mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-15 19:09:58 +08:00
5582abd2c7
* libc/include/stdio.h: Change definition of fpos_t to fulfill Cygwin 64bit file access requirements. Drop definition of f*64() functions when compiled for Cygwin. * libc/include/sys/config.h: Define __LARGE64_FILES for Cygwin. * libc/reent/lseek64r.c: Use _off64_t instead of off64_t. * libc/stdio64/local64.h: Use _fpos64_t instead of fpos64_t.
69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
/* Reentrant versions of lseek system call. */
|
|
|
|
#include <reent.h>
|
|
#include <unistd.h>
|
|
#include <_syslist.h>
|
|
|
|
/* Some targets provides their own versions of this functions. Those
|
|
targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */
|
|
|
|
#ifdef __LARGE64_FILES
|
|
|
|
#ifdef _REENT_ONLY
|
|
#ifndef REENTRANT_SYSCALLS_PROVIDED
|
|
#define REENTRANT_SYSCALLS_PROVIDED
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef REENTRANT_SYSCALLS_PROVIDED
|
|
|
|
/* We use the errno variable used by the system dependent layer. */
|
|
#undef errno
|
|
extern int errno;
|
|
|
|
/*
|
|
FUNCTION
|
|
<<_lseek64_r>>---Reentrant version of lseek
|
|
|
|
INDEX
|
|
_lseek64_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <reent.h>
|
|
off64_t _lseek64_r(struct _reent *<[ptr]>,
|
|
int <[fd]>, off64_t <[pos]>, int <[whence]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <reent.h>
|
|
off64_t _lseek64_r(<[ptr]>, <[fd]>, <[pos]>, <[whence]>)
|
|
struct _reent *<[ptr]>;
|
|
int <[fd]>;
|
|
off64_t <[pos]>;
|
|
int <[whence]>;
|
|
|
|
DESCRIPTION
|
|
This is a reentrant version of <<lseek64>>. It
|
|
takes a pointer to the global data block, which holds
|
|
<<errno>>. This function only exists on a system
|
|
with large file support.
|
|
*/
|
|
|
|
_off64_t
|
|
_lseek64_r (ptr, fd, pos, whence)
|
|
struct _reent *ptr;
|
|
int fd;
|
|
_off64_t pos;
|
|
int whence;
|
|
{
|
|
_off64_t ret;
|
|
|
|
errno = 0;
|
|
if ((ret = _lseek64 (fd, pos, whence)) == (_off64_t) -1 && errno != 0)
|
|
ptr->_errno = errno;
|
|
return ret;
|
|
}
|
|
|
|
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
|
|
|
|
#endif /* __LARGE64_FILES */
|