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openssh/openssh-5.9p1-role.patch
Jan F. Chadima 69dd72f6ef ignore SIGPIPE in ssh keyscan
2011-09-07 15:12:54 +02:00

614 lines
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diff -up openssh-5.9p0/auth-pam.c.role openssh-5.9p0/auth-pam.c
--- openssh-5.9p0/auth-pam.c.role 2009-07-12 14:07:21.000000000 +0200
+++ openssh-5.9p0/auth-pam.c 2011-08-31 11:42:54.870087433 +0200
@@ -1069,7 +1069,7 @@ is_pam_session_open(void)
* during the ssh authentication process.
*/
int
-do_pam_putenv(char *name, char *value)
+do_pam_putenv(char *name, const char *value)
{
int ret = 1;
#ifdef HAVE_PAM_PUTENV
diff -up openssh-5.9p0/auth-pam.h.role openssh-5.9p0/auth-pam.h
--- openssh-5.9p0/auth-pam.h.role 2004-09-11 14:17:26.000000000 +0200
+++ openssh-5.9p0/auth-pam.h 2011-08-31 11:42:54.979086333 +0200
@@ -38,7 +38,7 @@ void do_pam_session(void);
void do_pam_set_tty(const char *);
void do_pam_setcred(int );
void do_pam_chauthtok(void);
-int do_pam_putenv(char *, char *);
+int do_pam_putenv(char *, const char *);
char ** fetch_pam_environment(void);
char ** fetch_pam_child_environment(void);
void free_pam_environment(char **);
diff -up openssh-5.9p0/auth.h.role openssh-5.9p0/auth.h
--- openssh-5.9p0/auth.h.role 2011-08-31 11:42:47.760024631 +0200
+++ openssh-5.9p0/auth.h 2011-08-31 11:42:55.090151027 +0200
@@ -59,6 +59,9 @@ struct Authctxt {
char *service;
struct passwd *pw; /* set if 'valid' */
char *style;
+#ifdef WITH_SELINUX
+ char *role;
+#endif
void *kbdintctxt;
void *jpake_ctx;
#ifdef BSD_AUTH
diff -up openssh-5.9p0/auth1.c.role openssh-5.9p0/auth1.c
--- openssh-5.9p0/auth1.c.role 2010-08-31 14:36:39.000000000 +0200
+++ openssh-5.9p0/auth1.c 2011-08-31 11:42:55.215033075 +0200
@@ -384,6 +384,9 @@ do_authentication(Authctxt *authctxt)
{
u_int ulen;
char *user, *style = NULL;
+#ifdef WITH_SELINUX
+ char *role=NULL;
+#endif
/* Get the name of the user that we wish to log in as. */
packet_read_expect(SSH_CMSG_USER);
@@ -392,11 +395,24 @@ do_authentication(Authctxt *authctxt)
user = packet_get_cstring(&ulen);
packet_check_eom();
+#ifdef WITH_SELINUX
+ if ((role = strchr(user, '/')) != NULL)
+ *role++ = '\0';
+#endif
+
if ((style = strchr(user, ':')) != NULL)
*style++ = '\0';
+#ifdef WITH_SELINUX
+ else
+ if (role && (style = strchr(role, ':')) != NULL)
+ *style++ = '\0';
+#endif
authctxt->user = user;
authctxt->style = style;
+#ifdef WITH_SELINUX
+ authctxt->role = role;
+#endif
/* Verify that the user is a valid user. */
if ((authctxt->pw = PRIVSEP(getpwnamallow(user))) != NULL)
diff -up openssh-5.9p0/auth2-gss.c.role openssh-5.9p0/auth2-gss.c
