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proc: perform a lockless check in sys_issetugid

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Discussed with:	kib
MFC after:	1 week
This commit is contained in:
Mateusz Guzik 2017-01-24 21:48:57 +00:00
parent bd60638c98
commit 543b2f425d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=312723
1 changed files with 0 additions and 2 deletions
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sys/kern/kern_prot.c
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@ -1225,9 +1225,7 @@ sys_issetugid(register struct thread *td, struct issetugid_args *uap)
* a user without an exec - programs cannot know *everything*
* that libc *might* have put in their data segment.
*/
PROC_LOCK(p);
td->td_retval[0] = (p->p_flag & P_SUGID) ? 1 : 0;
PROC_UNLOCK(p);
return (0);
}