btrfsprogs: upgrade to latest git
this incorporates all patches we already used and makes btrfs-send work with kernel 3.9+
This commit is contained in:
parent
c7b3fbddf0
commit
7761952d06
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@ -1,146 +0,0 @@
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diff --git a/cmds-receive.c b/cmds-receive.c
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index a8be6fa..6b7cf12 100644
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--- a/cmds-receive.c
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+++ b/cmds-receive.c
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@@ -52,11 +52,13 @@ static int g_verbose = 0;
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struct btrfs_receive
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{
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int mnt_fd;
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+ int dest_dir_fd;
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int write_fd;
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char *write_path;
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char *root_path;
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+ char *dest_dir_path; /* relative to root_path */
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char *full_subvol_path;
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struct subvol_info *cur_subvol;
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@@ -150,8 +152,11 @@ static int process_subvol(const char *path, const u8 *uuid, u64 ctransid,
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r->cur_subvol = calloc(1, sizeof(*r->cur_subvol));
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r->parent_subvol = NULL;
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- r->cur_subvol->path = strdup(path);
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- r->full_subvol_path = path_cat(r->root_path, path);
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+ if (strlen(r->dest_dir_path) == 0)
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+ r->cur_subvol->path = strdup(path);
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+ else
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+ r->cur_subvol->path = path_cat(r->dest_dir_path, path);
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+ r->full_subvol_path = path_cat3(r->root_path, r->dest_dir_path, path);
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fprintf(stderr, "At subvol %s\n", path);
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@@ -167,7 +172,7 @@ static int process_subvol(const char *path, const u8 *uuid, u64 ctransid,
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memset(&args_v1, 0, sizeof(args_v1));
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strcpy(args_v1.name, path);
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- ret = ioctl(r->mnt_fd, BTRFS_IOC_SUBVOL_CREATE, &args_v1);
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+ ret = ioctl(r->dest_dir_fd, BTRFS_IOC_SUBVOL_CREATE, &args_v1);
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if (ret < 0) {
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ret = -errno;
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fprintf(stderr, "ERROR: creating subvolume %s failed. "
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@@ -195,8 +200,11 @@ static int process_snapshot(const char *path, const u8 *uuid, u64 ctransid,
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r->cur_subvol = calloc(1, sizeof(*r->cur_subvol));
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r->parent_subvol = NULL;
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- r->cur_subvol->path = strdup(path);
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- r->full_subvol_path = path_cat(r->root_path, path);
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+ if (strlen(r->dest_dir_path) == 0)
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+ r->cur_subvol->path = strdup(path);
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+ else
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+ r->cur_subvol->path = path_cat(r->dest_dir_path, path);
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+ r->full_subvol_path = path_cat3(r->root_path, r->dest_dir_path, path);
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fprintf(stderr, "At snapshot %s\n", path);
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@@ -243,7 +251,7 @@ static int process_snapshot(const char *path, const u8 *uuid, u64 ctransid,
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goto out;
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}
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- ret = ioctl(r->mnt_fd, BTRFS_IOC_SNAP_CREATE_V2, &args_v2);
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+ ret = ioctl(r->dest_dir_fd, BTRFS_IOC_SNAP_CREATE_V2, &args_v2);
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close(args_v2.fd);
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if (ret < 0) {
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ret = -errno;
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@@ -790,17 +798,48 @@ struct btrfs_send_ops send_ops = {
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int do_receive(struct btrfs_receive *r, const char *tomnt, int r_fd)
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{
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int ret;
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+ char *dest_dir_full_path;
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int end = 0;
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- r->root_path = strdup(tomnt);
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- r->mnt_fd = open(tomnt, O_RDONLY | O_NOATIME);
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+ dest_dir_full_path = realpath(tomnt, NULL);
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+ if (!dest_dir_full_path) {
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+ ret = -errno;
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+ fprintf(stderr, "ERROR: realpath(%s) failed. %s\n", tomnt,
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+ strerror(-ret));
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+ goto out;
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+ }
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+ r->dest_dir_fd = open(dest_dir_full_path, O_RDONLY | O_NOATIME);
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+ if (r->dest_dir_fd < 0) {
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+ ret = -errno;
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+ fprintf(stderr, "ERROR: failed to open destination directory %s. %s\n",
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+ dest_dir_full_path, strerror(-ret));
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+ goto out;
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+ }
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+
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+ ret = find_mount_root(dest_dir_full_path, &r->root_path);
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+ if (ret < 0) {
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+ ret = -EINVAL;
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+ fprintf(stderr, "ERROR: failed to determine mount point "
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+ "for %s\n", dest_dir_full_path);
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+ goto out;
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+ }
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+ r->mnt_fd = open(r->root_path, O_RDONLY | O_NOATIME);
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if (r->mnt_fd < 0) {
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ret = -errno;
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- fprintf(stderr, "ERROR: failed to open %s. %s\n", tomnt,
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+ fprintf(stderr, "ERROR: failed to open %s. %s\n", r->root_path,
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strerror(-ret));
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goto out;
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}
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+ /*
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+ * find_mount_root returns a root_path that is a subpath of
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+ * dest_dir_full_path. Now get the other part of root_path,
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+ * which is the destination dir relative to root_path.
