diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-06-26 09:29:11 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-11-30 13:13:03 -0300 |
| commit | efc6b2dbc47231dee7a7ac39beec808deb4e4d1f (patch) | |
| tree | f5686babdb8325e2bbe9a41e36e0f9c26006c095 /sysdeps/unix/sysv/linux/pipe.c | |
| parent | 5b3e31e3124bf89710e5c25176c70fdf66c2a212 (diff) | |
| download | glibc-efc6b2dbc47231dee7a7ac39beec808deb4e4d1f.tar glibc-efc6b2dbc47231dee7a7ac39beec808deb4e4d1f.tar.gz glibc-efc6b2dbc47231dee7a7ac39beec808deb4e4d1f.tar.bz2 glibc-efc6b2dbc47231dee7a7ac39beec808deb4e4d1f.zip | |
linux: Implement pipe in terms of __NR_pipe2
The syscall pipe2 was added in linux 2.6.27 and glibc requires linux
3.2.0. The patch removes the arch-specific implementation for alpha,
ia64, mips, sh, and sparc which requires a different kernel ABI
than the usual one.
Checked on x86_64-linux-gnu and with a build for the affected ABIs.
Diffstat (limited to 'sysdeps/unix/sysv/linux/pipe.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/pipe.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/pipe.c b/sysdeps/unix/sysv/linux/pipe.c new file mode 100644 index 0000000000..c873bed11a --- /dev/null +++ b/sysdeps/unix/sysv/linux/pipe.c @@ -0,0 +1,32 @@ +/* Create create pipe. Linux generic version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include <unistd.h> +#include <sysdep.h> + +/* Create a one-way communication channel (__pipe). + If successful, two file descriptors are stored in PIPEDES; + bytes written on PIPEDES[1] can be read from PIPEDES[0]. + Returns 0 if successful, -1 if not. */ +int +__pipe (int __pipedes[2]) +{ + return INLINE_SYSCALL_CALL (pipe2, (int *) __pipedes, 0); +} +libc_hidden_def (__pipe) +weak_alias (__pipe, pipe) |