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-rw-r--r--src/core/namespace.c4
-rw-r--r--src/core/socket.c6
-rw-r--r--src/shared/dev-setup.c4
-rw-r--r--src/shared/fileio-label.c12
-rw-r--r--src/shared/selinux-util.c126
-rw-r--r--src/shared/selinux-util.h20
-rw-r--r--src/shared/socket-label.c4
-rw-r--r--src/tmpfiles/tmpfiles.c28
-rw-r--r--src/udev/udev-node.c11
-rw-r--r--src/update-done/update-done.c4
10 files changed, 117 insertions, 102 deletions
diff --git a/src/core/namespace.c b/src/core/namespace.c
index 6dd7a4f25..4bc288de1 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -225,9 +225,9 @@ static int mount_dev(BindMount *m) {
goto fail;
}
- mac_selinux_context_set(d, st.st_mode);
+ mac_selinux_create_file_prepare(d, st.st_mode);
r = mknod(dn, st.st_mode, st.st_rdev);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
if (r < 0) {
r = -errno;
diff --git a/src/core/socket.c b/src/core/socket.c
index e9cf7b3e9..dc16af5e3 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -967,7 +967,7 @@ static int fifo_address_create(
mkdir_parents_label(path, directory_mode);
- r = mac_selinux_context_set(path, S_IFIFO);
+ r = mac_selinux_create_file_prepare(path, S_IFIFO);
if (r < 0)
goto fail;
@@ -990,7 +990,7 @@ static int fifo_address_create(
goto fail;
}
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
if (fstat(fd, &st) < 0) {
r = -errno;
@@ -1010,7 +1010,7 @@ static int fifo_address_create(
return 0;
fail:
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
safe_close(fd);
return r;
diff --git a/src/shared/dev-setup.c b/src/shared/dev-setup.c
index 96934a9fa..ae1c3d9d4 100644
--- a/src/shared/dev-setup.c
+++ b/src/shared/dev-setup.c
@@ -38,14 +38,14 @@ 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/fileio-label.c b/src/shared/fileio-label.c
index b117c32cf..294c9e6ba 100644
--- a/src/shared/fileio-label.c
+++ b/src/shared/fileio-label.c
@@ -30,13 +30,13 @@
int write_string_file_atomic_label(const char *fn, const char *line) {
int r;
- r = mac_selinux_context_set(fn, S_IFREG);
+ r = mac_selinux_create_file_prepare(fn, S_IFREG);
if (r < 0)
return r;
r = write_string_file_atomic(fn, line);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
return r;
}
@@ -44,13 +44,13 @@ int write_string_file_atomic_label(const char *fn, const char *line) {
int write_env_file_label(const char *fname, char **l) {
int r;
- r = mac_selinux_context_set(fname, S_IFREG);
+ r = mac_selinux_create_file_prepare(fname, S_IFREG);
if (r < 0)
return r;
r = write_env_file(fname, l);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
return r;
}
@@ -59,13 +59,13 @@ int fopen_temporary_label(const char *target,
const char *path, FILE **f, char **temp_path) {
int r;
- r = mac_selinux_context_set(target, S_IFREG);
+ r = mac_selinux_create_file_prepare(target, S_IFREG);
if (r < 0)
return r;
r = fopen_temporary(path, f, temp_path);
- 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 76d3916ea..0d8c6c2f1 100644
--- a/src/shared/selinux-util.c
+++ b/src/shared/selinux-util.c
@@ -109,11 +109,21 @@ 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);
@@ -148,22 +158,31 @@ 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) {
@@ -279,12 +298,24 @@ 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;
@@ -294,7 +325,7 @@ 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;
}
}
@@ -306,24 +337,7 @@ 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;
@@ -335,37 +349,49 @@ 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);
@@ -383,7 +409,7 @@ 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;
@@ -397,9 +423,11 @@ 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) {
@@ -416,7 +444,7 @@ 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 */
@@ -450,7 +478,7 @@ 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;
@@ -470,15 +498,3 @@ 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 80546986d..bce9fd5d4 100644
--- a/src/shared/selinux-util.h
+++ b/src/shared/selinux-util.h
