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Add support for /run/initctl

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Newer versions of Debian use '/run/initctl' instead of '/dev/initctl'.
This patch updates the code to search for the FIFO from a list of
well-known locations.
This commit is contained in:
Rick Harris 2014-10-22 13:09:49 +01:00 committed by Daniel P. Berrange
parent 966d07b935
commit 7e037f64c0
1 changed files with 24 additions and 14 deletions
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38
src/util/virinitctl.c
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@ -46,12 +46,6 @@
* Copyright (C) 1995-2004 Miquel van Smoorenburg
*/
# if defined(__FreeBSD_kernel__)
# define VIR_INITCTL_FIFO "/etc/.initctl"
# else
# define VIR_INITCTL_FIFO "/dev/initctl"
# endif
# define VIR_INITCTL_MAGIC 0x03091969
# define VIR_INITCTL_CMD_START 0
# define VIR_INITCTL_CMD_RUNLVL 1
@ -124,6 +118,13 @@ virInitctlSetRunLevel(virInitctlRunLevel level)
struct virInitctlRequest req;
int fd = -1;
int ret = -1;
const char *initctl_fifo = NULL;
size_t i = 0;
const char *initctl_fifos[] = {
"/run/initctl",
"/dev/initctl",
"/etc/.initctl",
};
memset(&req, 0, sizeof(req));
@ -133,22 +134,31 @@ virInitctlSetRunLevel(virInitctlRunLevel level)
/* Yes it is an 'int' field, but wants a numeric character. Go figure */
req.runlevel = '0' + level;
if ((fd = open(VIR_INITCTL_FIFO,
O_WRONLY|O_NONBLOCK|O_CLOEXEC|O_NOCTTY)) < 0) {
if (errno == ENOENT) {
ret = 0;
for (i = 0; i < ARRAY_CARDINALITY(initctl_fifos); i++) {
initctl_fifo = initctl_fifos[i];
if ((fd = open(initctl_fifo,
O_WRONLY|O_NONBLOCK|O_CLOEXEC|O_NOCTTY)) >= 0)
break;
if (errno != ENOENT) {
virReportSystemError(errno,
_("Cannot open init control %s"),
initctl_fifo);
goto cleanup;
}
virReportSystemError(errno,
_("Cannot open init control %s"),
VIR_INITCTL_FIFO);
}
/* Ensure we found a valid initctl fifo */
if (fd < 0) {
ret = 0;
goto cleanup;
}
if (safewrite(fd, &req, sizeof(req)) != sizeof(req)) {
virReportSystemError(errno,
_("Failed to send request to init control %s"),
VIR_INITCTL_FIFO);
initctl_fifo);
goto cleanup;
}