2 * Copyright (c) 2010 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Alex Hornung <ahornung@gmail.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/types.h>
35 #include <sys/device.h>
37 #include <sys/socket.h>
38 #include <sys/ioctl.h>
40 #include <sys/queue.h>
42 #include <cpu/inttypes.h>
58 #include <libprop/proplib.h>
60 #define LIBDEVATTR_INTERNAL
72 udev_ref(struct udev *udev_ctx)
74 atomic_add_int(&udev_ctx->refs, 1);
80 udev_unref(struct udev *udev_ctx)
84 refcount = atomic_fetchadd_int(&udev_ctx->refs, -1);
87 atomic_subtract_int(&udev_ctx->refs, 0x400); /* in destruction */
88 if (udev_ctx->gp_fd != -1)
89 close (udev_ctx->gp_fd);
90 if (udev_ctx->monitor_fd != -1)
91 close (udev_ctx->monitor_fd);
100 struct udev *udev_ctx;
103 ret = conn_local_server(LISTEN_SOCKET_FILE, SOCK_STREAM, 0, &s);
107 udev_ctx = malloc(sizeof(struct udev));
111 udev_ctx->monitor_fd = -1;
112 udev_ctx->userdata = NULL;
117 const char *udev_get_dev_path(struct udev *udev_ctx __unused)
123 udev_get_userdata(struct udev *udev_ctx)
125 return udev_ctx->userdata;
129 udev_set_userdata(struct udev *udev_ctx, void *userdata)
131 udev_ctx->userdata = userdata;
135 udev_get_fd(struct udev *udev_ctx)
137 return udev_ctx->gp_fd;
141 send_xml(int s, char *xml)
146 sz = strlen(xml) + 1;
148 r = send(s, &sz, sizeof(sz), 0);
153 while (r < (ssize_t)sz) {
154 n = send(s, xml+r, sz-r, 0);
164 read_xml(int s, char **buf)
172 n = recv(s, &sz, sizeof(sz), MSG_WAITALL);
173 if ((n <= 0) || (sz > 12*1024*1024)) /* Arbitrary limit */
178 while (r < (ssize_t)sz) {
179 n = recv(s, xml+r, sz-r, MSG_WAITALL);
192 _udev_dict_set_cstr(prop_dictionary_t dict, const char *key, char *str)
196 ps = prop_string_create_cstring(str);
200 if (prop_dictionary_set(dict, key, ps) == false) {
201 prop_object_release(ps);
205 prop_object_release(ps);
210 _udev_dict_set_int(prop_dictionary_t dict, const char *key, int64_t val)
214 pn = prop_number_create_integer(val);
218 if (prop_dictionary_set(dict, key, pn) == false) {
219 prop_object_release(pn);
223 prop_object_release(pn);
228 _udev_dict_set_uint(prop_dictionary_t dict, const char *key, uint64_t val)
232 pn = prop_number_create_unsigned_integer(val);
236 if (prop_dictionary_set(dict, key, pn) == false) {
237 prop_object_release(pn);
241 prop_object_release(pn);
246 conn_local_server(const char *sockfile, int socktype, int nonblock __unused,
250 struct sockaddr_un serv_addr;
253 if ((s = socket(AF_UNIX, socktype, 0)) < 0)
256 memset(&serv_addr, 0, sizeof(serv_addr));
257 serv_addr.sun_family = AF_UNIX;
258 strncpy(serv_addr.sun_path, sockfile, SOCKFILE_NAMELEN);
259 serv_addr.sun_path[SOCKFILE_NAMELEN - 1] = '\0';
262 return connect(s, (struct sockaddr *)&serv_addr, sizeof(serv_addr));
266 udevd_get_command_dict(char *command)
268 prop_dictionary_t dict;
271 dict = prop_dictionary_create();
275 if ((error = _udev_dict_set_cstr(dict, "command", command)))
281 prop_object_release(dict);
286 udevd_request_devs(int s, prop_array_t filters)
289 prop_dictionary_t dict;
294 dict = udevd_get_command_dict(__DECONST(char *, "getdevs"));
298 /* Add filters to message, if available */
299 if (filters != NULL) {
300 if (prop_dictionary_set(dict, "filters", filters) == false) {
301 prop_object_release(dict);
306 xml = prop_dictionary_externalize(dict);
307 prop_object_release(dict);
311 n = send_xml(s, xml);
317 if ((n = read_xml(s, &xml)) <= 0)
321 pa = prop_array_internalize(xml);