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| author | James Morris <jmorris@namei.org> | 2008-12-25 11:40:09 +1100 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2008-12-25 11:40:09 +1100 |
| commit | cbacc2c7f066a1e01b33b0e27ae5efbf534bc2db (patch) | |
| tree | 90d1093131d2a3543a8b3b1f3364e7c6f4081a93 /fs/fcntl.c | |
| parent | 4a6908a3a050aacc9c3a2f36b276b46c0629ad91 (diff) | |
| parent | 74192246910ff4fb95309ba1a683215644beeb62 (diff) | |
| download | lwn-cbacc2c7f066a1e01b33b0e27ae5efbf534bc2db.tar.gz lwn-cbacc2c7f066a1e01b33b0e27ae5efbf534bc2db.zip | |
Merge branch 'next' into for-linus
Diffstat (limited to 'fs/fcntl.c')
| -rw-r--r-- | fs/fcntl.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c index 549daf8005fb..cdc141946724 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -212,13 +212,14 @@ static void f_modown(struct file *filp, struct pid *pid, enum pid_type type, int __f_setown(struct file *filp, struct pid *pid, enum pid_type type, int force) { + const struct cred *cred = current_cred(); int err; err = security_file_set_fowner(filp); if (err) return err; - f_modown(filp, pid, type, current->uid, current->euid, force); + f_modown(filp, pid, type, cred->uid, cred->euid, force); return 0; } EXPORT_SYMBOL(__f_setown); @@ -407,10 +408,17 @@ static const long band_table[NSIGPOLL] = { static inline int sigio_perm(struct task_struct *p, struct fown_struct *fown, int sig) { - return (((fown->euid == 0) || - (fown->euid == p->suid) || (fown->euid == p->uid) || - (fown->uid == p->suid) || (fown->uid == p->uid)) && - !security_file_send_sigiotask(p, fown, sig)); + const struct cred *cred; + int ret; + + rcu_read_lock(); + cred = __task_cred(p); + ret = ((fown->euid == 0 || + fown->euid == cred->suid || fown->euid == cred->uid || + fown->uid == cred->suid || fown->uid == cred->uid) && + !security_file_send_sigiotask(p, fown, sig)); + rcu_read_unlock(); + return ret; } static void send_sigio_to_task(struct task_struct *p, |