67 lines
1.3 KiB
C
67 lines
1.3 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
|
|
|
|
#ifdef REENTRANT_SYSCALLS_PROVIDED
|
|
|
|
int _dummy_link_syscalls = 1;
|
|
|
|
#else
|
|
|
|
/* We use the errno variable used by the system dependent layer. */
|
|
#undef errno
|
|
extern int errno;
|
|
|
|
/*
|
|
FUNCTION
|
|
<<_link_r>>---Reentrant version of link
|
|
|
|
INDEX
|
|
_link_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <reent.h>
|
|
int _link_r(struct _reent *<[ptr]>,
|
|
const char *<[old]>, const char *<[new]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <reent.h>
|
|
int _link_r(<[ptr]>, <[old]>, <[new]>)
|
|
struct _reent *<[ptr]>;
|
|
char *<[old]>;
|
|
char *<[new]>;
|
|
|
|
DESCRIPTION
|
|
This is a reentrant version of <<link>>. It
|
|
takes a pointer to the global data block, which holds
|
|
<<errno>>.
|
|
*/
|
|
|
|
int
|
|
_DEFUN (_link_r, (ptr, old, new),
|
|
struct _reent *ptr _AND
|
|
_CONST char *old _AND
|
|
_CONST char *new)
|
|
{
|
|
int ret;
|
|
|
|
errno = 0;
|
|
if ((ret = _link (old, new)) == -1 && errno != 0)
|
|
ptr->_errno = errno;
|
|
return ret;
|
|
}
|
|
|
|
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
|