -+++ b/ioctl-test.c -@@ -0,0 +1,36 @@ -+#include <stdio.h> -+#include <stdlib.h> -+#include "kerncompat.h" -+#include "ioctl.h" -+ -+unsigned long ioctls[] = { -+ BTRFS_IOC_SNAP_CREATE, -+ BTRFS_IOC_DEFRAG, -+ BTRFS_IOC_RESIZE, -+ BTRFS_IOC_SCAN_DEV, -+ BTRFS_IOC_TRANS_START, -+ BTRFS_IOC_TRANS_END, -+ BTRFS_IOC_SYNC, -+ BTRFS_IOC_CLONE, -+ BTRFS_IOC_ADD_DEV, -+ BTRFS_IOC_RM_DEV, -+ BTRFS_IOC_BALANCE, -+ BTRFS_IOC_SUBVOL_CREATE, -+ BTRFS_IOC_SNAP_DESTROY, -+ BTRFS_IOC_DEFRAG_RANGE, -+ BTRFS_IOC_TREE_SEARCH, -+ BTRFS_IOC_INO_LOOKUP, -+ BTRFS_IOC_DEFAULT_SUBVOL, -+ BTRFS_IOC_SPACE_INFO, -+ 0 }; -+ -+int main(int ac, char **av) -+{ -+ int i = 0; -+ while(ioctls[i]) { -+ printf("%lu\n" ,ioctls[i]); -+ i++; -+ } -+ return 0; -+} -+ -diff --git a/ioctl.h b/ioctl.h -index a084f33..776d7a9 100644 ---- a/ioctl.h -+++ b/ioctl.h -@@ -30,6 +30,108 @@ struct btrfs_ioctl_vol_args { - char name[BTRFS_PATH_NAME_MAX + 1]; - }; - -+struct btrfs_ioctl_search_key { -+ /* which root are we searching. 0 is the tree of tree roots */ -+ __u64 tree_id; -+ -+ /* keys returned will be >= min and <= max */ -+ __u64 min_objectid; -+ __u64 max_objectid; -+ -+ /* keys returned will be >= min and <= max */ -+ __u64 min_offset; -+ __u64 max_offset; -+ -+ /* max and min transids to search for */ -+ __u64 min_transid; -+ __u64 max_transid; -+ -+ /* keys returned will be >= min and <= max */ -+ __u32 min_type; -+ __u32 max_type; -+ -+ /* -+ * how many items did userland ask for, and how many are we -+ * returning -+ */ -+ __u32 nr_items; -+ -+ /* align to 64 bits */ -+ __u32 unused; -+ -+ /* some extra for later */ -+ __u64 unused1; -+ __u64 unused2; -+ __u64 unused3; -+ __u64 unused4; -+}; -+ -+struct btrfs_ioctl_search_header { -+ __u64 transid; -+ __u64 objectid; -+ __u64 offset; -+ __u32 type; -+ __u32 len; -+} __attribute__((may_alias)); -+ -+#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) -+/* -+ * the buf is an array of search headers where -+ * each header is followed by the actual item -+ * the type field is expanded to 32 bits for alignment -+ */ -+struct btrfs_ioctl_search_args { -+ struct btrfs_ioctl_search_key key; -+ char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; -+}; -+ -+#define BTRFS_INO_LOOKUP_PATH_MAX 4080 -+struct btrfs_ioctl_ino_lookup_args { -+ __u64 treeid; -+ __u64 objectid; -+ char name[BTRFS_INO_LOOKUP_PATH_MAX]; -+}; -+ -+/* flags for the defrag range ioctl */ -+#define BTRFS_DEFRAG_RANGE_COMPRESS 1 -+#define BTRFS_DEFRAG_RANGE_START_IO 2 -+ -+struct btrfs_ioctl_defrag_range_args { -+ /* start of the defrag operation */ -+ __u64 start; -+ -+ /* number of bytes to defrag, use (u64)-1 to say all */ -+ __u64 len; -+ -+ /* -+ * flags for the operation, which can include turning -+ * on compression for this one defrag -+ */ -+ __u64 flags; -+ -+ /* -+ * any extent bigger than this will be considered -+ * already defragged. Use 0 to take the kernel default -+ * Use 1 to say every single extent must be rewritten -+ */ -+ __u32 extent_thresh; -+ -+ /* spare for later */ -+ __u32 unused[5]; -+}; -+ -+struct btrfs_ioctl_space_info { -+ __u64 flags; -+ __u64 total_bytes; -+ __u64 used_bytes; -+}; -+ -+struct btrfs_ioctl_space_args { -+ __u64 space_slots; -+ __u64 total_spaces; -+ struct btrfs_ioctl_space_info spaces[0]; -+}; -+ - #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ - struct btrfs_ioctl_vol_args) - #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ -@@ -56,4 +158,15 @@ struct btrfs_ioctl_vol_args { - /* 13 is for CLONE_RANGE */ - #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ - struct btrfs_ioctl_vol_args) -+#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ -+ struct btrfs_ioctl_vol_args) -+#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ -+ struct btrfs_ioctl_defrag_range_args) -+#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ -+ struct btrfs_ioctl_search_args) -+#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ -+ struct btrfs_ioctl_ino_lookup_args) -+#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64) -+#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ -+ struct btrfs_ioctl_space_args) - #endif -diff --git a/kerncompat.h b/kerncompat.h -index e4c8ce0..46236cd 100644 ---- a/kerncompat.h -+++ b/kerncompat.h -@@ -42,7 +42,11 @@ - #define GFP_NOFS 0 - #define __read_mostly - #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) -+ -+#ifndef ULONG_MAX - #define ULONG_MAX (~0UL) -+#endif -+ - #define BUG() abort() - #ifdef __CHECKER__ - #define __force __attribute__((force)) -diff --git a/man/Makefile b/man/Makefile -index 4e8893b..4a90b75 100644 ---- a/man/Makefile -+++ b/man/Makefile -@@ -7,13 +7,16 @@ mandir = $(prefix)/man - man8dir = $(mandir)/man8 - - MANPAGES = mkfs.btrfs.8.gz btrfsctl.8.gz btrfsck.8.gz btrfs-image.8.gz \ -- btrfs-show.8.gz -+ btrfs-show.8.gz btrfs.8.gz - - all: $(MANPAGES) - - mkfs.btrfs.8.gz: mkfs.btrfs.8.in - $(GZIP) -n -c mkfs.btrfs.8.in > mkfs.btrfs.8.gz - -+btrfs.8.gz: btrfs.8.in -+ $(GZIP) -n -c btrfs.8.in > btrfs.8.gz -+ - btrfsctl.8.gz: btrfsctl.8.in - $(GZIP) -n -c btrfsctl.8.in > btrfsctl.8.gz - -diff --git a/man/btrfs.8.in b/man/btrfs.8.in -new file mode 100644 -index 0000000..26ef982 ---- /dev/null -+++ b/man/btrfs.8.in -@@ -0,0 +1,170 @@ -+.TH BTRFS 8 "" "btrfs" "btrfs" -+." -+." Man page written by Goffredo Baroncelli kreijack@inwind.it (Feb 2010) -+." -+.SH NAME -+btrfs - control a btrfs filesystem -+.SH SYNOPSIS -+\fBbtrfs\fP \fBsubvolume snapshot\fP\fI <source> [<dest>/]<name>\fP -+.PP -+\fBbtrfs\fP \fBsubvolume delete\fP\fI <subvolume>\fP -+.PP -+\fBbtrfs\fP \fBsubvolume create\fP\fI [<dest>/]<name>\fP -+.PP -+\fBbtrfs\fP \fBsubvolume list\fP\fI <path>\fP -+.PP -+\fBbtrfs\fP \fBsubvolume set-default\fP\fI <id> <path>\fP -+.PP -+\fBbtrfs\fP \fBfilesystem defrag\fP\fI <file>|<dir> [<file>|<dir>...]\fP -+.PP -+\fBbtrfs\fP \fBfilesystem sync\fP\fI <path> \fP -+.PP -+\fBbtrfs\fP \fBfilesystem resize\fP\fI [+/-]<size>[gkm]|max <filesystem>\fP -+.PP -+\fBbtrfs\fP \fBdevice scan\fP\fI [<device> [<device>..]]\fP -+.PP -+\fBbtrfs\fP \fBdevice show\fP\fI <dev>|<label> [<dev>|<label>...]\fP -+.PP -+\fBbtrfs\fP \fBdevice balance\fP\fI <path> \fP -+.PP -+\fBbtrfs\fP \fBdevice add\fP\fI <dev> [<dev>..] <path> \fP -+.PP -+\fBbtrfs\fP \fBdevice delete\fP\fI <dev> [<dev>..] <path> \fP] -+ -+.PP -+\fBbtrfs\fP \fBhelp|--help|-h \fP\fI\fP -+.PP -+.SH DESCRIPTION -+.B btrfs -+is used to control the filesystem and the files and directories stored. It is -+the tool to create or destroy a snapshot or a subvolume for the -+filesystem, to defrag a file or a directory, flush the data to the disk, -+to resize the filesystem, to scan the device. -+ -+It is possible to abbreviate the commands unless the commands are ambiguous. -+For example: it is possible to run -+.I btrfs sub snaps -+instead of -+.I btrfs subvolume snapshot. -+But -+.I btrfs dev s -+is not allowed, because -+.I dev s -+may be interpreted both as -+.I device show -+and as -+.I device scan. -+In this case -+.I btrfs -+returns an error. -+ -+If a command is terminated by -+.I --help -+, the relevant help is showed. If the passed command matches more commands, -+the help of all the matched commands are showed. For example -+.I btrfs dev --help -+shows the help of all -+.I