mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-17 10:26:15 +00:00
Code Issues Releases Activity

Lock the proc lock around calls to tdsignal() in the sigwait() family of

Browse Source 
syscalls.
This commit is contained in:
John Baldwin 2003-05-05 21:18:10 +00:00
parent 6711f10fb6
commit 18440c7fe7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=114755
1 changed files with 12 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
sys/kern/kern_sig.c
View File

@ -732,9 +732,11 @@ sigwait(struct thread *td, struct sigwait_args *uap)
error = copyout(&info.si_signo, uap->sig, sizeof(info.si_signo)); error = copyout(&info.si_signo, uap->sig, sizeof(info.si_signo));
/* Repost if we got an error. */ /* Repost if we got an error. */
if (error && info.si_signo) if (error && info.si_signo) {
PROC_LOCK(td->td_proc);
tdsignal(td, info.si_signo); tdsignal(td, info.si_signo);
PROC_UNLOCK(td->td_proc);
}
return (error); return (error);
} }
/* /*
@ -768,9 +770,11 @@ sigtimedwait(struct thread *td, struct sigtimedwait_args *uap)
error = copyout(&info, uap->info, sizeof(info)); error = copyout(&info, uap->info, sizeof(info));
/* Repost if we got an error. */ /* Repost if we got an error. */
if (error && info.si_signo) if (error && info.si_signo) {
PROC_LOCK(td->td_proc);
tdsignal(td, info.si_signo); tdsignal(td, info.si_signo);
PROC_UNLOCK(td->td_proc);
}
return (error); return (error);
} }
@ -794,9 +798,11 @@ sigwaitinfo(struct thread *td, struct sigwaitinfo_args *uap)
error = copyout(&info, uap->info, sizeof(info)); error = copyout(&info, uap->info, sizeof(info));
/* Repost if we got an error. */ /* Repost if we got an error. */
if (error && info.si_signo) if (error && info.si_signo) {
PROC_LOCK(td->td_proc);
tdsignal(td, info.si_signo); tdsignal(td, info.si_signo);
PROC_UNLOCK(td->td_proc);
}
return (error); return (error);
} }