--- openssh-5.9p0/auth2-gss.c.role 2011-05-05 06:04:11.000000000 +0200
+++ openssh-5.9p0/auth2-gss.c 2011-08-31 11:42:55.313025576 +0200
@@ -260,6 +260,7 @@ input_gssapi_mic(int type, u_int32_t ple
Authctxt *authctxt = ctxt;
Gssctxt *gssctxt;
int authenticated = 0;
+ char *micuser;
Buffer b;
gss_buffer_desc mic, gssbuf;
u_int len;
@@ -272,7 +273,13 @@ input_gssapi_mic(int type, u_int32_t ple
mic.value = packet_get_string(&len);
mic.length = len;
- ssh_gssapi_buildmic(&b, authctxt->user, authctxt->service,
+#ifdef WITH_SELINUX
+ if (authctxt->role && (strlen(authctxt->role) > 0))
+ xasprintf(&micuser, "%s/%s", authctxt->user, authctxt->role);
+ else
+#endif
+ micuser = authctxt->user;
+ ssh_gssapi_buildmic(&b, micuser, authctxt->service,
"gssapi-with-mic");
gssbuf.value = buffer_ptr(&b);
@@ -284,6 +291,8 @@ input_gssapi_mic(int type, u_int32_t ple
logit("GSSAPI MIC check failed");
buffer_free(&b);
+ if (micuser != authctxt->user)
+ xfree(micuser);
xfree(mic.value);
authctxt->postponed = 0;
diff -up openssh-5.9p0/auth2-hostbased.c.role openssh-5.9p0/auth2-hostbased.c
--- openssh-5.9p0/auth2-hostbased.c.role 2011-08-31 11:42:47.863023264 +0200
+++ openssh-5.9p0/auth2-hostbased.c 2011-08-31 11:42:55.421024814 +0200
@@ -106,7 +106,15 @@ userauth_hostbased(Authctxt *authctxt)
buffer_put_string(&b, session_id2, session_id2_len);
/* reconstruct packet */
buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST);
- buffer_put_cstring(&b, authctxt->user);
+#ifdef WITH_SELINUX
+ if (authctxt->role) {
+ buffer_put_int(&b, strlen(authctxt->user)+strlen(authctxt->role)+1);
+ buffer_append(&b, authctxt->user, strlen(authctxt->user));
+ buffer_put_char(&b, '/');
+ buffer_append(&b, authctxt->role, strlen(authctxt->role));
+ } else
+#endif
+ buffer_put_cstring(&b, authctxt->user);
buffer_put_cstring(&b, service);
buffer_put_cstring(&b, "hostbased");
buffer_put_string(&b, pkalg, alen);
diff -up openssh-5.9p0/auth2-pubkey.c.role openssh-5.9p0/auth2-pubkey.c
--- openssh-5.9p0/auth2-pubkey.c.role 2011-08-31 11:42:47.978087418 +0200
+++ openssh-5.9p0/auth2-pubkey.c 2011-08-31 11:42:55.551025263 +0200
@@ -121,7 +121,15 @@ userauth_pubkey(Authctxt *authctxt)
}
/* reconstruct packet */
buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST);
- buffer_put_cstring(&b, authctxt->user);
+#ifdef WITH_SELINUX
+ if (authctxt->role) {
+ buffer_put_int(&b, strlen(authctxt->user)+strlen(authctxt->role)+1);
+ buffer_append(&b, authctxt->user, strlen(authctxt->user));
+ buffer_put_char(&b, '/');
+ buffer_append(&b, authctxt->role, strlen(authctxt->role));
+ } else
+#endif
+ buffer_put_cstring(&b, authctxt->user);
buffer_put_cstring(&b,
datafellows & SSH_BUG_PKSERVICE ?