device* -+command. -+ -+.SH COMMANDS -+.TP -+ -+\fBsubvolume snapshot\fR\fI <source> [<dest>/]<name>\fR -+Create a writable snapshot of the subvolume \fI<source>\fR with the name -+\fI<name>\fR in the \fI<dest>\fR directory. If \fI<source>\fR is not a -+subvolume, \fBbtrfs\fR returns an error. -+.TP -+ -+\fBsubvolume delete\fR\fI <subvolume>\fR -+Delete the subvolume \fI<subvolume>\fR. If \fI<subvolume>\fR is not a -+subvolume, \fBbtrfs\fR returns an error. -+.TP -+ -+\fBsubvolume create\fR\fI [<dest>/]<name>\fR -+Create a subvolume in \fI<dest>\fR (or in the current directory if -+\fI<dest>\fR is omitted). -+.TP -+ -+\fBsubvolume list\fR\fI <path>\fR -+List the subvolumes present in the filesystem \fI<path>\fR. For every -+subvolume is showed the subvolume ID (second column), -+the ID of the \fItop level\fR -+subvolume (fifth column), and the path (seventh column) relative to the -+\fItop level\fR subvolume. -+These <ID> may be used by the \fBsubvolume set-default\fR command, or at -+mount time via the \fIsubvol=\fR option. -+.TP -+ -+\fBsubvolume set-default\fR\fI <id> <path>\fR -+Set the subvolume of the filesystem \fI<path>\fR which is mounted as -+\fIdefault\fR. The subvolume is identified by \fB<id>\fR, which -+is returned by the \fBsubvolume list\fR command. -+.TP -+ -+\fBfilesystem defragment\fP\fI <file>|<dir> [<file>|<dir>...]\fR -+Defragment files and/or directories. -+.TP -+ -+\fBdevice scan\fR \fI[<device> [<device>..]]\fR -+Scan devices for a btrfs filesystem. If no devices are passed, \fBbtrfs\fR scans -+all the block devices. -+.TP -+ -+\fBfilesystem sync\fR\fI <path> \fR -+Force a sync for the filesystem identified by \fI<path>\fR. -+.TP -+ -+." -+." Some wording are extracted by the resize2fs man page -+." -+ -+\fBfilesystem resize\fR\fI [+/-]<size>[gkm]|max <path>\fR -+Resize a filesystem identified by \fI<path>\fR. -+The \fI<size>\fR parameter specifies the new size of the filesystem. -+If the prefix \fI+\fR or \fI-\fR is present the size is increased or decreased -+by the quantity \fI<size>\fR. -+If no units are specified, the unit of the \fI<size>\fR parameter defaults to -+bytes. Optionally, the size parameter may be suffixed by one of the following -+the units designators: 'K', 'M', or 'G', kilobytes, megabytes, or gigabytes, -+respectively. -+ -+If 'max' is passed, the filesystem will occupy all available space on the -+volume(s). -+ -+The \fBresize\fR command \fBdoes not\fR manipulate the size of underlying -+partition. If you wish to enlarge/reduce a filesystem, you must make sure you -+can expand the partition before enlarging the filesystem and shrink the -+partition after reducing the size of the filesystem. -+.TP -+ -+\fBfilesystem show\fR [<uuid>|<label>]\fR -+Show the btrfs filesystem with some additional info. If no UUID or label is -+passed, \fBbtrfs\fR show info of all the btrfs filesystem. -+.TP -+ -+\fBdevice balance\fR \fI<path>\fR -+Balance the chunks of the filesystem identified by \fI<path>\fR -+across the devices. -+.TP -+ -+\fBdevice add\fR\fI <dev> [<dev>..] <path>\fR -+Add device(s) to the filesystem identified by \fI<path>\fR. -+.TP -+ -+\fBdevice delete\fR\fI <dev> [<dev>..] <path>\fR -+Remove device(s) from a filesystem identified by \fI<path>\fR. -+.PP -+ -+.SH EXIT STATUS -+\fBbtrfs\fR returns a zero exist status if it succeeds. Non zero is returned in -+case of failure. -+ -+.SH AVAILABILITY -+.B btrfs -+is part of btrfs-progs. Btrfs filesystem is currently under heavy development, -+and not suitable for any uses other than benchmarking and review. -+Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for -+further details. -+.SH SEE ALSO -+.BR mkfs.btrfs (8) -diff --git a/print-tree.c b/print-tree.c -index 59f4358..ac575d5 100644 ---- a/print-tree.c -+++ b/print-tree.c -@@ -413,8 +413,11 @@ static void print_objectid(unsigned long long objectid, u8 type) - printf("MULTIPLE"); - break; - case BTRFS_FIRST_CHUNK_TREE_OBJECTID: -- printf("FIRST_CHUNK_TREE"); -- break; -+ if (type == BTRFS_CHUNK_ITEM_KEY) { -+ printf("FIRST_CHUNK_TREE"); -+ break; -+ } -+ /* fall-thru */ - default: - printf("%llu", objectid); - } -@@ -607,7 +610,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) - } - } - --void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb) -+void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow) - { - int i; - u32 nr; -@@ -643,6 +646,9 @@ void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb) - (unsigned long long)btrfs_node_ptr_generation(eb, i)); - fflush(stdout); - } -+ if (!follow) -+ return; -+ - for (i = 0; i < nr; i++) { - struct extent_buffer *next = read_tree_block(root, - btrfs_node_blockptr(eb, i), -@@ -660,8 +666,7 @@ void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb) - if (btrfs_header_level(next) != - btrfs_header_level(eb) - 1) - BUG(); -- btrfs_print_tree(root, next); -+ btrfs_print_tree(root, next, 1); - free_extent_buffer(next); - } - } -- -diff --git a/print-tree.h b/print-tree.h -index 4d1a01a..495b81a 100644 ---- a/print-tree.h -+++ b/print-tree.h -@@ -19,6 +19,6 @@ - #ifndef __PRINT_TREE_ - #define __PRINT_TREE_ - void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l); --void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *t); -+void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *t, int follow); - void btrfs_print_key(struct btrfs_disk_key *disk_key); - #endif -diff --git a/quick-test.c b/quick-test.c -index 351c706..fa6fd83 100644 ---- a/quick-test.c -+++ b/quick-test.c -@@ -85,7 +85,7 @@ int main(int ac, char **av) { - fprintf(stderr, "search %d:%d\n", num, i); - ret = btrfs_search_slot(NULL, root, &ins, &path, 0, 0); - if (ret) { -- btrfs_print_tree(root, root->node); -+ btrfs_print_tree(root, root->node, 1); - printf("unable to find %d\n", num); - exit(1); - } -@@ -148,7 +148,7 @@ int main(int ac, char **av) { - fprintf(stderr, "search %d:%d\n", num, i); - ret = btrfs_search_slot(NULL, root, &ins, &path, 0, 0); - if (ret) { -- btrfs_print_tree(root, root->node); -+ btrfs_print_tree(root, root->node, 1); - printf("unable to find %d\n", num); - exit(1); - } -@@ -196,7 +196,7 @@ int main(int ac, char **av) { - btrfs_commit_transaction(trans, root); - printf("tree size is now %d\n", tree_size); - printf("root %p commit root %p\n", root->node, root->commit_root); -- btrfs_print_tree(root, root->node); -+ btrfs_print_tree(root, root->node, 1); - close_ctree(root); - return 0; - } -diff --git a/random-test.c b/random-test.c -index 571735d..0003236 100644 ---- a/random-test.c -+++ b/random-test.c -@@ -404,7 +404,7 @@ int main(int ac, char **av) - if (ret) { - fprintf(stderr, "op %d failed %d:%d\n", - op, i, iterations); -- btrfs_print_tree(root, root->node); -+ btrfs_print_tree(root, root->node, 1); - fprintf(stderr, "op %d failed %d:%d\n", - op, i, iterations); - err = ret; -diff --git a/utils.c b/utils.c -index 2f4c6e1..fd894f3 100644 ---- a/utils.c -+++ b/utils.c -@@ -31,6 +31,10 @@ - #include <fcntl.h> - #include <unistd.h> - #include <mntent.h> -+#include <linux/loop.h> -+#include <linux/major.h> -+#include <linux/kdev_t.h> -+#include <limits.h> - #include "kerncompat.h" - #include "radix-tree.h" - #include "ctree.h" -@@ -586,55 +590,224 @@ error: - return ret; - } - -+/* checks if a device