syslog support for monitor mode

[thirdparty/mdadm.git] / Monitor.c

diff --git a/Monitor.c b/Monitor.c
index 2b30df1dc648840932112c8ac652840b5a7ebb1f..1ad57bebc03dab3a3796406c4784a9f185f07452 100644 (file)
--- a/Monitor.c
+++ b/Monitor.c
@@ -33,8 +33,10 @@
 #include       <sys/wait.h>
 #include       <sys/signal.h>
 #include       <values.h>
+#include       <syslog.h>
 
-static void alert(char *event, char *dev, char *disc, char *mailaddr, char *cmd);
+static void alert(char *event, char *dev, char *disc, char *mailaddr, char *cmd,
+                 int dosyslog);
 
 static char *percentalerts[] = { 
        "RebuildStarted",
@@ -47,7 +49,7 @@ static char *percentalerts[] = {
 int Monitor(mddev_dev_t devlist,
            char *mailaddr, char *alert_cmd,
            int period, int daemonise, int scan, int oneshot,
-           char *config, int test, char* pidfile)
+           int dosyslog, char *config, int test, char* pidfile)
 {
        /*
         * Every few seconds, scan every md device looking for changes
@@ -212,12 +214,12 @@ int Monitor(mddev_dev_t devlist,
                        unsigned int i;
 
                        if (test)
-                               alert("TestMessage", dev, NULL, mailaddr, alert_cmd);
+                               alert("TestMessage", dev, NULL, mailaddr, alert_cmd, dosyslog);
                        fd = open(dev, O_RDONLY);
                        if (fd < 0) {
                                if (!st->err)
                                        alert("DeviceDisappeared", dev, NULL,
-                                             mailaddr, alert_cmd);
+                                             mailaddr, alert_cmd, dosyslog);
 /*                                     fprintf(stderr, Name ": cannot open %s: %s\n",
                                                dev, strerror(errno));
 */                             st->err=1;
@@ -226,7 +228,7 @@ int Monitor(mddev_dev_t devlist,
                        if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
                                if (!st->err)
                                        alert("DeviceDisappeared", dev, NULL,
-                                             mailaddr, alert_cmd);
+                                             mailaddr, alert_cmd, dosyslog);
 /*                                     fprintf(stderr, Name ": cannot get array info for %s: %s\n",
                                                dev, strerror(errno));
 */                             st->err=1;
@@ -237,7 +239,7 @@ int Monitor(mddev_dev_t devlist,
                                array.level != 6 && array.level != 10) {
                                if (!st->err)
                                        alert("DeviceDisappeared", dev, "Wrong-Level",
-                                             mailaddr, alert_cmd);
+                                             mailaddr, alert_cmd, dosyslog);
                                st->err = 1;
                                close(fd);
                                continue;
@@ -274,27 +276,27 @@ int Monitor(mddev_dev_t devlist,
                            mse &&      /* is in /proc/mdstat */
                            mse->pattern && strchr(mse->pattern, '_') /* degraded */
                                )
-                               alert("DegradedArray", dev, NULL, mailaddr, alert_cmd);
+                               alert("DegradedArray", dev, NULL, mailaddr, alert_cmd, dosyslog);
 
                        if (st->utime == 0 && /* new array */
                            st->expected_spares > 0 && 
                            array.spare_disks < st->expected_spares) 
-                               alert("SparesMissing", dev, NULL, mailaddr, alert_cmd);
+                               alert("SparesMissing", dev, NULL, mailaddr, alert_cmd, dosyslog);
                        if (mse &&
                            st->percent == -1 && 
                            mse->percent >= 0)
-                               alert("RebuildStarted", dev, NULL, mailaddr, alert_cmd);
+                               alert("RebuildStarted", dev, NULL, mailaddr, alert_cmd, dosyslog);
                        if (mse &&
                            st->percent >= 0 &&
                            mse->percent >= 0 &&
                            (mse->percent / 20) > (st->percent / 20))
                                alert(percentalerts[mse->percent/20],
-                                     dev, NULL, mailaddr, alert_cmd);
+                                     dev, NULL, mailaddr, alert_cmd, dosyslog);
 
