-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#include <sys/un.h>
#include <syslog.h>
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
#include <selinux/context.h>
#include <selinux/label.h>
#include <selinux/selinux.h>
#include "time-util.h"
#include "util.h"
-#ifdef HAVE_SELINUX
-DEFINE_TRIVIAL_CLEANUP_FUNC(security_context_t, freecon);
+#if HAVE_SELINUX
+DEFINE_TRIVIAL_CLEANUP_FUNC(char*, freecon);
DEFINE_TRIVIAL_CLEANUP_FUNC(context_t, context_free);
-#define _cleanup_security_context_free_ _cleanup_(freeconp)
+#define _cleanup_freecon_ _cleanup_(freeconp)
#define _cleanup_context_free_ _cleanup_(context_freep)
static int cached_use = -1;
static struct selabel_handle *label_hnd = NULL;
-#define log_enforcing(...) log_full(security_getenforce() == 1 ? LOG_ERR : LOG_DEBUG, __VA_ARGS__)
+#define log_enforcing(...) log_full_errno(security_getenforce() == 1 ? LOG_ERR : LOG_DEBUG, errno, __VA_ARGS__)
#endif
-bool mac_selinux_have(void) {
-#ifdef HAVE_SELINUX
+bool mac_selinux_use(void) {
+#if HAVE_SELINUX
if (cached_use < 0)
cached_use = is_selinux_enabled() > 0;
#endif
}
-bool mac_selinux_use(void) {
- if (!mac_selinux_have())
- return false;
-
- /* Never try to configure SELinux features if we aren't
- * root */
-
- return getuid() == 0;
-}
-
void mac_selinux_retest(void) {
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
cached_use = -1;
#endif
}
-int mac_selinux_init(const char *prefix) {
+int mac_selinux_init(void) {
int r = 0;
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
usec_t before_timestamp, after_timestamp;
struct mallinfo before_mallinfo, after_mallinfo;
- if (!mac_selinux_use())
+ if (label_hnd)
return 0;
- if (label_hnd)
+ if (!mac_selinux_use())
return 0;
before_mallinfo = mallinfo();
before_timestamp = now(CLOCK_MONOTONIC);
- if (prefix) {
- struct selinux_opt options[] = {
- { .type = SELABEL_OPT_SUBSET, .value = prefix },
- };
-
- label_hnd = selabel_open(SELABEL_CTX_FILE, options, ELEMENTSOF(options));
- } else
- label_hnd = selabel_open(SELABEL_CTX_FILE, NULL, 0);
-
+ label_hnd = selabel_open(SELABEL_CTX_FILE, NULL, 0);
if (!label_hnd) {
log_enforcing("Failed to initialize SELinux context: %m");
r = security_getenforce() == 1 ? -errno : 0;
void mac_selinux_finish(void) {
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
if (!label_hnd)
return;
int mac_selinux_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
struct stat st;
int r;
r = lstat(path, &st);
if (r >= 0) {
- _cleanup_security_context_free_ security_context_t fcon = NULL;
+ _cleanup_freecon_ char* fcon = NULL;
r = selabel_lookup_raw(label_hnd, &fcon, path, st.st_mode);
return 0;
if (r >= 0) {
- r = lsetfilecon(path, fcon);
+ r = lsetfilecon_raw(path, fcon);
/* If the FS doesn't support labels, then exit without warning */
if (r < 0 && errno == EOPNOTSUPP)
int mac_selinux_apply(const char *path, const char *label) {
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
if (!mac_selinux_use())
return 0;
assert(path);
assert(label);
- if (setfilecon(path, (security_context_t) label) < 0) {
+ if (setfilecon(path, label) < 0) {
log_enforcing("Failed to set SELinux security context %s on path %s: %m", label, path);
if (security_getenforce() > 0)
return -errno;
int mac_selinux_get_create_label_from_exe(const char *exe, char **label) {
int r = -EOPNOTSUPP;
-#ifdef HAVE_SELINUX
- _cleanup_security_context_free_ security_context_t mycon = NULL, fcon = NULL;
+#if HAVE_SELINUX
+ _cleanup_freecon_ char *mycon = NULL, *fcon = NULL;
security_class_t sclass;
assert(exe);
assert(label);
- if (!mac_selinux_have())
+ if (!mac_selinux_use())
