27 #include "dbus-internals.h" 28 #include "dbus-sysdeps.h" 29 #include "dbus-sysdeps-unix.h" 30 #include "dbus-threads.h" 31 #include "dbus-protocol.h" 32 #include "dbus-file.h" 33 #include "dbus-transport.h" 34 #include "dbus-string.h" 35 #include "dbus-userdb.h" 36 #include "dbus-list.h" 37 #include "dbus-credentials.h" 38 #include "dbus-nonce.h" 40 #include <sys/types.h> 47 #include <sys/socket.h> 56 #include <netinet/in.h> 57 #include <netinet/tcp.h> 60 #include <arpa/inet.h> 62 #include <parsec/pdp.h> 63 #include <parsec/parsec_cap.h> 81 #ifdef HAVE_GETPEERUCRED 93 #include <systemd/sd-daemon.h> 104 #ifndef AI_ADDRCONFIG 105 #define AI_ADDRCONFIG 0 108 #ifndef HAVE_SOCKLEN_T 109 #define socklen_t int 112 #if defined (__sun) || defined (__sun__) 125 # define CMSG_ALIGN(len) _CMSG_DATA_ALIGN (len) 128 # define CMSG_ALIGN(len) (((len) + sizeof (long) - 1) & \ 129 ~(sizeof (long) - 1)) 134 # define CMSG_SPACE(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + \ 139 # define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len)) 160 const char **error_str_p)
162 static int const relevant_flag[] = { DBUS_FORCE_STDIN_NULL,
163 DBUS_FORCE_STDOUT_NULL,
164 DBUS_FORCE_STDERR_NULL };
166 const char *error_str =
"Failed mysteriously";
170 _DBUS_STATIC_ASSERT (STDIN_FILENO == 0);
171 _DBUS_STATIC_ASSERT (STDOUT_FILENO == 1);
172 _DBUS_STATIC_ASSERT (STDERR_FILENO == 2);
175 for (i = STDIN_FILENO; i <= STDERR_FILENO; i++)
181 devnull = open (
"/dev/null", O_RDWR);
185 error_str =
"Failed to open /dev/null";
194 if (devnull != i && (flags & relevant_flag[i]) != 0)
196 if (dup2 (devnull, i) < 0)
198 error_str =
"Failed to dup2 /dev/null onto a standard fd";
209 if (devnull > STDERR_FILENO)
212 if (error_str_p !=
NULL)
213 *error_str_p = error_str;
216 return (error_str ==
NULL);
219 static dbus_bool_t _dbus_set_fd_nonblocking (
int fd,
223 _dbus_open_socket (
int *fd_p,
232 *fd_p = socket (domain, type | SOCK_CLOEXEC, protocol);
233 cloexec_done = *fd_p >= 0;
236 if (*fd_p < 0 && (errno == EINVAL || errno == EPROTOTYPE))
239 *fd_p = socket (domain, type, protocol);
251 _dbus_verbose (
"socket fd %d opened\n", *fd_p);
258 "Failed to open socket: %s",
259 _dbus_strerror (errno));
275 _dbus_open_unix_socket (
int *fd,
278 return _dbus_open_socket(fd, PF_UNIX, SOCK_STREAM, 0, error);
329 #if HAVE_DECL_MSG_NOSIGNAL 333 data = _dbus_string_get_const_data_len (buffer, start, len);
337 bytes_written = send (fd.fd, data, len, MSG_NOSIGNAL);
339 if (bytes_written < 0 && errno == EINTR)
342 return bytes_written;
366 unsigned int *n_fds) {
367 #ifndef HAVE_UNIX_FD_PASSING 385 start = _dbus_string_get_length (buffer);
405 m.msg_controllen = CMSG_SPACE(*n_fds *
sizeof(
int));
409 m.msg_control = alloca(m.msg_controllen);
410 memset(m.msg_control, 0, m.msg_controllen);
416 m.msg_controllen = CMSG_LEN (*n_fds *
sizeof(
int));
420 bytes_read = recvmsg (fd.fd, &m, 0
421 #ifdef MSG_CMSG_CLOEXEC
442 for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm))
443 if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SCM_RIGHTS)
446 int *payload = (
int *) CMSG_DATA (cm);
447 size_t payload_len_bytes = (cm->cmsg_len - CMSG_LEN (0));
448 size_t payload_len_fds;
453 _DBUS_STATIC_ASSERT (
sizeof (
size_t) >=
sizeof (
unsigned int));
455 if ((m.msg_flags & MSG_CTRUNC) && CMSG_NXTHDR(&m, cm) ==
NULL &&
456 (
char *) payload + payload_len_bytes >
457 (
char *) m.msg_control + m.msg_controllen)
468 payload_len_bytes = m.msg_controllen -
469 ((
char *) payload - (
char *) m.msg_control);
472 payload_len_fds = payload_len_bytes /
sizeof (int);
474 if (_DBUS_LIKELY (payload_len_fds <= (
size_t) *n_fds))
477 fds_to_use = payload_len_fds;
485 fds_to_use = (size_t) *n_fds;
490 for (i = fds_to_use; i < payload_len_fds; i++)
496 memcpy (fds, payload, fds_to_use *
sizeof (
int));
501 *n_fds = (
unsigned int) fds_to_use;
506 for (i = 0; i < fds_to_use; i++)
515 if (m.msg_flags & MSG_CTRUNC)
526 for (i = 0; i < *n_fds; i++)
549 _dbus_write_socket_with_unix_fds(
DBusSocket fd,
556 #ifndef HAVE_UNIX_FD_PASSING 565 return _dbus_write_socket_with_unix_fds_two(fd, buffer, start, len,
NULL, 0, 0, fds, n_fds);
570 _dbus_write_socket_with_unix_fds_two(
DBusSocket fd,
580 #ifndef HAVE_UNIX_FD_PASSING 588 buffer1, start1, len1,
589 buffer2, start2, len2);
602 iov[0].iov_base = (
char*) _dbus_string_get_const_data_len (buffer1, start1, len1);
603 iov[0].iov_len = len1;
607 iov[1].iov_base = (
char*) _dbus_string_get_const_data_len (buffer2, start2, len2);
608 iov[1].iov_len = len2;
613 m.msg_iovlen = buffer2 ? 2 : 1;
617 m.msg_controllen = CMSG_SPACE(n_fds *
sizeof(
int));
618 m.msg_control = alloca(m.msg_controllen);
619 memset(m.msg_control, 0, m.msg_controllen);
621 cm = CMSG_FIRSTHDR(&m);
622 cm->cmsg_level = SOL_SOCKET;
623 cm->cmsg_type = SCM_RIGHTS;
624 cm->cmsg_len = CMSG_LEN(n_fds *
sizeof(
int));
625 memcpy(CMSG_DATA(cm), fds, n_fds *
sizeof(
int));
630 bytes_written = sendmsg (fd.fd, &m, 0
631 #
if HAVE_DECL_MSG_NOSIGNAL
636 if (bytes_written < 0 && errno == EINTR)
640 if (bytes_written > 0)
644 return bytes_written;
670 #if HAVE_DECL_MSG_NOSIGNAL 671 struct iovec vectors[2];
683 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
686 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
694 vectors[0].iov_base = (
char*) data1;
695 vectors[0].iov_len = len1;
696 vectors[1].iov_base = (
char*) data2;
697 vectors[1].iov_len = len2;
701 m.msg_iovlen = data2 ? 2 : 1;
705 bytes_written = sendmsg (fd.fd, &m, MSG_NOSIGNAL);
707 if (bytes_written < 0 && errno == EINTR)
710 return bytes_written;
714 buffer2, start2, len2);
745 start = _dbus_string_get_length (buffer);
757 bytes_read = read (fd, data, count);
803 data = _dbus_string_get_const_data_len (buffer, start, len);
807 bytes_written = write (fd, data, len);
809 if (bytes_written < 0 && errno == EINTR)
813 if (bytes_written > 0)
817 return bytes_written;
857 struct iovec vectors[2];
862 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
865 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
873 vectors[0].iov_base = (
char*) data1;
874 vectors[0].iov_len = len1;
875 vectors[1].iov_base = (
char*) data2;
876 vectors[1].iov_len = len2;
880 bytes_written = writev (fd,
884 if (bytes_written < 0 && errno == EINTR)
887 return bytes_written;
894 if (ret1 == len1 && buffer2 !=
NULL)
908 #define _DBUS_MAX_SUN_PATH_LENGTH 99 946 struct sockaddr_un addr;
947 _DBUS_STATIC_ASSERT (
sizeof (addr.sun_path) > _DBUS_MAX_SUN_PATH_LENGTH);
949 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
951 _dbus_verbose (
"connecting to unix socket %s abstract=%d\n",
955 if (!_dbus_open_unix_socket (&fd, error))
957 _DBUS_ASSERT_ERROR_IS_SET(error);
