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util: Make sure open successed

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Opening /dev/null may fail, check for ret code.

CID 1168167

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Cyrill Gorcunov
2014-04-09 14:46:13 +04:00
committed by Pavel Emelyanov
parent 708abf40b8
commit 6df067c50a
1 changed files with 4 additions and 0 deletions
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4
util.c
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@@ -597,6 +597,10 @@ int cr_daemon(int nochdir, int noclose)
int fd; int fd;
fd = open("/dev/null", O_RDWR); fd = open("/dev/null", O_RDWR);
if (fd < 0) {
pr_perror("Can't open /dev/null");
return -1;
}
dup2(fd, 0); dup2(fd, 0);
dup2(fd, 1); dup2(fd, 1);
dup2(fd, 2); dup2(fd, 2);