                        if (mse &&
                            mse->percent == -1 &&
                            st->percent >= 0)
-                               alert("RebuildFinished", dev, NULL, mailaddr, alert_cmd);
+                               alert("RebuildFinished", dev, NULL, mailaddr, alert_cmd, dosyslog);
 
                        if (mse)
                                st->percent = mse->percent;
@@ -323,19 +325,19 @@ int Monitor(mddev_dev_t devlist,
                                             ((st->devstate[i]&change)&(1<<MD_DISK_ACTIVE)) ||
                                             ((st->devstate[i]&change)&(1<<MD_DISK_SYNC)))
                                                )
-                                               alert("Fail", dev, dv, mailaddr, alert_cmd);
+                                               alert("Fail", dev, dv, mailaddr, alert_cmd, dosyslog);
                                        else if (i >= (unsigned)array.raid_disks &&
                                                 (disc.major || disc.minor) &&
                                                 st->devid[i] == makedev(disc.major, disc.minor) &&
                                                 ((newstate&change)&(1<<MD_DISK_FAULTY))
                                                )
-                                               alert("FailSpare", dev, dv, mailaddr, alert_cmd);
+                                               alert("FailSpare", dev, dv, mailaddr, alert_cmd, dosyslog);
                                        else if (i < (unsigned)array.raid_disks &&
                                                 (((st->devstate[i]&change)&(1<<MD_DISK_FAULTY)) ||
                                                  ((newstate&change)&(1<<MD_DISK_ACTIVE)) ||
                                                  ((newstate&change)&(1<<MD_DISK_SYNC)))
                                                )
-                                               alert("SpareActive", dev, dv, mailaddr, alert_cmd);
+                                               alert("SpareActive", dev, dv, mailaddr, alert_cmd, dosyslog);
                                }
                                st->devstate[i] = disc.state;
                                st->devid[i] = makedev(disc.major, disc.minor);
@@ -381,7 +383,7 @@ int Monitor(mddev_dev_t devlist,
                                        st->spare_group = NULL;
                                        st->expected_spares = -1;
                                        statelist = st;
-                                       alert("NewArray", st->devname, NULL, mailaddr, alert_cmd);
+                                       alert("NewArray", st->devname, NULL, mailaddr, alert_cmd, dosyslog);
                                        new_found = 1;
                                }
                }
@@ -422,7 +424,7 @@ int Monitor(mddev_dev_t devlist,
                                                                  (unsigned long)dev) == 0) {
                                                                if (ioctl(fd1, HOT_ADD_DISK,
                                                                          (unsigned long)dev) == 0) {
-                                                                       alert("MoveSpare", st->devname, st2->devname, mailaddr, alert_cmd);
+                                                                       alert("MoveSpare", st->devname, st2->devname, mailaddr, alert_cmd, dosyslog);
                                                                        close(fd1);
                                                                        close(fd2);
                                                                        break;
@@ -448,8 +450,11 @@ int Monitor(mddev_dev_t devlist,
 }
 
 
-static void alert(char *event, char *dev, char *disc, char *mailaddr, char *cmd)
+static void alert(char *event, char *dev, char *disc, char *mailaddr, char *cmd,
+                 int dosyslog)
 {
+       int priority;
+
        if (!cmd && !mailaddr) {
                time_t now = time(0);
               
@@ -494,5 +499,27 @@ static void alert(char *event, char *dev, char *disc, char *mailaddr, char *cmd)
                }
 
        }
-       /* FIXME log the event to syslog maybe */
+
+       /* log the event to syslog maybe */
+       if (dosyslog) {
+               /* Log at a different severity depending on the event.
+                *
+                * These are the critical events:  */
+               if (strncmp(event, "Fail", 4)==0 ||
+                   strncmp(event, "Degrade", 7)==0 ||
+                   strncmp(event, "DeviceDisappeared", 17)==0)
+                       priority = LOG_CRIT;
+               /* Good to know about, but are not failures: */
+               else if (strncmp(event, "Rebuild", 7)==0 ||
+                        strncmp(event, "MoveSpare", 9)==0)
+                       priority = LOG_WARNING;
+               /* Everything else: */
+               else
+                       priority = LOG_INFO;
+
+               if (disc)
+                       syslog(priority, "%s event detected on md device %s, component device %s", event, dev, disc);
+               else
+                       syslog(priority, "%s event detected on md device %s", event, dev);
+       }
 }