X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevstart.c;h=cabafb0abc76689064131e41d87ebdcb90276d19;hp=3ecfd4cb61d55bab55e06d8d49287a89a9699ada;hb=8e0871196c916be60a9d0327ce8483c4f9763c17;hpb=462be028f18d94ab06c913768da78e30a1a66b68

diff --git a/udevstart.c b/udevstart.c
index 3ecfd4cb6..cabafb0ab 100644
--- a/udevstart.c
+++ b/udevstart.c
@@ -36,25 +36,12 @@
 #include "logging.h"
 #include "udev_lib.h"
 #include "list.h"
-
-
-#ifdef LOG
-unsigned char logname[LOGNAME_SIZE];
-void log_message(int level, const char *format, ...)
-{
-	va_list args;
-
-	va_start(args, format);
-	vsyslog(level, format, args);
-	va_end(args);
-}
-#endif
+#include "udev.h"
 
 
 #define MAX_PATHLEN		1024
 #define SYSBLOCK		"/sys/block"
 #define SYSCLASS		"/sys/class"
-#define UDEV_BIN		"/sbin/udev"
 
 struct device {
 	struct list_head list;
@@ -83,51 +70,58 @@ static int device_list_insert(char *path, char *subsystem, struct list_head *dev
 	strfieldcpy(new_device->path, path);
 	strfieldcpy(new_device->subsys, subsystem);
 	list_add_tail(&new_device->list, &loop_device->list);
+	dbg("add '%s' from subsys '%s'", new_device->path, new_device->subsys);
 	return 0;
 }
 
-static void udev_exec(const char *path, const char* subsystem)
-{
-	pid_t pid;
-	char action[] = "ACTION=add";
-	char devpath[MAX_PATHLEN];
-	char nosleep[] = "UDEV_NO_SLEEP=1";
-	char *env[] = { action, devpath, nosleep, NULL };
-
-	strcpy(devpath, "DEVPATH=");
-	strfieldcat(devpath, path);
-
-	pid = fork();
-	switch (pid) {
-	case 0:
-		/* child */
-		execle(UDEV_BIN, "udev", subsystem, NULL, env);
-		dbg("exec of child failed");
-		exit(1);
-		break;
-	case -1:
-		dbg("fork of child failed");
-		break;
-	default:
-		wait(NULL);
-	}
-}
-
 /* list of devices that we should run last due to any one of a number of reasons */
 static char *last_list[] = {
 	"/block/dm",	/* on here because dm wants to have the block devices around before it */
 	NULL,
 };
 
+/* list of devices that we should run first due to any one of a number of reasons */
+static char *first_list[] = {
+	"/class/mem",	/* people tend to like their memory devices around first... */
+	NULL,
+};
+
+static void add_device(char *path, char *subsys, int fake)
+{
+	char *argv[3];
+
+	/* fake argument vector and environment for callouts and dev.d/ */
+	argv[0] = "udev";
+	argv[1] = subsys;
+	argv[2] = NULL;
+
+	main_argv = argv;
+	setenv("DEVPATH", path, 1);
+	setenv("ACTION", "add", 1);
+	udev_add_device(path, subsys, fake);
+}
+
 static void exec_list(struct list_head *device_list)
 {
 	struct device *loop_device;
 	struct device *tmp_device;
+	int i;
+
+	/* handle the "first" type devices first */
+	list_for_each_entry_safe(loop_device, tmp_device, device_list, list) {
+		for (i=0; first_list[i] != NULL; i++) {
+			if (strncmp(loop_device->path, first_list[i], strlen(first_list[i])) == 0) {
+				add_device(loop_device->path, loop_device->subsys, NOFAKE);
+				list_del(&loop_device->list);
+				free(loop_device);
+				break;
+			}
+		}
+	}
 
 	/* handle the devices we are allowed to, excluding the "last" type devices */
 	list_for_each_entry_safe(loop_device, tmp_device, device_list, list) {
 		int found = 0;
-		int i;
 		for (i=0; last_list[i] != NULL; i++) {
 			if (strncmp(loop_device->path, last_list[i], strlen(last_list[i])) == 0) {
 				found = 1;
@@ -137,14 +131,14 @@ static void exec_list(struct list_head *device_list)
 		if (found)
 			continue;
 
-		udev_exec(loop_device->path, loop_device->subsys);
+		add_device(loop_device->path, loop_device->subsys, NOFAKE);
 		list_del(&loop_device->list);
 		free(loop_device);
 	}
 
 	/* handle the rest of the devices left over, if any */
 	list_for_each_entry_safe(loop_device, tmp_device, device_list, list) {
-		udev_exec(loop_device->path, loop_device->subsys);
+		add_device(loop_device->path, loop_device->subsys, NOFAKE);
 		list_del(&loop_device->list);
 		free(loop_device);
 	}
@@ -232,7 +226,7 @@ static void udev_scan_class(void)
 			dir2 = opendir(dirname);
 			if (dir2 != NULL) {
 				for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
-					char dirname2[MAX_PATHLEN-1];
+					char dirname2[MAX_PATHLEN];
 					DIR *dir3;
 					struct dirent *dent3;
 
@@ -240,19 +234,27 @@ static void udev_scan_class(void)
 					    (strcmp(dent2->d_name, "..") == 0))
 						continue;
 
+					/* pass the net class as it is */
+					if (strcmp(dent->d_name, "net") == 0) {
+						snprintf(dirname2, MAX_PATHLEN, "/class/net/%s", dent2->d_name);
+						device_list_insert(dirname2, "net", &device_list);
+						continue;
+					}
+
 					snprintf(dirname2, MAX_PATHLEN, "%s/%s", dirname, dent2->d_name);
 					dirname2[MAX_PATHLEN-1] = '\0';
-
 					dir3 = opendir(dirname2);
 					if (dir3 != NULL) {
 						for (dent3 = readdir(dir3); dent3 != NULL; dent3 = readdir(dir3)) {
 							char filename[MAX_PATHLEN];
 
+							/* pass devices with a "dev" file */
 							if (strcmp(dent3->d_name, "dev") == 0) {
 								snprintf(filename, MAX_PATHLEN, "/class/%s/%s",
 									 dent->d_name, dent2->d_name);
 								filename[MAX_PATHLEN-1] = '\0';
 								device_list_insert(filename, dent->d_name, &device_list);
+								break;
 							}
 						}
 						closedir(dir3);
@@ -267,12 +269,9 @@ static void udev_scan_class(void)
 	exec_list(&device_list);
 }
 
-int main(int argc, char *argv[], char *envp[])
+int udev_start(void)
 {
-	init_logging("udevstart");
-
 	udev_scan_class();
 	udev_scan_block();
-
 	return 0;
 }