* udevstart.c
*
* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
- *
+ * Copyright (C) 2004 Kay Sievers <kay@vrfy.org>
+ *
* Quick and dirty way to populate a /dev with udev if your system
- * does not have access to a shell. Based originally on a patch to udev
- * from Harald Hoyer <harald@redhat.com>
+ * does not have access to a shell. Based originally on a patch
+ * from:
+ * Harald Hoyer <harald@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
#include <ctype.h>
#include <dirent.h>
#include <signal.h>
+#include <syslog.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/types.h>
-#include "libsysfs/sysfs/libsysfs.h"
-#include "logging.h"
-#include "namedev.h"
-#include "udev_utils.h"
-#include "list.h"
#include "udev.h"
+#include "udev_rules.h"
+
+static const char *udev_run_str;
+static const char *udev_log_str;
+static struct udev_rules rules;
#ifdef USE_LOG
-void log_message(int level, const char *format, ...)
+void log_message(int priority, const char *format, ...)
{
+ va_list args;
+
+ if (priority > udev_log_priority)
+ return;
+
+ va_start(args, format);
+ vsyslog(priority, format, args);
+ va_end(args);
}
#endif
struct device {
- struct list_head list;
- char path[DEVPATH_SIZE];
- char subsys[SUBSYSTEM_SIZE];
+ struct list_head node;
+ char path[PATH_SIZE];
};
/* sort files in lexical order */
-static int device_list_insert(const char *path, char *subsystem, struct list_head *device_list)
+static int device_list_insert(const char *path, struct list_head *device_list)
{
struct device *loop_device;
struct device *new_device;
+ const char *devpath = &path[strlen(sysfs_path)];
- dbg("insert: '%s'\n", path);
+ dbg("insert: '%s'\n", devpath);
- list_for_each_entry(loop_device, device_list, list) {
- if (strcmp(loop_device->path, path) > 0) {
+ list_for_each_entry(loop_device, device_list, node) {
+ if (strcmp(loop_device->path, devpath) > 0) {
break;
}
}
return -ENOMEM;
}
- 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);
+ strlcpy(new_device->path, devpath, sizeof(new_device->path));
+ list_add_tail(&new_device->node, &loop_device->node);
+ dbg("add '%s'" , new_device->path);
return 0;
}
/* 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... */
+ "/class/mem",
+ "/class/tty",
NULL,
};
-static int add_device(const char *path, const char *subsystem)
+static int add_device(const char *devpath)
{
- struct udevice udev;
- struct sysfs_class_device *class_dev;
- const char *devpath;
-
- devpath = &path[strlen(sysfs_path)];
-
- /* set environment for callouts and dev.d/ */
- setenv("DEVPATH", devpath, 1);
- setenv("SUBSYSTEM", subsystem, 1);
+ struct sysfs_device *dev;
+ struct udevice *udev;
+ int retval = 0;
- dbg("exec: '%s' (%s)\n", devpath, path);
-
- class_dev = sysfs_open_class_device_path(path);
- if (class_dev == NULL) {
- dbg ("sysfs_open_class_device_path failed");
- return -ENODEV;
+ /* clear and set environment for next event */
+ clearenv();
+ setenv("ACTION", "add", 1);
+ setenv("UDEV_START", "1", 1);
+ if (udev_log_str)
+ setenv("UDEV_LOG", udev_log_str, 1);
+ if (udev_run_str)
+ setenv("UDEV_RUN", udev_run_str, 1);
+
+ dev = sysfs_device_get(devpath);
+ if (dev == NULL)
+ return -1;
+
+ udev = udev_device_init();
+ if (udev == NULL)
+ return -1;
+
+ /* override built-in sysfs device */
+ udev->dev = dev;
+ strcpy(udev->action, "add");
+
+ if (strcmp(udev->dev->subsystem, "net") != 0) {
+ udev->devt = udev_device_get_devt(udev);
+ if (major(udev->devt) == 0)
+ return -1;
}
- udev_init_device(&udev, devpath, subsystem);
- udev_add_device(&udev, class_dev);
+ dbg("add '%s'", udev->dev->devpath);
+ setenv("DEVPATH", udev->dev->devpath, 1);
+ setenv("SUBSYSTEM", udev->dev->subsystem, 1);
