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-rw-r--r--udev.c164
-rw-r--r--udev.h3
-rw-r--r--udevstart.c24
-rw-r--r--udevtest.c2
4 files changed, 92 insertions, 101 deletions
diff --git a/udev.c b/udev.c
index 90c34d80..114ca0a5 100644
--- a/udev.c
+++ b/udev.c
@@ -40,9 +40,6 @@
char **main_argv;
char **main_envp;
-/* local variables */
-static int is_udevstart;
-
#ifdef LOG
unsigned char logname[LOGNAME_SIZE];
void log_message(int level, const char *format, ...)
@@ -79,36 +76,72 @@ static char *subsystem_blacklist[] = {
""
};
-int __udev_hotplug(char *action, const char *devpath, const char *subsystem)
+int main(int argc, char *argv[], char *envp[])
{
- int retval = -EINVAL;
- int i;
+ main_argv = argv;
+ main_envp = envp;
struct sigaction act;
- const int nofake = 0;
+ char *action;
+ char *devpath = "";
+ char *subsystem = "";
+ int i;
+ int retval = -EINVAL;
+ enum {
+ ADD,
+ REMOVE,
+ UDEVSTART,
+ } act_type;
- dbg("looking at '%s'", devpath);
+ dbg("version %s", UDEV_VERSION);
- /* 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;
- }
+ /* initialize our configuration */
+ udev_init_config();
- i = 0;
- while (subsystem_blacklist[i][0] != '\0') {
- if (strcmp(subsystem, subsystem_blacklist[i]) == 0) {
- dbg("don't care about '%s' devices", subsystem);
+ if (strstr(argv[0], "udevstart")) {
+ act_type = UDEVSTART;
+ } else {
+ action = get_action();
+ if (!action) {
+ dbg("no action?");
+ goto exit;
+ }
+ if (strcmp(action, "add") == 0) {
+ act_type = ADD;
+ } else if (strcmp(action, "remove") == 0) {
+ act_type = REMOVE;
+ } else {
+ dbg("unknown action '%s'", action);
goto exit;
}
- i++;
- }
- /* initialize udev database */
- retval = udevdb_init(UDEVDB_DEFAULT);
- if (retval != 0) {
- dbg("unable to initialize database");
- goto exit;
+ 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;
+ }
+
+ subsystem = get_subsystem(main_argv[1]);
+ if (!subsystem) {
+ dbg("no subsystem?");
+ goto exit;
+ }
+
+ /* skip blacklisted subsystems */
+ i = 0;
+ while (subsystem_blacklist[i][0] != '\0') {
+ if (strcmp(subsystem, subsystem_blacklist[i]) == 0) {
+ dbg("don't care about '%s' devices", subsystem);
+ goto exit;
+ }
+ i++;
+ }
}
/* set signal handlers */
@@ -118,76 +151,31 @@ int __udev_hotplug(char *action, const char *devpath, const char *subsystem)
sigaction(SIGINT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
- if (strcmp(action, "add") == 0) {
- /* Already done. */
- if (!is_udevstart)
- namedev_init();
- retval = udev_add_device(devpath, subsystem, nofake);
- goto action_done;
+ /* initialize udev database */
+ if (udevdb_init(UDEVDB_DEFAULT) != 0) {
+ dbg("unable to initialize database");
+ goto exit;
}
- if (strcmp(action, "remove") == 0) {
+ switch(act_type) {
+ case UDEVSTART:
+ dbg("udevstart");
+ namedev_init();
+ udev_sleep = 0;
+ retval = udev_start();
+ break;
+ case ADD:
+ dbg("udev add");
+ namedev_init();
+ retval = udev_add_device(devpath, subsystem, NOFAKE);
+ break;
+ case REMOVE:
+ dbg("udev remove");
retval = udev_remove_device(devpath, subsystem);
- goto action_done;
}
- dbg("unknown action '%s'", action);
- retval = -EINVAL;
-
-action_done:
udevdb_exit();
exit:
return retval;
}
-
-static int udev_hotplug(void)
-{
- char *action;
- char *devpath;
- char *subsystem;
-
- action = get_action();
- if (!action) {
- dbg("no action?");
- return -EINVAL;
- }
-
- devpath = get_devpath();
- if (!devpath) {
- dbg("no devpath?");
- return -EINVAL;
- }
-
- /* skip blacklisted subsystems */
- subsystem = get_subsystem(main_argv[1]);
- if (!subsystem) {
- dbg("no subsystem?");
- return -EINVAL;
- }
-
- return __udev_hotplug(action, devpath, subsystem);
-}
-
-int main(int argc, char *argv[], char *envp[])
-{
- main_argv = argv;
- main_envp = envp;
-
- if (strstr(argv[0], "udevstart")) {
- /* Setup env variables. */
- setenv("UDEV_NO_SLEEP", "1", 1);
- is_udevstart = 1;
- }
-
- /* initialize our configuration */
- udev_init_config();
-
- dbg("version %s", UDEV_VERSION);
-
- if (is_udevstart) {
- namedev_init();
- return udev_start();
- } else
- return udev_hotplug();
-}
diff --git a/udev.h b/udev.h
index 7c5d18a3..d049fc1f 100644
--- a/udev.h
+++ b/udev.h
@@ -40,6 +40,9 @@
#define LINE_SIZE 256
+#define FAKE 1
+#define NOFAKE 0
+
/* length of public data */
#define UDEVICE_LEN (offsetof(struct udevice, bus_id))
diff --git a/udevstart.c b/udevstart.c
index 2d5553e9..cb1c7888 100644
--- a/udevstart.c
+++ b/udevstart.c
@@ -70,18 +70,10 @@ 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)
-{
- /* Now call __udev_hotplug(). */
- if (__udev_hotplug("add", path, subsystem)) {
- dbg("Calling of udev_hotplug failed");
- exit(1);
- }
-}
-
/* 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 */
@@ -106,14 +98,14 @@ static void exec_list(struct list_head *device_list)
if (found)
continue;
- udev_exec(loop_device->path, loop_device->subsys);
+ udev_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);
+ udev_add_device(loop_device->path, loop_device->subsys, NOFAKE);
list_del(&loop_device->list);
free(loop_device);
}
@@ -209,19 +201,27 @@ 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);
diff --git a/udevtest.c b/udevtest.c
index 36f223e1..f24c7e4b 100644
--- a/udevtest.c
+++ b/udevtest.c
@@ -102,7 +102,7 @@ int main(int argc, char *argv[], char *envp[])
subsystem = argv[2];
/* simulate node creation with fake flag */
- udev_add_device(devpath, subsystem, fake);
+ udev_add_device(devpath, subsystem, FAKE);
exit:
return 0;
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-21 11:57:25 +0000