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/* $Id: platform.c,v 1.8 2010/11/05 01:50:41 dtucker Exp $ */
/*
* Copyright (c) 2006 Darren Tucker. All rights reserved.
*
* 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 "platform.h"
#include "openbsd-compat/openbsd-compat.h"
void
platform_pre_listen(void)
{
#ifdef LINUX_OOM_ADJUST
/* Adjust out-of-memory killer so listening process is not killed */
oom_adjust_setup();
#endif
}
void
platform_pre_fork(void)
{
#ifdef USE_SOLARIS_PROCESS_CONTRACTS
solaris_contract_pre_fork();
#endif
}
void
platform_post_fork_parent(pid_t child_pid)
{
#ifdef USE_SOLARIS_PROCESS_CONTRACTS
solaris_contract_post_fork_parent(child_pid);
#endif
}
void
platform_post_fork_child(void)
{
#ifdef USE_SOLARIS_PROCESS_CONTRACTS
solaris_contract_post_fork_child();
#endif
#ifdef LINUX_OOM_ADJUST
oom_adjust_restore();
#endif
}
/*
* This gets called before switching UIDs, and is called even when sshd is
* not running as root.
*/
void
platform_setusercontext(struct passwd *pw)
{
#ifdef WITH_SELINUX
/* Cache selinux status for later use */
(void)ssh_selinux_enabled();
#endif
#ifdef USE_SOLARIS_PROJECTS
/* if solaris projects were detected, set the default now */
if (getuid() == 0 || geteuid() == 0)
solaris_set_default_project(pw);
#endif
#if defined(HAVE_LOGIN_CAP) && defined (__bsdi__)
if (getuid() == 0 || geteuid() == 0)
setpgid(0, 0);
# endif
}
/*
* This gets called after we've established the user's groups, and is only
* called if sshd is running as root.
*/
void
platform_setusercontext_post_groups(struct passwd *pw)
{
#ifdef HAVE_SETPCRED
/*
* If we have a chroot directory, we set all creds except real
* uid which we will need for chroot. If we don't have a
* chroot directory, we don't override anything.
*/
{
char **creds = NULL, *chroot_creds[] =
{ "REAL_USER=root", NULL };
if (options.chroot_directory != NULL &&
strcasecmp(options.chroot_directory, "none") != 0)
creds = chroot_creds;
if (setpcred(pw->pw_name, creds) == -1)
fatal("Failed to set process credentials");
}
#endif /* HAVE_SETPCRED */
#ifdef WITH_SELINUX
ssh_selinux_setup_exec_context(pw->pw_name);
#endif
}
char *
platform_krb5_get_principal_name(const char *pw_name)
{
#ifdef USE_AIX_KRB_NAME
return aix_krb5_get_principal_name(pw_name);
#else
return NULL;
#endif
}
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