-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#include <errno.h>
#include <malloc.h>
+#include <stddef.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/time.h>
#include <sys/un.h>
+#include <syslog.h>
#ifdef HAVE_SELINUX
-#include <selinux/selinux.h>
-#include <selinux/label.h>
#include <selinux/context.h>
+#include <selinux/label.h>
+#include <selinux/selinux.h>
#endif
-#include "strv.h"
+#include "alloc-util.h"
+#include "log.h"
+#include "macro.h"
#include "path-util.h"
#include "selinux-util.h"
+#include "time-util.h"
+#include "util.h"
#ifdef HAVE_SELINUX
DEFINE_TRIVIAL_CLEANUP_FUNC(security_context_t, freecon);
#define log_enforcing(...) log_full(security_getenforce() == 1 ? LOG_ERR : LOG_DEBUG, __VA_ARGS__)
#endif
-bool mac_selinux_use(void) {
+bool mac_selinux_have(void) {
#ifdef 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;
+}
+
+#if 0 /// UNNEEDED by elogind
void mac_selinux_retest(void) {
#ifdef HAVE_SELINUX
cached_use = -1;
#endif
}
+#endif // 0
int mac_selinux_init(const char *prefix) {
int r = 0;
return r;
}
+#if 0 /// UNNEEDED by elogind
void mac_selinux_finish(void) {
#ifdef HAVE_SELINUX
label_hnd = NULL;
#endif
}
+#endif // 0
int mac_selinux_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
return 0;
}
-/// UNNEDED by elogind
-#if 0
+#if 0 /// UNNEDED by elogind
int mac_selinux_apply(const char *path, const char *label) {
#ifdef HAVE_SELINUX
- assert(path);
- assert(label);
-
if (!mac_selinux_use())
return 0;
+ assert(path);
+ assert(label);
+
if (setfilecon(path, (security_context_t) label) < 0) {
log_enforcing("Failed to set SELinux security context %s on path %s: %m", label, path);
- if (security_getenforce() == 1)
+ if (security_getenforce() > 0)
return -errno;
}
#endif
return 0;
}
-#endif // 0
int mac_selinux_get_create_label_from_exe(const char *exe, char **label) {
int r = -EOPNOTSUPP;
assert(exe);
assert(label);
- if (!mac_selinux_use())
+ if (!mac_selinux_have())
return -EOPNOTSUPP;
- r = getcon(&mycon);
+ r = getcon_raw(&mycon);
if (r < 0)
return -errno;
- r = getfilecon(exe, &fcon);
+ r = getfilecon_raw(exe, &fcon);
if (r < 0)
return -errno;
assert(label);
#ifdef HAVE_SELINUX
- if (!mac_selinux_use())
+ if (!mac_selinux_have())
return -EOPNOTSUPP;
- r = getcon(label);
+ r = getcon_raw(label);
if (r < 0)
return -errno;
#endif
assert(exe);
assert(label);
- if (!mac_selinux_use())
+ if (!mac_selinux_have())
return -EOPNOTSUPP;
- r = getcon(&mycon);
+ r = getcon_raw(&mycon);
if (r < 0)
return -errno;
if (!exec_label) {
/* If there is no context set for next exec let's use context
of target executable */
- r = getfilecon(exe, &fcon);
+ r = getfilecon_raw(exe, &fcon);
if (r < 0)
return -errno;
}
return r;
}
-void mac_selinux_free(char *label) {
+char* mac_selinux_free(char *label) {
#ifdef HAVE_SELINUX
- if (!mac_selinux_use())
- return;
+ if (!label)
+ return NULL;
+
+ if (!mac_selinux_have())
+ return NULL;
+
freecon((security_context_t) label);
#endif
+
+ return NULL;
}
+#endif // 0
int mac_selinux_create_file_prepare(const char *path, mode_t mode) {
- int r = 0;
