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-rw-r--r--src/core/smack-setup.c346
1 files changed, 0 insertions, 346 deletions
diff --git a/src/core/smack-setup.c b/src/core/smack-setup.c
deleted file mode 100644
index 5a6d11cfa1..0000000000
--- a/src/core/smack-setup.c
+++ /dev/null
@@ -1,346 +0,0 @@
-/***
- This file is part of systemd.
-
- Copyright (C) 2013 Intel Corporation
- Authors:
- Nathaniel Chen <nathaniel.chen@intel.com>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published
- by the Free Software Foundation; either version 2.1 of the License,
- or (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "alloc-util.h"
-#include "dirent-util.h"
-#include "fd-util.h"
-#include "fileio.h"
-#include "log.h"
-#include "macro.h"
-#include "smack-setup.h"
-#include "string-util.h"
-#include "util.h"
-
-#ifdef HAVE_SMACK
-
-static int write_access2_rules(const char* srcdir) {
- _cleanup_close_ int load2_fd = -1, change_fd = -1;
- _cleanup_closedir_ DIR *dir = NULL;
- struct dirent *entry;
- char buf[NAME_MAX];
- int dfd = -1;
- int r = 0;
-
- load2_fd = open("/sys/fs/smackfs/load2", O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
- if (load2_fd < 0) {
- if (errno != ENOENT)
- log_warning_errno(errno, "Failed to open '/sys/fs/smackfs/load2': %m");
- return -errno; /* negative error */
- }
-
- change_fd = open("/sys/fs/smackfs/change-rule", O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
- if (change_fd < 0) {
- if (errno != ENOENT)
- log_warning_errno(errno, "Failed to open '/sys/fs/smackfs/change-rule': %m");
- return -errno; /* negative error */
- }
-
- /* write rules to load2 or change-rule from every file in the directory */
- dir = opendir(srcdir);
- if (!dir) {
- if (errno != ENOENT)
- log_warning_errno(errno, "Failed to opendir '%s': %m", srcdir);
- return errno; /* positive on purpose */
- }
-
- dfd = dirfd(dir);
- assert(dfd >= 0);
-
- FOREACH_DIRENT(entry, dir, return 0) {
- int fd;
- _cleanup_fclose_ FILE *policy = NULL;
-
- if (!dirent_is_file(entry))
- continue;
-
- fd = openat(dfd, entry->d_name, O_RDONLY|O_CLOEXEC);
- if (fd < 0) {
- if (r == 0)
- r = -errno;
- log_warning_errno(errno, "Failed to open '%s': %m", entry->d_name);
- continue;
- }
-
- policy = fdopen(fd, "re");
- if (!policy) {
- if (r == 0)
- r = -errno;
- safe_close(fd);
- log_error_errno(errno, "Failed to open '%s': %m", entry->d_name);
- continue;
- }
-
- /* load2 write rules in the kernel require a line buffered stream */
- FOREACH_LINE(buf, policy,
- log_error_errno(errno, "Failed to read line from '%s': %m",
- entry->d_name)) {
-
- _cleanup_free_ char *sbj = NULL, *obj = NULL, *acc1 = NULL, *acc2 = NULL;
-
- if (isempty(truncate_nl(buf)))
- continue;
-
- /* if 3 args -> load rule : subject object access1 */
- /* if 4 args -> change rule : subject object access1 access2 */
- if (sscanf(buf, "%ms %ms %ms %ms", &sbj, &obj, &acc1, &acc2) < 3) {
- log_error_errno(errno, "Failed to parse rule '%s' in '%s', ignoring.", buf, entry->d_name);
- continue;
- }
-
- if (write(isempty(acc2) ? load2_fd : change_fd, buf, strlen(buf)) < 0) {
- if (r == 0)
- r = -errno;
- log_error_errno(errno, "Failed to write '%s' to '%s' in '%s'",
- buf, isempty(acc2) ? "/sys/fs/smackfs/load2" : "/sys/fs/smackfs/change-rule", entry->d_name);
- }
- }
- }
-
- return r;
-}
-
-static int write_cipso2_rules(const char* srcdir) {
- _cleanup_close_ int cipso2_fd = -1;
- _cleanup_closedir_ DIR *dir = NULL;
- struct dirent *entry;
- char buf[NAME_MAX];
- int dfd = -1;
- int r = 0;
-
- cipso2_fd = open("/sys/fs/smackfs/cipso2", O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
- if (cipso2_fd < 0) {
- if (errno != ENOENT)
- log_warning_errno(errno, "Failed to open '/sys/fs/smackfs/cipso2': %m");
- return -errno; /* negative error */
- }
-
- /* write rules to cipso2 from every file in the directory */
- dir = opendir(srcdir);
- if (!dir) {
- if (errno != ENOENT)
- log_warning_errno(errno, "Failed to opendir '%s': %m", srcdir);
- return errno; /* positive on purpose */
- }
-
- dfd = dirfd(dir);
- assert(dfd >= 0);
-
- FOREACH_DIRENT(entry, dir, return 0) {
- int fd;
- _cleanup_fclose_ FILE *policy = NULL;
-
- if (!dirent_is_file(entry))
- continue;
-
- fd = openat(dfd, entry->d_name, O_RDONLY|O_CLOEXEC);
- if (fd < 0) {
- if (r == 0)
- r = -errno;
- log_error_errno(errno, "Failed to open '%s': %m", entry->d_name);
- continue;
- }
-
- policy = fdopen(fd, "re");
- if (!policy) {
- if (r == 0)
- r = -errno;
- safe_close(fd);
