diff options
| author | Christoph Hellwig <hch@infradead.org> | 2008-08-13 16:04:05 +1000 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-08-13 16:04:05 +1000 |
| commit | a738159df2b97398f960978272944cbdd8f726ef (patch) | |
| tree | 20959d5f1d941dd7c755bf9bc8141f20f97249dd /fs | |
| parent | 5e9da7b7a1edfc75a839b0269935393fa347f38b (diff) | |
[XFS] don't leak m_fsname/m_rtname/m_logname
Add a helper to free the m_fsname/m_rtname/m_logname allocations and use
it properly for all mount failure cases. Also switch the allocations for
these to kstrdup while we're at it.
SGI-PV: 981498
SGI-Modid: xfs-linux-melb:xfs-kern:31728a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_super.c | 51 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.c | 7 |
2 files changed, 41 insertions, 17 deletions
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index c9ec44a02e2..27758409fc8 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -1201,6 +1201,15 @@ xfssyncd( } STATIC void +xfs_free_fsname( + struct xfs_mount *mp) +{ + kfree(mp->m_fsname); + kfree(mp->m_rtname); + kfree(mp->m_logname); +} + +STATIC void xfs_fs_put_super( struct super_block *sb) { @@ -1261,6 +1270,7 @@ xfs_fs_put_super( xfs_close_devices(mp); xfs_qmops_put(mp); xfs_dmops_put(mp); + xfs_free_fsname(mp); kfree(mp); } @@ -1517,6 +1527,8 @@ xfs_start_flags( struct xfs_mount_args *ap, struct xfs_mount *mp) { + int error; + /* Values are in BBs */ if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { /* @@ -1549,17 +1561,27 @@ xfs_start_flags( ap->logbufsize); return XFS_ERROR(EINVAL); } + + error = ENOMEM; + mp->m_logbsize = ap->logbufsize; mp->m_fsname_len = strlen(ap->fsname) + 1; - mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP); - strcpy(mp->m_fsname, ap->fsname); + + mp->m_fsname = kstrdup(ap->fsname, GFP_KERNEL); + if (!mp->m_fsname) + goto out; + if (ap->rtname[0]) { - mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP); - strcpy(mp->m_rtname, ap->rtname); + mp->m_rtname = kstrdup(ap->rtname, GFP_KERNEL); + if (!mp->m_rtname) + goto out_free_fsname; + } + if (ap->logname[0]) { - mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP); - strcpy(mp->m_logname, ap->logname); + mp->m_logname = kstrdup(ap->logname, GFP_KERNEL); + if (!mp->m_logname) + goto out_free_rtname; } if (ap->flags & XFSMNT_WSYNC) @@ -1632,6 +1654,14 @@ xfs_start_flags( if (ap->flags & XFSMNT_DMAPI) mp->m_flags |= XFS_MOUNT_DMAPI; return 0; + + + out_free_rtname: + kfree(mp->m_rtname); + out_free_fsname: + kfree(mp->m_fsname); + out: + return error; } /* @@ -1792,10 +1822,10 @@ xfs_fs_fill_super( */ error = xfs_start_flags(args, mp); if (error) - goto out_destroy_counters; + goto out_free_fsname; error = xfs_readsb(mp, flags); if (error) - goto out_destroy_counters; + goto out_free_fsname; error = xfs_finish_flags(args, mp); if (error) goto out_free_sb; @@ -1857,7 +1887,8 @@ xfs_fs_fill_super( xfs_filestream_unmount(mp); out_free_sb: xfs_freesb(mp); - out_destroy_counters: + out_free_fsname: + xfs_free_fsname(mp); xfs_icsb_destroy_counters(mp); xfs_close_devices(mp); out_put_qmops: @@ -1893,7 +1924,7 @@ xfs_fs_fill_super( IRELE(mp->m_rootip); xfs_unmountfs(mp); - goto out_destroy_counters; + goto out_free_fsname; } STATIC int diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 6c5d1325e7f..31699b19bb3 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -146,13 +146,6 @@ xfs_mount_free( mutex_destroy(&mp->m_growlock); if (mp->m_quotainfo) XFS_QM_DONE(mp); - - if (mp->m_fsname != NULL) - kmem_free(mp->m_fsname); - if (mp->m_rtname != NULL) - kmem_free(mp->m_rtname); - if (mp->m_logname != NULL) - kmem_free(mp->m_logname); } /* |