#ifdef HAVE_SELINUX
_cleanup_security_context_free_ security_context_t filecon = NULL;
+ int r;
assert(path);
if (path_is_absolute(path))
r = selabel_lookup_raw(label_hnd, &filecon, path, mode);
else {
- _cleanup_free_ char *newpath;
+ _cleanup_free_ char *newpath = NULL;
- newpath = path_make_absolute_cwd(path);
- if (!newpath)
- return -ENOMEM;
+ r = path_make_absolute_cwd(path, &newpath);
+ if (r < 0)
+ return r;
r = selabel_lookup_raw(label_hnd, &filecon, newpath, mode);
}
+ if (r < 0) {
/* No context specified by the policy? Proceed without setting it. */
- if (r < 0 && errno == ENOENT)
+ if (errno == ENOENT)
return 0;
- if (r < 0)
- r = -errno;
- else {
- r = setfscreatecon(filecon);
- if (r < 0) {
+ log_enforcing("Failed to determine SELinux security context for %s: %m", path);
+ } else {
+ if (setfscreatecon(filecon) >= 0)
+ return 0; /* Success! */
+
log_enforcing("Failed to set SELinux security context %s for %s: %m", filecon, path);
- r = -errno;
- }
}
- if (r < 0 && security_getenforce() == 0)
- r = 0;
-#endif
+ if (security_getenforce() > 0)
+ return -errno;
- return r;
+#endif
+ return 0;
}
void mac_selinux_create_file_clear(void) {
#endif
}
+#if 0 /// UNNEEDED by elogind
int mac_selinux_create_socket_prepare(const char *label) {
#ifdef HAVE_SELINUX
#ifdef HAVE_SELINUX
_cleanup_security_context_free_ security_context_t fcon = NULL;
const struct sockaddr_un *un;
+ bool context_changed = false;
char *path;
int r;
goto skipped;
/* Filter out anonymous sockets */
- if (addrlen < sizeof(sa_family_t) + 1)
+ if (addrlen < offsetof(struct sockaddr_un, sun_path) + 1)
goto skipped;
/* Filter out abstract namespace sockets */
if (path_is_absolute(path))
r = selabel_lookup_raw(label_hnd, &fcon, path, S_IFSOCK);
else {
- _cleanup_free_ char *newpath;
+ _cleanup_free_ char *newpath = NULL;
- newpath = path_make_absolute_cwd(path);
- if (!newpath)
- return -ENOMEM;
+ r = path_make_absolute_cwd(path, &newpath);
+ if (r < 0)
+ return r;
r = selabel_lookup_raw(label_hnd, &fcon, newpath, S_IFSOCK);
}
- if (r == 0)
- r = setfscreatecon(fcon);
+ if (r < 0) {
+ /* No context specified by the policy? Proceed without setting it */
+ if (errno == ENOENT)
+ goto skipped;
- if (r < 0 && errno != ENOENT) {
- log_enforcing("Failed to set SELinux security context %s for %s: %m", fcon, path);
+ log_enforcing("Failed to determine SELinux security context for %s: %m", path);
+ if (security_getenforce() > 0)
+ return -errno;
- if (security_getenforce() == 1) {
- r = -errno;
- goto finish;
- }
+ } else {
+ if (setfscreatecon(fcon) < 0) {
+ log_enforcing("Failed to set SELinux security context %s for %s: %m", fcon, path);
+ if (security_getenforce() > 0)
+ return -errno;
+ } else
+ context_changed = true;
}
- r = bind(fd, addr, addrlen);
- if (r < 0)
- r = -errno;
+ r = bind(fd, addr, addrlen) < 0 ? -errno : 0;
-finish:
+ if (context_changed)
setfscreatecon(NULL);
+
return r;
skipped:
#endif
- return bind(fd, addr, addrlen) < 0 ? -errno : 0;
+ if (bind(fd, addr, addrlen) < 0)
+ return -errno;
+
+ return 0;
}
+#endif // 0
~ianmdlvl / elogind.git / blobdiff