- /* run dev.d/ scripts if we created a node or changed a netif name */
- if (udev_dev_d && udev.devname[0] != '\0') {
- setenv("DEVNAME", udev.devname, 1);
- udev_multiplex_directory(&udev, DEVD_DIR, DEVD_SUFFIX);
+ udev_rules_get_name(&rules, udev);
+ if (udev->ignore_device) {
+ dbg("device event will be ignored");
+ goto exit;
+ }
+ if (udev->name[0] != '\0')
+ retval = udev_device_event(&rules, udev);
+ else
+ info("device node creation supressed");
+
+ if (retval == 0 && udev_run) {
+ struct name_entry *name_loop;
+
+ dbg("executing run list");
+ list_for_each_entry(name_loop, &udev->run_list, node) {
+ if (strncmp(name_loop->name, "socket:", strlen("socket:")) == 0)
+ pass_env_to_socket(&name_loop->name[strlen("socket:")], udev->dev->devpath, "add");
+ else {
+ char program[PATH_SIZE];
+
+ strlcpy(program, name_loop->name, sizeof(program));
+ udev_rules_apply_format(udev, program, sizeof(program));
+ run_program(program, udev->dev->subsystem, NULL, 0, NULL, (udev_log_priority >= LOG_INFO));
+ }
+ }
}
- sysfs_close_class_device(class_dev);
- udev_cleanup_device(&udev);
-
+exit:
+ udev_device_cleanup(udev);
return 0;
}
int i;
/* handle the "first" type devices first */
- list_for_each_entry_safe(loop_device, tmp_device, device_list, list) {
+ list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
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);
- list_del(&loop_device->list);
+ add_device(loop_device->path);
+ list_del(&loop_device->node);
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) {
+ list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
int found = 0;
for (i = 0; last_list[i] != NULL; i++) {
if (strncmp(loop_device->path, last_list[i], strlen(last_list[i])) == 0) {
if (found)
continue;
- add_device(loop_device->path, loop_device->subsys);
- list_del(&loop_device->list);
+ add_device(loop_device->path);
+ list_del(&loop_device->node);
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) {
- add_device(loop_device->path, loop_device->subsys);
- list_del(&loop_device->list);
+ list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
+ add_device(loop_device->path);
+ list_del(&loop_device->node);
free(loop_device);
}
}
-static int has_devt(const char *directory)
+static int has_devt(const char *path)
{
- char filename[NAME_SIZE];
+ char filename[PATH_SIZE];
struct stat statbuf;
- snprintf(filename, NAME_SIZE, "%s/dev", directory);
- filename[NAME_SIZE-1] = '\0';
+ snprintf(filename, sizeof(filename), "%s/dev", path);
+ filename[sizeof(filename)-1] = '\0';
if (stat(filename, &statbuf) == 0)
return 1;
return 0;
}
-static void udev_scan_block(void)
+static void udev_scan_block(struct list_head *device_list)
{
- char base[NAME_SIZE];
+ char base[PATH_SIZE];
DIR *dir;
struct dirent *dent;
- LIST_HEAD(device_list);
- snprintf(base, DEVPATH_SIZE, "%s/block", sysfs_path);
- base[DEVPATH_SIZE-1] = '\0';
+ snprintf(base, sizeof(base), "%s/block", sysfs_path);
+ base[sizeof(base)-1] = '\0';
dir = opendir(base);
if (dir != NULL) {
for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- char dirname[DEVPATH_SIZE];
+ char dirname[PATH_SIZE];
DIR *dir2;
struct dirent *dent2;
if (dent->d_name[0] == '.')
continue;
- snprintf(dirname, NAME_SIZE, "%s/%s", base, dent->d_name);
- dirname[NAME_SIZE-1] = '\0';
+ snprintf(dirname, sizeof(dirname), "%s/%s", base, dent->d_name);
+ dirname[sizeof(dirname)-1] = '\0';
if (has_devt(dirname))
- device_list_insert(dirname, "block", &device_list);
+ device_list_insert(dirname, device_list);
else
continue;
dir2 = opendir(dirname);
if (dir2 != NULL) {
for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
- char dirname2[DEVPATH_SIZE];
+ char dirname2[PATH_SIZE];
if (dent2->d_name[0] == '.')
