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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

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Pull fuse fix from Miklos Szeredi:
 "Fix a regression spotted by Jeff Layton"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: fix clearing suid, sgid for chown()
This commit is contained in:
Linus Torvalds 2016-12-07 08:45:23 -08:00
commit ce779d6b5b
1 changed files with 2 additions and 5 deletions
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7
fs/fuse/dir.c
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@ -1739,8 +1739,6 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
* This should be done on write(), truncate() and chown().
*/
if (!fc->handle_killpriv) {
int kill;
/*
* ia_mode calculation may have used stale i_mode.
* Refresh and recalculate.
@ -1750,12 +1748,11 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
return ret;
attr->ia_mode = inode->i_mode;
kill = should_remove_suid(entry);
if (kill & ATTR_KILL_SUID) {
if (inode->i_mode & S_ISUID) {
attr->ia_valid |= ATTR_MODE;
attr->ia_mode &= ~S_ISUID;
}
if (kill & ATTR_KILL_SGID) {
if ((inode->i_mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) {
attr->ia_valid |= ATTR_MODE;
attr->ia_mode &= ~S_ISGID;
}