"ssh-userauth" :
diff -up openssh-5.9p0/auth2.c.role openssh-5.9p0/auth2.c
--- openssh-5.9p0/auth2.c.role 2011-08-31 11:42:45.409026065 +0200
+++ openssh-5.9p0/auth2.c 2011-08-31 11:42:55.676024869 +0200
@@ -216,6 +216,9 @@ input_userauth_request(int type, u_int32
Authctxt *authctxt = ctxt;
Authmethod *m = NULL;
char *user, *service, *method, *style = NULL;
+#ifdef WITH_SELINUX
+ char *role = NULL;
+#endif
int authenticated = 0;
if (authctxt == NULL)
@@ -227,6 +230,11 @@ input_userauth_request(int type, u_int32
debug("userauth-request for user %s service %s method %s", user, service, method);
debug("attempt %d failures %d", authctxt->attempt, authctxt->failures);
+#ifdef WITH_SELINUX
+ if ((role = strchr(user, '/')) != NULL)
+ *role++ = 0;
+#endif
+
if ((style = strchr(user, ':')) != NULL)
*style++ = 0;
@@ -249,8 +257,15 @@ input_userauth_request(int type, u_int32
use_privsep ? " [net]" : "");
authctxt->service = xstrdup(service);
authctxt->style = style ? xstrdup(style) : NULL;
- if (use_privsep)
+#ifdef WITH_SELINUX
+ authctxt->role = role ? xstrdup(role) : NULL;
+#endif
+ if (use_privsep) {
mm_inform_authserv(service, style);
+#ifdef WITH_SELINUX
+ mm_inform_authrole(role);
+#endif
+ }
userauth_banner();
} else if (strcmp(user, authctxt->user) != 0 ||
strcmp(service, authctxt->service) != 0) {
diff -up openssh-5.9p0/monitor.c.role openssh-5.9p0/monitor.c
--- openssh-5.9p0/monitor.c.role 2011-08-31 11:42:53.301024819 +0200
+++ openssh-5.9p0/monitor.c 2011-08-31 11:42:55.796025812 +0200
@@ -148,6 +148,9 @@ int mm_answer_sign(int, Buffer *);
int mm_answer_pwnamallow(int, Buffer *);
int mm_answer_auth2_read_banner(int, Buffer *);
int mm_answer_authserv(int, Buffer *);
+#ifdef WITH_SELINUX
+int mm_answer_authrole(int, Buffer *);
+#endif
int mm_answer_authpassword(int, Buffer *);
int mm_answer_bsdauthquery(int, Buffer *);
int mm_answer_bsdauthrespond(int, Buffer *);
@@ -231,6 +234,9 @@ struct mon_table mon_dispatch_proto20[]
{MONITOR_REQ_SIGN, MON_ONCE, mm_answer_sign},
{MONITOR_REQ_PWNAM, MON_ONCE, mm_answer_pwnamallow},
{MONITOR_REQ_AUTHSERV, MON_ONCE, mm_answer_authserv},
+#ifdef WITH_SELINUX
+ {MONITOR_REQ_AUTHROLE, MON_ONCE, mm_answer_authrole},
+#endif
{MONITOR_REQ_AUTH2_READ_BANNER, MON_ONCE, mm_answer_auth2_read_banner},
{MONITOR_REQ_AUTHPASSWORD, MON_AUTH, mm_answer_authpassword},
#ifdef USE_PAM
@@ -819,6 +825,9 @@ mm_answer_pwnamallow(int sock, Buffer *m
else {
/* Allow service/style information on the auth context */
monitor_permit(mon_dispatch, MONITOR_REQ_AUTHSERV, 1);
+#ifdef WITH_SELINUX
+ monitor_permit(mon_dispatch, MONITOR_REQ_AUTHROLE, 1);
+#endif
monitor_permit(mon_dispatch, MONITOR_REQ_AUTH2_READ_BANNER, 1);
}
#ifdef USE_PAM
@@ -862,6 +871,25 @@ mm_answer_authserv(int sock, Buffer *m)
return (0);
}
+#ifdef WITH_SELINUX
+int
+mm_answer_authrole(int sock, Buffer *m)
+{
+ monitor_permit_authentications(1);
+
+ authctxt->role = buffer_get_string(m, NULL);
+ debug3("%s: role=%s",
+ __func__, authctxt->role);
+
+ if (strlen(authctxt->role) == 0) {
+ xfree(authctxt->role);
+ authctxt->role = NULL;
+ }
+
+ return (0);
+}
+#endif
+
int
mm_answer_authpassword(int sock, Buffer *m)
{
@@ -1227,7 +1255,7 @@ static int
