chiark / gitweb /
[PATCH] split udev and udevstart
[elogind.git] / udevstart.c
similarity index 77%
rename from udev_start.c
rename to udevstart.c
index dcb4293..97d3849 100644 (file)
 #include <stddef.h>
 #include <string.h>
 #include <stdio.h>
+#include <unistd.h>
 #include <errno.h>
 #include <ctype.h>
 #include <dirent.h>
+#include <signal.h>
 #include <sys/wait.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <unistd.h>
 
 #include "libsysfs/sysfs/libsysfs.h"
 #include "logging.h"
+#include "namedev.h"
 #include "udev_utils.h"
 #include "list.h"
 #include "udev.h"
 
-
-#define MAX_PATH_SIZE          512
+#ifdef USE_LOG
+void log_message(int level, const char *format, ...)
+{
+}
+#endif
 
 struct device {
        struct list_head list;
-       char path[MAX_PATH_SIZE];
-       char subsys[MAX_PATH_SIZE];
+       char path[DEVPATH_SIZE];
+       char subsys[SUBSYSTEM_SIZE];
 };
 
 /* sort files in lexical order */
@@ -100,7 +105,7 @@ static int add_device(const char *path, const char *subsystem)
        setenv("DEVPATH", devpath, 1);
        setenv("SUBSYSTEM", subsystem, 1);
 
-       dbg("exec  : '%s' (%s)\n", devpath, path);
+       dbg("exec: '%s' (%s)\n", devpath, path);
 
        class_dev = sysfs_open_class_device_path(path);
        if (class_dev == NULL) {
@@ -118,6 +123,7 @@ static int add_device(const char *path, const char *subsystem)
        }
 
        sysfs_close_class_device(class_dev);
+       udev_cleanup_device(&udev);
 
        return 0;
 }
@@ -167,11 +173,11 @@ static void exec_list(struct list_head *device_list)
 
 static int has_devt(const char *directory)
 {
-       char filename[MAX_PATH_SIZE];
+       char filename[NAME_SIZE];
        struct stat statbuf;
 
-       snprintf(filename, MAX_PATH_SIZE, "%s/dev", directory);
-       filename[MAX_PATH_SIZE-1] = '\0';
+       snprintf(filename, NAME_SIZE, "%s/dev", directory);
+       filename[NAME_SIZE-1] = '\0';
 
        if (stat(filename, &statbuf) == 0)
                return 1;
@@ -181,42 +187,42 @@ static int has_devt(const char *directory)
 
 static void udev_scan_block(void)
 {
-       char base[MAX_PATH_SIZE];
+       char base[NAME_SIZE];
        DIR *dir;
        struct dirent *dent;
        LIST_HEAD(device_list);
 
-       snprintf(base, MAX_PATH_SIZE, "%s/block", sysfs_path);
-       base[MAX_PATH_SIZE-1] = '\0';
+       snprintf(base, DEVPATH_SIZE, "%s/block", sysfs_path);
+       base[DEVPATH_SIZE-1] = '\0';
 
        dir = opendir(base);
        if (dir != NULL) {
                for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
-                       char dirname[MAX_PATH_SIZE];
+                       char dirname[DEVPATH_SIZE];
                        DIR *dir2;
                        struct dirent *dent2;
 
                        if (dent->d_name[0] == '.')
                                continue;
 
-                       snprintf(dirname, MAX_PATH_SIZE, "%s/%s", base, dent->d_name);
-                       dirname[MAX_PATH_SIZE-1] = '\0';
+                       snprintf(dirname, NAME_SIZE, "%s/%s", base, dent->d_name);
+                       dirname[NAME_SIZE-1] = '\0';
                        if (has_devt(dirname))
                                device_list_insert(dirname, "block", &device_list);
                        else
                                continue;
 
-                       snprintf(dirname, MAX_PATH_SIZE, "%s/%s", base, dent->d_name);
+                       /* look for partitions */
                        dir2 = opendir(dirname);
                        if (dir2 != NULL) {
                                for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
-                                       char dirname2[MAX_PATH_SIZE];
+                                       char dirname2[DEVPATH_SIZE];
 
