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/* exec.cc: exec system call support.
Copyright 1996, 1997, 1998, 2000 Cygnus Solutions.
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. */
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <ctype.h>
#include <process.h>
#include "winsup.h"
/* This is called _execve and not execve because the real execve is defined
in libc/posix/execve.c. It calls us. */
extern "C"
pid_t
_execve (const char *path, const char *const argv[], const char *const envp[])
{
static char *const empty_env[] = { 0 };
MALLOC_CHECK;
if (!envp)
envp = empty_env;
return _spawnve (NULL, _P_OVERLAY, path, argv, envp);
}
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, *user_data->envptr);
}
extern "C"
int
execv (const char *path, char * const *argv)
{
MALLOC_CHECK;
return _execve (path, (char * const *) argv, *user_data->envptr);
}
/* the same as a standard exec() calls family, but with NT security support */
extern "C"
pid_t
sexecve (HANDLE hToken, const char *path, const char *const argv[],
const char *const envp[])
{
_spawnve (hToken, _P_OVERLAY, path, argv, envp);
return -1;
}
extern "C"
int
sexecl (HANDLE hToken, 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 sexecve (hToken, path, (char * const *) argv, *user_data->envptr);
}
extern "C"
int
sexecle (HANDLE hToken, const char *path, const char *arg0, ...)
{
int i;
va_list args;
const char * const *envp;
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);
envp = va_arg (args, const char * const *);
va_end (args);
MALLOC_CHECK;
return sexecve(hToken, path, (char * const *) argv, (char * const *) envp);
}
extern "C"
int
sexeclp (HANDLE hToken, 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 sexecvpe (hToken, path, (const char * const *) argv,
*user_data->envptr);
}
extern "C"
int
sexeclpe (HANDLE hToken, const char *path, const char *arg0, ...)
{
int i;
va_list args;
const char * const *envp;
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);
envp = va_arg (args, const char * const *);
va_end (args);
MALLOC_CHECK;
return sexecvpe (hToken, path, argv, envp);
}
extern "C"
int
sexecv (HANDLE hToken, const char *path, const char * const *argv)
{
MALLOC_CHECK;
return sexecve (hToken, path, argv, *user_data->envptr);
}
extern "C"
int
sexecp (HANDLE hToken, const char *path, const char * const *argv)
{
MALLOC_CHECK;
return sexecvpe (hToken, path, argv, *user_data->envptr);
}
/*
* 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
sexecvpe (HANDLE hToken, const char *file, const char * const *argv,
const char *const *envp)
{
char buf[MAXNAMLEN];
MALLOC_CHECK;
return sexecve (hToken, find_exec (file, buf), argv, envp);
}
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