monitor_valid_userblob(u_char *data, u_int datalen)
{
Buffer b;
- char *p;
+ char *p, *r;
u_int len;
int fail = 0;
@@ -1253,6 +1281,8 @@ monitor_valid_userblob(u_char *data, u_i
if (buffer_get_char(&b) != SSH2_MSG_USERAUTH_REQUEST)
fail++;
p = buffer_get_string(&b, NULL);
+ if ((r = strchr(p, '/')) != NULL)
+ *r = '\0';
if (strcmp(authctxt->user, p) != 0) {
logit("wrong user name passed to monitor: expected %s != %.100s",
authctxt->user, p);
@@ -1284,7 +1314,7 @@ monitor_valid_hostbasedblob(u_char *data
char *chost)
{
Buffer b;
- char *p;
+ char *p, *r;
u_int len;
int fail = 0;
@@ -1301,6 +1331,8 @@ monitor_valid_hostbasedblob(u_char *data
if (buffer_get_char(&b) != SSH2_MSG_USERAUTH_REQUEST)
fail++;
p = buffer_get_string(&b, NULL);
+ if ((r = strchr(p, '/')) != NULL)
+ *r = '\0';
if (strcmp(authctxt->user, p) != 0) {
logit("wrong user name passed to monitor: expected %s != %.100s",
authctxt->user, p);
diff -up openssh-5.9p0/monitor.h.role openssh-5.9p0/monitor.h
--- openssh-5.9p0/monitor.h.role 2011-08-31 11:42:53.409025333 +0200
+++ openssh-5.9p0/monitor.h 2011-08-31 11:42:55.889024801 +0200
@@ -31,6 +31,9 @@
enum monitor_reqtype {
MONITOR_REQ_MODULI, MONITOR_ANS_MODULI,
MONITOR_REQ_FREE, MONITOR_REQ_AUTHSERV,
+#ifdef WITH_SELINUX
+ MONITOR_REQ_AUTHROLE,
+#endif
MONITOR_REQ_SIGN, MONITOR_ANS_SIGN,
MONITOR_REQ_PWNAM, MONITOR_ANS_PWNAM,
MONITOR_REQ_AUTH2_READ_BANNER, MONITOR_ANS_AUTH2_READ_BANNER,
diff -up openssh-5.9p0/monitor_wrap.c.role openssh-5.9p0/monitor_wrap.c
--- openssh-5.9p0/monitor_wrap.c.role 2011-08-31 11:42:53.548024503 +0200
+++ openssh-5.9p0/monitor_wrap.c 2011-08-31 11:42:56.029024553 +0200
@@ -336,6 +336,25 @@ mm_inform_authserv(char *service, char *
buffer_free(&m);
}
+/* Inform the privileged process about role */
+
+#ifdef WITH_SELINUX
+void
+mm_inform_authrole(char *role)
+{
+ Buffer m;
+
+ debug3("%s entering", __func__);
+
+ buffer_init(&m);
+ buffer_put_cstring(&m, role ? role : "");
+
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHROLE, &m);
+
+ buffer_free(&m);
+}
+#endif
+
/* Do the password authentication */
int
mm_auth_password(Authctxt *authctxt, char *password)
diff -up openssh-5.9p0/monitor_wrap.h.role openssh-5.9p0/monitor_wrap.h
--- openssh-5.9p0/monitor_wrap.h.role 2011-08-31 11:42:53.660025271 +0200
+++ openssh-5.9p0/monitor_wrap.h 2011-08-31 11:42:56.131025748 +0200
@@ -42,6 +42,9 @@ int mm_is_monitor(void);
DH *mm_choose_dh(int, int, int);
int mm_key_sign(Key *, u_char **, u_int *, u_char *, u_int);
void mm_inform_authserv(char *, char *);
+#ifdef WITH_SELINUX
+void mm_inform_authrole(char *);
+#endif
struct passwd *mm_getpwnamallow(const char *);
char *mm_auth2_read_banner(void);
int mm_auth_password(struct Authctxt *, char *);
diff -up openssh-5.9p0/openbsd-compat/Makefile.in.role openssh-5.9p0/openbsd-compat/Makefile.in
--- openssh-5.9p0/openbsd-compat/Makefile.in.role 2010-10-07 13:19:24.000000000 +0200
+++ openssh-5.9p0/openbsd-compat/Makefile.in 2011-08-31 11:48:02.404091479 +0200
@@ -20,7 +20,7 @@ OPENBSD=base64.o basename.o bindresvport
COMPAT=bsd-arc4random.o bsd-asprintf.o bsd-closefrom.o bsd-cray.o bsd-cygwin_util.o bsd-getpeereid.o bsd-misc.o bsd-nextstep.o bsd-openpty.o bsd-poll.o bsd-snprintf.o bsd-statvfs.o bsd-waitpid.o fake-rfc2553.o openssl-compat.o xmmap.o xcrypt.o