@@ -32,20 +32,18 @@ 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/shared/socket-label.c b/src/shared/socket-label.c
index 6f9aeeea5..47d9488d5 100644
--- a/src/shared/socket-label.c
+++ b/src/shared/socket-label.c
@@ -64,7 +64,7 @@ int socket_address_listen(
return -EAFNOSUPPORT;
if (label) {
- r = mac_selinux_socket_set(label);
+ r = mac_selinux_create_socket_prepare(label);
if (r < 0)
return r;
}
@@ -73,7 +73,7 @@ int socket_address_listen(
r = fd < 0 ? -errno : 0;
if (label)
- mac_selinux_socket_clear();
+ mac_selinux_create_socket_clear();
if (r < 0)
return r;
diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index 28c395bb0..1e4675f87 100644
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -509,9 +509,9 @@ static int write_one_file(Item *i, const char *path) {
i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0;
RUN_WITH_UMASK(0000) {
- mac_selinux_context_set(path, S_IFREG);
+ mac_selinux_create_file_prepare(path, S_IFREG);
fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
}
if (fd < 0) {
@@ -743,9 +743,9 @@ static int create_item(Item *i) {
case CREATE_FIFO:
RUN_WITH_UMASK(0000) {
- mac_selinux_context_set(i->path, S_IFIFO);
+ mac_selinux_create_file_prepare(i->path, S_IFIFO);
r = mkfifo(i->path, i->mode);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
}
if (r < 0) {
@@ -764,9 +764,9 @@ static int create_item(Item *i) {
if (i->force) {
RUN_WITH_UMASK(0000) {
- mac_selinux_context_set(i->path, S_IFIFO);
+ mac_selinux_create_file_prepare(i->path, S_IFIFO);
r = mkfifo_atomic(i->path, i->mode);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
}
if (r < 0) {
@@ -788,9 +788,9 @@ static int create_item(Item *i) {
case CREATE_SYMLINK:
- mac_selinux_context_set(i->path, S_IFLNK);
+ mac_selinux_create_file_prepare(i->path, S_IFLNK);
r = symlink(i->argument, i->path);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
if (r < 0) {
_cleanup_free_ char *x = NULL;
@@ -804,9 +804,9 @@ static int create_item(Item *i) {
if (r < 0 || !streq(i->argument, x)) {
if (i->force) {
- mac_selinux_context_set(i->path, S_IFLNK);
+ mac_selinux_create_file_prepare(i->path, S_IFLNK);
r = symlink_atomic(i->argument, i->path);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
if (r < 0) {
log_error("symlink(%s, %s) failed: %s", i->argument, i->path, strerror(-r));
@@ -838,9 +838,9 @@ static int create_item(Item *i) {
file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
RUN_WITH_UMASK(0000) {
- mac_selinux_context_set(i->path, file_type);
+ mac_selinux_create_file_prepare(i->path, file_type);
r = mknod(i->path, i->mode | file_type, i->major_minor);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
}
if (r < 0) {
@@ -865,9 +865,9 @@ static int create_item(Item *i) {
if (i->force) {
RUN_WITH_UMASK(0000) {
- mac_selinux_context_set(i->path, file_type);
+ mac_selinux_create_file_prepare(i->path, file_type);
r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
}
if (r < 0) {
diff --git a/src/udev/udev-node.c b/src/udev/udev-node.c
index 8d5bada5a..4ac6f7149 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);
diff --git a/src/update-done/update-done.c b/src/update-done/update-done.c
index d48e4f76d..1437c30d1 100644
--- a/src/update-done/update-done.c
+++ b/src/update-done/update-done.c
@@ -61,7 +61,7 @@ static int apply_timestamp(const char *path, struct timespec *ts) {
/* The timestamp file doesn't exist yet? Then let's create it. */
- r = mac_selinux_context_set(path, S_IFREG);
+ r = mac_selinux_create_file_prepare(path, S_IFREG);
if (r < 0) {
log_error("Failed to set SELinux context for %s: %s",
path, strerror(-r));
@@ -69,7 +69,7 @@ static int apply_timestamp(const char *path, struct timespec *ts) {
}
fd = open(path, O_CREAT|O_EXCL|O_WRONLY|O_TRUNC|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW, 0644);
- mac_selinux_context_clear();
+ mac_selinux_create_file_clear();
if (fd < 0) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-17 16:44:49 +0000