960 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
963 addr.sun_family = AF_UNIX;
964 path_len = strlen (path);
969 addr.sun_path[0] =
'\0';
972 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
975 "Abstract socket name too long\n");
980 strncpy (&addr.sun_path[1], path, sizeof (addr.sun_path) - 2);
984 "Operating system does not support abstract socket namespace\n");
991 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
994 "Socket name too long\n");
999 strncpy (addr.sun_path, path, sizeof (addr.sun_path) - 1);
1002 if (connect (fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1006 "Failed to connect to socket %s: %s",
1007 path, _dbus_strerror (errno));
1013 if (!_dbus_set_fd_nonblocking (fd, error))
1015 _DBUS_ASSERT_ERROR_IS_SET (error);
1046 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1048 _dbus_verbose (
"connecting to process %s\n", path);
1051 retval = socketpair (AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
1052 cloexec_done = (retval >= 0);
1054 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
1057 retval = socketpair (AF_UNIX, SOCK_STREAM, 0, fds);
1064 "Failed to create socket pair: %s",
1065 _dbus_strerror (errno));
1080 "Failed to fork() to call %s: %s",
1081 path, _dbus_strerror (errno));
1092 dup2 (fds[1], STDIN_FILENO);
1093 dup2 (fds[1], STDOUT_FILENO);
1095 if (fds[1] != STDIN_FILENO &&
1096 fds[1] != STDOUT_FILENO)
1104 execvp (path, (
char *
const *) argv);
1106 fprintf (stderr,
"Failed to execute process %s: %s\n", path, _dbus_strerror (errno));
1114 if (!_dbus_set_fd_nonblocking (fds[0], error))
1116 _DBUS_ASSERT_ERROR_IS_SET (error);
1148 struct sockaddr_un addr;
1150 _DBUS_STATIC_ASSERT (
sizeof (addr.sun_path) > _DBUS_MAX_SUN_PATH_LENGTH);
1152 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1154 _dbus_verbose (
"listening on unix socket %s abstract=%d\n",
1157 if (!_dbus_open_unix_socket (&listen_fd, error))
1159 _DBUS_ASSERT_ERROR_IS_SET(error);
1162 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1165 addr.sun_family = AF_UNIX;
1166 path_len = strlen (path);
1174 addr.sun_path[0] =
'\0';
1177 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1180 "Abstract socket name too long\n");
1185 strncpy (&addr.sun_path[1], path, sizeof (addr.sun_path) - 2);
1189 "Operating system does not support abstract socket namespace\n");
1209 if (stat (path, &sb) == 0 &&
1210 S_ISSOCK (sb.st_mode))
1214 if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
1217 "Socket name too long\n");
1222 strncpy (addr.sun_path, path, sizeof (addr.sun_path) - 1);
1225 if (bind (listen_fd, (
struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (
struct sockaddr_un, sun_path) + path_len) < 0)
1228 "Failed to bind socket \"%s\": %s",
1229 path, _dbus_strerror (errno));
1234 if (listen (listen_fd, SOMAXCONN ) < 0)
1237 "Failed to listen on socket \"%s\": %s",
1238 path, _dbus_strerror (errno));
1243 if (!_dbus_set_fd_nonblocking (listen_fd, error))
1245 _DBUS_ASSERT_ERROR_IS_SET (error);
1253 if (!
abstract && chmod (path, 0777) < 0)
1254 _dbus_warn (
"Could not set mode 0777 on socket %s", path);
1278 #ifdef HAVE_PDPLINUX 1279 _dbus_verbose(
"Entry (new socket processing NSP)\n");
1282 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1284 n = sd_listen_fds (
TRUE);
1288 "Failed to acquire systemd socket: %s",
1289 _dbus_strerror (-n));
1296 "No socket received.");
1300 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1302 r = sd_is_socket (fd, AF_UNSPEC, SOCK_STREAM, 1);
1306 "Failed to verify systemd socket type: %s",
1307 _dbus_strerror (-r));
1314 "Passed socket has wrong type.");
1326 "Failed to allocate file handle array.");
1330 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1332 if (!_dbus_set_fd_nonblocking (fd, error))
1334 _DBUS_ASSERT_ERROR_IS_SET (error);
1338 new_fds[fd - SD_LISTEN_FDS_START].fd = fd;
1346 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
1355 "dbus was compiled without systemd support");
1363 _dbus_error_from_gai (
int gai_res,
1429 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (
const char*)
NULL, error);
1433 _dbus_connect_tcp_socket_with_nonce (
const char *host,
1436 const char *noncefile,
1439 int saved_errno = 0;
1442 struct addrinfo hints;
1443 struct addrinfo *ai, *tmp;
1445 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1450 hints.ai_family = AF_UNSPEC;
1451 else if (!strcmp(family,
"ipv4"))
1452 hints.ai_family = AF_INET;
1453 else if (!strcmp(family,
"ipv6"))
1454 hints.ai_family = AF_INET6;
1459 "Unknown address family %s", family);
1460 return _dbus_socket_get_invalid ();
1462 hints.ai_protocol = IPPROTO_TCP;
1463 hints.ai_socktype = SOCK_STREAM;
1464 hints.ai_flags = AI_ADDRCONFIG;
1466 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0)
1469 _dbus_error_from_gai (res, errno),
1470 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1471 host, port, gai_strerror(res), res);
1472 return _dbus_socket_get_invalid ();
1478 if (!_dbus_open_socket (&fd.fd, tmp->ai_family, SOCK_STREAM, 0, error))
1481 _DBUS_ASSERT_ERROR_IS_SET(error);
1482 return _dbus_socket_get_invalid ();
1484 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1486 if (connect (fd.fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1488 saved_errno = errno;
1503 "Failed to connect to socket \"%s:%s\" %s",
1504 host, port, _dbus_strerror(saved_errno));
1505 return _dbus_socket_get_invalid ();
1508 if (noncefile !=
NULL)
1513 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1519 return _dbus_socket_get_invalid ();
1523 if (!_dbus_set_fd_nonblocking (fd.fd, error))
1526 return _dbus_socket_get_invalid ();
1557 int nlisten_fd = 0, res, i;
1559 struct addrinfo hints;
1560 struct addrinfo *ai, *tmp;
1561 unsigned int reuseaddr;
1564 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1569 hints.ai_family = AF_UNSPEC;
1570 else if (!strcmp(family,
"ipv4"))
1571 hints.ai_family = AF_INET;
1572 else if (!strcmp(family,
"ipv6"))
1573 hints.ai_family = AF_INET6;
1578 "Unknown address family %s", family);
1582 hints.ai_protocol = IPPROTO_TCP;
1583 hints.ai_socktype = SOCK_STREAM;
1584 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1586 redo_lookup_with_port:
1588 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1591 _dbus_error_from_gai (res, errno),
1592 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1593 host ? host :
"*", port, gai_strerror(res), res);
1600 int fd = -1, tcp_nodelay_on;
1603 if (!_dbus_open_socket (&fd, tmp->ai_family, SOCK_STREAM, 0, error))
1605 _DBUS_ASSERT_ERROR_IS_SET(error);
1608 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1611 if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
sizeof(reuseaddr))==-1)
1613 _dbus_warn (
