1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* 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);
}
|
