Retro68/gcc/newlib/libc/reent/unlinkr.c
2012-03-27 01:51:53 +02:00

60 lines
1.2 KiB
C

/* Reentrant versions of file system calls. These implementations
just call the usual system calls. */
#include <reent.h>
#include <unistd.h>
#include <_syslist.h>
/* Some targets provides their own versions of these functions. Those
targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */
#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
<<_unlink_r>>---Reentrant version of unlink
INDEX
_unlink_r
ANSI_SYNOPSIS
#include <reent.h>
int _unlink_r(struct _reent *<[ptr]>, const char *<[file]>);
TRAD_SYNOPSIS
#include <reent.h>
int _unlink_r(<[ptr]>, <[file]>)
struct _reent *<[ptr]>;
char *<[file]>;
DESCRIPTION
This is a reentrant version of <<unlink>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_DEFUN (_unlink_r, (ptr, file),
struct _reent *ptr _AND
_CONST char *file)
{
int ret;
errno = 0;
if ((ret = _unlink (file)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */