projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d4697bc9 | 1 | /* Copyright (C) 1992-2014 Free Software Foundation, Inc. |
| eb43375f TS |
2 | |
| 3 | This file is part of the GNU C Library. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| febb44a4 TS |
16 | License along with the GNU C Library; see the file COPYING.LIB. If |
| 17 | not, see <http://www.gnu.org/licenses/>. */ | |
| eb43375f TS |
18 | |
| 19 | #include <errno.h> | |
| 20 | #include <fcntl.h> | |
| 21 | #include <fcntl-internal.h> | |
| 22 | #include <string.h> | |
| 23 | #include <sys/socket.h> | |
| 24 | #include <hurd.h> | |
| 25 | #include <hurd/fd.h> | |
| 26 | #include <hurd/socket.h> | |
| 27 | ||
| 28 | /* Await a connection on socket FD. | |
| 29 | When a connection arrives, open a new socket to communicate with it, | |
| 30 | set *ADDRARG (which is *ADDR_LEN bytes long) to the address of the connecting | |
| 31 | peer and *ADDR_LEN to the address's actual length, and return the | |
| 32 | new socket's descriptor, or -1 for errors. The operation can be influenced | |
| 33 | by the FLAGS parameter. */ | |
| 34 | int | |
| 35 | __libc_accept4 (int fd, __SOCKADDR_ARG addrarg, socklen_t *addr_len, int flags) | |
| 36 | { | |
| 37 | error_t err; | |
| 38 | socket_t new; | |
| 39 | addr_port_t aport; | |
| 40 | struct sockaddr *addr = addrarg.__sockaddr__; | |
| 41 | char *buf = (char *) addr; | |
| 42 | mach_msg_type_number_t buflen; | |
| 43 | int type; | |
| 44 | ||
| 45 | flags = sock_to_o_flags (flags); | |
| 46 | ||
| 47 | if (flags & ~(O_CLOEXEC | O_NONBLOCK)) | |
| 48 | return __hurd_fail (EINVAL); | |
| 49 | ||
| 50 | if (err = HURD_DPORT_USE (fd, __socket_accept (port, &new, &aport))) | |
| 51 | return __hurd_dfail (fd, err); | |
| 52 | ||
| 53 | if (addr != NULL) | |
| 54 | { | |
| 55 | buflen = *addr_len; | |
| 56 | err = __socket_whatis_address (aport, &type, &buf, &buflen); | |
| 57 | if (err == EOPNOTSUPP) | |
| 58 | /* If the protocol server can't tell us the address, just return a | |
| 59 | zero-length one. */ | |
| 60 | { | |
| 61 | buf = (char *)addr; | |
| 62 | buflen = 0; | |
| 63 | err = 0; | |
| 64 | } | |
| 65 | } | |
| 66 | __mach_port_deallocate (__mach_task_self (), aport); | |
| 67 | ||
| 68 | if (! err) | |
| 69 | { | |
| 70 | if (flags & O_NONBLOCK) | |
| 71 | err = __io_set_some_openmodes (new, O_NONBLOCK); | |
| 72 | /* TODO: do we need special ERR massaging after the previous call? */ | |
| 73 | } | |
| 74 | ||
| 75 | if (err) | |
| 76 | { | |
| 77 | __mach_port_deallocate (__mach_task_self (), new); | |
| 78 | return __hurd_dfail (fd, err); | |
| 79 | } | |
| 80 | ||
| 81 | if (addr != NULL) | |
| 82 | { | |
| 83 | if (*addr_len > buflen) | |
| 84 | *addr_len = buflen; | |
| 85 | ||
| 86 | if (buf != (char *) addr) | |
| 87 | { | |
| 88 | memcpy (addr, buf, *addr_len); | |
| 89 | __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen); | |
| 90 | } | |
| 91 | ||
| 92 | if (buflen > 0) | |
| 93 | addr->sa_family = type; | |
| 94 | } | |
| 95 | ||
| 96 | return _hurd_intern_fd (new, O_IGNORE_CTTY | flags, 1); | |
| 97 | } | |
| 98 | libc_hidden_def (__libc_accept4) | |
| 99 | weak_alias (__libc_accept4, accept4) |