diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/posix_fadvise64.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/posix_fadvise64.c | 47 |
1 files changed, 34 insertions, 13 deletions
diff --git a/sysdeps/unix/sysv/linux/posix_fadvise64.c b/sysdeps/unix/sysv/linux/posix_fadvise64.c index 6d10558a5e..61dfe894ee 100644 --- a/sysdeps/unix/sysv/linux/posix_fadvise64.c +++ b/sysdeps/unix/sysv/linux/posix_fadvise64.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2003-2016 Free Software Foundation, Inc. +/* Copyright (C) 2003-2018 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 @@ -17,10 +17,22 @@ #include <errno.h> #include <fcntl.h> -#include <sysdep.h> +#include <shlib-compat.h> int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise); -int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise); +libc_hidden_proto (__posix_fadvise64_l64) + +/* Both arm and powerpc implements fadvise64_64 with last 'advise' argument + just after 'fd' to avoid the requirement of implementing 7-arg syscalls. + ARM also defines __NR_fadvise64_64 as __NR_arm_fadvise64_64. + + s390 implements fadvice64_64 using a specific struct with arguments + packed inside. This is the only implementation handled in arch-specific + code. */ + +#ifndef __NR_fadvise64_64 +# define __NR_fadvise64_64 __NR_fadvise64 +#endif /* Advice the system about the expected behaviour of the application with respect to the file associated with FD. */ @@ -29,20 +41,24 @@ int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise) { INTERNAL_SYSCALL_DECL (err); - int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, - __LONG_LONG_PAIR ((long) (offset >> 32), - (long) offset), - __LONG_LONG_PAIR ((long) (len >> 32), - (long) len), - advise); +#ifdef __ASSUME_FADVISE64_64_6ARG + int ret = INTERNAL_SYSCALL_CALL (fadvise64_64, err, fd, advise, + SYSCALL_LL64 (offset), SYSCALL_LL64 (len)); +#else + int ret = INTERNAL_SYSCALL_CALL (fadvise64_64, err, fd, + __ALIGNMENT_ARG SYSCALL_LL64 (offset), + SYSCALL_LL64 (len), advise); +#endif if (!INTERNAL_SYSCALL_ERROR_P (ret, err)) return 0; return INTERNAL_SYSCALL_ERRNO (ret, err); } -#include <shlib-compat.h> - -#if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3) +/* The type of the len argument was changed from size_t to off_t in + POSIX.1-2003 TC1. */ +#ifndef __OFF_T_MATCHES_OFF64_T +# if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3) +int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise); int attribute_compat_text_section @@ -53,6 +69,11 @@ __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise) versioned_symbol (libc, __posix_fadvise64_l64, posix_fadvise64, GLIBC_2_3_3); compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2); +# else +weak_alias (__posix_fadvise64_l64, posix_fadvise64); +# endif #else -strong_alias (__posix_fadvise64_l64, posix_fadvise64); +weak_alias (__posix_fadvise64_l64, posix_fadvise64); +strong_alias (__posix_fadvise64_l64, posix_fadvise); #endif +libc_hidden_def (__posix_fadvise64_l64) |