"Failed to set socket option \"%s:%s\": %s",
1614 host ? host :
"*", port, _dbus_strerror (errno));
1620 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &tcp_nodelay_on,
sizeof (tcp_nodelay_on)) == -1)
1622 _dbus_warn (
"Failed to set TCP_NODELAY socket option \"%s:%s\": %s",
1623 host ? host :
"*", port, _dbus_strerror (errno));
1626 if (bind (fd, (
struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
1628 saved_errno = errno;
1630 if (saved_errno == EADDRINUSE)
1648 "Failed to bind socket \"%s:%s\": %s",
1649 host ? host :
"*", port, _dbus_strerror (saved_errno));
1653 if (listen (fd, 30 ) < 0)
1655 saved_errno = errno;
1658 "Failed to listen on socket \"%s:%s\": %s",
1659 host ? host :
"*", port, _dbus_strerror (saved_errno));
1668 "Failed to allocate file handle array");
1671 listen_fd = newlisten_fd;
1672 listen_fd[nlisten_fd].fd = fd;
1675 if (!_dbus_string_get_length(retport))
1681 if (!port || !strcmp(port,
"0"))
1684 struct sockaddr_storage addr;
1688 addrlen =
sizeof(addr);
1689 result = getsockname(fd, (
struct sockaddr*) &addr, &addrlen);
1693 saved_errno = errno;
1695 "Failed to retrieve socket name for \"%s:%s\": %s",
1696 host ? host :
"*", port, _dbus_strerror (saved_errno));
1700 if ((res = getnameinfo ((
struct sockaddr*)&addr, addrlen,
NULL, 0,
1701 portbuf,
sizeof(portbuf),
1702 NI_NUMERICHOST | NI_NUMERICSERV)) != 0)
1704 saved_errno = errno;
1706 "Failed to resolve port \"%s:%s\": %s (%d)",
1707 host ? host :
"*", port, gai_strerror(res), res);
1718 port = _dbus_string_get_const_data(retport);
1720 goto redo_lookup_with_port;
1741 "Failed to bind socket \"%s:%s\": %s",
1742 host ? host :
"*", port, _dbus_strerror (errno));
1746 for (i = 0 ; i < nlisten_fd ; i++)
1748 if (!_dbus_set_fd_nonblocking (listen_fd[i].fd, error))
1761 for (i = 0 ; i < nlisten_fd ; i++)
1768 write_credentials_byte (
int server_fd,
1772 char buf[1] = {
'\0' };
1773 #if defined(HAVE_CMSGCRED) 1776 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
1787 msg.msg_control = (caddr_t) &cmsg;
1788 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
1790 cmsg.hdr.cmsg_len = CMSG_LEN (
sizeof (
struct cmsgcred));
1791 cmsg.hdr.cmsg_level = SOL_SOCKET;
1792 cmsg.hdr.cmsg_type = SCM_CREDS;
1795 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1799 #if defined(HAVE_CMSGCRED) 1800 bytes_written = sendmsg (server_fd, &msg, 0
1801 #
if HAVE_DECL_MSG_NOSIGNAL
1809 if (bytes_written < 0 && errno == EINVAL)
1812 bytes_written = send (server_fd, buf, 1, 0
1813 #
if HAVE_DECL_MSG_NOSIGNAL
1819 if (bytes_written < 0 && errno == EINTR)
1822 if (bytes_written < 0)
1825 "Failed to write credentials byte: %s",
1826 _dbus_strerror (errno));
1829 else if (bytes_written == 0)
1832 "wrote zero bytes writing credentials byte");
1838 _dbus_verbose (
"wrote credentials byte\n");
1845 add_linux_security_label_to_credentials (
int client_fd,
1848 #if defined(__linux__) && defined(SO_PEERSEC) 1850 socklen_t len = 1024;
1857 while (getsockopt (client_fd, SOL_SOCKET, SO_PEERSEC,
1858 _dbus_string_get_data (&buf), &len) < 0)
1862 _dbus_verbose (
"getsockopt failed with %s, len now %lu\n",
1863 _dbus_strerror (e), (
unsigned long) len);
1865 if (e != ERANGE || len <= _dbus_string_get_length_uint (&buf))
1867 _dbus_verbose (
"Failed to getsockopt(SO_PEERSEC): %s\n",
1868 _dbus_strerror (e));
1880 _dbus_verbose (
"will try again with %lu\n", (
unsigned long) len);
1885 _dbus_verbose (
"getsockopt(SO_PEERSEC) yielded <= 0 bytes: %lu\n",
1886 (
unsigned long) len);
1890 if (len > _dbus_string_get_length_uint (&buf))
1892 _dbus_verbose (
"%lu > %u", (
unsigned long) len,
1893 _dbus_string_get_length_uint (&buf));
1897 if (_dbus_string_get_byte (&buf, len - 1) == 0)
1901 _dbus_verbose (
"subtracting trailing \\0\n");
1912 if (strlen (_dbus_string_get_const_data (&buf)) != len)
1917 _dbus_verbose (
"security label from kernel had an embedded \\0, " 1922 _dbus_verbose (
"getsockopt(SO_PEERSEC): %lu bytes excluding \\0: %s\n",
1923 (
unsigned long) len,
1924 _dbus_string_get_const_data (&buf));
1927 _dbus_string_get_const_data (&buf)))
1991 #ifdef HAVE_PDPLINUX 1995 BusPDPLinuxID* read_parsecid=
NULL;
2005 #ifdef HAVE_CMSGCRED 2008 char cred[CMSG_SPACE (
sizeof (
struct cmsgcred))];
2016 _DBUS_STATIC_ASSERT (
sizeof (pid_t) <=
sizeof (
dbus_pid_t));
2017 _DBUS_STATIC_ASSERT (
sizeof (uid_t) <=
sizeof (
dbus_uid_t));
2018 _DBUS_STATIC_ASSERT (
sizeof (gid_t) <=
sizeof (
dbus_gid_t));
2023 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2027 iov.iov_base = &buf;
2034 #if defined(HAVE_CMSGCRED) 2036 msg.msg_control = (caddr_t) &cmsg;
2037 msg.msg_controllen = CMSG_SPACE (
sizeof (
struct cmsgcred));
2041 bytes_read = recvmsg (client_fd.fd, &msg, 0);
2054 "Failed to read credentials byte: %s",
2055 _dbus_strerror (errno));
2058 else if (bytes_read == 0)
2064 "Failed to read credentials byte (zero-length read)");
2067 else if (buf !=
'\0')
2070 "Credentials byte was not nul");
2074 _dbus_verbose (
"read credentials byte\n");
2087 struct sockpeercred cr;
2091 socklen_t cr_len =
sizeof (cr);
2093 if (getsockopt (client_fd.fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) != 0)
2095 _dbus_verbose (
"Failed to getsockopt(SO_PEERCRED): %s\n",
2096 _dbus_strerror (errno));
2098 else if (cr_len !=
sizeof (cr))
2100 _dbus_verbose (
"Failed to getsockopt(SO_PEERCRED), returned %d bytes, expected %d\n",
2101 cr_len, (
int)
sizeof (cr));
2108 #ifdef HAVE_PDPLINUX 2110 memset(&caps,0xCC,
sizeof(caps));
2112 res_cap=parsec_capget(pid_read,&caps);
2114 _dbus_verbose(
"parsec_capget: %m\n");
2116 _dbus_verbose(
"So: set caps=0\n");
2118 memset(&caps,0,
sizeof(caps));
2121 _dbus_verbose(
"parsec_capget: success\n");
2124 pdpl=pdp_get_peer_label(client_fd.fd);
2126 _dbus_verbose(
"pdp_get_peer_label: %m\n");
2129 _dbus_verbose(
"pdp_get_peer_label: success\n");
2132 if (pid_read && (0==res_cap) && pdpl ){
2134 void* rawlabel=
NULL;
2136 _dbus_verbose(
"call pdpl_get_raw\n");
2137 rawlabel=pdpl_get_raw(pdpl,&sz);
2143 memcpy(&read_parsecid->caps,&caps,
sizeof(caps));
2145 read_parsecid->sz_pdplinux_context=sz;
2147 memcpy(read_parsecid->pdplinux_context,rawlabel,sz);
2149 if (!_dbus_credentials_pdplinux_add_unix_parsec(credentials, read_parsecid)){
2150 _dbus_verbose(
"_dbus_credentials_add_unix_parsec failed!\n");
2153 _dbus_verbose(
"_dbus_credentials_add_unix_parsec OK!\n");
2155 _dbus_pdplinux_show_text_label_info3(
"Label to process", read_parsecid);
2161 _dbus_verbose(
"No memory\n");
2167 _dbus_verbose(
"pdpl_get_raw failed so no caps/no pdpl: %m\n");
2172 _dbus_verbose(
"Get process label and caps for pid=%ld (current pid is %ld) failed: caps - %s, pdp_get_pid - %s\n",
2174 0==res_cap ?
"OK" :
"Failed",
2175 pdpl ?
