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Petr Šabata 81d24c
diff --git a/openbsd-compat/port-linux-sshd.c b/openbsd-compat/port-linux-sshd.c
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index 8f32464..18a2ca4 100644
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--- a/openbsd-compat/port-linux-sshd.c
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+++ b/openbsd-compat/port-linux-sshd.c
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@@ -32,6 +32,7 @@
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 #include "misc.h"      /* servconf.h needs misc.h for struct ForwardOptions */
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 #include "servconf.h"
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 #include "port-linux.h"
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+#include "misc.h"
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 #include "sshkey.h"
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 #include "hostfile.h"
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 #include "auth.h"
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@@ -445,7 +446,7 @@ sshd_selinux_setup_exec_context(char *pwname)
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 void
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 sshd_selinux_copy_context(void)
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 {
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-	security_context_t *ctx;
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+	char *ctx;
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 	if (!sshd_selinux_enabled())
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 		return;
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@@ -461,6 +462,72 @@ sshd_selinux_copy_context(void)
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 	}
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 }
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+void
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+sshd_selinux_change_privsep_preauth_context(void)
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+{
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+	int len;
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+	char line[1024], *preauth_context = NULL, *cp, *arg;
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+	const char *contexts_path;
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+	FILE *contexts_file;
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+	struct stat sb;
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+
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+	contexts_path = selinux_openssh_contexts_path();
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+	if (contexts_path == NULL) {
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+		debug3_f("Failed to get the path to SELinux context");
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+		return;
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+	}
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+
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+	if ((contexts_file = fopen(contexts_path, "r")) == NULL) {
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+		debug_f("Failed to open SELinux context file");
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+		return;
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+	}
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+
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+	if (fstat(fileno(contexts_file), &sb) != 0 ||
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+	    sb.st_uid != 0 || (sb.st_mode & 022) != 0) {
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+		logit_f("SELinux context file needs to be owned by root"
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+		    " and not writable by anyone else");
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+		fclose(contexts_file);
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+		return;
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+	}
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+
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+	while (fgets(line, sizeof(line), contexts_file)) {
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+		/* Strip trailing whitespace */
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+		for (len = strlen(line) - 1; len > 0; len--) {
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+			if (strchr(" \t\r\n", line[len]) == NULL)
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+				break;
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+			line[len] = '\0';
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+		}
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+
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+		if (line[0] == '\0')
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+			continue;
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+
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+		cp = line;
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+		arg = strdelim(&cp;;
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+		if (arg && *arg == '\0')
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+			arg = strdelim(&cp;;
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+
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+		if (arg && strcmp(arg, "privsep_preauth") == 0) {
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+			arg = strdelim(&cp;;
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+			if (!arg || *arg == '\0') {
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+				debug_f("privsep_preauth is empty");
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+				fclose(contexts_file);
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+				return;
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+			}
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+			preauth_context = xstrdup(arg);
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+		}
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+	}
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+	fclose(contexts_file);
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+
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+	if (preauth_context == NULL) {
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+		debug_f("Unable to find 'privsep_preauth' option in"
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+		    " SELinux context file");
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+		return;
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+	}
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+
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+	ssh_selinux_change_context(preauth_context);
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+	free(preauth_context);
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+}
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+
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 #endif
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 #endif
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diff --git a/openbsd-compat/port-linux.c b/openbsd-compat/port-linux.c
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index 22ea8ef..1fc963d 100644
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--- a/openbsd-compat/port-linux.c
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+++ b/openbsd-compat/port-linux.c
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@@ -179,7 +179,7 @@ ssh_selinux_change_context(const char *newname)
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 	strlcpy(newctx + len, newname, newlen - len);
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 	if ((cx = index(cx + 1, ':')))
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 		strlcat(newctx, cx, newlen);
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-	debug3("%s: setting context from '%s' to '%s'", __func__,
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+	debug_f("setting context from '%s' to '%s'",
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 	    oldctx, newctx);
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 	if (setcon(newctx) < 0)
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 		do_log2(log_level, "%s: setcon %s from %s failed with %s",
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		    __func__, newctx, oldctx, strerror(errno));
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diff --git a/openbsd-compat/port-linux.h b/openbsd-compat/port-linux.h
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index cb51f99..8b7cda2 100644
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--- a/openbsd-compat/port-linux.h
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+++ b/openbsd-compat/port-linux.h
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@@ -29,6 +29,7 @@ int sshd_selinux_enabled(void);
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 void sshd_selinux_copy_context(void);
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 void sshd_selinux_setup_exec_context(char *);
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 int sshd_selinux_setup_env_variables(void);
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+void sshd_selinux_change_privsep_preauth_context(void);
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 #endif
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 #ifdef LINUX_OOM_ADJUST
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diff --git a/sshd.c b/sshd.c
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index 2871fe9..39b9c08 100644
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--- a/sshd.c
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+++ b/sshd.c
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@@ -629,7 +629,7 @@ privsep_preauth_child(void)
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 	demote_sensitive_data();
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 #ifdef WITH_SELINUX
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-	ssh_selinux_change_context("sshd_net_t");
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+	sshd_selinux_change_privsep_preauth_context();
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 #endif
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 	/* Demote the child */