4ad4ba1740
still have an execv(2) system call, Linux 2.6 provides fexecve(2)
and it is not uncommon for libc to have underscore ('_') versions
of the functions to be used internally by the library. Instead of
stubbing all these out by hand, define a macro and let it do the
work. Extra exec functions pointed out by Reznic Valery.
74 lines
2.7 KiB
C
74 lines
2.7 KiB
C
/*
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* Copyright (c) 2004 Todd C. Miller <Todd.Miller@courtesan.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* 4. Products derived from this software may not be called "Sudo" nor
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* may "Sudo" appear in their names without specific prior written
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* permission from the author.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <errno.h>
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#ifndef lint
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static const char rcsid[] = "$Sudo$";
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#endif /* lint */
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/*
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* Dummy versions of the execve() family of syscalls. We don't need
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* to stub out all of them, just the ones that correspond to actual
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* system calls (which varies by OS). Note that it is still possible
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* to access the real syscalls via the syscall() interface but very
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* few programs actually do that.
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*/
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extern int errno;
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#define DUMMY(fn, args, atypes) \
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int \
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fn args \
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atypes \
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{ \
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errno = EACCES; \
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return(-1); \
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}
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DUMMY(execve, (path, argv, envp),
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const char *path; char *const argv[]; char *const envp[];)
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DUMMY(_execve, (path, argv, envp),
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const char *path; char *const argv[]; char *const envp[];)
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DUMMY(execv, (path, argv, envp),
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const char *path; char *const argv[];)
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DUMMY(_execv, (path, argv, envp),
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const char *path; char *const argv[];)
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DUMMY(fexecve, (fd, argv, envp),
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int fd; char *const argv[]; char *const envp[];)
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DUMMY(_fexecve, (fd, argv, envp),
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int fd; char *const argv[]; char *const envp[];)
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