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/* exec.cc: exec system call support.
Copyright 1996, 1997, 1998, 2000, 2001, 2002 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#define _execve __FOO_execve_
#include "winsup.h"
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <process.h>
#include "perprocess.h"
#include "security.h"
#include "fhandler.h"
#include "path.h"
#include "pinfo.h"
#include "environ.h"
#include "cygerrno.h"
#undef _execve
/* This is called _execve and not execve because the real execve is defined
in libc/posix/execve.c. It calls us. */
extern "C" int
execve (const char *path, char *const argv[], char *const envp[])
{
static char *const empty_env[] = { 0 };
MALLOC_CHECK;
if (!envp)
envp = empty_env;
return spawnve (_P_OVERLAY, path, argv, envp);
}
extern "C" int _execve (const char *, char *const [], char *const [])
__attribute__ ((alias ("execve")));
extern "C" int
execl (const char *path, const char *arg0, ...)
{
int i;
va_list args;
const char *argv[1024];
va_start (args, arg0);
argv[0] = arg0;
i = 1;
do
argv[i] = va_arg (args, const char *);
while (argv[i++] != NULL);
va_end (args);
MALLOC_CHECK;
return execve (path, (char * const *) argv, cur_environ ());
}
extern "C" int
execv (const char *path, char * const *argv)
{
MALLOC_CHECK;
return execve (path, (char * const *) argv, cur_environ ());
}
extern "C" pid_t
sexecve_is_bad ()
{
set_errno (ENOSYS);
return 0;
}
/*
* Copy string, until c or <nul> is encountered.
* NUL-terminate the destination string (s1).
* Return pointer to terminating byte in dst string.
*/
char * __stdcall
strccpy (char *s1, const char **s2, char c)
{
while (**s2 && **s2 != c)
*s1++ = *((*s2)++);
*s1 = 0;
MALLOC_CHECK;
return s1;
}
extern "C" int
execvp (const char *path, char * const *argv)
{
path_conv buf;
return execv (find_exec (path, buf), argv);
}
extern "C" int
execvpe (const char *path, char * const *argv, char *const *envp)
{
path_conv buf;
return execve (find_exec (path, buf), argv, envp);
}
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