"OK" :
"Failed");
2178 if (pdpl) pdpl_put(pdpl);
2182 #elif defined(HAVE_UNPCBID) && defined(LOCAL_PEEREID) 2186 socklen_t cr_len =
sizeof (cr);
2188 if (getsockopt (client_fd.fd, 0, LOCAL_PEEREID, &cr, &cr_len) != 0)
2190 _dbus_verbose (
"Failed to getsockopt(LOCAL_PEEREID): %s\n",
2191 _dbus_strerror (errno));
2193 else if (cr_len !=
sizeof (cr))
2195 _dbus_verbose (
"Failed to getsockopt(LOCAL_PEEREID), returned %d bytes, expected %d\n",
2196 cr_len, (
int)
sizeof (cr));
2200 pid_read = cr.unp_pid;
2201 uid_read = cr.unp_euid;
2203 #elif defined(HAVE_CMSGCRED) 2212 struct cmsgcred *cred;
2213 struct cmsghdr *cmsgp;
2215 for (cmsgp = CMSG_FIRSTHDR (&msg);
2217 cmsgp = CMSG_NXTHDR (&msg, cmsgp))
2219 if (cmsgp->cmsg_type == SCM_CREDS &&
2220 cmsgp->cmsg_level == SOL_SOCKET &&
2221 cmsgp->cmsg_len >= CMSG_LEN (
sizeof (
struct cmsgcred)))
2223 cred = (
struct cmsgcred *) CMSG_DATA (cmsgp);
2224 pid_read = cred->cmcred_pid;
2225 uid_read = cred->cmcred_euid;
2230 #elif defined(HAVE_GETPEERUCRED) 2234 ucred_t * ucred =
NULL;
2235 if (getpeerucred (client_fd.fd, &ucred) == 0)
2238 adt_session_data_t *adth =
NULL;
2240 pid_read = ucred_getpid (ucred);
2241 uid_read = ucred_geteuid (ucred);
2244 if (adt_start_session (&adth,
NULL, 0) || (adth ==
NULL))
2246 _dbus_verbose (
"Failed to adt_start_session(): %s\n", _dbus_strerror (errno));
2250 if (adt_set_from_ucred (adth, ucred, ADT_NEW))
2252 _dbus_verbose (
"Failed to adt_set_from_ucred(): %s\n", _dbus_strerror (errno));
2256 adt_export_data_t *data =
NULL;
2257 size_t size = adt_export_session_data (adth, &data);
2260 _dbus_verbose (
"Failed to adt_export_session_data(): %s\n", _dbus_strerror (errno));
2268 (void) adt_end_session (adth);
2274 _dbus_verbose (
"Failed to getpeerucred() credentials: %s\n", _dbus_strerror (errno));
2284 #elif defined(HAVE_GETPEEREID) 2302 if (getpeereid (client_fd.fd, &euid, &egid) == 0)
2308 _dbus_verbose (
"Failed to getpeereid() credentials: %s\n", _dbus_strerror (errno));
2312 #warning Socket credentials not supported on this Unix OS 2313 #warning Please tell https://bugs.freedesktop.org/enter_bug.cgi?product=DBus 2319 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \ 2320 defined(__linux__) || \ 2321 defined(__OpenBSD__) || \ 2323 # error Credentials passing not working on this OS is a regression! 2326 _dbus_verbose (
"Socket credentials not supported on this OS\n");
2330 _dbus_verbose (
"Credentials:" 2341 _DBUS_SET_OOM (error);
2350 _DBUS_SET_OOM (error);
2355 if (!add_linux_security_label_to_credentials (client_fd.fd, credentials))
2357 _DBUS_SET_OOM (error);
2361 #ifdef HAVE_PDPLINUX 2364 if (!_dbus_credentials_pdplinux_add_unix_parsec (credentials, read_parsecid))
2366 _dbus_verbose (
"_dbus_credentials_add_unix_parsec: failed\n");
2367 _DBUS_SET_OOM (error);
2371 _dbus_verbose (
"_dbus_credentials_add_unix_parsec: OK\n");
2400 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2402 if (write_credentials_byte (server_fd.fd, error))
2421 struct sockaddr addr;
2427 addrlen =
sizeof (addr);
2437 client_fd.fd = accept4 (listen_fd.fd, &addr, &addrlen, SOCK_CLOEXEC);
2438 cloexec_done = client_fd.fd >= 0;
2440 if (client_fd.fd < 0 && (errno == ENOSYS || errno == EINVAL))
2443 client_fd.fd = accept (listen_fd.fd, &addr, &addrlen);
2446 if (client_fd.fd < 0)
2452 _dbus_verbose (
"client fd %d accepted\n", client_fd.fd);
2475 const char *directory;
2478 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2480 directory = _dbus_string_get_const_data (dir);
2482 if (stat (directory, &sb) < 0)
2485 "%s", _dbus_strerror (errno));
2490 if (sb.st_uid != geteuid ())
2493 "%s directory is owned by user %lu, not %lu",
2495 (
unsigned long) sb.st_uid,
2496 (
unsigned long) geteuid ());
2500 if ((S_IROTH & sb.st_mode) || (S_IWOTH & sb.st_mode) ||
2501 (S_IRGRP & sb.st_mode) || (S_IWGRP & sb.st_mode))
2504 "%s directory is not private to the user", directory);
2512 fill_user_info_from_passwd (
struct passwd *p,
2519 info->
uid = p->pw_uid;
2540 const char *username_c;
2553 if (username !=
NULL)
2554 username_c = _dbus_string_get_const_data (username);
2563 #if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R) 2569 struct passwd p_str;
2572 buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
2578 if ((
long) buflen <= 0)
2592 #ifdef HAVE_POSIX_GETPWNAM_R 2594 result = getpwuid_r (uid, &p_str, buf, buflen,
2597 result = getpwnam_r (username_c, &p_str, buf, buflen,
2601 p = getpwuid_r (uid, &p_str, buf, buflen);
2603 p = getpwnam_r (username_c, &p_str, buf, buflen);
2607 if (result == ERANGE && buflen < 512 * 1024)
2617 if (result == 0 && p == &p_str)
2619 if (!fill_user_info_from_passwd (p, info, error))
2629 "User \"%s\" unknown or no memory to allocate password entry\n",
2630 username_c ? username_c :
"???");
2631 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2644 p = getpwnam (username_c);
2648 if (!fill_user_info_from_passwd (p, info, error))
2656 "User \"%s\" unknown or no memory to allocate password entry\n",
2657 username_c ? username_c :
"???");
2658 _dbus_verbose (
"User %s unknown\n", username_c ? username_c :
"???");
2667 #ifdef HAVE_GETGROUPLIST 2672 int initial_buf_count;
2674 initial_buf_count = 17;
2675 buf_count = initial_buf_count;
2683 if (getgrouplist (username_c,
2685 buf, &buf_count) < 0)
2701 if (buf_count == initial_buf_count)
2716 if (getgrouplist (username_c, info->
primary_gid, buf, &buf_count) < 0)
2720 _dbus_warn (
"It appears that username \"%s\" is in more than %d groups.\nProceeding with just the first %d groups.",
2721 username_c, buf_count, buf_count);
2727 "Failed to get groups for username \"%s\" primary GID " 2730 _dbus_strerror (errno));
2745 for (i = 0; i < buf_count; ++i)
2768 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2773 _DBUS_ASSERT_ERROR_IS_SET (error);
2807 return fill_user_info (info, uid,
2821 #ifdef HAVE_PDPLINUX 2824 parsec_caps_t caps={0,0,0};
2826 BusPDPLinuxID* parsecid=
NULL;
2833 _DBUS_STATIC_ASSERT (
sizeof (pid_t) <=
sizeof (
dbus_pid_t));
2834 _DBUS_STATIC_ASSERT (
sizeof (uid_t) <=
sizeof (
dbus_uid_t));
2835 _DBUS_STATIC_ASSERT (
sizeof (gid_t) <=
sizeof (
dbus_gid_t));
2842 #ifdef HAVE_PDPLINUX 2843 memset(&caps,0,
sizeof(caps));
2846 res_cap=parsec_capget(0,&caps);
2847 if (0!=res_cap) _dbus_verbose(
"parsec_capget: %m\n");
2849 pdpl=pdp_get_current();
2850 if (!pdpl) _dbus_verbose(
"pdp_get_current: %m\n");
2852 if ( 0==res_cap && pdpl ){
2856 _dbus_verbose(
"Get caps and label to process pid=%ld\n",curpid);
2858 rawlabel=pdpl_get_raw(pdpl,&sz);
2864 parsecid->caps=caps;
2865 parsecid->sz_pdplinux_context=sz;
2867 memcpy(parsecid->pdplinux_context,rawlabel,sz);
2869 if (!_dbus_credentials_pdplinux_add_unix_parsec(credentials, parsecid)){
2870 _dbus_verbose(
"_dbus_credentials_add_unix_parsec failed so no caps and label\n");
2877 _dbus_verbose(
"No memory\n");
2884 _dbus_verbose(
"pdpl_get_raw failed so no caps and label: %m\n");
2889 _dbus_verbose(
"Get process label and caps for pid=%ld (this is current process) failed: caps - %s, pdp_get_pid - %s\n",
2891 0==res_cap ?
"OK" :
"Failed",
2892 pdpl ?
