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Merge pull request #2530 from brauner/2018-08-16/minor_fixes

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lxccontainer: minor fixes
This commit is contained in:
Stéphane Graber 2018-08-15 18:35:17 -04:00 committed by GitHub
commit 03eda56551
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1 changed files with 18 additions and 15 deletions
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25
src/lxc/lxccontainer.c
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@ -970,10 +970,15 @@ static bool do_lxcapi_start(struct lxc_container *c, int useinit, char * const a
/* We don't really care if this doesn't print all the /* We don't really care if this doesn't print all the
* characters. All that it means is that the proctitle will be * characters. All that it means is that the proctitle will be
* ugly. Similarly, we also don't care if setproctitle() fails. * ugly. Similarly, we also don't care if setproctitle() fails.
* */ */
(void)snprintf(title, sizeof(title), "[lxc monitor] %s %s", c->config_path, c->name); ret = snprintf(title, sizeof(title), "[lxc monitor] %s %s", c->config_path, c->name);
INFO("Attempting to set proc title to %s", title); if (ret > 0) {
(void)setproctitle(title); ret = setproctitle(title);
if (ret < 0)
INFO("Failed to set process title to %s", title);
else
INFO("Set process title to %s", title);
}
/* We fork() a second time to be reparented to init. Like /* We fork() a second time to be reparented to init. Like
* POSIX's daemon() function we change to "/" and redirect * POSIX's daemon() function we change to "/" and redirect
@ -1020,17 +1025,15 @@ static bool do_lxcapi_start(struct lxc_container *c, int useinit, char * const a
ret = setsid(); ret = setsid();
if (ret < 0) if (ret < 0)
TRACE("Process %d is already process group leader", lxc_raw_getpid()); TRACE("Process %d is already process group leader", lxc_raw_getpid());
} else { } else if (!am_single_threaded()) {
if (!am_single_threaded()) {
ERROR("Cannot start non-daemonized container when threaded"); ERROR("Cannot start non-daemonized container when threaded");
free_init_cmd(init_cmd); free_init_cmd(init_cmd);
lxc_free_handler(handler); lxc_free_handler(handler);
return false; return false;
} }
}
/* We need to write PID file after daemonize, so we always /* We need to write PID file after daemonize, so we always write the
* write the right PID. * right PID.
*/ */
if (c->pidfile) { if (c->pidfile) {
int ret, w; int ret, w;
@ -1054,7 +1057,7 @@ static bool do_lxcapi_start(struct lxc_container *c, int useinit, char * const a
free_init_cmd(init_cmd); free_init_cmd(init_cmd);
lxc_free_handler(handler); lxc_free_handler(handler);
SYSERROR("Failed to write '%s'", c->pidfile); SYSERROR("Failed to write monitor pid to \"%s\"", c->pidfile);
if (c->daemonize) if (c->daemonize)
_exit(EXIT_FAILURE); _exit(EXIT_FAILURE);
@ -1069,7 +1072,7 @@ static bool do_lxcapi_start(struct lxc_container *c, int useinit, char * const a
if (conf->monitor_unshare) { if (conf->monitor_unshare) {
ret = unshare(CLONE_NEWNS); ret = unshare(CLONE_NEWNS);
if (ret < 0) { if (ret < 0) {
SYSERROR("failed to unshare mount namespace"); SYSERROR("Failed to unshare mount namespace");
lxc_free_handler(handler); lxc_free_handler(handler);
ret = 1; ret = 1;
goto on_error; goto on_error;