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-rw-r--r--src/shared/dev-setup.c4
-rw-r--r--src/shared/selinux-util.c126
-rw-r--r--src/shared/selinux-util.h20
-rw-r--r--src/udev/udev-node.c11
4 files changed, 88 insertions, 73 deletions
diff --git a/src/shared/dev-setup.c b/src/shared/dev-setup.c
index 10f74f0ccb..fb16a8a8cc 100644
--- a/src/shared/dev-setup.c
+++ b/src/shared/dev-setup.c
@@ -36,14 +36,14 @@ static int symlink_and_label(const char *old_path, const char *new_path) {
assert(old_path);
assert(new_path);
- r = mac_selinux_context_set(new_path, S_IFLNK);
+ r = mac_selinux_create_file_prepare(new_path, S_IFLNK);
if (r < 0)
return r;
if (symlink(old_path, new_path) < 0)
r = -errno;
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
return r;
}
diff --git a/src/shared/selinux-util.c b/src/shared/selinux-util.c
index b4ac441c21..c4223240f9 100644
--- a/src/shared/selinux-util.c
+++ b/src/shared/selinux-util.c
@@ -107,11 +107,21 @@ int mac_selinux_init(const char *prefix) {
return r;
}
+void mac_selinux_finish(void) {
+
+#ifdef HAVE_SELINUX
+ if (!label_hnd)
+ return;
+
+ selabel_close(label_hnd);
+#endif
+}
+
int mac_selinux_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
- int r = 0;
#ifdef HAVE_SELINUX
struct stat st;
+ int r;
assert(path);
@@ -146,22 +156,31 @@ int mac_selinux_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
if (ignore_erofs && errno == EROFS)
return 0;
- log_enforcing("Unable to fix SELinux label of %s: %m", path);
- r = security_getenforce() == 1 ? -errno : 0;
+ log_enforcing("Unable to fix SELinux security context of %s: %m", path);
+ if (security_getenforce() == 1)
+ return -errno;
}
#endif
- return r;
+ return 0;
}
-void mac_selinux_finish(void) {
+int mac_selinux_apply(const char *path, const char *label) {
#ifdef HAVE_SELINUX
- if (!label_hnd)
- return;
+ assert(path);
+ assert(label);
- selabel_close(label_hnd);
+ if (!mac_selinux_use())
+ return 0;
+
+ 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)
+ return -errno;
+ }
#endif
+ return 0;
}
int mac_selinux_get_create_label_from_exe(const char *exe, char **label) {
@@ -277,12 +296,24 @@ int mac_selinux_get_child_mls_label(int socket_fd, const char *exe, char **label
return r;
}
-int mac_selinux_context_set(const char *path, mode_t mode) {
+void mac_selinux_free(char *label) {
+
+#ifdef HAVE_SELINUX
+ if (!mac_selinux_use())
+ return;
+
+ freecon((security_context_t) label);
+#endif
+}
+
+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;
+ assert(path);
+
if (!label_hnd)
return 0;
@@ -292,7 +323,7 @@ int mac_selinux_context_set(const char *path, mode_t mode) {
else if (r == 0) {
r = setfscreatecon(filecon);
if (r < 0) {
- log_enforcing("Failed to set SELinux file context on %s: %m", path);
+ log_enforcing("Failed to set SELinux security context %s for %s: %m", filecon, path);
r = -errno;
}
}
@@ -304,24 +335,7 @@ int mac_selinux_context_set(const char *path, mode_t mode) {
return r;
}
-int mac_selinux_socket_set(const char *label) {
-
-#ifdef HAVE_SELINUX
- if (!mac_selinux_use())
- return 0;
-
- if (setsockcreatecon((security_context_t) label) < 0) {
- log_enforcing("Failed to set SELinux context (%s) on socket: %m", label);
-
- if (security_getenforce() == 1)
- return -errno;
- }
-#endif
-
- return 0;
-}
-
-void mac_selinux_context_clear(void) {
+void mac_selinux_create_file_clear(void) {
#ifdef HAVE_SELINUX
PROTECT_ERRNO;
@@ -333,37 +347,49 @@ void mac_selinux_context_clear(void) {
#endif
}
-void mac_selinux_socket_clear(void) {
+int mac_selinux_create_socket_prepare(const char *label) {
#ifdef HAVE_SELINUX
- PROTECT_ERRNO;
-
if (!mac_selinux_use())
- return;
+ return 0;
- setsockcreatecon(NULL);
+ assert(label);
+
+ if (setsockcreatecon((security_context_t) label) < 0) {
+ log_enforcing("Failed to set SELinux security context %s for sockets: %m", label);
+
+ if (security_getenforce() == 1)
+ return -errno;
+ }
#endif
+
+ return 0;
}
-void mac_selinux_free(const char *label) {
+void mac_selinux_create_socket_clear(void) {
#ifdef HAVE_SELINUX
+ PROTECT_ERRNO;
+
if (!mac_selinux_use())
return;
- freecon((security_context_t) label);
+ setsockcreatecon(NULL);
#endif
}
int mac_selinux_mkdir(const char *path, mode_t mode) {
- int r = 0;
-#ifdef HAVE_SELINUX
/* Creates a directory and labels it according to the SELinux policy */
+
+#ifdef HAVE_SELINUX
_cleanup_security_context_free_ security_context_t fcon = NULL;
+ int r;
+
+ assert(path);
if (!label_hnd)
- return 0;
+ goto skipped;
if (path_is_absolute(path))