-PORTS=port-aix.o port-irix.o port-linux.o port-solaris.o port-tun.o port-uw.o
+PORTS=port-aix.o port-irix.o port-linux.o port-linux_part_2.o port-solaris.o port-tun.o port-uw.o
.c.o:
$(CC) $(CFLAGS) $(CPPFLAGS) -c $<
diff -up openssh-5.9p0/openbsd-compat/port-linux.c.role openssh-5.9p0/openbsd-compat/port-linux.c
--- openssh-5.9p0/openbsd-compat/port-linux.c.role 2011-08-29 08:09:57.000000000 +0200
+++ openssh-5.9p0/openbsd-compat/port-linux.c 2011-08-31 11:42:56.492087969 +0200
@@ -31,7 +31,11 @@
#include "log.h"
#include "xmalloc.h"
+#include "servconf.h"
#include "port-linux.h"
+#include "key.h"
+#include "hostfile.h"
+#include "auth.h"
#ifdef WITH_SELINUX
#include <selinux/selinux.h>
@@ -42,41 +46,63 @@
# define SSH_SELINUX_UNCONFINED_TYPE ":unconfined_t:"
#endif
-/* Wrapper around is_selinux_enabled() to log its return value once only */
-int
-ssh_selinux_enabled(void)
-{
- static int enabled = -1;
+extern ServerOptions options;
+extern Authctxt *the_authctxt;
+extern int inetd_flag;
+extern int rexeced_flag;
- if (enabled == -1) {
- enabled = (is_selinux_enabled() == 1);
- debug("SELinux support %s", enabled ? "enabled" : "disabled");
+static void
+ssh_selinux_get_role_level(char **role, const char **level)
+{
+ *role = NULL;
+ *level = NULL;
+ if (the_authctxt) {
+ if (the_authctxt->role != NULL) {
+ char *slash;
+ *role = xstrdup(the_authctxt->role);
+ if ((slash = strchr(*role, '/')) != NULL) {
+ *slash = '\0';
+ *level = slash + 1;
+ }
+ }
}
-
- return (enabled);
}
/* Return the default security context for the given username */
static security_context_t
ssh_selinux_getctxbyname(char *pwname)
{
- security_context_t sc;
- char *sename = NULL, *lvl = NULL;
- int r;
+ security_context_t sc = NULL;
+ char *sename, *lvl;
+ char *role;
+ const char *reqlvl;
+ int r = 0;
+
+ ssh_selinux_get_role_level(&role, &reqlvl);
#ifdef HAVE_GETSEUSERBYNAME
- if (getseuserbyname(pwname, &sename, &lvl) != 0)
- return NULL;
+ if ((r=getseuserbyname(pwname, &sename, &lvl)) != 0) {
+ sename = NULL;
+ lvl = NULL;
+ }
#else
sename = pwname;
lvl = NULL;
#endif
+ if (r == 0) {
#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
- r = get_default_context_with_level(sename, lvl, NULL, &sc);
+ if (role != NULL && role[0])
+ r = get_default_context_with_rolelevel(sename, role, lvl, NULL, &sc);
+ else
+ r = get_default_context_with_level(sename, lvl, NULL, &sc);
#else
- r = get_default_context(sename, NULL, &sc);
+ if (role != NULL && role[0])
+ r = get_default_context_with_role(sename, role, NULL, &sc);
+ else
+ r = get_default_context(sename, NULL, &sc);
#endif
+ }
if (r != 0) {
switch (security_getenforce()) {
@@ -104,6 +130,36 @@ ssh_selinux_getctxbyname(char *pwname)
return (sc);
}
+/* Setup environment variables for pam_selinux */
+static int
+ssh_selinux_setup_pam_variables(void)
+{
+ const char *reqlvl;
+ char *role;
+ char *use_current;
+ int rv;
+
+ debug3("%s: setting execution context", __func__);
+
+ ssh_selinux_get_role_level(&role, &reqlvl);
+
+ rv = do_pam_putenv("SELINUX_ROLE_REQUESTED", role ? role : "");
+
+ if (inetd_flag && !rexeced_flag) {
