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check pipe() return value

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Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Juan Quintela 2010-01-20 00:56:21 +01:00 committed by Anthony Liguori
parent fb7e378cf9
commit acdc3f0c59
1 changed files with 9 additions and 4 deletions
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13
hw/xen_domainbuild.c
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@ -156,15 +156,18 @@ quit:
return; return;
} }
static void xen_domain_watcher(void) static int xen_domain_watcher(void)
{ {
int qemu_running = 1; int qemu_running = 1;
int fd[2], i, n, rc; int fd[2], i, n, rc;
char byte; char byte;
pipe(fd); if (pipe(fd) != 0) {
qemu_log("%s: Huh? pipe error: %s\n", __FUNCTION__, strerror(errno));
return -1;
}
if (fork() != 0) if (fork() != 0)
return; /* not child */ return 0; /* not child */
/* close all file handles, except stdio/out/err, /* close all file handles, except stdio/out/err,
* our watch pipe and the xen interface handle */ * our watch pipe and the xen interface handle */
@ -238,7 +241,9 @@ int xen_domain_build_pv(const char *kernel, const char *ramdisk,
} }
qemu_log("xen: created domain %d\n", xen_domid); qemu_log("xen: created domain %d\n", xen_domid);
atexit(xen_domain_cleanup); atexit(xen_domain_cleanup);
xen_domain_watcher(); if (xen_domain_watcher() == -1) {
goto err;
}
xenstore_domain_init1(kernel, ramdisk, cmdline); xenstore_domain_init1(kernel, ramdisk, cmdline);