1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/* Subset of uidswap.c from portable OpenSSH */
/* $OpenBSD: uidswap.c,v 1.35 2006/08/03 03:34:42 deraadt Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
* Code for uid-swapping.
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*/
#include "includes.h"
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include "log.h"
int setresuid(uid_t ruid, uid_t euid, uid_t suid)
{
#if defined(HAVE_SETRESUID) && !defined(BROKEN_SETRESUID)
if (setresuid(ruid, euid, suid) < 0)
fatal("setresuid %u: %.100s", (u_int)ruid, strerror(errno));
#elif defined(HAVE_SETREUID) && !defined(BROKEN_SETREUID)
if (setreuid(ruid, euid) < 0)
fatal("setreuid %u: %.100s", (u_int)ruid, strerror(errno));
#else
# ifndef SETEUID_BREAKS_SETUID
if (seteuid(euid) < 0)
fatal("seteuid %u: %.100s", (u_int)euid, strerror(errno));
# endif
if (setuid(ruid) < 0)
fatal("setuid %u: %.100s", (u_int)ruid, strerror(errno));
#endif
return (0);
}
|
