129 lines
2.4 KiB
C
129 lines
2.4 KiB
C
/*
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* udev.c
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*
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* Userspace devfs
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*
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* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
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*
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include "udev.h"
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#include "udev_version.h"
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#include "namedev.h"
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#include "udevdb.h"
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#include "libsysfs/libsysfs.h"
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static char *get_action(void)
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{
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char *action;
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action = getenv("ACTION");
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return action;
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}
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static char *get_device(void)
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{
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char *device;
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device = getenv("DEVPATH");
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return device;
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}
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char **main_argv;
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char **main_envp;
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int main(int argc, char **argv, char **envp)
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{
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char *action;
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char *device;
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char *subsystem;
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int retval = -EINVAL;
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main_argv = argv;
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main_envp = envp;
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dbg("version %s", UDEV_VERSION);
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if (argc != 2) {
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dbg ("unknown number of arguments");
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goto exit;
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}
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subsystem = argv[1];
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device = get_device();
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if (!device) {
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dbg ("no device?");
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goto exit;
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}
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dbg("looking at %s", device);
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/* we only care about class devices and block stuff */
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if (!strstr(device, "class") &&
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!strstr(device, "block")) {
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dbg("not block or class");
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goto exit;
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}
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/* but we don't care about net class devices */
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if (strcmp(subsystem, "net") == 0) {
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dbg("don't care about net devices");
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goto exit;
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}
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action = get_action();
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if (!action) {
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dbg ("no action?");
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goto exit;
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}
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/* initialize udev database */
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retval = udevdb_init(UDEVDB_DEFAULT);
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if (retval != 0) {
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dbg("Unable to initialize database.");
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goto exit;
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}
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/* initialize the naming deamon */
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namedev_init();
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if (strcmp(action, "add") == 0)
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retval = udev_add_device(device, argv[1]);
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else if (strcmp(action, "remove") == 0)
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retval = udev_remove_device(device, argv[1]);
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else {
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dbg("Unknown action: %s", action);
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retval = -EINVAL;
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}
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udevdb_exit();
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exit:
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return retval;
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}
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