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authorTejun Heo <htejun@gmail.com>2008-01-15 22:10:53 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-01-16 12:54:03 -0500
commit456ef1553cb2b06729d64c1d1f0f2bda34e9b201 (patch)
tree4ad211cbaff6056d9f1c9aded2d24e83b1641c31 /fs/sysfs
parente49452c67703d3647467d65275fb893589384fed (diff)
sysfs: fix bugs in sysfs_rename/move_dir()
sysfs_rename/move_dir() have the following bugs. - On dentry lookup failure, kfree() is called on ERR_PTR() value. - sysfs_move_dir() has an extra dput() on success path. Fix them. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/sysfs')
-rw-r--r--fs/sysfs/dir.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index b197016bbfbe..f281cc6584b0 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -783,6 +783,7 @@ int sysfs_rename_dir(struct kobject * kobj, const char *new_name)
783 old_dentry = sysfs_get_dentry(sd); 783 old_dentry = sysfs_get_dentry(sd);
784 if (IS_ERR(old_dentry)) { 784 if (IS_ERR(old_dentry)) {
785 error = PTR_ERR(old_dentry); 785 error = PTR_ERR(old_dentry);
786 old_dentry = NULL;
786 goto out; 787 goto out;
787 } 788 }
788 789
@@ -850,6 +851,7 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj)
850 old_dentry = sysfs_get_dentry(sd); 851 old_dentry = sysfs_get_dentry(sd);
851 if (IS_ERR(old_dentry)) { 852 if (IS_ERR(old_dentry)) {
852 error = PTR_ERR(old_dentry); 853 error = PTR_ERR(old_dentry);
854 old_dentry = NULL;
853 goto out; 855 goto out;
854 } 856 }
855 old_parent = old_dentry->d_parent; 857 old_parent = old_dentry->d_parent;
@@ -857,6 +859,7 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj)
857 new_parent = sysfs_get_dentry(new_parent_sd); 859 new_parent = sysfs_get_dentry(new_parent_sd);
858 if (IS_ERR(new_parent)) { 860 if (IS_ERR(new_parent)) {
859 error = PTR_ERR(new_parent); 861 error = PTR_ERR(new_parent);
862 new_parent = NULL;
860 goto out; 863 goto out;
861 } 864 }
862 865
@@ -880,7 +883,6 @@ again:
880 error = 0; 883 error = 0;
881 d_add(new_dentry, NULL); 884 d_add(new_dentry, NULL);
882 d_move(old_dentry, new_dentry); 885 d_move(old_dentry, new_dentry);
883 dput(new_dentry);
884 886
885 /* Remove from old parent's list and insert into new parent's list. */ 887 /* Remove from old parent's list and insert into new parent's list. */
886 sysfs_unlink_sibling(sd); 888 sysfs_unlink_sibling(sd);