diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/pread.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/pread.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/pread.c b/sysdeps/unix/sysv/linux/pread.c index a9461cab2e..cae3d62a5d 100644 --- a/sysdeps/unix/sysv/linux/pread.c +++ b/sysdeps/unix/sysv/linux/pread.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,13 +23,17 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pread +#include "kernel-features.h" + +#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0 extern ssize_t __syscall_pread (int fd, void *buf, size_t count, off_t offset_hi, off_t offset_lo); +# if __ASSUME_PREAD_SYSCALL == 0 static ssize_t __emulate_pread (int fd, void *buf, size_t count, off_t offset) internal_function; +# endif ssize_t @@ -43,16 +47,21 @@ __pread (fd, buf, count, offset) /* First try the syscall. */ result = INLINE_SYSCALL (pread, 5, fd, buf, count, 0, offset); +# if __ASSUME_PREAD_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pread (fd, buf, count, offset); +# endif return result; } weak_alias (__pread, pread) -#define __pread(fd, buf, count, offset) \ +# define __pread(fd, buf, count, offset) \ static internal_function __emulate_pread (fd, buf, count, offset) #endif -#include <sysdeps/posix/pread.c> + +#if __ASSUME_PREAD_SYSCALL == 0 +# include <sysdeps/posix/pread.c> +#endif |