2 * $Id: ud_socket.c,v 1.6 2009/04/22 18:22:28 thockin Exp $
3 * A few routines for handling UNIX domain sockets
15 #include <sys/types.h>
17 #include <sys/socket.h>
23 #include "ud_socket.h"
26 ud_create_socket(const char *name, mode_t socketmode)
30 struct sockaddr_un uds_addr;
32 if (strnlen(name, sizeof(uds_addr.sun_path)) >
33 sizeof(uds_addr.sun_path) - 1) {
34 acpid_log(LOG_ERR, "ud_create_socket(): "
35 "socket filename longer than %zu characters: %s",
36 sizeof(uds_addr.sun_path) - 1, name);
44 fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0);
49 /* Clear the umask to guarantee predictable results from fchmod(). */
52 if (fchmod(fd, socketmode) < 0) {
54 acpid_log(LOG_ERR, "fchmod() on socket %s: %s",
55 name, strerror(errno));
59 /* setup address struct */
60 memset(&uds_addr, 0, sizeof(uds_addr));
61 uds_addr.sun_family = AF_UNIX;
62 strncpy(uds_addr.sun_path, name, sizeof(uds_addr.sun_path) - 1);
64 /* bind it to the socket */
65 r = bind(fd, (struct sockaddr *)&uds_addr, sizeof(uds_addr));
71 /* listen - allow 10 to queue */
82 ud_accept(int listenfd, struct ucred *cred)
86 struct sockaddr_un cliaddr;
87 socklen_t len = sizeof(struct sockaddr_un);
89 newsock = TEMP_FAILURE_RETRY (accept4(listenfd, (struct sockaddr *)&cliaddr, &len, SOCK_CLOEXEC|SOCK_NONBLOCK));
94 len = sizeof(struct ucred);
95 getsockopt(newsock,SOL_SOCKET,SO_PEERCRED,cred,&len);
103 ud_connect(const char *name)
107 struct sockaddr_un addr;
109 if (strnlen(name, sizeof(addr.sun_path)) > sizeof(addr.sun_path) - 1) {
110 acpid_log(LOG_ERR, "ud_connect(): "
111 "socket filename longer than %zu characters: %s",
112 sizeof(addr.sun_path) - 1, name);
117 fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
122 memset(&addr, 0, sizeof(addr));
123 addr.sun_family = AF_UNIX;
124 sprintf(addr.sun_path, "%s", name);
126 /*strncpy(addr.sun_path, name, sizeof(addr.sun_path) - 1);*/
128 r = connect(fd, (struct sockaddr *)&addr, sizeof(addr));
138 ud_get_peercred(int fd, struct ucred *cred)
140 socklen_t len = sizeof(struct ucred);
141 getsockopt(fd, SOL_SOCKET, SO_PEERCRED, cred, &len);