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/*
* Copyright (c) 2004-2005 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "config.h"
#include <errno.h>
#ifdef __STDC__
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#ifndef lint
static const char rcsid[] = "$Sudo: sudo_noexec.c,v 1.11 2005/03/10 15:09:28 millert Exp $";
#endif /* lint */
/*
* Dummy versions of the execve() family of syscalls. We don't need
* to stub out all of them, just the ones that correspond to actual
* system calls (which varies by OS). Note that it is still possible
* to access the real syscalls via the syscall() interface but very
* few programs actually do that.
*/
#ifndef errno
extern int errno;
#endif
#define DUMMY_BODY \
{ \
errno = EACCES; \
return(-1); \
}
#ifdef __STDC__
#define DUMMY2(fn, t1, t2) \
int \
fn(t1 a1, t2 a2) \
DUMMY_BODY
#define DUMMY3(fn, t1, t2, t3) \
int \
fn(t1 a1, t2 a2, t3 a3) \
DUMMY_BODY
#define DUMMY_VA(fn, t1, t2) \
int \
fn(t1 a1, t2 a2, ...) \
DUMMY_BODY
#else /* !__STDC__ */
#define DUMMY2(fn, t1, t2) \
int \
fn(a1, a2) \
t1 a1; t2 a2; \
DUMMY_BODY
#define DUMMY3(fn, t1, t2, t3) \
int \
fn(a1, a2, a3) \
t1 a1; t2 a2; t3 a3; \
DUMMY_BODY
#define DUMMY_VA(fn, t1, t2) \
int \
fn(a1, a2, va_alist) \
t1 a1; t2 a2; va_dcl \
DUMMY_BODY
#endif /* !__STDC__ */
DUMMY_VA(execl, const char *, const char *)
DUMMY_VA(_execl, const char *, const char *)
DUMMY_VA(__execl, const char *, const char *)
DUMMY_VA(execle, const char *, const char *)
DUMMY_VA(_execle, const char *, const char *)
DUMMY_VA(__execle, const char *, const char *)
DUMMY_VA(execlp, const char *, const char *)
DUMMY_VA(_execlp, const char *, const char *)
DUMMY_VA(__execlp, const char *, const char *)
DUMMY2(execv, const char *, char * const *)
DUMMY2(_execv, const char *, char * const *)
DUMMY2(__execv, const char *, char * const *)
DUMMY2(execvp, const char *, char * const *)
DUMMY2(_execvp, const char *, char * const *)
DUMMY2(__execvp, const char *, char * const *)
DUMMY3(execvP, const char *, const char *, char * const *)
DUMMY3(_execvP, const char *, const char *, char * const *)
DUMMY3(__execvP, const char *, const char *, char * const *)
DUMMY3(execve, const char *, char * const *, char * const *)
DUMMY3(_execve, const char *, char * const *, char * const *)
DUMMY3(__execve, const char *, char * const *, char * const *)
DUMMY3(fexecve, int , char * const *, char * const *)
DUMMY3(_fexecve, int , char * const *, char * const *)
DUMMY3(__fexecve, int , char * const *, char * const *)
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