Check if other Monitor instance running before fork.
Make error message visible to the user. Signed-off-by: Blazej Kucman <blazej.kucman@intel.com> Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com> Signed-off-by: Jes Sorensen <jsorensen@fb.com>
This commit is contained in:
parent
cab9c67d46
commit
7f3b2d1d16
44
Monitor.c
44
Monitor.c
|
@ -63,6 +63,7 @@ struct alert_info {
|
||||||
};
|
};
|
||||||
static int make_daemon(char *pidfile);
|
static int make_daemon(char *pidfile);
|
||||||
static int check_one_sharer(int scan);
|
static int check_one_sharer(int scan);
|
||||||
|
static void write_autorebuild_pid(void);
|
||||||
static void alert(char *event, char *dev, char *disc, struct alert_info *info);
|
static void alert(char *event, char *dev, char *disc, struct alert_info *info);
|
||||||
static int check_array(struct state *st, struct mdstat_ent *mdstat,
|
static int check_array(struct state *st, struct mdstat_ent *mdstat,
|
||||||
int test, struct alert_info *info,
|
int test, struct alert_info *info,
|
||||||
|
@ -153,6 +154,11 @@ int Monitor(struct mddev_dev *devlist,
|
||||||
info.mailfrom = mailfrom;
|
info.mailfrom = mailfrom;
|
||||||
info.dosyslog = dosyslog;
|
info.dosyslog = dosyslog;
|
||||||
|
|
||||||
|
if (share){
|
||||||
|
if (check_one_sharer(c->scan))
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
if (daemonise) {
|
if (daemonise) {
|
||||||
int rv = make_daemon(pidfile);
|
int rv = make_daemon(pidfile);
|
||||||
if (rv >= 0)
|
if (rv >= 0)
|
||||||
|
@ -160,8 +166,7 @@ int Monitor(struct mddev_dev *devlist,
|
||||||
}
|
}
|
||||||
|
|
||||||
if (share)
|
if (share)
|
||||||
if (check_one_sharer(c->scan))
|
write_autorebuild_pid();
|
||||||
return 1;
|
|
||||||
|
|
||||||
if (devlist == NULL) {
|
if (devlist == NULL) {
|
||||||
mdlist = conf_get_ident(NULL);
|
mdlist = conf_get_ident(NULL);
|
||||||
|
@ -328,8 +333,8 @@ static int check_one_sharer(int scan)
|
||||||
int pid;
|
int pid;
|
||||||
FILE *comm_fp;
|
FILE *comm_fp;
|
||||||
FILE *fp;
|
FILE *fp;
|
||||||
char comm_path[100];
|
char comm_path[PATH_MAX];
|
||||||
char path[100];
|
char path[PATH_MAX];
|
||||||
char comm[20];
|
char comm[20];
|
||||||
|
|
||||||
sprintf(path, "%s/autorebuild.pid", MDMON_DIR);
|
sprintf(path, "%s/autorebuild.pid", MDMON_DIR);
|
||||||
|
@ -356,21 +361,28 @@ static int check_one_sharer(int scan)
|
||||||
}
|
}
|
||||||
fclose(fp);
|
fclose(fp);
|
||||||
}
|
}
|
||||||
if (scan) {
|
return 0;
|
||||||
if (mkdir(MDMON_DIR, S_IRWXU) < 0 && errno != EEXIST) {
|
}
|
||||||
|
|
||||||
|
static void write_autorebuild_pid()
|
||||||
|
{
|
||||||
|
char path[PATH_MAX];
|
||||||
|
int pid;
|
||||||
|
FILE *fp;
|
||||||
|
sprintf(path, "%s/autorebuild.pid", MDMON_DIR);
|
||||||
|
|
||||||
|
if (mkdir(MDMON_DIR, S_IRWXU) < 0 && errno != EEXIST) {
|
||||||
|
pr_err("Can't create autorebuild.pid file\n");
|
||||||
|
} else {
|
||||||
|
fp = fopen(path, "w");
|
||||||
|
if (!fp)
|
||||||
pr_err("Can't create autorebuild.pid file\n");
|
pr_err("Can't create autorebuild.pid file\n");
|
||||||
} else {
|
else {
|
||||||
fp = fopen(path, "w");
|
pid = getpid();
|
||||||
if (!fp)
|
fprintf(fp, "%d\n", pid);
|
||||||
pr_err("Cannot create autorebuild.pidfile\n");
|
fclose(fp);
|
||||||
else {
|
|
||||||
pid = getpid();
|
|
||||||
fprintf(fp, "%d\n", pid);
|
|
||||||
fclose(fp);
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static void alert(char *event, char *dev, char *disc, struct alert_info *info)
|
static void alert(char *event, char *dev, char *disc, struct alert_info *info)
|
||||||
|
|
Loading…
Reference in New Issue