Commit 7b82dc0e authored by Linus Torvalds's avatar Linus Torvalds

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: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 1efd48b3
......@@ -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);
......
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