"OK" :
"Failed");
2897 if (pdpl) pdpl_put(pdpl);
2979 if (_dbus_string_get_length (uid_str) == 0)
2981 _dbus_verbose (
"UID string was zero length\n");
2990 _dbus_verbose (
"could not parse string as a UID\n");
2994 if (end != _dbus_string_get_length (uid_str))
2996 _dbus_verbose (
"string contained trailing stuff after UID\n");
3011 static pthread_mutex_t atomic_mutex = PTHREAD_MUTEX_INITIALIZER;
3024 return __sync_add_and_fetch(&atomic->
value, 1)-1;
3028 pthread_mutex_lock (&atomic_mutex);
3029 res = atomic->
value;
3031 pthread_mutex_unlock (&atomic_mutex);
3047 return __sync_sub_and_fetch(&atomic->
value, 1)+1;
3051 pthread_mutex_lock (&atomic_mutex);
3052 res = atomic->
value;
3054 pthread_mutex_unlock (&atomic_mutex);
3071 __sync_synchronize ();
3072 return atomic->
value;
3076 pthread_mutex_lock (&atomic_mutex);
3077 res = atomic->
value;
3078 pthread_mutex_unlock (&atomic_mutex);
3095 int timeout_milliseconds)
3097 #if defined(HAVE_POLL) && !defined(BROKEN_POLL) 3099 if (timeout_milliseconds < -1)
3101 timeout_milliseconds = -1;
3106 timeout_milliseconds);
3109 fd_set read_set, write_set, err_set;
3115 FD_ZERO (&read_set);
3116 FD_ZERO (&write_set);
3119 for (i = 0; i < n_fds; i++)
3124 FD_SET (fdp->
fd, &read_set);
3127 FD_SET (fdp->
fd, &write_set);
3129 FD_SET (fdp->
fd, &err_set);
3131 max_fd = MAX (max_fd, fdp->
fd);
3134 tv.tv_sec = timeout_milliseconds / 1000;
3135 tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
3137 ready = select (max_fd + 1, &read_set, &write_set, &err_set,
3138 timeout_milliseconds < 0 ?
NULL : &tv);
3142 for (i = 0; i < n_fds; i++)
3148 if (FD_ISSET (fdp->
fd, &read_set))
3151 if (FD_ISSET (fdp->
fd, &write_set))
3154 if (FD_ISSET (fdp->
fd, &err_set))
3174 #ifdef HAVE_MONOTONIC_CLOCK 3176 clock_gettime (CLOCK_MONOTONIC, &ts);
3179 *tv_sec = ts.tv_sec;
3181 *tv_usec = ts.tv_nsec / 1000;
3185 gettimeofday (&t,
NULL);
3190 *tv_usec = t.tv_usec;
3207 gettimeofday (&t,
NULL);
3212 *tv_usec = t.tv_usec;
3227 const char *filename_c;
3229 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3231 filename_c = _dbus_string_get_const_data (filename);
3233 if (mkdir (filename_c, 0700) < 0)
3235 if (errno == EEXIST)
3239 "Failed to create directory %s: %s\n",
3240 filename_c, _dbus_strerror (errno));
3259 const char *filename_c;
3261 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3263 filename_c = _dbus_string_get_const_data (filename);
3265 if (mkdir (filename_c, 0700) < 0)
3268 "Failed to create directory %s: %s\n",
3269 filename_c, _dbus_strerror (errno));
3293 if (_dbus_string_get_length (dir) == 0 ||
3294 _dbus_string_get_length (next_component) == 0)
3297 dir_ends_in_slash =
'/' == _dbus_string_get_byte (dir,
3298 _dbus_string_get_length (dir) - 1);
3300 file_starts_with_slash =
'/' == _dbus_string_get_byte (next_component, 0);
3302 if (dir_ends_in_slash && file_starts_with_slash)
3306 else if (!(dir_ends_in_slash || file_starts_with_slash))
3313 _dbus_string_get_length (dir));
3317 #define NANOSECONDS_PER_SECOND 1000000000 3319 #define MICROSECONDS_PER_SECOND 1000000 3321 #define MILLISECONDS_PER_SECOND 1000 3323 #define NANOSECONDS_PER_MILLISECOND 1000000 3325 #define MICROSECONDS_PER_MILLISECOND 1000 3334 #ifdef HAVE_NANOSLEEP 3335 struct timespec req;
3336 struct timespec rem;
3338 req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
3339 req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
3343 while (nanosleep (&req, &rem) < 0 && errno == EINTR)
3345 #elif defined (HAVE_USLEEP) 3346 usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
3348 sleep (MAX (milliseconds / 1000, 1));
3370 old_len = _dbus_string_get_length (str);
3374 fd = open (
"/dev/urandom", O_RDONLY);
3379 "Could not open /dev/urandom: %s",
3380 _dbus_strerror (errno));
3384 _dbus_verbose (
"/dev/urandom fd %d opened\n", fd);
3388 if (result != n_bytes)
3392 "Could not read /dev/urandom: %s",
3393 _dbus_strerror (errno));
3396 "Short read from /dev/urandom");
3403 _dbus_verbose (
"Read %d bytes from /dev/urandom\n",
3431 _dbus_strerror (
int error_number)
3435 msg = strerror (error_number);
3448 signal (SIGPIPE, SIG_IGN);
3463 val = fcntl (fd, F_GETFD, 0);
3470 fcntl (fd, F_SETFD, val);
3484 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3493 "Could not close fd %d", fd);
3514 #ifdef F_DUPFD_CLOEXEC 3517 new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
3518 cloexec_done = new_fd >= 0;
3520 if (new_fd < 0 && errno == EINVAL)
3523 new_fd = fcntl(fd, F_DUPFD, 3);
3529 "Could not duplicate fd %d", fd);
3533 #ifdef F_DUPFD_CLOEXEC 3554 return _dbus_set_fd_nonblocking (fd.fd, error);
3558 _dbus_set_fd_nonblocking (
int fd,
3563 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3565 val = fcntl (fd, F_GETFL, 0);
3569 "Failed to get flags from file descriptor %d: %s",
3570 fd, _dbus_strerror (errno));
3571 _dbus_verbose (
"Failed to get flags for fd %d: %s\n", fd,
3572 _dbus_strerror (errno));
3576 if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
3579 "Failed to set nonblocking flag of file descriptor %d: %s",
3580 fd, _dbus_strerror (errno));
3581 _dbus_verbose (
"Failed to set fd %d nonblocking: %s\n",
3582 fd, _dbus_strerror (errno));
3598 #if defined (HAVE_BACKTRACE) && defined (DBUS_BUILT_R_DYNAMIC) 3604 bt_size = backtrace (bt, 500);
3606 syms = backtrace_symbols (bt, bt_size);
3612 fprintf (stderr,
" %s\n", syms[i]);
3618 #elif defined (HAVE_BACKTRACE) && ! defined (DBUS_BUILT_R_DYNAMIC) 3619 fprintf (stderr,
" D-Bus not built with -rdynamic so unable to print a backtrace\n");
3621 fprintf (stderr,
" D-Bus not compiled with backtrace support so unable to print a backtrace\n");
3643 #ifdef HAVE_SOCKETPAIR 3650 retval = socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds);
3651 cloexec_done = retval >= 0;
3653 if (retval < 0 && (errno == EINVAL || errno == EPROTOTYPE))
3656 retval = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
3662 "Could not create full-duplex pipe");
3666 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3677 (!_dbus_set_fd_nonblocking (fds[0],
NULL) ||
3678 !_dbus_set_fd_nonblocking (fds[1],
NULL)))
3681 "Could not set full-duplex pipe nonblocking");
3692 _dbus_verbose (
"full-duplex pipe %d <-> %d\n",
3697 _dbus_warn (
"_dbus_socketpair() not implemented on this OS");
3699 "_dbus_socketpair() not implemented on this OS");
3716 char static_buf[1024];
3717 int bufsize =
sizeof (static_buf);
3721 DBUS_VA_COPY (args_copy, args);
3722 len = vsnprintf (static_buf, bufsize, format, args_copy);
3739 DBUS_VA_COPY (args_copy, args);
3741 if (vsnprintf (static_buf, 1, format, args_copy) == 1)
3760 DBUS_VA_COPY (args_copy, args);
3761 len = vsnprintf (buf, bufsize, format, args_copy);
3786 static const char* tmpdir =
NULL;
3798 tmpdir = getenv(
"TMPDIR");
3804 tmpdir = getenv(
"TMP");
3806 tmpdir = getenv(
