2 * dev_d.c - dev.d/ multiplexer
4 * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation version 2 of the License.
12 * This essentially emulates the following shell script logic in C:
14 * export DEVNAME="whatever_dev_name_udev_just_gave"
15 * for I in "${DIR}/$DEVNAME/"*.dev "${DIR}/$1/"*.dev "${DIR}/default/"*.dev ; do
16 * if [ -f $I ]; then $I $1 ; fi
24 #include <sys/types.h>
35 #define DEVD_DIR "/etc/dev.d/"
36 #define DEVD_SUFFIX ".dev"
38 static int run_program(char *name)
44 dbg("running %s", name);
50 udevdb_exit(); /* close udevdb */
51 fd = open("/dev/null", O_RDWR);
53 dup2(fd, STDOUT_FILENO);
54 dup2(fd, STDIN_FILENO);
55 dup2(fd, STDERR_FILENO);
60 argv[1] = main_argv[1];
64 dbg("exec of child failed");
67 dbg("fork of child failed");
78 * runs files in these directories in order:
79 * <node name given by udev>/
83 void dev_d_send(struct udevice *dev, const char *subsystem, const char *devpath)
86 char env_devname[NAME_SIZE];
93 memset(env_devname, 0x00, sizeof(env_devname));
94 if (dev->type == 'b' || dev->type == 'c') {
95 strfieldcpy(env_devname, udev_root);
96 strfieldcat(env_devname, dev->name);
97 } else if (dev->type == 'n') {
98 strfieldcpy(env_devname, dev->name);
101 setenv("DEVPATH", devpath, 1);
102 setenv("DEVNAME", env_devname, 1);
103 dbg("DEVNAME='%s'", env_devname);
105 devname = strdup(dev->name);
107 dbg("out of memory");
111 /* Chop the device name up into pieces based on '/' */
112 temp = strchr(devname, '/');
113 while (temp != NULL) {
115 strcpy(dirname, DEVD_DIR);
116 strfieldcat(dirname, devname);
117 call_foreach_file(run_program, dirname, DEVD_SUFFIX);
121 temp = strchr(temp, '/');
124 strcpy(dirname, DEVD_DIR);
125 strfieldcat(dirname, dev->name);
126 call_foreach_file(run_program, dirname, DEVD_SUFFIX);
128 strcpy(dirname, DEVD_DIR);
129 strfieldcat(dirname, subsystem);
130 call_foreach_file(run_program, dirname, DEVD_SUFFIX);
132 strcpy(dirname, DEVD_DIR "default");
133 call_foreach_file(run_program, dirname, DEVD_SUFFIX);