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| author | Linus Torvalds | 2007-05-09 05:10:00 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2007-05-09 05:10:00 +0200 |
| commit | 7b82dc0e64e93f430182f36b46b79fcee87d3532 (patch) | |
| tree | 28c61be85dd899cdb096ac15c65b521b0db60ea8 /fs/open.c | |
| parent | mmc: use lock instead of claim in debug check (diff) | |
| download | kernel-qcow2-linux-7b82dc0e64e93f430182f36b46b79fcee87d3532.tar.gz kernel-qcow2-linux-7b82dc0e64e93f430182f36b46b79fcee87d3532.tar.xz kernel-qcow2-linux-7b82dc0e64e93f430182f36b46b79fcee87d3532.zip | |
Remove suid/sgid bits on [f]truncate()
.. to match what we do on write(). This way, people who write to files
by using [f]truncate + writable mmap have the same semantics as if they
were using the write() family of system calls.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/open.c')
| -rw-r--r-- | fs/open.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/open.c b/fs/open.c index ca9981c4a658..0d515d161974 100644 --- a/fs/open.c +++ b/fs/open.c @@ -210,6 +210,9 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs, newattrs.ia_valid |= ATTR_FILE; } + /* Remove suid/sgid on truncate too */ + newattrs.ia_valid |= should_remove_suid(dentry); + mutex_lock(&dentry->d_inode->i_mutex); err = notify_change(dentry, &newattrs); mutex_unlock(&dentry->d_inode->i_mutex); |