[PATCH] overall whitespace + debug text conditioning

[elogind.git] / udev.c

diff --git a/udev.c b/udev.c
index 1ac1c985076be16e6d1eab73fdd65d7b58cb7d33..a562bc27bea63ceb570598f4e2bed65300e6108f 100644 (file)
--- a/udev.c
+++ b/udev.c
@@ -23,11 +23,30 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
 #include "udev.h"
 #include "udev_version.h"
+#include "namedev.h"
+#include "udevdb.h"
+#include "libsysfs/libsysfs.h"
+
+/* global variables */
+char **main_argv;
+char **main_envp;
 
+char sysfs_path[SYSFS_PATH_MAX];
+char *udev_config_dir = UDEV_CONFIG_DIR;
+char *udev_root = UDEV_ROOT;
+char udev_db_filename[PATH_MAX+NAME_MAX];
+char udev_config_permission_filename[PATH_MAX+NAME_MAX];
+char udev_config_filename[PATH_MAX+NAME_MAX];
 
-static char *get_action(void)
+
+static inline char *get_action(void)
 {
        char *action;
 
@@ -35,49 +54,137 @@ static char *get_action(void)
        return action;
 }
 
+static inline char *get_devpath(void)
+{
+       char *devpath;
+
+       devpath = getenv("DEVPATH");
+       return devpath;
+}
+
+static inline char *get_seqnum(void)
+{
+       char *seqnum;
 
-/* yeah this should be dynamically allocated... */
-static char device[255];
+       seqnum = getenv("SEQNUM");
+       return seqnum;
+}
 
-static char *get_device(void)
+static void get_dirs(void)
 {
        char *temp;
+       char *udev_db = UDEV_DB;
+       char *udev_config = UDEV_CONFIG_FILE;
+       char *udev_permission = UDEV_CONFIG_PERMISSION_FILE;
+       int retval;
+
+       retval = sysfs_get_mnt_path(sysfs_path, SYSFS_PATH_MAX);
+       if (retval)
+               dbg("sysfs_get_mnt_path failed");
+
+       /* see if we should try to override any of the default values */
+       temp = getenv("UDEV_TEST");
+       if (temp != NULL) {
+               /* hm testing is happening, use the specified values, if they are present */
+               temp = getenv("SYSFS_PATH");
+               if (temp)
+                       strncpy(sysfs_path, temp, sizeof(sysfs_path));
+               temp = getenv("UDEV_CONFIG_DIR");
+               if (temp)
+                       udev_config_dir = temp;
+               temp = getenv("UDEV_ROOT");
+               if (temp)
+                       udev_root = temp;
+               temp = getenv("UDEV_DB");
+               if (temp)
+                       udev_db = temp;
+               temp = getenv("UDEV_CONFIG_FILE");
+               if (temp)
+                       udev_config = temp;
+               temp = getenv("UDEV_PERMISSION_FILE");
+               if (temp)
+                       udev_permission = temp;
+       }
+       dbg("sysfs_path='%s'", sysfs_path);
 
-       temp = getenv("DEVPATH");
-       if (temp == NULL)
-               return NULL;
-       strcpy(device, SYSFS_ROOT);
-       strcat(device, temp);
+       strncpy(udev_db_filename, udev_config_dir, sizeof(udev_db_filename));
+       strncat(udev_db_filename, udev_db, sizeof(udev_db_filename));
 
-       return device;
+       strncpy(udev_config_filename, udev_config_dir, sizeof(udev_config_filename));
+       strncat(udev_config_filename, udev_config, sizeof(udev_config_filename));
+       
+       strncpy(udev_config_permission_filename, udev_config_dir, sizeof(udev_config_permission_filename));
+       strncat(udev_config_permission_filename, udev_permission, sizeof(udev_config_permission_filename));
 }
 
-
-int main(int argc, char *argv[])
+int main(int argc, char **argv, char **envp)
 {
-       char *subsystem;
        char *action;
-       char *dev;
+       char *devpath;
+       char *subsystem;
+       int retval = -EINVAL;
        
+       main_argv = argv;
+       main_envp = envp;
+
+       dbg("version %s", UDEV_VERSION);
+
        if (argc != 2) {
                dbg ("unknown number of arguments");
-               return 1;
+               goto exit;
        }
 
        subsystem = argv[1];
 
+       devpath = get_devpath();
+       if (!devpath) {
+               dbg ("no devpath?");
+               goto exit;
+       }
+       dbg("looking at '%s'", devpath);
+
+       /* we only care about class devices and block stuff */
+       if (!strstr(devpath, "class") &&
+           !strstr(devpath, "block")) {
+               dbg("not a block or class device");
+               goto exit;
+       }
+
+       /* but we don't care about net class devices */
+       if (strcmp(subsystem, "net") == 0) {
+               dbg("don't care about net devices");
+               goto exit;
+       }
+
        action = get_action();
        if (!action) {
                dbg ("no action?");
-               return 1;
+               goto exit;
        }
 
-       dev = get_device();
-       if (!dev) {
-               dbg ("no device?");
-               return 1;
+       /* initialize udev database */
+       get_dirs();
+       retval = udevdb_init(UDEVDB_DEFAULT);
+       if (retval != 0) {
+               dbg("unable to initialize database");
+               goto exit;
        }
 
-       return 0;
-}
+       /* initialize the naming deamon */
+       namedev_init();
+
+       if (strcmp(action, "add") == 0)
+               retval = udev_add_device(devpath, subsystem);
+
+       else if (strcmp(action, "remove") == 0)
+               retval = udev_remove_device(devpath, subsystem);
 
+       else {
+               dbg("unknown action '%s'", action);
+               retval = -EINVAL;
+       }
+       udevdb_exit();
+
+exit:  
+       return retval;
+}