- log_error_errno(errno, "Failed to open '%s': %m", entry->d_name);
- continue;
- }
-
- /* cipso2 write rules in the kernel require a line buffered stream */
- FOREACH_LINE(buf, policy,
- log_error_errno(errno, "Failed to read line from '%s': %m",
- entry->d_name)) {
-
- if (isempty(truncate_nl(buf)))
- continue;
-
- if (write(cipso2_fd, buf, strlen(buf)) < 0) {
- if (r == 0)
- r = -errno;
- log_error_errno(errno, "Failed to write '%s' to '/sys/fs/smackfs/cipso2' in '%s'",
- buf, entry->d_name);
- break;
- }
- }
- }
-
- return r;
-}
-
-static int write_netlabel_rules(const char* srcdir) {
- _cleanup_fclose_ FILE *dst = NULL;
- _cleanup_closedir_ DIR *dir = NULL;
- struct dirent *entry;
- char buf[NAME_MAX];
- int dfd = -1;
- int r = 0;
-
- dst = fopen("/sys/fs/smackfs/netlabel", "we");
- if (!dst) {
- if (errno != ENOENT)
- log_warning_errno(errno, "Failed to open /sys/fs/smackfs/netlabel: %m");
- return -errno; /* negative error */
- }
-
- /* write rules to dst from every file in the directory */
- dir = opendir(srcdir);
- if (!dir) {
- if (errno != ENOENT)
- log_warning_errno(errno, "Failed to opendir %s: %m", srcdir);
- return errno; /* positive on purpose */
- }
-
- dfd = dirfd(dir);
- assert(dfd >= 0);
-
- FOREACH_DIRENT(entry, dir, return 0) {
- int fd;
- _cleanup_fclose_ FILE *policy = NULL;
-
- fd = openat(dfd, entry->d_name, O_RDONLY|O_CLOEXEC);
- if (fd < 0) {
- if (r == 0)
- r = -errno;
- log_warning_errno(errno, "Failed to open %s: %m", entry->d_name);
- continue;
- }
-
- policy = fdopen(fd, "re");
- if (!policy) {
- if (r == 0)
- r = -errno;
- safe_close(fd);
- log_error_errno(errno, "Failed to open %s: %m", entry->d_name);
- continue;
- }
-
- /* load2 write rules in the kernel require a line buffered stream */
- FOREACH_LINE(buf, policy,
- log_error_errno(errno, "Failed to read line from %s: %m",
- entry->d_name)) {
- if (!fputs(buf, dst)) {
- if (r == 0)
- r = -EINVAL;
- log_error_errno(errno, "Failed to write line to /sys/fs/smackfs/netlabel");
- break;
- }
- if (fflush(dst)) {
- if (r == 0)
- r = -errno;
- log_error_errno(errno, "Failed to flush writes to /sys/fs/smackfs/netlabel: %m");
- break;
- }
- }
- }
-
- return r;
-}
-
-#endif
-
-int mac_smack_setup(bool *loaded_policy) {
-
-#ifdef HAVE_SMACK
-
- int r;
-
- assert(loaded_policy);
-
- r = write_access2_rules("/etc/smack/accesses.d/");
- switch(r) {
- case -ENOENT:
- log_debug("Smack is not enabled in the kernel.");
- return 0;
- case ENOENT:
- log_debug("Smack access rules directory '/etc/smack/accesses.d/' not found");
- return 0;
- case 0:
- log_info("Successfully loaded Smack policies.");
- break;
- default:
- log_warning_errno(r, "Failed to load Smack access rules, ignoring: %m");
- return 0;
- }
-
-#ifdef SMACK_RUN_LABEL
- r = write_string_file("/proc/self/attr/current", SMACK_RUN_LABEL, 0);
- if (r < 0)
- log_warning_errno(r, "Failed to set SMACK label \"" SMACK_RUN_LABEL "\" on self: %m");
- r = write_string_file("/sys/fs/smackfs/ambient", SMACK_RUN_LABEL, 0);
- if (r < 0)
- log_warning_errno(r, "Failed to set SMACK ambient label \"" SMACK_RUN_LABEL "\": %m");
- r = write_string_file("/sys/fs/smackfs/netlabel",
- "0.0.0.0/0 " SMACK_RUN_LABEL, 0);
- if (r < 0)
- log_warning_errno(r, "Failed to set SMACK netlabel rule \"0.0.0.0/0 " SMACK_RUN_LABEL "\": %m");
- r = write_string_file("/sys/fs/smackfs/netlabel", "127.0.0.1 -CIPSO", 0);
- if (r < 0)
- log_warning_errno(r, "Failed to set SMACK netlabel rule \"127.0.0.1 -CIPSO\": %m");
-#endif
-
- r = write_cipso2_rules("/etc/smack/cipso.d/");
- switch(r) {
- case -ENOENT:
- log_debug("Smack/CIPSO is not enabled in the kernel.");
- return 0;
- case ENOENT:
- log_debug("Smack/CIPSO access rules directory '/etc/smack/cipso.d/' not found");
- break;
- case 0:
- log_info("Successfully loaded Smack/CIPSO policies.");
- break;
- default:
- log_warning_errno(r, "Failed to load Smack/CIPSO access rules, ignoring: %m");
- break;
- }
-
- r = write_netlabel_rules("/etc/smack/netlabel.d/");
- switch(r) {
- case -ENOENT:
- log_debug("Smack/CIPSO is not enabled in the kernel.");
- return 0;
- case ENOENT:
- log_debug("Smack network host rules directory '/etc/smack/netlabel.d/' not found");
- break;
- case 0:
- log_info("Successfully loaded Smack network host rules.");
- break;
- default:
- log_warning_errno(r, "Failed to load Smack network host rules: %m, ignoring.");
- break;
- }
-
- *loaded_policy = true;
-
-#endif
-
- return 0;
-}
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