From: kay.sievers@vrfy.org <kay.sievers@vrfy.org>
Date: Fri, 4 Mar 2005 20:13:18 +0000 (+0100)
Subject: [PATCH] correct udev_init_device
X-Git-Tag: 055~55
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03cfa1394fcc2c4386f8af22e5a4d9fdd7cecc50;p=systemd

[PATCH] correct udev_init_device
---

diff --git a/udev.c b/udev.c
index 7854bc74..802e41d1 100644
--- a/udev.c
+++ b/udev.c
@@ -96,7 +96,6 @@ static void asmlinkage sig_handler(int signum)
 
 int main(int argc, char *argv[], char *envp[])
 {
-	struct sigaction act;
 	struct sysfs_class_device *class_dev;
 	struct sysfs_device *devices_dev;
 	struct udevice udev;
@@ -106,6 +105,7 @@ int main(int argc, char *argv[], char *envp[])
 	const char *devpath;
 	const char *subsystem;
 	int managed_event;
+	struct sigaction act;
 	int retval = -EINVAL;
 
 	if (argc == 2 && strcmp(argv[1], "-V") == 0) {
@@ -153,16 +153,10 @@ int main(int argc, char *argv[], char *envp[])
 	if (!subsystem && argc == 2)
 		subsystem = argv[1];
 
-	if (!action) {
-		dbg("no action");
-		goto hotplug;
-	}
-	if (!subsystem) {
-		dbg("no subsystem");
-		goto hotplug;
-	}
-	if (!devpath) {
-		dbg("no devpath");
+	udev_init_device(&udev, devpath, subsystem);
+
+	if (!action || !subsystem || !devpath) {
+		dbg("action, subsystem or devpath missing");
 		goto hotplug;
 	}
 
@@ -170,8 +164,6 @@ int main(int argc, char *argv[], char *envp[])
 	if (udev_log)
 		setenv("UDEV_LOG", "1", 1);
 
-	udev_init_device(&udev, devpath, subsystem);
-
 	if (udev.type == BLOCK || udev.type == CLASS || udev.type == NET) {
 		if (strcmp(action, "add") == 0) {
 			/* wait for sysfs and possibly add node */
diff --git a/udev.h b/udev.h
index d6dbd7c3..ddcfa81c 100644
--- a/udev.h
+++ b/udev.h
@@ -31,6 +31,7 @@
 #define ALARM_TIMEOUT			120
 #define COMMENT_CHARACTER		'#'
 
+#define LINE_SIZE			512
 #define NAME_SIZE			256
 #define USER_SIZE			32
 
@@ -39,8 +40,6 @@
 #define SUBSYSTEM_SIZE			32
 #define SEQNUM_SIZE			32
 
-#define LINE_SIZE			512
-
 #define DEVD_DIR			"/etc/dev.d"
 #define DEVD_SUFFIX			".dev"
 
@@ -62,6 +61,7 @@ struct udevice {
 	char subsystem[SUBSYSTEM_SIZE];
 
 	char name[NAME_SIZE];
+	char devname[NAME_SIZE];
 	char symlink[NAME_SIZE];
 	char owner[USER_SIZE];
 	char group[USER_SIZE];
@@ -69,7 +69,6 @@ struct udevice {
 	char type;
 	dev_t devt;
 
-	char devname[NAME_SIZE];
 	char tmp_node[NAME_SIZE];
 	int partitions;
 	int ignore_remove;
diff --git a/udev_utils.c b/udev_utils.c
index c1e49762..f2534dd3 100644
--- a/udev_utils.c
+++ b/udev_utils.c
@@ -43,52 +43,49 @@ int udev_init_device(struct udevice *udev, const char* devpath, const char *subs
 
 	memset(udev, 0x00, sizeof(struct udevice));
 
+	if (subsystem)
+		strfieldcpy(udev->subsystem, subsystem);
+
 	if (devpath) {
 		strfieldcpy(udev->devpath, devpath);
 		no_trailing_slash(udev->devpath);
-	}
-	if (subsystem)
-		strfieldcpy(udev->subsystem, subsystem);
 
-	if (strcmp(udev->subsystem, "block") == 0)
-		udev->type = BLOCK;
-	else if (strcmp(udev->subsystem, "net") == 0)
-		udev->type = NET;
-	else if (strncmp(udev->devpath, "/block/", 7) == 0)
-		udev->type = BLOCK;
-	else if (strncmp(udev->devpath, "/class/net/", 11) == 0)
-		udev->type = NET;
-	else if (strncmp(udev->devpath, "/class/", 7) == 0)
-		udev->type = CLASS;
-	else if (strncmp(udev->devpath, "/devices/", 9) == 0)
-		udev->type = PHYSDEV;
+		if (strncmp(udev->devpath, "/block/", 7) == 0)
+			udev->type = BLOCK;
+		else if (strncmp(udev->devpath, "/class/net/", 11) == 0)
+			udev->type = NET;
+		else if (strncmp(udev->devpath, "/class/", 7) == 0)
+			udev->type = CLASS;
+		else if (strncmp(udev->devpath, "/devices/", 9) == 0)
+			udev->type = PHYSDEV;
+
+		/* get kernel name */
+		pos = strrchr(udev->devpath, '/');
+		if (pos) {
+			strfieldcpy(udev->kernel_name, &pos[1]);
+			dbg("kernel_name='%s'", udev->kernel_name);
+
+			/* Some block devices have '!' in their name, change that to '/' */
+			pos = udev->kernel_name;
+			while (pos[0] != '\0') {
+				if (pos[0] == '!')
+					pos[0] = '/';
+				pos++;
+			}
+
+			/* get kernel number */
+			pos = &udev->kernel_name[strlen(udev->kernel_name)];
+			while (isdigit(pos[-1]))
+				pos--;
+			strfieldcpy(udev->kernel_number, pos);
+			dbg("kernel_number='%s'", udev->kernel_number);
+		}
+	}
 
 	udev->mode = 0660;
 	strcpy(udev->owner, "root");
 	strcpy(udev->group, "root");
 
-	/* get kernel name */
-	pos = strrchr(udev->devpath, '/');
-	if (pos == NULL)
-		return -1;
-	strfieldcpy(udev->kernel_name, &pos[1]);
-
-	/* get kernel number */
-	pos = &udev->kernel_name[strlen(udev->kernel_name)];
-	while (isdigit(pos[-1]))
-		pos--;
-	strfieldcpy(udev->kernel_number, pos);
-	dbg("kernel_number='%s'", udev->kernel_number);
-
-	/* Some block devices have '!' in their name, change that to '/' */
-	pos = udev->kernel_name;
-	while (pos[0] != '\0') {
-		if (pos[0] == '!')
-			pos[0] = '/';
-		pos++;
-	}
-
-	dbg("kernel_name='%s'", udev->kernel_name);
 	return 0;
 }