]>
Commit | Line | Data |
---|---|---|
581c785b | 1 | /* Copyright (C) 1992-2022 Free Software Foundation, Inc. |
de195be0 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 | |
38547460 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
de195be0 TS |
18 | |
19 | #include <errno.h> | |
20 | #include <sys/socket.h> | |
21 | #include <sys/stat.h> | |
22 | #include <unistd.h> | |
23 | #include <fcntl.h> | |
24 | #include <fcntl-internal.h> | |
25 | #include <hurd.h> | |
26 | ||
27 | /* Create a one-way communication channel (pipe). | |
28 | Actually the channel is two-way on the Hurd. | |
29 | If successful, two file descriptors are stored in FDS; | |
30 | bytes written on FDS[1] can be read from FDS[0]. | |
31 | Apply FLAGS to the new file descriptors. | |
32 | Returns 0 if successful, -1 if not. */ | |
33 | int | |
34 | __pipe2 (int fds[2], int flags) | |
35 | { | |
36 | int save_errno = errno; | |
37 | int result; | |
38 | ||
39 | if (flags & ~(O_CLOEXEC | O_NONBLOCK)) | |
40 | return __hurd_fail (EINVAL); | |
41 | ||
42 | flags = o_to_sock_flags (flags); | |
43 | ||
44 | /* The magic S_IFIFO protocol tells the pflocal server to create | |
45 | sockets which report themselves as FIFOs, as POSIX requires for | |
46 | pipes. */ | |
47 | result = __socketpair (PF_LOCAL, SOCK_STREAM | flags, S_IFIFO, fds); | |
48 | if (result == -1 && errno == EPROTONOSUPPORT) | |
49 | { | |
50 | /* We contacted an "old" pflocal server that doesn't support the | |
51 | magic S_IFIFO protocol. | |
52 | FIXME: Remove this junk somewhere in the future. */ | |
53 | __set_errno (save_errno); | |
54 | return __socketpair (PF_LOCAL, SOCK_STREAM | flags, 0, fds); | |
55 | } | |
56 | ||
57 | return result; | |
58 | } | |
59 | weak_alias (__pipe2, pipe2) |