return -EOPNOTSUPP;
r = getcon_raw(&mycon);
return -errno;
sclass = string_to_security_class("process");
- r = security_compute_create(mycon, fcon, sclass, (security_context_t *) label);
+ r = security_compute_create_raw(mycon, fcon, sclass, label);
if (r < 0)
return -errno;
#endif
assert(label);
-#ifdef HAVE_SELINUX
- if (!mac_selinux_have())
+#if HAVE_SELINUX
+ if (!mac_selinux_use())
return -EOPNOTSUPP;
r = getcon_raw(label);
int mac_selinux_get_child_mls_label(int socket_fd, const char *exe, const char *exec_label, char **label) {
int r = -EOPNOTSUPP;
-#ifdef HAVE_SELINUX
- _cleanup_security_context_free_ security_context_t mycon = NULL, peercon = NULL, fcon = NULL;
+#if HAVE_SELINUX
+ _cleanup_freecon_ char *mycon = NULL, *peercon = NULL, *fcon = NULL;
_cleanup_context_free_ context_t pcon = NULL, bcon = NULL;
security_class_t sclass;
const char *range = NULL;
assert(exe);
assert(label);
- if (!mac_selinux_have())
+ if (!mac_selinux_use())
return -EOPNOTSUPP;
r = getcon_raw(&mycon);
if (r < 0)
return -errno;
- r = getpeercon(socket_fd, &peercon);
+ r = getpeercon_raw(socket_fd, &peercon);
if (r < 0)
return -errno;
return -ENOMEM;
sclass = string_to_security_class("process");
- r = security_compute_create(mycon, fcon, sclass, (security_context_t *) label);
+ r = security_compute_create_raw(mycon, fcon, sclass, label);
if (r < 0)
return -errno;
#endif
char* mac_selinux_free(char *label) {
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
if (!label)
return NULL;
- if (!mac_selinux_have())
+ if (!mac_selinux_use())
return NULL;
- freecon((security_context_t) label);
+ freecon(label);
#endif
return NULL;
int mac_selinux_create_file_prepare(const char *path, mode_t mode) {
-#ifdef HAVE_SELINUX
- _cleanup_security_context_free_ security_context_t filecon = NULL;
+#if HAVE_SELINUX
+ _cleanup_freecon_ char *filecon = NULL;
int r;
assert(path);
log_enforcing("Failed to determine SELinux security context for %s: %m", path);
} else {
- if (setfscreatecon(filecon) >= 0)
+ if (setfscreatecon_raw(filecon) >= 0)
return 0; /* Success! */
log_enforcing("Failed to set SELinux security context %s for %s: %m", filecon, path);
void mac_selinux_create_file_clear(void) {
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
PROTECT_ERRNO;
if (!mac_selinux_use())
return;
- setfscreatecon(NULL);
+ setfscreatecon_raw(NULL);
#endif
}
int mac_selinux_create_socket_prepare(const char *label) {
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
if (!mac_selinux_use())
return 0;
assert(label);
- if (setsockcreatecon((security_context_t) label) < 0) {
+ if (setsockcreatecon(label) < 0) {
log_enforcing("Failed to set SELinux security context %s for sockets: %m", label);
if (security_getenforce() == 1)
void mac_selinux_create_socket_clear(void) {
-#ifdef HAVE_SELINUX
+#if HAVE_SELINUX
PROTECT_ERRNO;
if (!mac_selinux_use())
return;
- setsockcreatecon(NULL);
+ setsockcreatecon_raw(NULL);
#endif
}
/* Binds a socket and label its file system object according to the SELinux policy */
-#ifdef HAVE_SELINUX
- _cleanup_security_context_free_ security_context_t fcon = NULL;
+#if HAVE_SELINUX
+ _cleanup_freecon_ char *fcon = NULL;
const struct sockaddr_un *un;
bool context_changed = false;
char *path;
return -errno;
} else {
- if (setfscreatecon(fcon) < 0) {
+ if (setfscreatecon_raw(fcon) < 0) {
log_enforcing("Failed to set SELinux security context %s for %s: %m", fcon, path);
if (security_getenforce() > 0)
return -errno;
r = bind(fd, addr, addrlen) < 0 ? -errno : 0;
if (context_changed)
- setfscreatecon(NULL);
+ setfscreatecon_raw(NULL);
return r;