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-rw-r--r--udevstart.c300
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diff --git a/udevstart.c b/udevstart.c
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--- a/udevstart.c
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@@ -1,300 +0,0 @@
-/*
- * udevstart.c
- *
- * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
- *
- * 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>
- *
- * 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
- * Free Software Foundation version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <ctype.h>
-#include <dirent.h>
-#include <sys/wait.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "libsysfs/sysfs/libsysfs.h"
-#include "logging.h"
-#include "udev_lib.h"
-#include "list.h"
-#include "udev.h"
-
-
-#define MAX_PATHLEN 1024
-#define SYSBLOCK "/sys/block"
-#define SYSCLASS "/sys/class"
-
-struct device {
- struct list_head list;
- char path[MAX_PATHLEN];
- char subsys[MAX_PATHLEN];
-};
-
-/* sort files in lexical order */
-static int device_list_insert(char *path, char *subsystem, struct list_head *device_list)
-{
- struct device *loop_device;
- struct device *new_device;
-
- list_for_each_entry(loop_device, device_list, list) {
- if (strcmp(loop_device->path, path) > 0) {
- break;
- }
- }
-
- new_device = malloc(sizeof(struct device));
- if (new_device == NULL) {
- dbg("error malloc");
- 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);
- return 0;
-}
-
-/* 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 int add_device(char *devpath, char *subsystem)
-{
- struct udevice udev;
- char path[SYSFS_PATH_MAX];
- struct sysfs_class_device *class_dev;
-
- /* set environment for callouts and dev.d/ */
- setenv("DEVPATH", devpath, 1);
- setenv("SUBSYSTEM", subsystem, 1);
-
- snprintf(path, SYSFS_PATH_MAX, "%s%s", sysfs_path, devpath);
- path[SYSFS_PATH_MAX-1] = '\0';
- class_dev = sysfs_open_class_device_path(path);
- if (class_dev == NULL) {
- dbg ("sysfs_open_class_device_path failed");
- return -ENODEV;
- }
-
- udev_set_values(&udev, devpath, subsystem, "add");
- udev_add_device(&udev, class_dev);
-
- /* run dev.d/ scripts if we created a node or changed a netif name */
- if (udev.devname[0] != '\0') {
- setenv("DEVNAME", udev.devname, 1);
- dev_d_execute(&udev, DEVD_DIR, DEVD_SUFFIX);
- }
-
- sysfs_close_class_device(class_dev);
-
- return 0;
-}
-
-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);
- 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;
- for (i=0; last_list[i] != NULL; i++) {
- if (strncmp(loop_device->path, last_list[i], strlen(last_list[i])) == 0) {
- found = 1;
- break;
- }
- }
- if (found)
- continue;
-
- add_device(loop_device->path, loop_device->subsys);
- 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) {
- add_device(loop_device->path, loop_device->subsys);
- list_del(&loop_device->list);
- free(loop_device);
- }
-}
-
-static void udev_scan_block(void)
-{
- DIR *dir;
- struct dirent *dent;
- LIST_HEAD(device_list);
-
- dir = opendir(SYSBLOCK);
- if (dir != NULL) {
- for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- char dirname[MAX_PATHLEN];
- DIR *dir2;
- struct dirent *dent2;
-
- if ((strcmp(dent->d_name, ".") == 0) ||
- (strcmp(dent->d_name, "..") == 0))
- continue;
-
- snprintf(dirname, MAX_PATHLEN, "/block/%s", dent->d_name);
- dirname[MAX_PATHLEN-1] = '\0';
- device_list_insert(dirname, "block", &device_list);
-
- snprintf(dirname, MAX_PATHLEN, "%s/%s", SYSBLOCK, dent->d_name);
- dir2 = opendir(dirname);
- if (dir2 != NULL) {
- for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
- char dirname2[MAX_PATHLEN];
- DIR *dir3;
- struct dirent *dent3;
-
- if ((strcmp(dent2->d_name, ".") == 0) ||
- (strcmp(dent2->d_name, "..") == 0))
- 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];
-
- if (strcmp(dent3->d_name, "dev") == 0) {
- snprintf(filename, MAX_PATHLEN, "/block/%s/%s",
- dent->d_name, dent2->d_name);
- filename[MAX_PATHLEN-1] = '\0';
- device_list_insert(filename, "block", &device_list);
- }
- }
- closedir(dir3);
- }
- }
- closedir(dir2);
- }
- }
- closedir(dir);
- }
-
- exec_list(&device_list);
-}
-
-static void udev_scan_class(void)
-{
- DIR *dir;
- struct dirent *dent;
- LIST_HEAD(device_list);
-
- dir = opendir(SYSCLASS);
- if (dir != NULL) {
- for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- char dirname[MAX_PATHLEN];
- DIR *dir2;
- struct dirent *dent2;
-
- if ((strcmp(dent->d_name, ".") == 0) ||
- (strcmp(dent->d_name, "..") == 0))
- continue;
-
- snprintf(dirname, MAX_PATHLEN, "%s/%s", SYSCLASS, dent->d_name);
- dirname[MAX_PATHLEN-1] = '\0';
- dir2 = opendir(dirname);
- if (dir2 != NULL) {
- for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
- char dirname2[MAX_PATHLEN];
- DIR *dir3;
- struct dirent *dent3;
-
- if ((strcmp(dent2->d_name, ".") == 0) ||
- (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);
- }
- }
- closedir(dir2);
- }
- }
- closedir(dir);
- }
-
- exec_list(&device_list);
-}
-
-int udev_start(void)
-{
- /* set environment for callouts and dev.d/ */
- setenv("ACTION", "add", 1);
- setenv("UDEVSTART", "1", 1);
-
- udev_scan_class();
- udev_scan_block();
-
- return 0;
-}
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