/*
- * dev.d multipleer
+ * dev_d.c - dev.d/ multiplexer
*
* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.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.
- *
- * Based on the klibc version of hotplug written by:
- * Author(s) Christian Borntraeger <cborntra@de.ibm.com>
- * which was based on the shell script written by:
- * Greg Kroah-Hartman <greg@kroah.com>
- *
*/
-/*
+/*
* This essentially emulates the following shell script logic in C:
- DIR="/etc/dev.d"
- export DEVNODE="whatever_dev_name_udev_just_gave"
- for I in "${DIR}/$DEVNODE/"*.dev "${DIR}/$1/"*.dev "${DIR}/default/"*.dev ; do
- if [ -f $I ]; then $I $1 ; fi
- done
- exit 1;
+ * DIR="/etc/dev.d"
+ * export DEVNAME="whatever_dev_name_udev_just_gave"
+ * for I in "${DIR}/$DEVNAME/"*.dev "${DIR}/$1/"*.dev "${DIR}/default/"*.dev ; do
+ * if [ -f $I ]; then $I $1 ; fi
+ * done
+ * exit 1;
*/
-#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "udev_lib.h"
#include "logging.h"
-#define HOTPLUGDIR "/etc/dev.d"
-#define SUFFIX ".dev"
-#define COMMENT_PREFIX '#'
+#define DEVD_DIR "/etc/dev.d/"
+#define DEVD_SUFFIX ".dev"
-static void run_program(char *name)
+static int run_program(char *name)
{
pid_t pid;
dbg("running %s", name);
pid = fork();
-
- if (pid < 0) {
- perror("fork");
- return;
- }
-
- if (pid > 0) {
+ switch (pid) {
+ case 0:
+ /* child */
+ execv(name, main_argv);
+ dbg("exec of child failed");
+ exit(1);
+ case -1:
+ dbg("fork of child failed");
+ break;
+ return -1;
+ default:
wait(NULL);
- return;
}
- execv(name, main_argv);
- exit(1);
+ return 0;
}
-static void execute_dir (char *dirname)
+/*
+ * runs files in these directories in order:
+ * <node name given by udev>/
+ * subsystem/
+ * default/
+ */
+void dev_d_send(struct udevice *dev, const char *subsystem, const char *devpath)
{
- DIR *directory;
- struct dirent *entry;
- char filename[NAME_SIZE];
- int name_len;
-
- dbg("opening %s", dirname);
- directory = opendir(dirname);
- if (!directory)
+ char dirname[256];
+ char env_devname[NAME_SIZE];
+ char *devname;
+ char *temp;
+
+ if (udev_dev_d == 0)
return;
- while ((entry = readdir(directory))) {
- if (entry->d_name[0] == '\0')
- break;
- /* Don't run the files '.', '..', or hidden files,
- * or files that start with a '#' */
- if ((entry->d_name[0] == '.') ||
- (entry->d_name[0] == COMMENT_PREFIX))
- continue;
-
- /* Nor do we run files that do not end in ".dev" */
- name_len = strlen(entry->d_name);
- if (name_len < strlen(SUFFIX))
- continue;
- if (strcmp(&entry->d_name[name_len - sizeof (SUFFIX) + 1], SUFFIX) != 0)
- continue;
-
- /* FIXME - need to use file_list_insert() here to run these in sorted order... */
- snprintf(filename, sizeof(filename), "%s%s", dirname, entry->d_name);
- filename[sizeof(filename)-1] = '\0';
- run_program(filename);
+ if (dev->type == 'b' || dev->type == 'c') {
+ strfieldcpy(env_devname, udev_root);
+ strfieldcat(env_devname, dev->name);
+ } else if (dev->type == 'n') {
+ strfieldcpy(env_devname, dev->name);
+ setenv("DEVPATH", devpath, 1);
}
+ setenv("DEVNAME", env_devname, 1);
+ dbg("DEVNAME='%s'", env_devname);
- closedir(directory);
-}
-
-/* runs files in these directories in order:
- * name given by udev
- * subsystem
- * default
- */
-void dev_d_send(struct udevice *dev, char *subsystem)
-{
- char dirname[256];
- char devnode[NAME_SIZE];
+ devname = strdup(dev->name);
+ if (!devname) {
+ dbg("out of memory");
+ return;
+ }
- strfieldcpy(devnode, udev_root);
- strfieldcat(devnode, dev->name);
- setenv("DEVNODE", devnode, 1);
+ /* Chop the device name up into pieces based on '/' */
+ temp = strchr(devname, '/');
+ while (temp != NULL) {
+ *temp = 0x00;
+ strcpy(dirname, DEVD_DIR);
+ strfieldcat(dirname, devname);
+ call_foreach_file(run_program, dirname, DEVD_SUFFIX);
+
+ *temp = '/';
+ ++temp;
+ temp = strchr(temp, '/');
+ }
- snprintf(dirname, sizeof(dirname), HOTPLUGDIR "/%s/", dev->name);
- dirname[sizeof(dirname)-1] = '\0';
- execute_dir(dirname);
+ strcpy(dirname, DEVD_DIR);
+ strfieldcat(dirname, dev->name);
+ call_foreach_file(run_program, dirname, DEVD_SUFFIX);
- snprintf(dirname, sizeof(dirname), HOTPLUGDIR "/%s/", subsystem);
- dirname[sizeof(dirname)-1] = '\0';
- execute_dir(dirname);
+ strcpy(dirname, DEVD_DIR);
+ strfieldcat(dirname, subsystem);
+ call_foreach_file(run_program, dirname, DEVD_SUFFIX);
- strcpy(dirname, HOTPLUGDIR "/default/");
- execute_dir(dirname);
+ strcpy(dirname, DEVD_DIR "default");
+ call_foreach_file(run_program, dirname, DEVD_SUFFIX);
}
-
~ianmdlvl / elogind.git / blobdiff