"TEMP");
3820 #if defined(DBUS_ENABLE_X11_AUTOLAUNCH) || defined(DBUS_ENABLE_LAUNCHD) 3841 _read_subprocess_line_argv (
const char *progpath,
3843 const char *
const *argv,
3847 int result_pipe[2] = { -1, -1 };
3848 int errors_pipe[2] = { -1, -1 };
3855 sigset_t new_set, old_set;
3857 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3864 sigemptyset (&new_set);
3865 sigaddset (&new_set, SIGCHLD);
3866 sigprocmask (SIG_BLOCK, &new_set, &old_set);
3868 orig_len = _dbus_string_get_length (result);
3872 if (pipe (result_pipe) < 0)
3875 "Failed to create a pipe to call %s: %s",
3876 progpath, _dbus_strerror (errno));
3877 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3878 progpath, _dbus_strerror (errno));
3881 if (pipe (errors_pipe) < 0)
3884 "Failed to create a pipe to call %s: %s",
3885 progpath, _dbus_strerror (errno));
3886 _dbus_verbose (
"Failed to create a pipe to call %s: %s\n",
3887 progpath, _dbus_strerror (errno));
3895 "Failed to fork() to call %s: %s",
3896 progpath, _dbus_strerror (errno));
3897 _dbus_verbose (
"Failed to fork() to call %s: %s\n",
3898 progpath, _dbus_strerror (errno));
3905 const char *error_str;
3909 int saved_errno = errno;
3914 if (write (errors_pipe[
WRITE_END], error_str, strlen (error_str)) < 0 ||
3915 write (errors_pipe[WRITE_END],
": ", 2) < 0)
3920 error_str = _dbus_strerror (saved_errno);
3922 if (write (errors_pipe[WRITE_END], error_str, strlen (error_str)) < 0)
3932 close (errors_pipe[READ_END]);
3934 if (dup2 (result_pipe[
WRITE_END], 1) == -1)
3936 if (dup2 (errors_pipe[WRITE_END], 2) == -1)
3941 sigprocmask (SIG_SETMASK, &old_set,
NULL);
3944 if (progpath[0] ==
'/')
3946 execv (progpath, (
char *
const *) argv);
3955 execvp (strrchr (progpath,
'/')+1, (
char *
const *) argv);
3958 execvp (progpath, (
char *
const *) argv);
3966 close (errors_pipe[WRITE_END]);
3980 ret = waitpid (pid, &status, 0);
3982 while (ret == -1 && errno == EINTR);
3986 if (!WIFEXITED (status) || WEXITSTATUS (status) != 0 )
3992 _DBUS_SET_OOM (error);
4004 if (_dbus_string_get_length (&error_message) > 0)
4006 "%s terminated abnormally with the following error: %s",
4007 progpath, _dbus_string_get_data (&error_message));
4010 "%s terminated abnormally without any error message",
4018 sigprocmask (SIG_SETMASK, &old_set,
NULL);
4021 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4023 _DBUS_ASSERT_ERROR_IS_SET (error);
4025 if (result_pipe[0] != -1)
4026 close (result_pipe[0]);
4027 if (result_pipe[1] != -1)
4028 close (result_pipe[1]);
4029 if (errors_pipe[0] != -1)
4030 close (errors_pipe[0]);
4031 if (errors_pipe[1] != -1)
4032 close (errors_pipe[1]);
4055 #ifdef DBUS_ENABLE_X11_AUTOLAUNCH 4056 static const char arg_dbus_launch[] =
"dbus-launch";
4057 static const char arg_autolaunch[] =
"--autolaunch";
4058 static const char arg_binary_syntax[] =
"--binary-syntax";
4059 static const char arg_close_stderr[] =
"--close-stderr";
4064 const char *display;
4065 const char *progpath;
4066 const char *argv[6];
4074 "Unable to autolaunch when setuid");
4078 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4091 if (display ==
NULL || display[0] ==
'\0')
4094 "Unable to autolaunch a dbus-daemon without a $DISPLAY for X11");
4100 _DBUS_SET_OOM (error);
4109 #ifdef DBUS_ENABLE_EMBEDDED_TESTS 4112 if (progpath ==
NULL)
4114 progpath = DBUS_BINDIR
"/dbus-launch";
4121 argv[i] = arg_dbus_launch;
4123 argv[i] = arg_autolaunch;
4125 argv[i] = _dbus_string_get_data (&uuid);
4127 argv[i] = arg_binary_syntax;
4129 argv[i] = arg_close_stderr;
4136 retval = _read_subprocess_line_argv (progpath,
4138 argv, address, error);
4145 "Using X11 for dbus-daemon autolaunch was disabled at compile time, " 4146 "set your DBUS_SESSION_BUS_ADDRESS instead");
4191 if (create_if_not_found)
4203 if (!create_if_not_found)
4206 "D-Bus library appears to be incorrectly set up: " 4207 "see the manual page for dbus-uuidgen to correct " 4208 "this issue. (%s; %s)",
4236 const char *launchd_env_var,
4239 #ifdef DBUS_ENABLE_LAUNCHD 4243 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4248 "Unable to find launchd socket when setuid");
4253 argv[i] =
"launchctl";
4257 argv[i] = (
char*)launchd_env_var;
4264 if (!_read_subprocess_line_argv(argv[0],
TRUE, argv, socket_path, error))
4270 if (_dbus_string_get_length(socket_path) == 0)
4280 "can't lookup socket from launchd; launchd support not compiled in");
4285 #ifdef DBUS_ENABLE_LAUNCHD 4295 "Unable to find launchd socket when setuid");
4301 _DBUS_SET_OOM (error);
4316 "launchd did not provide a socket path, " 4317 "verify that org.freedesktop.dbus-session.plist is loaded!");
4323 _DBUS_SET_OOM (error);
4328 _dbus_string_get_length (address)))
4330 _DBUS_SET_OOM (error);
4345 const char *runtime_dir =
_dbus_getenv (
"XDG_RUNTIME_DIR");
4350 if (runtime_dir ==
NULL)
4352 _dbus_verbose (
"XDG_RUNTIME_DIR not found in environment");
4359 _DBUS_SET_OOM (error);
4365 _DBUS_SET_OOM (error);
4369 if (lstat (_dbus_string_get_const_data (&user_bus_path), &stbuf) == -1)
4371 _dbus_verbose (
"XDG_RUNTIME_DIR/bus not available: %s",
4372 _dbus_strerror (errno));
4378 if (stbuf.st_uid != getuid ())
4380 _dbus_verbose (
"XDG_RUNTIME_DIR/bus owned by uid %ld, not our uid %ld",
4381 (
long) stbuf.st_uid, (
long) getuid ());
4387 if ((stbuf.st_mode & S_IFMT) != S_IFSOCK)
4389 _dbus_verbose (
"XDG_RUNTIME_DIR/bus is not a socket: st_mode = 0o%lo",
4390 (
long) stbuf.st_mode);
4399 _DBUS_SET_OOM (error);
4435 #ifdef DBUS_ENABLE_LAUNCHD 4437 return _dbus_lookup_session_address_launchd (address, error);
4441 if (!_dbus_lookup_user_bus (supported, address, error))
4443 else if (*supported)
4501 #ifdef DBUS_ENABLE_EMBEDDED_TESTS 4503 const char *
override;
4506 if (
override !=
NULL && *
override !=
'\0')
4512 _dbus_verbose (
"Using fake homedir for testing: %s\n",
4513 _dbus_string_get_const_data (&homedir));
4520 if (!already_warned)
4522 _dbus_warn (
"Using %s for testing, set DBUS_TEST_HOMEDIR to avoid",
4523 _dbus_string_get_const_data (&homedir));
4524 already_warned =
TRUE;
4536 directory, _dbus_string_get_length (directory))) {
4550 _dbus_daemon_publish_session_bus_address (
const char* addr,
4558 _dbus_daemon_unpublish_session_bus_address (
void)
4576 #if EAGAIN == EWOULDBLOCK 4579 return e == EAGAIN || e == EWOULDBLOCK;
4594 const char *filename_c;
4596 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
4598 filename_c = _dbus_string_get_const_data (filename);
4600 if (rmdir (filename_c) != 0)
4603 "Failed to remove directory %s: %s\n",
4604 filename_c, _dbus_strerror (errno));
4624 struct sockaddr_storage storage;
4625 struct sockaddr_un un;
4628 socklen_t sa_len =
sizeof(sa_buf);
4632 if (getsockname(fd.fd, &sa_buf.sa, &sa_len) < 0)
4635 return sa_buf.sa.sa_family == AF_UNIX;
4658 d = opendir (
"/proc/self/fd");
4672 if (de->d_name[0] ==
'.')
