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Use O_CLOEXEC and save a syscall.

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Reviewed by: riastradh
This commit is contained in:
sjg 2020-07-10 15:53:30 +00:00
parent 21d5709c91
commit 07bbd59e21
1 changed files with 2 additions and 3 deletions
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5
usr.bin/make/filemon/filemon_dev.c
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@ -1,4 +1,4 @@
/* $NetBSD: filemon_dev.c,v 1.2 2020/07/10 00:42:53 sjg Exp $ */
/* $NetBSD: filemon_dev.c,v 1.3 2020/07/10 15:53:30 sjg Exp $ */
/*-
* Copyright (c) 2020 The NetBSD Foundation, Inc.
@ -70,13 +70,12 @@ filemon_open(void)
return NULL;
/* Try opening /dev/filemon, up to six times (cargo cult!). */
for (i = 0; (F->fd = open(_PATH_FILEMON, O_RDWR)) == -1; i++) {
for (i = 0; (F->fd = open(_PATH_FILEMON, O_RDWR|O_CLOEXEC)) == -1; i++) {
if (i == 5) {
error = errno;
goto fail0;
}
}
(void)fcntl(F->fd, F_SETFD, FD_CLOEXEC);
/* Success! */
return F;