+ use_current = "1";
+ } else {
+ use_current = "";
+ rv = rv || do_pam_putenv("SELINUX_LEVEL_REQUESTED", reqlvl ? reqlvl: "");
+ }
+
+ rv = rv || do_pam_putenv("SELINUX_USE_CURRENT_RANGE", use_current);
+
+ if (role != NULL)
+ xfree(role);
+
+ return rv;
+}
+
/* Set the execution context to the default for the specified user */
void
ssh_selinux_setup_exec_context(char *pwname)
@@ -113,6 +169,24 @@ ssh_selinux_setup_exec_context(char *pwn
if (!ssh_selinux_enabled())
return;
+ if (options.use_pam) {
+ /* do not compute context, just setup environment for pam_selinux */
+ if (ssh_selinux_setup_pam_variables()) {
+ switch (security_getenforce()) {
+ case -1:
+ fatal("%s: security_getenforce() failed", __func__);
+ case 0:
+ error("%s: SELinux PAM variable setup failure. Continuing in permissive mode.",
+ __func__);
+ break;
+ default:
+ fatal("%s: SELinux PAM variable setup failure. Aborting connection.",
+ __func__);
+ }
+ }
+ return;
+ }
+
debug3("%s: setting execution context", __func__);
user_ctx = ssh_selinux_getctxbyname(pwname);
@@ -220,21 +294,6 @@ ssh_selinux_change_context(const char *n
xfree(newctx);
}
-void
-ssh_selinux_setfscreatecon(const char *path)
-{
- security_context_t context;
-
- if (!ssh_selinux_enabled())
- return;
- if (path == NULL) {
- setfscreatecon(NULL);
- return;
- }
- if (matchpathcon(path, 0700, &context) == 0)
- setfscreatecon(context);
-}
-
#endif /* WITH_SELINUX */
#ifdef LINUX_OOM_ADJUST
diff -up openssh-5.9p0/openbsd-compat/port-linux_part_2.c.role openssh-5.9p0/openbsd-compat/port-linux_part_2.c
--- openssh-5.9p0/openbsd-compat/port-linux_part_2.c.role 2011-08-31 11:42:56.583047619 +0200
+++ openssh-5.9p0/openbsd-compat/port-linux_part_2.c 2011-08-31 11:42:56.586178005 +0200
@@ -0,0 +1,75 @@
+/* $Id: port-linux.c,v 1.11.4.2 2011/02/04 00:43:08 djm Exp $ */
+
+/*
+ * Copyright (c) 2005 Daniel Walsh <dwalsh@redhat.com>
+ * Copyright (c) 2006 Damien Miller <djm@openbsd.org>
+ *
+ * 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.
+ */
+
+/*
+ * Linux-specific portability code - just SELinux support at present
+ */
+
+#include "includes.h"
+
+#if defined(WITH_SELINUX) || defined(LINUX_OOM_ADJUST)
+#include <errno.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "log.h"
+#include "xmalloc.h"
+#include "port-linux.h"
+#include "key.h"
+#include "hostfile.h"
+#include "auth.h"
+
+#ifdef WITH_SELINUX
+#include <selinux/selinux.h>
+#include <selinux/flask.h>
+#include <selinux/get_context_list.h>
+
+/* Wrapper around is_selinux_enabled() to log its return value once only */
+int
+ssh_selinux_enabled(void)
+{
+ static int enabled = -1;
+
+ if (enabled == -1) {
+ enabled = (is_selinux_enabled() == 1);
+ debug("SELinux support %s", enabled ? "enabled" : "disabled");
+ }
+
+ return (enabled);
+}
+
+void
+ssh_selinux_setfscreatecon(const char *path)
+{
+ security_context_t context;
+
+ if (!ssh_selinux_enabled())
+ return;
+ if (path == NULL) {
+ setfscreatecon(NULL);
+ return;
+ }
+ if (matchpathcon(path, 0700, &context) == 0)
+ setfscreatecon(context);
+}
+
+#endif /* WITH_SELINUX */
+
+#endif /* WITH_SELINUX || LINUX_OOM_ADJUST */
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