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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-16 22:04:48 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-16 22:04:48 +0100 |
| commit | 78f902ccc597d6ce3e8d1477d70f2d79e960ba7a (patch) | |
| tree | c6ceab663de16501d1dda1c1596fe2dacaaef8e3 /security/selinux/hooks.c | |
| parent | 9ee670fd87b7d69c8633b94c42aadcbbcb96f28e (diff) | |
| parent | 8b1fae4e4200388b64dd88065639413cb3f1051c (diff) | |
Merge commit 'v2.6.28-rc8' into x86/doc
Diffstat (limited to 'security/selinux/hooks.c')
| -rw-r--r-- | security/selinux/hooks.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 3e3fde7c1d2..f85597a4d73 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -2126,14 +2126,16 @@ static inline void flush_unauthorized_files(struct files_struct *files) tty = get_current_tty(); if (tty) { file_list_lock(); - file = list_entry(tty->tty_files.next, typeof(*file), f_u.fu_list); - if (file) { + if (!list_empty(&tty->tty_files)) { + struct inode *inode; + /* Revalidate access to controlling tty. Use inode_has_perm on the tty inode directly rather than using file_has_perm, as this particular open file may belong to another process and we are only interested in the inode-based check here. */ - struct inode *inode = file->f_path.dentry->d_inode; + file = list_first_entry(&tty->tty_files, struct file, f_u.fu_list); + inode = file->f_path.dentry->d_inode; if (inode_has_perm(current, inode, FILE__READ | FILE__WRITE, NULL)) { drop_tty = 1; |