continue;
- snprintf(dirname2, DEVPATH_SIZE, "%s/%s", dirname, dent2->d_name);
- dirname2[DEVPATH_SIZE-1] = '\0';
+ snprintf(dirname2, sizeof(dirname2), "%s/%s", dirname, dent2->d_name);
+ dirname2[sizeof(dirname2)-1] = '\0';
if (has_devt(dirname2))
- device_list_insert(dirname2, "block", &device_list);
+ device_list_insert(dirname2, device_list);
}
closedir(dir2);
}
}
closedir(dir);
}
- exec_list(&device_list);
}
-static void udev_scan_class(void)
+static void udev_scan_class(struct list_head *device_list)
{
- char base[DEVPATH_SIZE];
+ char base[PATH_SIZE];
DIR *dir;
struct dirent *dent;
- LIST_HEAD(device_list);
- snprintf(base, DEVPATH_SIZE, "%s/class", sysfs_path);
- base[DEVPATH_SIZE-1] = '\0';
+ snprintf(base, sizeof(base), "%s/class", sysfs_path);
+ base[sizeof(base)-1] = '\0';
dir = opendir(base);
if (dir != NULL) {
for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- char dirname[DEVPATH_SIZE];
+ char dirname[PATH_SIZE];
DIR *dir2;
struct dirent *dent2;
if (dent->d_name[0] == '.')
continue;
- snprintf(dirname, DEVPATH_SIZE, "%s/%s", base, dent->d_name);
- dirname[DEVPATH_SIZE-1] = '\0';
+ snprintf(dirname, sizeof(dirname), "%s/%s", base, dent->d_name);
+ dirname[sizeof(dirname)-1] = '\0';
dir2 = opendir(dirname);
if (dir2 != NULL) {
for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
- char dirname2[DEVPATH_SIZE];
+ char dirname2[PATH_SIZE];
if (dent2->d_name[0] == '.')
continue;
- snprintf(dirname2, DEVPATH_SIZE, "%s/%s", dirname, dent2->d_name);
- dirname2[DEVPATH_SIZE-1] = '\0';
+ snprintf(dirname2, sizeof(dirname2), "%s/%s", dirname, dent2->d_name);
+ dirname2[sizeof(dirname2)-1] = '\0';
- /* pass the net class as it is */
- if (strcmp(dent->d_name, "net") == 0)
- device_list_insert(dirname2, "net", &device_list);
- else if (has_devt(dirname2))
- device_list_insert(dirname2, dent->d_name, &device_list);
+ if (has_devt(dirname2) || strcmp(dent->d_name, "net") == 0)
+ device_list_insert(dirname2, device_list);
}
closedir(dir2);
}
}
closedir(dir);
}
- exec_list(&device_list);
}
static void asmlinkage sig_handler(int signum)
int main(int argc, char *argv[], char *envp[])
{
+ LIST_HEAD(device_list);
struct sigaction act;
- udev_init_config();
+ logging_init("udevstart");
+ udev_config_init();
+ dbg("version %s", UDEV_VERSION);
+
+ udev_run_str = getenv("UDEV_RUN");
+ udev_log_str = getenv("UDEV_LOG");
+
+ /* disable all logging if not explicitely requested */
+ if (udev_log_str == NULL)
+ udev_log_priority = 0;
/* set signal handlers */
memset(&act, 0x00, sizeof(act));
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);
+ alarm(UDEV_ALARM_TIMEOUT);
- namedev_init();
+ sysfs_init();
+ udev_rules_init(&rules, 1);
- udev_scan_block();
- udev_scan_class();
+ udev_scan_class(&device_list);
+ udev_scan_block(&device_list);
+ exec_list(&device_list);
+ udev_rules_cleanup(&rules);
+ sysfs_cleanup();
+ logging_close();
return 0;
}
~ianmdlvl / elogind.git / blobdiff