4676 l = strtol (de->d_name, &e, 10);
4677 if (errno != 0 || e ==
NULL || *e !=
'\0')
4684 if (fd == dirfd (d))
4695 maxfds = sysconf (_SC_OPEN_MAX);
4704 for (i = 3; i < maxfds; i++)
4723 #if 0 && defined(HAVE_LIBC_ENABLE_SECURE) 4726 extern int __libc_enable_secure;
4727 return __libc_enable_secure;
4729 #elif defined(HAVE_ISSETUGID) 4731 return issetugid ();
4733 uid_t ruid, euid, suid;
4734 gid_t rgid, egid, sgid;
4741 if (_DBUS_UNLIKELY (!check_setuid_initialised))
4743 #ifdef HAVE_GETRESUID 4744 if (getresuid (&ruid, &euid, &suid) != 0 ||
4745 getresgid (&rgid, &egid, &sgid) != 0)
4748 suid = ruid = getuid ();
4749 sgid = rgid = getgid ();
4754 check_setuid_initialised =
TRUE;
4755 is_setuid = (ruid != euid || ruid != suid ||
4756 rgid != egid || rgid != sgid);
4777 struct sockaddr_storage storage;
4778 struct sockaddr_un un;
4779 struct sockaddr_in ipv4;
4780 struct sockaddr_in6 ipv6;
4782 char hostip[INET6_ADDRSTRLEN];
4783 socklen_t size =
sizeof (socket);
4786 if (getsockname (fd.fd, &socket.sa, &size))
4789 switch (socket.sa.sa_family)
4792 if (socket.un.sun_path[0]==
'\0')
4808 if (inet_ntop (AF_INET, &socket.ipv4.sin_addr, hostip, sizeof (hostip)))
4810 hostip, ntohs (socket.ipv4.sin_port)))
4816 if (inet_ntop (AF_INET6, &socket.ipv6.sin6_addr, hostip, sizeof (hostip)))
4818 ntohs (socket.ipv6.sin6_port)) &&
4826 "Failed to read address from socket: Unknown socket type.");
4832 "Failed to open socket: %s",
4833 _dbus_strerror (errno));
4838 _dbus_save_socket_errno (
void)
4844 _dbus_restore_socket_errno (
int saved_errno)
4846 errno = saved_errno;
4849 static const char *syslog_tag =
"dbus";
4850 #ifdef HAVE_SYSLOG_H 4851 static DBusLogFlags log_flags = DBUS_LOG_FLAGS_STDERR;
4874 (flags & (DBUS_LOG_FLAGS_STDERR | DBUS_LOG_FLAGS_SYSTEM_LOG)) != 0);
4878 #ifdef HAVE_SYSLOG_H 4881 if (log_flags & DBUS_LOG_FLAGS_SYSTEM_LOG)
4882 openlog (tag, LOG_PID, LOG_DAEMON);
4899 #ifdef HAVE_SYSLOG_H 4900 if (log_flags & DBUS_LOG_FLAGS_SYSTEM_LOG)
4905 case DBUS_SYSTEM_LOG_INFO:
4906 flags = LOG_DAEMON | LOG_INFO;
4908 case DBUS_SYSTEM_LOG_WARNING:
4909 flags = LOG_DAEMON | LOG_WARNING;
4911 case DBUS_SYSTEM_LOG_SECURITY:
4912 flags = LOG_AUTH | LOG_NOTICE;
4914 case DBUS_SYSTEM_LOG_ERROR:
4915 flags = LOG_DAEMON|LOG_CRIT;
4921 DBUS_VA_COPY (tmp, args);
4922 vsyslog (flags, msg, tmp);
4928 if (log_flags & DBUS_LOG_FLAGS_STDERR)
4931 DBUS_VA_COPY (tmp, args);
4933 vfprintf (stderr, msg, tmp);
4934 fputc (
'\n', stderr);
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_string_parse_int(const DBusString *str, int start, long *value_return, int *end_return)
Parses an integer contained in a DBusString.
An atomic integer safe to increment or decrement from multiple threads.
dbus_uid_t _dbus_credentials_get_unix_uid(DBusCredentials *credentials)
Gets the UNIX user ID in the credentials, or DBUS_UID_UNSET if the credentials object doesn't contain...
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_string_append_uint(DBusString *str, unsigned long value)
Appends an unsigned integer to a DBusString.
const char * message
public error message field
#define NULL
A null pointer, defined appropriately for C or C++.
#define DBUS_ERROR_SPAWN_EXEC_FAILED
While starting a new process, the exec() call failed.
volatile dbus_int32_t value
Value of the atomic integer.
dbus_bool_t _dbus_check_dir_is_private_to_user(DBusString *dir, DBusError *error)
Checks to make sure the given directory is private to the user.
dbus_bool_t _dbus_read_local_machine_uuid(DBusGUID *machine_id, dbus_bool_t create_if_not_found, DBusError *error)
Reads the uuid of the machine we're running on from the dbus configuration.
void _dbus_close_all(void)
Closes all file descriptors except the first three (i.e.
dbus_bool_t _dbus_string_lengthen(DBusString *str, int additional_length)
Makes a string longer by the given number of bytes.
dbus_bool_t _dbus_ensure_directory(const DBusString *filename, DBusError *error)
Creates a directory; succeeds if the directory is created or already existed.
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
dbus_bool_t _dbus_socketpair(DBusSocket *fd1, DBusSocket *fd2, dbus_bool_t blocking, DBusError *error)
Creates pair of connect sockets (as in socketpair()).
int _dbus_write(int fd, const DBusString *buffer, int start, int len)
Thin wrapper around the write() system call that writes a part of a DBusString and handles EINTR for ...
dbus_bool_t _dbus_ensure_standard_fds(DBusEnsureStandardFdsFlags flags, const char **error_str_p)
Ensure that the standard file descriptors stdin, stdout and stderr are open, by opening /dev/null if ...
#define DBUS_ERROR_NOT_SUPPORTED
Requested operation isn't supported (like ENOSYS on UNIX).
#define dbus_new(type, count)
Safe macro for using dbus_malloc().
#define DBUS_GID_FORMAT
an appropriate printf format for dbus_gid_t
#define DBUS_PID_FORMAT
an appropriate printf format for dbus_pid_t
dbus_bool_t _dbus_generate_uuid(DBusGUID *uuid, DBusError *error)
Generates a new UUID.
dbus_bool_t _dbus_get_local_machine_uuid_encoded(DBusString *uuid_str, DBusError *error)
Gets the hex-encoded UUID of the machine this function is executed on.
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
dbus_bool_t _dbus_append_address_from_socket(DBusSocket fd, DBusString *address, DBusError *error)
Read the address from the socket and append it to the string.
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
dbus_bool_t _dbus_check_setuid(void)
NOTE: If you modify this function, please also consider making the corresponding change in GLib...
void _dbus_user_database_flush_system(void)
Flushes the system global user database;.
void dbus_error_free(DBusError *error)
Frees an error that's been set (or just initialized), then reinitializes the error as in dbus_error_i...
dbus_gid_t primary_gid
GID.
dbus_bool_t _dbus_credentials_add_linux_security_label(DBusCredentials *credentials, const char *label)
Add a Linux security label, as used by LSMs such as SELinux, Smack and AppArmor, to the credentials...
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...
dbus_pid_t _dbus_getpid(void)
Gets our process ID.
#define _DBUS_POLLIN
There is data to read.
dbus_bool_t _dbus_concat_dir_and_file(DBusString *dir, const DBusString *next_component)
Appends the given filename to the given directory.
char * _dbus_string_get_data_len(DBusString *str, int start, int len)
Gets a sub-portion of the raw character buffer from the string.
int _dbus_read_socket(DBusSocket fd, DBusString *buffer, int count)
Like _dbus_read(), but only works on sockets so is available on Windows.
#define DBUS_MAXIMUM_MESSAGE_UNIX_FDS
The maximum total number of unix fds in a message.
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
#define DBUS_ERROR_IO_ERROR
Something went wrong reading or writing to a socket, for example.
int _dbus_dup(int fd, DBusError *error)
Duplicates a file descriptor.
void _dbus_string_shorten(DBusString *str, int length_to_remove)
Makes a string shorter by the given number of bytes.
short events
Events to poll for.
dbus_bool_t _dbus_string_copy(const DBusString *source, int start, DBusString *dest, int insert_at)
Like _dbus_string_move(), but does not delete the section of the source string that's copied to the d...
#define DBUS_PID_UNSET
an invalid PID used to represent an uninitialized dbus_pid_t field
dbus_bool_t _dbus_send_credentials_socket(DBusSocket server_fd, DBusError *error)
Sends a single nul byte with our UNIX credentials as ancillary data.
dbus_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket.
void _dbus_credentials_clear(DBusCredentials *credentials)
Clear all credentials in the object.
#define DBUS_UID_UNSET
an invalid UID used to represent an uninitialized dbus_uid_t field
dbus_bool_t _dbus_parse_uid(const DBusString *uid_str, dbus_uid_t *uid)
Gets a UID from a UID string.
dbus_bool_t _dbus_get_autolaunch_address(const char *scope, DBusString *address, DBusError *error)
Returns the address of a new session bus.
const char * _dbus_error_from_errno(int error_number)
Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.
dbus_bool_t _dbus_user_info_fill(DBusUserInfo *info, const DBusString *username, DBusError *error)
Gets user info for the given username.
dbus_bool_t _dbus_homedir_from_uid(dbus_uid_t uid, DBusString *homedir)
Gets the home directory for the given user.
unsigned long dbus_pid_t
A process ID.
dbus_gid_t * group_ids
Groups IDs, including above primary group.
dbus_bool_t _dbus_lookup_launchd_socket(DBusString *socket_path, const char *launchd_env_var, DBusError *error)
quries launchd for a specific env var which holds the socket path.