r = selabel_lookup_raw(label_hnd, &fcon, path, S_IFDIR);
@@ -381,7 +407,7 @@ int mac_selinux_mkdir(const char *path, mode_t mode) {
r = setfscreatecon(fcon);
if (r < 0 && errno != ENOENT) {
- log_enforcing("Failed to set security context %s for %s: %m", fcon, path);
+ log_enforcing("Failed to set SELinux security context %s for %s: %m", fcon, path);
if (security_getenforce() == 1) {
r = -errno;
@@ -395,9 +421,11 @@ int mac_selinux_mkdir(const char *path, mode_t mode) {
finish:
setfscreatecon(NULL);
-#endif
-
return r;
+
+skipped:
+#endif
+ return mkdir(path, mode) < 0 ? -errno : 0;
}
int mac_selinux_bind(int fd, const struct sockaddr *addr, socklen_t addrlen) {
@@ -414,7 +442,7 @@ int mac_selinux_bind(int fd, const struct sockaddr *addr, socklen_t addrlen) {
assert(addr);
assert(addrlen >= sizeof(sa_family_t));
- if (!mac_selinux_use() || !label_hnd)
+ if (!label_hnd)
goto skipped;
/* Filter out non-local sockets */
@@ -448,7 +476,7 @@ int mac_selinux_bind(int fd, const struct sockaddr *addr, socklen_t addrlen) {
r = setfscreatecon(fcon);
if (r < 0 && errno != ENOENT) {
- log_enforcing("Failed to set security context %s for %s: %m", fcon, path);
+ log_enforcing("Failed to set SELinux security context %s for %s: %m", fcon, path);
if (security_getenforce() == 1) {
r = -errno;
@@ -468,15 +496,3 @@ skipped:
#endif
return bind(fd, addr, addrlen) < 0 ? -errno : 0;
}
-
-int mac_selinux_apply(const char *path, const char *label) {
- int r = 0;
-
-#ifdef HAVE_SELINUX
- if (!mac_selinux_use())
- return 0;
-
- r = setfilecon(path, (char *)label);
-#endif
- return r;
-}
diff --git a/src/shared/selinux-util.h b/src/shared/selinux-util.h
index 22f529a41c..cc1986d780 100644
--- a/src/shared/selinux-util.h
+++ b/src/shared/selinux-util.h
@@ -30,20 +30,18 @@ int mac_selinux_init(const char *prefix);
void mac_selinux_finish(void);
int mac_selinux_fix(const char *path, bool ignore_enoent, bool ignore_erofs);
-
-int mac_selinux_socket_set(const char *label);
-void mac_selinux_socket_clear(void);
-
-int mac_selinux_context_set(const char *path, mode_t mode);
-void mac_selinux_context_clear(void);
-
-int mac_selinux_mkdir(const char *path, mode_t mode);
+int mac_selinux_apply(const char *path, const char *label);
int mac_selinux_get_create_label_from_exe(const char *exe, char **label);
int mac_selinux_get_our_label(char **label);
int mac_selinux_get_child_mls_label(int socket_fd, const char *exec, char **label);
-void mac_selinux_free(const char *label);
+void mac_selinux_free(char *label);
-int mac_selinux_bind(int fd, const struct sockaddr *addr, socklen_t addrlen);
+int mac_selinux_create_file_prepare(const char *path, mode_t mode);
+void mac_selinux_create_file_clear(void);
-int mac_selinux_apply(const char *path, const char *label);
+int mac_selinux_create_socket_prepare(const char *label);
+void mac_selinux_create_socket_clear(void);
+
+int mac_selinux_mkdir(const char *path, mode_t mode);
+int mac_selinux_bind(int fd, const struct sockaddr *addr, socklen_t addrlen);
diff --git a/src/udev/udev-node.c b/src/udev/udev-node.c
index 8d5bada5a4..4ac6f71490 100644
--- a/src/udev/udev-node.c
+++ b/src/udev/udev-node.c
@@ -88,11 +88,11 @@ static int node_symlink(struct udev_device *dev, const char *node, const char *s
err = mkdir_parents_label(slink, 0755);
if (err != 0 && err != -ENOENT)
break;
- mac_selinux_context_set(slink, S_IFLNK);
+ mac_selinux_create_file_prepare(slink, S_IFLNK);
err = symlink(target, slink);
if (err != 0)
err = -errno;
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
} while (err == -ENOENT);
if (err == 0)
goto exit;
@@ -105,11 +105,11 @@ static int node_symlink(struct udev_device *dev, const char *node, const char *s
err = mkdir_parents_label(slink_tmp, 0755);
if (err != 0 && err != -ENOENT)
break;
- mac_selinux_context_set(slink_tmp, S_IFLNK);
+ mac_selinux_create_file_prepare(slink_tmp, S_IFLNK);
err = symlink(target, slink_tmp);
if (err != 0)
err = -errno;
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
} while (err == -ENOENT);
if (err != 0) {
log_error("symlink '%s' '%s' failed: %m", target, slink_tmp);
@@ -302,7 +302,8 @@ static int node_permissions_apply(struct udev_device *dev, bool apply,
if (streq(name, "selinux")) {
selinux = true;
- if (mac_selinux_apply(devnode, label) < 0)
+ r = mac_selinux_apply(devnode, label);
+ if (r < 0)
log_error("SECLABEL: failed to set SELinux label '%s': %s", label, strerror(-r));
else
log_debug("SECLABEL: set SELinux label '%s'", label);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-28 10:27:52 +0000