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+ */
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+ r->dest_dir_path = dest_dir_full_path + strlen(r->root_path);
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+ if (r->dest_dir_path[0] == '/')
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+ r->dest_dir_path++;
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+
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ret = subvol_uuid_search_init(r->mnt_fd, &r->sus);
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if (ret < 0)
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return ret;
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diff --git a/cmds-send.c b/cmds-send.c
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index 9b47e70..c408bc7 100644
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--- a/cmds-send.c
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+++ b/cmds-send.c
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@@ -81,6 +81,14 @@ int find_mount_root(const char *path, char **mount_root)
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}
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}
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+ if (!longest_match) {
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+ fprintf(stderr, "ERROR: Failed to find mount root for path %s.\n",
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+ path);
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+ fprintf(stderr, "Please make sure that you have a valid \
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+ /etc/mtab file.\n");
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+ return -ENOENT;
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+ }
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+
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*mount_root = realpath(longest_match, NULL);
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free(longest_match);
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diff --git a/send-utils.h b/send-utils.h
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index da407eb..a3e038b 100644
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--- a/send-utils.h
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+++ b/send-utils.h
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@@ -65,5 +65,6 @@ void subvol_uuid_search_add(struct subvol_uuid_search *s,
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char *path_cat(const char *p1, const char *p2);
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char *path_cat3(const char *p1, const char *p2, const char *p3);
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+int find_mount_root(const char *path, char **mount_root);
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#endif /* SEND_UTILS_H_ */
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@ -1,13 +0,0 @@
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diff --git a/cmds-receive.c b/cmds-receive.c
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index a8be6fa..c182175 100644
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--- a/cmds-receive.c
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+++ b/cmds-receive.c
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@@ -880,7 +880,7 @@ static const char * const receive_cmd_group_usage[] = {
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};
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static const char * const cmd_receive_usage[] = {
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- "btrfs receive [-v] [-i <infile>] <mount>",
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+ "btrfs receive [-v] [-f <infile>] <mount>",
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"Receive subvolumes from stdin.",
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"Receives one or more subvolumes that were previously ",
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"sent with btrfs send. The received subvolumes are stored",
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@ -1,12 +0,0 @@
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diff --git a/cmds-receive.c b/cmds-receive.c
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index 6b7cf12..a6a6a5b 100644
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--- a/cmds-receive.c
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+++ b/cmds-receive.c
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@@ -731,7 +731,7 @@ static int process_chown(const char *path, u64 uid, u64 gid, void *user)
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fprintf(stderr, "chown %s - uid=%llu, gid=%llu\n", path,
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uid, gid);
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- ret = chown(full_path, uid, gid);
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+ ret = lchown(full_path, uid, gid);
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if (ret < 0) {
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ret = -errno;
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@ -1,31 +1,26 @@
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{ stdenv, fetchgit, zlib, libuuid, acl, attr, e2fsprogs }:
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{ stdenv, fetchgit, zlib, libuuid, acl, attr, e2fsprogs, lzo }:
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let version = "0.20pre20121005"; in
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let version = "0.20pre20130509"; in
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stdenv.mkDerivation {
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name = "btrfs-progs-${version}";
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src = fetchgit {
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url = "git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git";
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rev = "91d9eec1ff044394f2b98ee7fcb76713dd33b994";
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sha256 = "72d4cd4fb23d876a17146d6231ad40a2151fa47c648485c54cf7478239b43764";
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rev = "650e656a8b9c1fbe4ec5cd8c48ae285b8abd3b69";
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sha256 = "e50e8ce9d24505711ed855f69a73d639dc5e401692a7d1c300753de3472abb21";
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};
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patches = [
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./subvol-listing.patch
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./btrfs-receive-help-text.patch
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./btrfs-progs-Fix-the-receive-code-pathing.patch
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./btrfs-receive-lchown.patch
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];
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buildInputs = [ zlib libuuid acl attr e2fsprogs ];
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buildInputs = [ zlib libuuid acl attr e2fsprogs lzo ];
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postPatch = ''
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cp ${./btrfs-set-received-uuid.c} btrfs-set-received-uuid.c
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'';
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postBuild = ''
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gcc -O2 -luuid -o btrfs-set-received-uuid send-utils.o rbtree.o btrfs-list.o btrfs-set-received-uuid.c
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gcc -Wall -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -DBTRFS_FLAT_INCLUDES \
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-fPIC -g -O1 -luuid -o btrfs-set-received-uuid rbtree.o send-utils.o btrfs-list.o \
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btrfs-set-received-uuid.c
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'';
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postInstall = ''
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@ -1,34 +0,0 @@
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--- a/btrfs-list.c 2012-12-30 12:20:01.394137593 +0100
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+++ b/btrfs-list.c 2012-12-30 12:22:47.242452906 +0100
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@@ -1004,6 +1004,23 @@
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return 0;
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}
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+static void __drop_deleting_roots(struct root_lookup *root_lookup)
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+{
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+ struct rb_node *n;
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+
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+again:
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+ n = rb_first(&root_lookup->root);
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+ while (n) {
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+ struct root_info *entry = rb_entry(n, struct root_info, rb_node);
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+ if (!entry->ref_tree) {
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+ rb_erase(n, &root_lookup->root);
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+ free(entry);
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+ goto again;
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+ }
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+ n = rb_next(n);
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+ }
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+}
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+
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static int __list_subvol_search(int fd, struct root_lookup *root_lookup)
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{
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int ret;
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@@ -1123,6 +1140,8 @@
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break;
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}
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+ __drop_deleting_roots(root_lookup);
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+
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return 0;
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}
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