[PATCH] klibc supports LOG_PID now, so remove our own implementation

[elogind.git] / udevd.c

diff --git a/udevd.c b/udevd.c
index dd505d03d95d2538111ad26cfc379b49560c01a3..91189eb86153fc52046b104ff4d2523179fe2d1e 100644 (file)
--- a/udevd.c
+++ b/udevd.c
@@ -38,8 +38,8 @@
 
 #include "list.h"
 #include "udev.h"
-#include "udev_lib.h"
 #include "udev_version.h"
+#include "udev_utils.h"
 #include "udevd.h"
 #include "logging.h"
 
@@ -64,7 +64,6 @@ static void reap_sigchilds(void);
 char *udev_bin;
 
 #ifdef LOG
-unsigned char logname[LOGNAME_SIZE];
 void log_message (int level, const char *format, ...)
 {
        va_list args;
@@ -124,6 +123,7 @@ static void msg_queue_insert(struct hotplug_msg *msg)
 /* forks event and removes event from run queue when finished */
 static void udev_run(struct hotplug_msg *msg)
 {
+       char *const argv[] = { "udev", msg->subsystem, NULL };
        pid_t pid;
 
        pid = fork();
@@ -131,7 +131,8 @@ static void udev_run(struct hotplug_msg *msg)
        case 0:
                /* child */
                close(udevsendsock);
-               execle(udev_bin, "udev", msg->subsystem, NULL, msg->envp);
+               logging_close();
+               execve(udev_bin, argv, msg->envp);
                dbg("exec of child failed");
                _exit(1);
                break;
@@ -149,22 +150,40 @@ static void udev_run(struct hotplug_msg *msg)
        }
 }
 
-/* returns already running task with devpath */
+/* returns still running task for the same event sequence */
 static struct hotplug_msg *running_with_devpath(struct hotplug_msg *msg)
 {
        struct hotplug_msg *loop_msg;
+       int i;
+
        list_for_each_entry(loop_msg, &running_list, list) {
                if (loop_msg->devpath == NULL || msg->devpath == NULL)
                        continue;
 
-               if (strcmp(loop_msg->devpath, msg->devpath) == 0)
-                       return loop_msg;
+               /* is a parent or child device event still running */
+               for (i = 0; i < DEVPATH_SIZE; i++) {
+                       if (loop_msg->devpath[i] == '\0' || msg->devpath[i] == '\0')
+                               return loop_msg;
+
+                       if (loop_msg->devpath[i] != msg->devpath[i])
+                               break;
+               }
+
+               /* is the physical device event still running on an add sequence */
+               if (msg->physdevpath && msg->action && strcmp(msg->action, "add") == 0)
+                       for (i = 0; i < DEVPATH_SIZE; i++) {
+                               if (loop_msg->devpath[i] == '\0' || msg->physdevpath[i] == '\0')
+                                       return loop_msg;
+
+                               if (loop_msg->devpath[i] != msg->physdevpath[i])
+                                       break;
+                       }
        }
 
        return NULL;
 }
 
-/* exec queue management routine executes the events and delays events for the same devpath */
+/* exec queue management routine executes the events and serializes events in the same sequence */
 static void exec_queue_manager(void)
 {
        struct hotplug_msg *loop_msg;
@@ -179,8 +198,8 @@ static void exec_queue_manager(void)
                        udev_run(loop_msg);
                        dbg("moved seq %llu to running list", loop_msg->seqnum);
                } else {
-                       dbg("delay seq %llu, cause seq %llu already working on '%s'",
-                               loop_msg->seqnum, msg->seqnum, msg->devpath);
+                       dbg("delay seq %llu (%s), cause seq %llu (%s) is still running",
+                           loop_msg->seqnum, loop_msg->devpath, msg->seqnum, msg->devpath);
                }
        }
 }
@@ -290,7 +309,7 @@ static void handle_udevsend_msg(int sock)
        /* copy environment buffer and reconstruct envp */
        memcpy(msg->envbuf, usend_msg.envbuf, envbuf_size);
        bufpos = 0;
-       for (i = 0; (bufpos < envbuf_size) && (i < HOTPLUG_NUM_ENVP-1); i++) {
+       for (i = 0; (bufpos < envbuf_size) && (i < HOTPLUG_NUM_ENVP-2); i++) {
                int keylen;
                char *key;
 
@@ -312,7 +331,11 @@ static void handle_udevsend_msg(int sock)
 
                if (strncmp(key, "SEQNUM=", 7) == 0)
                        msg->seqnum = strtoull(&key[7], NULL, 10);
+
+               if (strncmp(key, "PHYSDEVPATH=", 12) == 0)
+                       msg->physdevpath = &key[12];
        }
+       msg->envp[i++] = "MANAGED_EVENT=1";
        msg->envp[i] = NULL;
 
        /* if no seqnum is given, we move straight to exec queue */
@@ -419,7 +442,7 @@ int main(int argc, char *argv[], char *envp[])
 
        if (getuid() != 0) {
                dbg("need to be root, exit");
-               _exit(1);
+               goto exit;
        }
 
        /* make sure we don't lock any path */
@@ -430,7 +453,7 @@ int main(int argc, char *argv[], char *envp[])
        fd = open( "/dev/null", O_RDWR );
        if ( fd < 0 ) {
                dbg("error opening /dev/null %s", strerror(errno));
-               exit(1);
+               goto exit;
        }
        dup2(fd, 0);
        dup2(fd, 1);
@@ -445,29 +468,29 @@ int main(int argc, char *argv[], char *envp[])
        retval = pipe(pipefds);
        if (retval < 0) {
                dbg("error getting pipes: %s", strerror(errno));
-               exit(1);
+               goto exit;
        }
 
        retval = fcntl(pipefds[0], F_SETFL, O_NONBLOCK);
        if (retval < 0) {
                dbg("error fcntl on read pipe: %s", strerror(errno));
-               exit(1);
+               goto exit;
        }
        retval = fcntl(pipefds[0], F_SETFD, FD_CLOEXEC);
        if (retval < 0) {
                dbg("error fcntl on read pipe: %s", strerror(errno));
-               exit(1);
+               goto exit;
        }
 
        retval = fcntl(pipefds[1], F_SETFL, O_NONBLOCK);
        if (retval < 0) {
                dbg("error fcntl on write pipe: %s", strerror(errno));
-               exit(1);
+               goto exit;
        }
        retval = fcntl(pipefds[1], F_SETFD, FD_CLOEXEC);
        if (retval < 0) {
                dbg("error fcntl on write pipe: %s", strerror(errno));
-               exit(1);
+               goto exit;
        }
 
        /* set signal handlers */
@@ -488,13 +511,14 @@ int main(int argc, char *argv[], char *envp[])
        udevsendsock = socket(AF_LOCAL, SOCK_DGRAM, 0);
        if (udevsendsock == -1) {
                dbg("error getting socket, exit");
-               exit(1);
+               goto exit;
        }
 
        /* the bind takes care of ensuring only one copy running */
        retval = bind(udevsendsock, (struct sockaddr *) &saddr, addrlen);
        if (retval < 0) {
                dbg("bind failed, exit");
+               close(udevsendsock);
                goto exit;
        }
 
@@ -549,8 +573,8 @@ int main(int argc, char *argv[], char *envp[])
                        exec_queue_manager();
                }
        }
+
 exit:
-       close(udevsendsock);
        logging_close();
        return 1;
 }