                                        if (dent2->d_name[0] == '.')
                                                continue;
 
-                                       snprintf(dirname2, MAX_PATH_SIZE, "%s/%s", dirname, dent2->d_name);
-                                       dirname2[MAX_PATH_SIZE-1] = '\0';
+                                       snprintf(dirname2, DEVPATH_SIZE, "%s/%s", dirname, dent2->d_name);
+                                       dirname2[DEVPATH_SIZE-1] = '\0';
 
                                        if (has_devt(dirname2))
                                                device_list_insert(dirname2, "block", &device_list);
@@ -226,42 +232,42 @@ static void udev_scan_block(void)
                }
                closedir(dir);
        }
-
        exec_list(&device_list);
 }
 
 static void udev_scan_class(void)
 {
-       char base[MAX_PATH_SIZE];
+       char base[DEVPATH_SIZE];
        DIR *dir;
        struct dirent *dent;
        LIST_HEAD(device_list);
 
-       snprintf(base, MAX_PATH_SIZE, "%s/class", sysfs_path);
-       base[MAX_PATH_SIZE-1] = '\0';
+       snprintf(base, DEVPATH_SIZE, "%s/class", sysfs_path);
+       base[DEVPATH_SIZE-1] = '\0';
 
        dir = opendir(base);
        if (dir != NULL) {
                for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
-                       char dirname[MAX_PATH_SIZE];
+                       char dirname[DEVPATH_SIZE];
                        DIR *dir2;
                        struct dirent *dent2;
 
                        if (dent->d_name[0] == '.')
                                continue;
 
-                       snprintf(dirname, MAX_PATH_SIZE, "%s/%s", base, dent->d_name);
-                       dirname[MAX_PATH_SIZE-1] = '\0';
+                       snprintf(dirname, DEVPATH_SIZE, "%s/%s", base, dent->d_name);
+                       dirname[DEVPATH_SIZE-1] = '\0';
+
                        dir2 = opendir(dirname);
                        if (dir2 != NULL) {
                                for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
-                                       char dirname2[MAX_PATH_SIZE];
+                                       char dirname2[DEVPATH_SIZE];
 
                                        if (dent2->d_name[0] == '.')
                                                continue;
 
-                                       snprintf(dirname2, MAX_PATH_SIZE, "%s/%s", dirname, dent2->d_name);
-                                       dirname2[MAX_PATH_SIZE-1] = '\0';
+                                       snprintf(dirname2, DEVPATH_SIZE, "%s/%s", dirname, dent2->d_name);
+                                       dirname2[DEVPATH_SIZE-1] = '\0';
 
                                        /* pass the net class as it is */
                                        if (strcmp(dent->d_name, "net") == 0)
@@ -274,18 +280,46 @@ static void udev_scan_class(void)
                }
                closedir(dir);
        }
-
        exec_list(&device_list);
 }
 
-int udev_start(void)
+static void asmlinkage sig_handler(int signum)
 {
-       /* set environment for callouts and dev.d/ */
+       switch (signum) {
+               case SIGALRM:
+                       exit(1);
+               case SIGINT:
+               case SIGTERM:
+                       exit(20 + signum);
+       }
+}
+
+int main(int argc, char *argv[], char *envp[])
+{
+       struct sigaction act;
+
+       udev_init_config();
+
+       /* set signal handlers */
+       memset(&act, 0x00, sizeof(act));
+       act.sa_handler = (void (*) (int))sig_handler;
+       sigemptyset (&act.sa_mask);
+       act.sa_flags = 0;
+       sigaction(SIGALRM, &act, NULL);
+       sigaction(SIGINT, &act, NULL);
+       sigaction(SIGTERM, &act, NULL);
+
+       /* trigger timeout to prevent hanging processes */
+       alarm(ALARM_TIMEOUT);
+
+       /* set environment for executed programs */
        setenv("ACTION", "add", 1);
        setenv("UDEV_START", "1", 1);
 
-       udev_scan_class();
+       namedev_init();
+
        udev_scan_block();
+       udev_scan_class();
 
        return 0;
 }