diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/preadv64.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/preadv64.c | 60 |
1 files changed, 55 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/preadv64.c b/sysdeps/unix/sysv/linux/preadv64.c index 936ff1426c..5f4fba55e7 100644 --- a/sysdeps/unix/sysv/linux/preadv64.c +++ b/sysdeps/unix/sysv/linux/preadv64.c @@ -1,6 +1,56 @@ -#define PREADV preadv64 -#define PREADV_REPLACEMENT __atomic_preadv64_replacement -#define PREAD __libc_pread64 -#define OFF_T off64_t +/* Copyright (C) 2016-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. -#include "preadv.c" + 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 <sys/uio.h> +#include <sysdep-cancel.h> + +#ifdef __ASSUME_PREADV + +# ifndef __NR_preadv64 +# define __NR_preadv64 __NR_preadv +# endif + +ssize_t +preadv64 (int fd, const struct iovec *vector, int count, off64_t offset) +{ + return SYSCALL_CANCEL (preadv64, fd, vector, count, LO_HI_LONG (offset)); +} +#else +static ssize_t __atomic_preadv64_replacement (int, const struct iovec *, + int, off64_t); +ssize_t +preadv64 (int fd, const struct iovec *vector, int count, off64_t offset) +{ +#ifdef __NR_preadv64 + ssize_t result = SYSCALL_CANCEL (preadv64, fd, vector, count, + LO_HI_LONG (offset)); + if (result >= 0 || errno != ENOSYS) + return result; +#endif + return __atomic_preadv64_replacement (fd, vector, count, offset); +} +# define PREADV static __atomic_preadv64_replacement +# define PREAD __pread64 +# define OFF_T off64_t +# include <sysdeps/posix/preadv_common.c> +#endif +libc_hidden_def (preadv64) + +#ifdef __OFF_T_MATCHES_OFF64_T +strong_alias (preadv64, preadv) +libc_hidden_def (preadv) +#endif |