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/* Reentrant versions of execution system calls. These
implementations just call the usual system calls. */
#include <reent.h>
#include <unistd.h>
#include <sys/wait.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
/* If NO_EXEC is defined, we don't need these functions. */
#if defined (REENTRANT_SYSCALLS_PROVIDED) || defined (NO_EXEC)
int _dummy_exec_syscalls = 1;
#else
/* We use the errno variable used by the system dependent layer. */
#undef errno
extern int errno;
/*
FUNCTION
<<_execve_r>>---Reentrant version of execve
INDEX
_execve_r
ANSI_SYNOPSIS
#include <reent.h>
int _execve_r(struct _reent *<[ptr]>, const char *<[name]>,
char *const <[argv]>[], char *const <[env]>[]);
TRAD_SYNOPSIS
#include <reent.h>
int _execve_r(<[ptr]>, <[name]>, <[argv]>, <[env]>)
struct _reent *<[ptr]>;
char *<[name]>;
char *<[argv]>[];
char *<[env]>[];
DESCRIPTION
This is a reentrant version of <<execve>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_DEFUN (_execve_r, (ptr, name, argv, env),
struct _reent *ptr _AND
_CONST char *name _AND
char *_CONST argv[] _AND
char *_CONST env[])
{
int ret;
errno = 0;
if ((ret = _execve (name, argv, env)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
/*
FUNCTION
<<_fork_r>>---Reentrant version of fork
INDEX
_fork_r
ANSI_SYNOPSIS
#include <reent.h>
int _fork_r(struct _reent *<[ptr]>);
TRAD_SYNOPSIS
#include <reent.h>
int _fork_r(<[ptr]>)
struct _reent *<[ptr]>;
DESCRIPTION
This is a reentrant version of <<fork>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
#ifndef NO_FORK
int
_DEFUN (_fork_r, (ptr),
struct _reent *ptr)
{
int ret;
errno = 0;
if ((ret = _fork ()) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
#endif
/*
FUNCTION
<<_wait_r>>---Reentrant version of wait
INDEX
_wait_r
ANSI_SYNOPSIS
#include <reent.h>
int _wait_r(struct _reent *<[ptr]>, int *<[status]>);
TRAD_SYNOPSIS
#include <reent.h>
int _wait_r(<[ptr]>, <[status]>)
struct _reent *<[ptr]>;
int *<[status]>;
DESCRIPTION
This is a reentrant version of <<wait>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_DEFUN (_wait_r, (ptr, status),
struct _reent *ptr _AND
int *status)
{
int ret;
errno = 0;
if ((ret = _wait (status)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
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