chiark / gitweb /
volume_id: move some debug to info level
[elogind.git] / udev_utils.c
1 /*
2  * udev_utils.c - generic stuff used by udev
3  *
4  * Copyright (C) 2004-2005 Kay Sievers <kay.sievers@vrfy.org>
5  *
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.
9  * 
10  *      This program is distributed in the hope that it will be useful, but
11  *      WITHOUT ANY WARRANTY; without even the implied warranty of
12  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  *      General Public License for more details.
14  * 
15  *      You should have received a copy of the GNU General Public License along
16  *      with this program; if not, write to the Free Software Foundation, Inc.,
17  *      675 Mass Ave, Cambridge, MA 02139, USA.
18  *
19  */
20
21
22 #include <stdlib.h>
23 #include <stdio.h>
24 #include <stddef.h>
25 #include <unistd.h>
26 #include <fcntl.h>
27 #include <errno.h>
28 #include <ctype.h>
29 #include <dirent.h>
30 #include <syslog.h>
31 #include <sys/utsname.h>
32
33 #include "udev.h"
34
35
36 int log_priority(const char *priority)
37 {
38         char *endptr;
39         int prio;
40
41         prio = strtol(priority, &endptr, 10);
42         if (endptr[0] == '\0')
43                 return prio;
44         if (strncasecmp(priority, "err", 3) == 0)
45                 return LOG_ERR;
46         if (strcasecmp(priority, "info") == 0)
47                 return LOG_INFO;
48         if (strcasecmp(priority, "debug") == 0)
49                 return LOG_DEBUG;
50         if (string_is_true(priority))
51                 return LOG_ERR;
52
53         return 0;
54 }
55
56 int name_list_add(struct list_head *name_list, const char *name, int sort)
57 {
58         struct name_entry *loop_name;
59         struct name_entry *new_name;
60
61         list_for_each_entry(loop_name, name_list, node) {
62                 /* avoid doubles */
63                 if (strcmp(loop_name->name, name) == 0) {
64                         dbg("'%s' is already in the list", name);
65                         return 0;
66                 }
67         }
68
69         if (sort)
70                 list_for_each_entry(loop_name, name_list, node) {
71                         if (sort && strcmp(loop_name->name, name) > 0)
72                                 break;
73                 }
74
75         new_name = malloc(sizeof(struct name_entry));
76         if (new_name == NULL) {
77                 dbg("error malloc");
78                 return -ENOMEM;
79         }
80
81         strlcpy(new_name->name, name, sizeof(new_name->name));
82         dbg("adding '%s'", new_name->name);
83         list_add_tail(&new_name->node, &loop_name->node);
84
85         return 0;
86 }
87
88 int name_list_key_add(struct list_head *name_list, const char *key, const char *value)
89 {
90         struct name_entry *loop_name;
91         struct name_entry *new_name;
92
93         list_for_each_entry(loop_name, name_list, node) {
94                 if (strncmp(loop_name->name, key, strlen(key)) == 0) {
95                         dbg("key already present '%s', replace it", loop_name->name);
96                         snprintf(loop_name->name, sizeof(loop_name->name), "%s=%s", key, value);
97                         loop_name->name[sizeof(loop_name->name)-1] = '\0';
98                         return 0;
99                 }
100         }
101
102         new_name = malloc(sizeof(struct name_entry));
103         if (new_name == NULL) {
104                 dbg("error malloc");
105                 return -ENOMEM;
106         }
107
108         snprintf(new_name->name, sizeof(new_name->name), "%s=%s", key, value);
109         new_name->name[sizeof(new_name->name)-1] = '\0';
110         dbg("adding '%s'", new_name->name);
111         list_add_tail(&new_name->node, &loop_name->node);
112
113         return 0;
114 }
115
116 void name_list_cleanup(struct list_head *name_list)
117 {
118         struct name_entry *name_loop;
119         struct name_entry *temp_loop;
120
121         list_for_each_entry_safe(name_loop, temp_loop, name_list, node) {
122                 list_del(&name_loop->node);
123                 free(name_loop);
124         }
125 }
126
127 /* calls function for every file found in specified directory */
128 int add_matching_files(struct list_head *name_list, const char *dirname, const char *suffix)
129 {
130         struct dirent *ent;
131         DIR *dir;
132         char *ext;
133         char filename[PATH_SIZE];
134
135         dbg("open directory '%s'", dirname);
136         dir = opendir(dirname);
137         if (dir == NULL) {
138                 err("unable to open '%s': %s", dirname, strerror(errno));
139                 return -1;
140         }
141
142         while (1) {
143                 ent = readdir(dir);
144                 if (ent == NULL || ent->d_name[0] == '\0')
145                         break;
146
147                 if ((ent->d_name[0] == '.') || (ent->d_name[0] == COMMENT_CHARACTER))
148                         continue;
149
150                 /* look for file matching with specified suffix */
151                 ext = strrchr(ent->d_name, '.');
152                 if (ext == NULL)
153                         continue;
154
155                 if (strcmp(ext, suffix) != 0)
156                         continue;
157
158                 dbg("put file '%s/%s' in list", dirname, ent->d_name);
159
160                 snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
161                 filename[sizeof(filename)-1] = '\0';
162                 name_list_add(name_list, filename, 1);
163         }
164
165         closedir(dir);
166         return 0;
167 }