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-rw-r--r--dev_d.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/dev_d.c b/dev_d.c
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+++ b/dev_d.c
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+/*
+ * dev.d multipleer
+ *
+ * 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;
+ */
+
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include "udev.h"
+#include "udev_lib.h"
+#include "logging.h"
+
+#define HOTPLUGDIR "/etc/dev.d"
+#define COMMENT_PREFIX '#'
+
+static void run_program(char *name)
+{
+ pid_t pid;
+
+ dbg("running %s", name);
+
+ pid = fork();
+
+ if (pid < 0) {
+ perror("fork");
+ return;
+ }
+
+ if (pid > 0) {
+ wait(NULL);
+ return;
+ }
+
+ execv(name, main_argv);
+ exit(1);
+}
+
+static void execute_dir (char *dirname)
+{
+ DIR *directory;
+ struct dirent *entry;
+ char filename[256];
+
+ dbg("opening %s", dirname);
+ directory = opendir(dirname);
+ if (!directory)
+ 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;
+
+ /* 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);
+ }
+
+ 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];
+
+ strfieldcpy(devnode, udev_root);
+ strfieldcat(devnode, dev->name);
+ setenv("DEVNODE", devnode, 1);
+
+ snprintf(dirname, sizeof(dirname), HOTPLUGDIR "/%s/", dev->name);
+ dirname[sizeof(dirname)-1] = '\0';
+ execute_dir(dirname);
+
+ snprintf(dirname, sizeof(dirname), HOTPLUGDIR "/%s/", subsystem);
+ dirname[sizeof(dirname)-1] = '\0';
+ execute_dir(dirname);
+
+ strcpy(dirname, HOTPLUGDIR "/default/");
+ execute_dir(dirname);
+}
+