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git.ipfire.org Git - thirdparty/systemd.git/blob - udev_multiplex.c
2 * udev_multiplex.c directory 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>
31 #include "udev_libc_wrapper.h"
32 #include "udev_utils.h"
37 * runs files in these directories in order:
38 * <node name given by udev>/
42 void udev_multiplex_directory(struct udevice
*udev
, const char *basedir
, const char *suffix
)
44 char dirname
[PATH_SIZE
];
45 struct name_entry
*name_loop
, *name_tmp
;
48 /* chop the device name up into pieces based on '/' */
49 if (udev
->name
[0] != '\0') {
50 char devname
[PATH_SIZE
];
53 strlcpy(devname
, udev
->name
, sizeof(devname
));
54 temp
= strchr(devname
, '/');
55 while (temp
!= NULL
) {
58 /* don't call the subsystem directory here */
59 if (strcmp(devname
, udev
->subsystem
) != 0) {
60 snprintf(dirname
, sizeof(dirname
), "%s/%s", basedir
, devname
);
61 dirname
[sizeof(dirname
)-1] = '\0';
62 add_matching_files(&name_list
, dirname
, suffix
);
67 temp
= strchr(temp
, '/');
71 if (udev
->name
[0] != '\0') {
72 snprintf(dirname
, sizeof(dirname
), "%s/%s", basedir
, udev
->name
);
73 dirname
[sizeof(dirname
)-1] = '\0';
74 add_matching_files(&name_list
, dirname
, suffix
);
77 if (udev
->subsystem
[0] != '\0') {
78 snprintf(dirname
, sizeof(dirname
), "%s/%s", basedir
, udev
->subsystem
);
79 dirname
[sizeof(dirname
)-1] = '\0';
80 add_matching_files(&name_list
, dirname
, suffix
);
83 snprintf(dirname
, sizeof(dirname
), "%s/default", basedir
);
84 dirname
[sizeof(dirname
)-1] = '\0';
85 add_matching_files(&name_list
, dirname
, suffix
);
87 list_for_each_entry_safe(name_loop
, name_tmp
, &name_list
, node
) {
88 execute_command(name_loop
->name
, udev
->subsystem
);
89 list_del(&name_loop
->node
);