diff --git a/btrfs-progs-correct-uninitialized-fsid-variable.patch b/btrfs-progs-correct-uninitialized-fsid-variable.patch new file mode 100644 index 0000000..3e060a0 --- /dev/null +++ b/btrfs-progs-correct-uninitialized-fsid-variable.patch @@ -0,0 +1,55 @@ +From 6eba9002956ac40db87d42fb653a0524dc568810 Mon Sep 17 00:00:00 2001 +From: Goffredo Baroncelli +Date: Tue, 4 Sep 2012 19:59:26 +0200 +Subject: [PATCH 1/1] Correct un-initialized fsid variable + +--- + disk-io.c | 20 ++++++++++++++++---- + 1 files changed, 16 insertions(+), 4 deletions(-) + +diff --git a/disk-io.c b/disk-io.c +index b21a87f..0395205 100644 +--- a/disk-io.c ++++ b/disk-io.c +@@ -910,6 +910,7 @@ struct btrfs_root *open_ctree_fd(int fp, const char *path, u64 sb_bytenr, + int btrfs_read_dev_super(int fd, struct btrfs_super_block *sb, u64 sb_bytenr) + { + u8 fsid[BTRFS_FSID_SIZE]; ++ int fsid_is_initialized = 0; + struct btrfs_super_block buf; + int i; + int ret; +@@ -936,15 +937,26 @@ int btrfs_read_dev_super(int fd, struct btrfs_super_block *sb, u64 sb_bytenr) + if (ret < sizeof(buf)) + break; + +- if (btrfs_super_bytenr(&buf) != bytenr || +- strncmp((char *)(&buf.magic), BTRFS_MAGIC, ++ if (btrfs_super_bytenr(&buf) != bytenr ) ++ continue; ++ /* if magic is NULL, the device was removed */ ++ if (buf.magic == 0 && i == 0) ++ return -1; ++ if (strncmp((char *)(&buf.magic), BTRFS_MAGIC, + sizeof(buf.magic))) + continue; + +- if (i == 0) ++ if (!fsid_is_initialized) { + memcpy(fsid, buf.fsid, sizeof(fsid)); +- else if (memcmp(fsid, buf.fsid, sizeof(fsid))) ++ fsid_is_initialized = 1; ++ } else if (memcmp(fsid, buf.fsid, sizeof(fsid))) { ++ /* ++ * the superblocks (the original one and ++ * its backups) contain data of different ++ * filesystems -> the super cannot be trusted ++ */ + continue; ++ } + + if (btrfs_super_generation(&buf) > transid) { + memcpy(sb, &buf, sizeof(*sb)); +-- +1.7.7.6 + diff --git a/btrfs-progs.spec b/btrfs-progs.spec index 936ac20..756041a 100644 --- a/btrfs-progs.spec +++ b/btrfs-progs.spec @@ -1,6 +1,6 @@ Name: btrfs-progs Version: 0.19.20120817git043a639 -Release: 1%{?dist} +Release: 2%{?dist} Summary: Userspace programs for btrfs Group: System Environment/Base @@ -14,6 +14,7 @@ Patch3: Btrfs-progs-add-btrfs-device-ready-command.patch Patch4: Btrfs-progs-detect-if-the-disk-we-are-formatting-is-.patch Patch5: Btrfs-progs-only-enforce-a-maximum-size-if-we-specif.patch Patch6: btrfs-init-dev-list.patch +Patch7: btrfs-progs-correct-uninitialized-fsid-variable.patch BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) @@ -34,6 +35,7 @@ check, modify and correct any inconsistencies in the btrfs filesystem. %patch4 -p1 %patch5 -p1 %patch6 -p1 +%patch7 -p1 %build make CFLAGS="$RPM_OPT_FLAGS" %{?_smp_mflags} @@ -70,6 +72,10 @@ rm -rf $RPM_BUILD_ROOT %{_mandir}/man8/btrfs.8.gz %changelog +* Wed Oct 10 2012 Richard W.M. Jones 0.19.20120817git043a639-2 +- Add upstream patch to correct uninitialized fsid variable + (possible fix for RHBZ#863978). + * Fri Aug 17 2012 Josef Bacik 0.19.20120817git043a639-1 - update to latest btrfs-progs