projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 04277e02 | 1 | /* Copyright (C) 1992-2019 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) |