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
dbus_bool_t _dbus_append_user_from_current_process(DBusString *str)
Append to the string the identity we would like to have when we authenticate, on UNIX this is the cur...
dbus_bool_t _dbus_credentials_are_anonymous(DBusCredentials *credentials)
Checks whether a credentials object contains a user identity.
dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock(int e)
See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently for Winsock so is abstracted) ...
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
void _dbus_string_init_const(DBusString *str, const char *value)
Initializes a constant string.
int n_group_ids
Size of group IDs array.
int _dbus_listen_systemd_sockets(DBusSocket **fds, DBusError *error)
Acquires one or more sockets passed in from systemd.
#define _DBUS_POLLOUT
Writing now will not block.
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
int _dbus_write_socket_two(DBusSocket fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write_two() but only works on sockets and is thus available on Windows.
DBusSocket _dbus_accept(DBusSocket listen_fd)
Accepts a connection on a listening socket.
dbus_bool_t _dbus_string_init_preallocated(DBusString *str, int allocate_size)
Initializes a string that can be up to the given allocation size before it has to realloc...
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr.
int _dbus_read(int fd, DBusString *buffer, int count)
Thin wrapper around the read() system call that appends the data it reads to the DBusString buffer...
dbus_bool_t _dbus_string_append_printf(DBusString *str, const char *format,...)
Appends a printf-style formatted string to the DBusString.
dbus_bool_t _dbus_append_keyring_directory_for_credentials(DBusString *directory, DBusCredentials *credentials)
Appends the directory in which a keyring for the given credentials should be stored.
dbus_bool_t _dbus_read_credentials_socket(DBusSocket client_fd, DBusCredentials *credentials, DBusError *error)
Reads a single byte which must be nul (an error occurs otherwise), and reads unix credentials if avai...
dbus_bool_t _dbus_create_directory(const DBusString *filename, DBusError *error)
Creates a directory.
dbus_bool_t _dbus_delete_directory(const DBusString *filename, DBusError *error)
Removes a directory; Directory must be empty.
Object representing an exception.
dbus_bool_t _dbus_address_append_escaped(DBusString *escaped, const DBusString *unescaped)
Appends an escaped version of one string to another string, using the D-Bus address escaping mechanis...
void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
int _dbus_listen_tcp_socket(const char *host, const char *port, const char *family, DBusString *retport, DBusSocket **fds_p, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
#define DBUS_ERROR_BAD_ADDRESS
A D-Bus bus address was malformed.
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
dbus_bool_t _dbus_credentials_add_adt_audit_data(DBusCredentials *credentials, void *audit_data, dbus_int32_t size)
Add ADT audit data to the credentials.
#define _DBUS_N_ELEMENTS(array)
Computes the number of elements in a fixed-size array using sizeof().
int _dbus_read_socket_with_unix_fds(DBusSocket fd, DBusString *buffer, int count, int *fds, unsigned int *n_fds)
Like _dbus_read_socket() but also tries to read unix fds from the socket.
void _dbus_flush_caches(void)
Called when the bus daemon is signaled to reload its configuration; any caches should be nuked...
int _dbus_connect_exec(const char *path, char *const argv[], DBusError *error)
Creates a UNIX domain socket and connects it to the specified process to execute. ...
const char * _dbus_get_tmpdir(void)
Gets the temporary files directory by inspecting the environment variables TMPDIR, TMP, and TEMP in that order.
dbus_bool_t _dbus_string_append_byte(DBusString *str, unsigned char byte)
Appends a single byte to the string, returning FALSE if not enough memory.
#define _DBUS_UNLOCK(name)
Unlocks a global lock.
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
#define DBUS_GID_UNSET
an invalid GID used to represent an uninitialized dbus_gid_t field
dbus_uid_t _dbus_geteuid(void)
Gets our effective UID.
dbus_bool_t _dbus_credentials_add_from_current_process(DBusCredentials *credentials)
Adds the credentials of the current process to the passed-in credentials object.
#define TRUE
Expands to "1".
DBusPollable fd
File descriptor.
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
dbus_bool_t _dbus_credentials_add_pid(DBusCredentials *credentials, dbus_pid_t pid)
Add a UNIX process ID to the credentials.
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
const char * name
public error name field
#define READ_END
Helps remember which end of the pipe is which.
#define DBUS_UID_FORMAT
an appropriate printf format for dbus_uid_t
dbus_bool_t _dbus_read_uuid_file(const DBusString *filename, DBusGUID *uuid, dbus_bool_t create_if_not_found, DBusError *error)
Reads (and optionally writes) a uuid to a file.
char * homedir
Home directory.
void _dbus_exit(int code)
Exit the process, returning the given value.
unsigned long _dbus_pid_for_log(void)
The only reason this is separate from _dbus_getpid() is to allow it on Windows for logging but not fo...
void _dbus_fd_set_close_on_exec(int fd)
Sets the file descriptor to be close on exec.
DBusSocket _dbus_connect_tcp_socket(const char *host, const char *port, const char *family, DBusError *error)
Creates a socket and connects to a socket at the given host and port.
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
dbus_uid_t _dbus_getuid(void)
Gets our UID.
void _dbus_init_system_log(const char *tag, DBusLogFlags flags)
Initialize the system log.
dbus_bool_t _dbus_generate_random_bytes(DBusString *str, int n_bytes, DBusError *error)
Generates the given number of securely random bytes, using the best mechanism we can come up with...
dbus_bool_t _dbus_user_info_fill_uid(DBusUserInfo *info, dbus_uid_t uid, DBusError *error)
Gets user info for the given user ID.
dbus_bool_t _dbus_set_socket_nonblocking(DBusSocket fd, DBusError *error)
Sets a file descriptor to be nonblocking.
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
dbus_bool_t _dbus_lookup_session_address(dbus_bool_t *supported, DBusString *address, DBusError *error)
Determines the address of the session bus by querying a platform-specific method. ...
dbus_bool_t _dbus_close(int fd, DBusError *error)
Closes a file descriptor.
void _dbus_logv(DBusSystemLogSeverity severity, const char *msg, va_list args)
Log a message to the system log file (e.g.
#define FALSE
Expands to "0".
dbus_bool_t _dbus_write_uuid_file(const DBusString *filename, const DBusGUID *uuid, DBusError *error)
Write the give UUID to a file.
void dbus_set_error_const(DBusError *error, const char *name, const char *message)
Assigns an error name and message to a DBusError.
dbus_bool_t _dbus_string_set_length(DBusString *str, int length)
Sets the length of a string.
#define _DBUS_LOCK(name)
Locks a global lock, initializing it first if necessary.
int _dbus_write_socket(DBusSocket fd, const DBusString *buffer, int start, int len)
Like _dbus_write(), but only supports sockets and is thus available on Windows.
int _dbus_write_two(int fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2)
Like _dbus_write() but will use writev() if possible to write both buffers in sequence.
void * dbus_malloc0(size_t bytes)
Allocates the given number of bytes, as with standard malloc(), but all bytes are initialized to zero...
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
DBUS_PRIVATE_EXPORT void _dbus_verbose_bytes_of_string(const DBusString *str, int start, int len)
Dump the given part of the string to verbose log.
#define WRITE_END
Helps remember which end of the pipe is which.
unsigned long dbus_gid_t
A group ID.
void * dbus_realloc(void *memory, size_t bytes)
Resizes a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
int _dbus_printf_string_upper_bound(const char *format, va_list args)
Measure the length of the given format string and arguments, not including the terminating nul...
char * _dbus_strdup(const char *str)
Duplicates a string.
#define _DBUS_ZERO(object)
Sets all bits in an object to zero.
dbus_bool_t _dbus_credentials_add_unix_uid(DBusCredentials *credentials, dbus_uid_t uid)
Add a UNIX user ID to the credentials.
dbus_bool_t _dbus_socket_can_pass_unix_fd(DBusSocket fd)
Checks whether file descriptors may be passed via the socket.
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
unsigned long dbus_uid_t
A user ID.
int _dbus_poll(DBusPollFD *fds, int n_fds, int timeout_milliseconds)
Wrapper for poll().
short revents
Events that occurred.
int _dbus_connect_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and connects it to the UNIX domain socket at the given path.
dbus_bool_t dbus_error_is_set(const DBusError *error)
Checks whether an error occurred (the error is set).
int _dbus_listen_unix_socket(const char *path, dbus_bool_t abstract, DBusError *error)
Creates a socket and binds it to the given path, then listens on the socket.
void _dbus_get_real_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
Information about a UNIX user.
#define _DBUS_POLLERR
Error condition.