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security: make security_file_set_fowner, f_setown and __f_setown void return

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security_file_set_fowner always returns 0, so make it f_setown and
__f_setown void return functions and fix up the error handling in the
callers.

Cc: [email protected]
Signed-off-by: Jeff Layton <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
This commit is contained in:
Jeff Layton 2014-08-22 11:27:32 -04:00
commit e0b93eddfe
12 changed files with 26 additions and 42 deletions
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21
fs/fcntl.c
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@ -98,26 +98,19 @@ static void f_modown(struct file *filp, struct pid *pid, enum pid_type type,
write_unlock_irq(&filp->f_owner.lock);
}
int __f_setown(struct file *filp, struct pid *pid, enum pid_type type,
void __f_setown(struct file *filp, struct pid *pid, enum pid_type type,
int force)
{
int err;
err = security_file_set_fowner(filp);
if (err)
return err;
security_file_set_fowner(filp);
f_modown(filp, pid, type, force);
return 0;
}
EXPORT_SYMBOL(__f_setown);
int f_setown(struct file *filp, unsigned long arg, int force)
void f_setown(struct file *filp, unsigned long arg, int force)
{
enum pid_type type;
struct pid *pid;
int who = arg;
int result;
type = PIDTYPE_PID;
if (who < 0) {
type = PIDTYPE_PGID;
@ -125,9 +118,8 @@ int f_setown(struct file *filp, unsigned long arg, int force)
}
rcu_read_lock();
pid = find_vpid(who);
result = __f_setown(filp, pid, type, force);
__f_setown(filp, pid, type, force);
rcu_read_unlock();
return result;
}
EXPORT_SYMBOL(f_setown);
@ -181,7 +173,7 @@ static int f_setown_ex(struct file *filp, unsigned long arg)
if (owner.pid && !pid)
ret = -ESRCH;
else
ret = __f_setown(filp, pid, type, 1);
__f_setown(filp, pid, type, 1);
rcu_read_unlock();
return ret;
@ -302,7 +294,8 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg,
force_successful_syscall_return();
break;
case F_SETOWN:
err = f_setown(filp, arg, 1);
f_setown(filp, arg, 1);
err = 0;
break;
case F_GETOWN_EX:
err = f_getown_ex(filp, arg);