e964c2c05d
Here we truncate our input strings from the environment to our defined limit. It's a bit theroretical but better check for it. It cleans up some magic length definitions and removes the code duplication in udev, udevtest and udevsend. udevd needs to be killed after installation, cause the message size is changed with this patch. Should we do this with the 'make install', like we do with the '.udevdb'?
144 lines
2.8 KiB
C
144 lines
2.8 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) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
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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 <errno.h>
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#include <ctype.h>
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#include <signal.h>
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#include "libsysfs/sysfs/libsysfs.h"
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#include "udev.h"
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#include "udev_version.h"
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#include "logging.h"
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#include "namedev.h"
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/* global variables */
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char **main_argv;
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char **main_envp;
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#ifdef LOG
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unsigned char logname[42];
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void log_message (int level, const char *format, ...)
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{
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va_list args;
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// if (!udev_log)
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// return;
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/* FIXME use level... */
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va_start(args, format);
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vprintf(format, args);
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va_end(args);
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if (format[strlen(format)-1] != '\n')
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printf("\n");
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}
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#endif
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static void sig_handler(int signum)
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{
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switch (signum) {
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case SIGINT:
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case SIGTERM:
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exit(20 + signum);
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default:
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dbg("unhandled signal");
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}
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}
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static char *subsystem_blacklist[] = {
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"net",
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"scsi_host",
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"scsi_device",
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"usb_host",
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"pci_bus",
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"",
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};
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static int udev_hotplug(int argc, char **argv)
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{
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char *devpath;
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char *subsystem;
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int retval = -EINVAL;
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int i;
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struct sigaction act;
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devpath = argv[1];
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if (!devpath) {
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dbg("no devpath?");
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goto exit;
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}
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dbg("looking at '%s'", devpath);
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/* we only care about class devices and block stuff */
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if (!strstr(devpath, "class") &&
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!strstr(devpath, "block")) {
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dbg("not a block or class device");
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goto exit;
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}
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/* skip blacklisted subsystems */
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subsystem = argv[1];
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i = 0;
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while (subsystem_blacklist[i][0] != '\0') {
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if (strcmp(subsystem, subsystem_blacklist[i]) == 0) {
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dbg("don't care about '%s' devices", subsystem);
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goto exit;
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}
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i++;
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}
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/* initialize our configuration */
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udev_init_config();
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/* set up a default signal handler for now */
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act.sa_handler = sig_handler;
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sigemptyset (&act.sa_mask);
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act.sa_flags = SA_RESTART;
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sigaction(SIGINT, &act, NULL);
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sigaction(SIGTERM, &act, NULL);
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/* initialize the naming deamon */
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namedev_init();
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retval = udev_add_device(devpath, subsystem, 1);
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exit:
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if (retval > 0)
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retval = 0;
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return -retval;
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}
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int main(int argc, char **argv, char **envp)
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{
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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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return udev_hotplug(argc, argv);
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}
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