is a loop device */ -+int is_loop_device (const char* device) { -+ struct stat statbuf; -+ -+ if(stat(device, &statbuf) < 0) -+ return -errno; -+ -+ return (S_ISBLK(statbuf.st_mode) && -+ MAJOR(statbuf.st_rdev) == LOOP_MAJOR); -+} -+ -+ -+/* Takes a loop device path (e.g. /dev/loop0) and returns -+ * the associated file (e.g. /images/my_btrfs.img) */ -+int resolve_loop_device(const char* loop_dev, char* loop_file, int max_len) -+{ -+ int loop_fd; -+ int ret_ioctl; -+ struct loop_info loopinfo; -+ -+ if ((loop_fd = open(loop_dev, O_RDONLY)) < 0) -+ return -errno; -+ -+ ret_ioctl = ioctl(loop_fd, LOOP_GET_STATUS, &loopinfo); -+ close(loop_fd); -+ -+ if (ret_ioctl == 0) -+ strncpy(loop_file, loopinfo.lo_name, max_len); -+ else -+ return -errno; -+ -+ return 0; -+} -+ -+/* Checks whether a and b are identical or device -+ * files associated with the same block device -+ */ -+int is_same_blk_file(const char* a, const char* b) -+{ -+ struct stat st_buf_a, st_buf_b; -+ char real_a[PATH_MAX]; -+ char real_b[PATH_MAX]; -+ -+ if(!realpath(a, real_a) || -+ !realpath(b, real_b)) -+ { -+ return -errno; -+ } -+ -+ /* Identical path? */ -+ if(strcmp(real_a, real_b) == 0) -+ return 1; -+ -+ if(stat(a, &st_buf_a) < 0 || -+ stat(b, &st_buf_b) < 0) -+ { -+ return -errno; -+ } -+ -+ /* Same blockdevice? */ -+ if(S_ISBLK(st_buf_a.st_mode) && -+ S_ISBLK(st_buf_b.st_mode) && -+ st_buf_a.st_rdev == st_buf_b.st_rdev) -+ { -+ return 1; -+ } -+ -+ /* Hardlink? */ -+ if (st_buf_a.st_dev == st_buf_b.st_dev && -+ st_buf_a.st_ino == st_buf_b.st_ino) -+ { -+ return 1; -+ } -+ -+ return 0; -+} -+ -+/* checks if a and b are identical or device -+ * files associated with the same block device or -+ * if one file is a loop device that uses the other -+ * file. -+ */ -+int is_same_loop_file(const char* a, const char* b) -+{ -+ char res_a[PATH_MAX]; -+ char res_b[PATH_MAX]; -+ const char* final_a; -+ const char* final_b; -+ int ret; -+ -+ /* Resolve a if it is a loop device */ -+ if((ret = is_loop_device(a)) < 0) { -+ return ret; -+ } else if(ret) { -+ if((ret = resolve_loop_device(a, res_a, sizeof(res_a))) < 0) -+ return ret; -+ -+ final_a = res_a; -+ } else { -+ final_a = a; -+ } -+ -+ /* Resolve b if it is a loop device */ -+ if((ret = is_loop_device(b)) < 0) { -+ return ret; -+ } else if(ret) { -+ if((ret = resolve_loop_device(b, res_b, sizeof(res_b))) < 0) -+ return ret; -+ -+ final_b = res_b; -+ } else { -+ final_b = b; -+ } -+ -+ return is_same_blk_file(final_a, final_b); -+} -+ -+/* Checks if a file exists and is a block or regular file*/ -+int is_existing_blk_or_reg_file(const char* filename) -+{ -+ struct stat st_buf; -+ -+ if(stat(filename, &st_buf) < 0) { -+ if(errno == ENOENT) -+ return 0; -+ else -+ return -errno; -+ } -+ -+ return (S_ISBLK(st_buf.st_mode) || S_ISREG(st_buf.st_mode)); -+} -+ -+/* Checks if a file is used (directly or indirectly via a loop device) -+ * by a device in fs_devices -+ */ -+int blk_file_in_dev_list(struct btrfs_fs_devices* fs_devices, const char* file) -+{ -+ int ret; -+ struct list_head *head; -+ struct list_head *cur; -+ struct btrfs_device *device; -+ -+ head = &fs_devices->devices; -+ list_for_each(cur, head) { -+ device = list_entry(cur, struct btrfs_device, dev_list); -+ -+ if((ret = is_same_loop_file(device->name, file))) -+ return ret; -+ } -+ -+ return 0; -+} -+ - /* - * returns 1 if the device was mounted, < 0 on error or 0 if everything -- * is safe to continue. TODO, this should also scan multi-device filesystems -+ * is safe to continue. - */ --int check_mounted(char *file) -+int check_mounted(const char* file) - { -- struct mntent *mnt; -- struct stat st_buf; -- dev_t file_dev = 0; -- dev_t file_rdev = 0; -- ino_t file_ino = 0; -+ int ret; -+ int fd; -+ u64 total_devs = 1; -+ int is_btrfs; -+ struct btrfs_fs_devices* fs_devices_mnt = NULL; - FILE *f; -- int ret = 0; -+ struct mntent *mnt; - -- if ((f = setmntent ("/proc/mounts", "r")) == NULL) -+ fd = open(file, O_RDONLY); -+ if (fd < 0) { -+ fprintf (stderr, "check_mounted(): Could not open %s\n", file); - return -errno; -+ } - -- if (stat(file, &st_buf) < 0) { -- return -errno; -- } else { -- if (S_ISBLK(st_buf.st_mode)) { -- file_rdev = st_buf.st_rdev; -- } else { -- file_dev = st_buf.st_dev; -- file_ino = st_buf.st_ino; -- } -+ /* scan the initial device */ -+ ret = btrfs_scan_one_device(fd, file, &fs_devices_mnt, -+ &total_devs, BTRFS_SUPER_INFO_OFFSET); -+ is_btrfs = (ret >= 0); -+ close(fd); -+ -+ /* scan other devices */ -+ if (is_btrfs && total_devs > 1) { -+ if((ret = btrfs_scan_for_fsid(fs_devices_mnt, total_devs, 1))) -+ return ret; - } - -+ /* iterate over the list of currently mountes filesystems */ -+ if ((f = setmntent ("/proc/mounts", "r")) == NULL) -+ return -errno; -+ - while ((mnt = getmntent (f)) != NULL) { -- if (strcmp(file, mnt->mnt_fsname) == 0) -- break; -+ if(is_btrfs) { -+ if(strcmp(mnt->mnt_type, "btrfs") != 0) -+ continue; - -- if (stat(mnt->mnt_fsname, &st_buf) == 0) { -- if (S_ISBLK(st_buf.st_mode)) { -- if (file_rdev && (file_rdev == st_buf.st_rdev)) -- break; -- } else if (file_dev && ((file_dev == st_buf.st_dev) && -- (file_ino == st_buf.st_ino))) { -- break; -- } -+ ret = blk_file_in_dev_list(fs_devices_mnt, mnt->mnt_fsname); -+ } else { -+ /* ignore entries in the mount table that are not -+ associated with a file*/ -+ if((ret = is_existing_blk_or_reg_file(mnt->mnt_fsname)) < 0) -+ goto out_mntloop_err; -+ else if(!ret) -+ continue; -+ -+ ret = is_same_loop_file(file, mnt->mnt_fsname); - } -- } - -- if (mnt) { -- /* found an entry in mnt table */ -- ret = 1; -+ if(ret < 0) -+ goto out_mntloop_err; -+ else if(ret) -+ break; - } - -+ /* Did we find an entry in mnt table? */ -+ ret = (mnt != NULL); -+ -+out_mntloop_err: - endmntent (f); -+ - return ret; - } - -diff --git a/utils.h b/utils.h -index 7ff542b..9dce5b0 100644 ---- a/utils.h -+++ b/utils.h -@@ -36,7 +36,7 @@ int btrfs_scan_for_fsid(struct btrfs_fs_devices *fs_devices, u64 total_devs, - int run_ioctls); - void btrfs_register_one_device(char *fname); - int btrfs_scan_one_dir(char *dirname, int run_ioctl); --int check_mounted(char *devicename); -+int check_mounted(const char *devicename); - int btrfs_device_already_in_root(struct btrfs_root *root, int fd, - int super_offset); - char *pretty_sizes(u64 size); diff --git a/btrfs-progs/patches/btrfs-progs-valgrind.patch b/btrfs-progs/patches/btrfs-progs-valgrind.patch deleted file mode 100644 index decc197..0000000 --- a/btrfs-progs/patches/btrfs-progs-valgrind.patch +++ /dev/null @@ -1,200 +0,0 @@ -diff --git a/btrfsck.c b/btrfsck.c -index 63e44d1..1ae7487 100644 ---- a/btrfsck.c -+++ b/btrfsck.c -@@ -2806,6 +2806,8 @@ static int check_extents(struct btrfs_root *root) - break; - } - ret = check_extent_refs(root, &extent_cache); -+ free_cache_tree(&seen); -+ free(bits); - return ret; - } - -diff --git a/disk-io.c b/disk-io.c -index a6e1000..b903163 100644 ---- a/disk-io.c -+++ b/disk-io.c -@@ -425,8 +425,10 @@ static int find_and_setup_log_root(struct btrfs_root *tree_root, - u64 blocknr = btrfs_super_log_root(disk_super); - struct btrfs_root *log_root = malloc(sizeof(struct btrfs_root)); - -- if (blocknr == 0) -+ if (blocknr == 0) { -+ free(log_root); - return 0; -+ } - - blocksize = btrfs_level_size(tree_root, - btrfs_super_log_root_level(disk_super)); -@@ -605,7 +607,7 @@ struct btrfs_root *open_ctree_fd(int fp, const char *path, u64 sb_bytenr, - struct btrfs_root *chunk_root = malloc(sizeof(struct btrfs_root)); - struct btrfs_root *dev_root = malloc(sizeof(struct btrfs_root)); - struct btrfs_root *csum_root = malloc(sizeof(struct btrfs_root)); -- struct btrfs_fs_info *fs_info = malloc(sizeof(*fs_info)); -+ struct btrfs_fs_info *fs_info = malloc(sizeof(struct btrfs_fs_info)); - int ret; - struct btrfs_super_block *disk_super; - struct btrfs_fs_devices *fs_devices = NULL; -@@ -628,7 +630,7 @@ struct btrfs_root *open_ctree_fd(int fp, const char *path, u64 sb_bytenr, - BUG_ON(ret); - } - -- memset(fs_info, 0, sizeof(*fs_info)); -+ memset(fs_info, 0, sizeof(struct btrfs_fs_info)); - fs_info->tree_root = tree_root; - fs_info->extent_root = extent_root; - fs_info->chunk_root = chunk_root; -@@ -928,15 +930,19 @@ static int close_all_devices(struct btrfs_fs_info *fs_info) - { - struct list_head *list; - struct list_head *next; -+ struct list_head *tmp; - struct btrfs_device *device; - -- return 0; -- - list = &fs_info->fs_devices->devices; -- list_for_each(next, list) { -+ list_for_each_safe(next, tmp, list) { - device = list_entry(next, struct btrfs_device, dev_list); - close(device->fd); -+ list_del(&device->dev_list); -+ free(device->name); -+ free(device->label); -+ free(device); - } -+ free(fs_info->fs_devices); - return 0; - } - -@@ -983,12 +989,14 @@ int close_ctree(struct btrfs_root *root) - extent_io_tree_cleanup(&fs_info->pinned_extents); - extent_io_tree_cleanup(&fs_info->pending_del); - extent_io_tree_cleanup(&fs_info->extent_ins); -+ btrfs_mapping_tree_free(&fs_info->mapping_tree); - - free(fs_info->tree_root); - free(fs_info->extent_root); - free(fs_info->chunk_root); - free(fs_info->dev_root); - free(fs_info->csum_root); -+ free(fs_info->log_root_tree); - free(fs_info); - - return 0; -diff --git a/extent-cache.c b/extent-cache.c -index b871e18..b424975 100644 ---- a/extent-cache.c -+++ b/extent-cache.c -@@ -170,3 +170,14 @@ void remove_cache_extent(struct cache_tree *tree, - rb_erase(&pe->rb_node, &tree->root); - } - -+void free_cache_tree(struct cache_tree *tree) -+{ -+ struct rb_node *node; -+ struct cache_extent *cache; -+ -+ while ((node = rb_last(&tree->root)) != NULL) { -+ cache = rb_entry(node, struct cache_extent, rb_node); -+ remove_cache_extent(tree, cache); -+ free(cache); -+ } -+} -diff --git a/extent-cache.h b/extent-cache.h -index 7f2f2a6..1696bc2 100644 ---- a/extent-cache.h -+++ b/extent-cache.h -@@ -43,6 +43,7 @@ struct cache_extent *find_cache_extent(struct cache_tree *tree, - int insert_cache_extent(struct cache_tree *tree, u64 start, u64 size); - int insert_existing_cache_extent(struct cache_tree *tree, - struct cache_extent *pe); -+void free_cache_tree(struct cache_tree *tree); - - static inline int cache_tree_empty(struct cache_tree *tree) - { -diff --git a/extent-tree.c b/extent-tree.c -index b2f9bb2..e1d7ffd 100644 ---- a/extent-tree.c -+++ b/extent-tree.c -@@ -2985,6 +2985,7 @@ out: - - int btrfs_free_block_groups(struct btrfs_fs_info *info) - { -+ struct btrfs_space_info *space_info; - u64 start; - u64 end; - u64 ptr; -@@ -3008,6 +3009,15 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info) - clear_extent_dirty(&info->free_space_cache, start, - end, GFP_NOFS); - } -+ -+ while (!list_empty(&info->space_info)) { -+ space_info = list_entry(info->space_info.next, -+ struct btrfs_space_info, -+ list); -+ list_del(&space_info->list); -+ kfree(space_info); -+ } -+ - return 0; - } - -diff --git a/extent_io.c b/extent_io.c -index 069c199..71e6826 100644 ---- a/extent_io.c -+++ b/extent_io.c -@@ -572,6 +572,7 @@ static struct extent_buffer *__alloc_extent_buffer(struct extent_io_tree *tree, - BUG(); - return NULL; - } -+ memset(eb, 0, sizeof(struct extent_buffer) + blocksize); - - eb->start = bytenr; - eb->len = blocksize; -diff --git a/volumes.c b/volumes.c -index 7671855..eee66a7 100644 ---- a/volumes.c -+++ b/volumes.c -@@ -862,6 +862,20 @@ void btrfs_mapping_init(struct btrfs_mapping_tree *tree) - cache_tree_init(&tree->cache_tree); - } - -+void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree) -+{ -+ struct cache_extent *cache; -+ struct rb_node *node; -+ struct map_lookup *map; -+ -+ while ((node = rb_last(&tree->cache_tree.root)) != NULL) { -+ cache = rb_entry(node, struct cache_extent, rb_node); -+ map = container_of(cache, struct map_lookup, ce); -+ remove_cache_extent(&tree->cache_tree, cache); -+ free(map); -+ } -+} -+ - int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len) - { - struct cache_extent *ce; -@@ -1340,7 +1354,7 @@ int btrfs_read_sys_array(struct btrfs_root *root) - if (!sb) - return -ENOMEM; - btrfs_set_buffer_uptodate(sb); -- write_extent_buffer(sb, super_copy, 0, BTRFS_SUPER_INFO_SIZE); -+ write_extent_buffer(sb, super_copy, 0, sizeof(*super_copy)); - array_size = btrfs_super_sys_array_size(super_copy); - - /* -diff --git a/volumes.h b/volumes.h -index bb78751..e466b31 100644 ---- a/volumes.h -+++ b/volumes.h -@@ -130,4 +130,5 @@ int btrfs_add_system_chunk(struct btrfs_trans_handle *trans, - struct btrfs_root *root, struct btrfs_key *key, - struct btrfs_chunk *chunk, int item_size); - int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset); -+void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree); - #endif diff --git a/kernel/config-arm32-generic b/kernel/config-arm32-generic index d84721f..d192250 100644 --- a/kernel/config-arm32-generic +++ b/kernel/config-arm32-generic @@ -1451,6 +1451,7 @@ CONFIG_NVMEM_VF610_OCOTP=m CONFIG_QCOM_SCM=y CONFIG_QCOM_SCM_32=y CONFIG_BCM47XX_NVRAM=y +# CONFIG_BCM47XX_SPROM is not set

# # Pseudo filesystems diff --git a/kernel/config-generic b/kernel/config-generic index a184b75..4c51645 100644 --- a/kernel/config-generic +++ b/kernel/config-generic @@ -408,6 +408,7 @@ CONFIG_PCIE_DW=y # Executable file formats / Emulations # CONFIG_BINFMT_ELF=y +CONFIG_ELFCORE=y CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y CONFIG_BINFMT_SCRIPT=y # CONFIG_HAVE_AOUT is not set @@ -4784,12 +4785,7 @@ CONFIG_XFS_RT=y # CONFIG_XFS_DEBUG is not set # CONFIG_GFS2_FS is not set # CONFIG_OCFS2_FS is not set -CONFIG_BTRFS_FS=m -CONFIG_BTRFS_FS_POSIX_ACL=y -# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set -# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set -# CONFIG_BTRFS_DEBUG is not set -# CONFIG_BTRFS_ASSERT is not set +# CONFIG_BTRFS_FS is not set # CONFIG_NILFS2_FS is not set # CONFIG_F2FS_FS is not set CONFIG_FS_POSIX_ACL=y diff --git a/kernel/kernel.nm b/kernel/kernel.nm index 254721b..adfe0a2 100644 --- a/kernel/kernel.nm +++ b/kernel/kernel.nm @@ -5,7 +5,7 @@

name = kernel version = 4.6.7 -release = 2 +release = 3 thisapp = linux-%{version}

maintainer = Arne Fitzenreiter arne.fitzenreiter@ipfire.org diff --git a/strongswan/strongswan.nm b/strongswan/strongswan.nm index 73cef82..40aa074 100644 --- a/strongswan/strongswan.nm +++ b/strongswan/strongswan.nm @@ -4,7 +4,7 @@ ###############################################################################

name = strongswan -version = 5.5.0 +version = 5.5.3 release = 1

groups = Networking/VPN

hooks/post-receive -- IPFire 3.x development tree