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authorguenther <guenther@openbsd.org>2009-10-21 16:04:23 +0000
committerguenther <guenther@openbsd.org>2009-10-21 16:04:23 +0000
commit9962e7fd037872c423544f61cba1c901b045363a (patch)
treece799ea09983ba455c4a97b46913cf18ffa2a841 /lib/libc/gen/getgrent.c
parent"usage:" is lowercase; spacing. (diff)
downloadwireguard-openbsd-9962e7fd037872c423544f61cba1c901b045363a.tar.xz
wireguard-openbsd-9962e7fd037872c423544f61cba1c901b045363a.zip
Fix the handle locking in stdio to use flockfile/funlockfile
internally when and where required. Macros in <stdio.h> are updated to automatically call the underlying functions when the process is threaded to obtain the necessary locking. A private mutex is added to protect __sglue, the internal list of FILE handles, and another to protect the one-time initialization. Some routines in libc that use getc() change to use getc_unlocked() as they're either protected by their own lock or aren't thread-safe routines anyway. ok kurt@, earlier version tested by sthen@ and jj@
Diffstat (limited to 'lib/libc/gen/getgrent.c')
-rw-r--r--lib/libc/gen/getgrent.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/libc/gen/getgrent.c b/lib/libc/gen/getgrent.c
index d64b04cde1d..13ca99b8fc4 100644
--- a/lib/libc/gen/getgrent.c
+++ b/lib/libc/gen/getgrent.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: getgrent.c,v 1.32 2009/06/07 03:52:54 schwarze Exp $ */
+/* $OpenBSD: getgrent.c,v 1.33 2009/10/21 16:04:23 guenther Exp $ */
/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
@@ -319,7 +319,8 @@ grscan(int search, gid_t gid, const char *name, struct group *p_gr,
if (!strchr(line, '\n')) {
int ch;
- while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
+ while ((ch = getc_unlocked(_gr_fp)) != '\n' &&
+ ch != EOF)
;
continue;
}