diff options
Diffstat (limited to 'sysdeps/unix/pt-fcntl.c')
-rw-r--r-- | sysdeps/unix/pt-fcntl.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/unix/pt-fcntl.c b/sysdeps/unix/pt-fcntl.c new file mode 100644 index 0000000000..8113d52b86 --- /dev/null +++ b/sysdeps/unix/pt-fcntl.c @@ -0,0 +1,49 @@ +/* ABI compatibility for 'fcntl' symbol in libpthread ABI. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <fcntl.h> +#include <stdarg.h> +#include <shlib-compat.h> + +/* libpthread once had its own fcntl, though there was no apparent reason + for it. There is no use in having a separate symbol in libpthread, but + the historical ABI requires it. For static linking, there is no need to + provide anything here--the libc version will be linked in. For shared + library ABI compatibility, there must be __fcntl and fcntl symbols in + libpthread.so. */ + +#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_28) + +static int +fcntl_compat (int fd, int cmd, ...) +{ + void *arg; + va_list ap; + va_start (ap, cmd); + arg = va_arg (ap, void *); + va_end (ap); + return __libc_fcntl (fd, cmd, arg); +} + +weak_alias (fcntl_compat, fcntl_alias) +compat_symbol (libpthread, fcntl_alias, fcntl, GLIBC_2_0); + +weak_alias (fcntl_compat, __fcntl_alias) +compat_symbol (libpthread, __fcntl_alias, __fcntl, GLIBC_2_0); + +#endif |