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authorKay Sievers <kay@vrfy.org>2015-06-09 14:27:33 +0200
committerKay Sievers <kay@vrfy.org>2015-06-11 10:52:46 +0200
commita095315b3c31f7a419baceac82c26c3c5ac0cd12 (patch)
treea5a70cf5b5430c0a6873311437b8345d7071f249 /src/shared/smack-util.c
parent37c47e5e5b8e47dd886ed6e8355b1203082b4a3e (diff)
build-sys: split internal basic/ library from shared/
basic/ can be used by everything cannot use anything outside of basic/ libsystemd/ can use basic/ cannot use shared/ shared/ can use libsystemd/
Diffstat (limited to 'src/shared/smack-util.c')
-rw-r--r--src/shared/smack-util.c208
1 files changed, 0 insertions, 208 deletions
diff --git a/src/shared/smack-util.c b/src/shared/smack-util.c
deleted file mode 100644
index 2e24b1ea99..0000000000
--- a/src/shared/smack-util.c
+++ /dev/null
@@ -1,208 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2013 Intel Corporation
-
- Author: Auke Kok <auke-jan.h.kok@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 <sys/xattr.h>
-
-#include "util.h"
-#include "process-util.h"
-#include "path-util.h"
-#include "fileio.h"
-#include "smack-util.h"
-
-#define SMACK_FLOOR_LABEL "_"
-#define SMACK_STAR_LABEL "*"
-
-bool mac_smack_use(void) {
-#ifdef HAVE_SMACK
- static int cached_use = -1;
-
- if (cached_use < 0)
- cached_use = access("/sys/fs/smackfs/", F_OK) >= 0;
-
- return cached_use;
-#else
- return false;
-#endif
-}
-
-int mac_smack_apply(const char *path, const char *label) {
- int r = 0;
-
- assert(path);
-
-#ifdef HAVE_SMACK
- if (!mac_smack_use())
- return 0;
-
- if (label)
- r = lsetxattr(path, "security.SMACK64", label, strlen(label), 0);
- else
- r = lremovexattr(path, "security.SMACK64");
- if (r < 0)
- return -errno;
-#endif
-
- return r;
-}
-
-int mac_smack_apply_fd(int fd, const char *label) {
- int r = 0;
-
- assert(fd >= 0);
-
-#ifdef HAVE_SMACK
- if (!mac_smack_use())
- return 0;
-
- if (label)
- r = fsetxattr(fd, "security.SMACK64", label, strlen(label), 0);
- else
- r = fremovexattr(fd, "security.SMACK64");
- if (r < 0)
- return -errno;
-#endif
-
- return r;
-}
-
-int mac_smack_apply_ip_out_fd(int fd, const char *label) {
- int r = 0;
-
- assert(fd >= 0);
-
-#ifdef HAVE_SMACK
- if (!mac_smack_use())
- return 0;
-
- if (label)
- r = fsetxattr(fd, "security.SMACK64IPOUT", label, strlen(label), 0);
- else
- r = fremovexattr(fd, "security.SMACK64IPOUT");
- if (r < 0)
- return -errno;
-#endif
-
- return r;
-}
-
-int mac_smack_apply_ip_in_fd(int fd, const char *label) {
- int r = 0;
-
- assert(fd >= 0);
-
-#ifdef HAVE_SMACK
- if (!mac_smack_use())
- return 0;
-
- if (label)
- r = fsetxattr(fd, "security.SMACK64IPIN", label, strlen(label), 0);
- else
- r = fremovexattr(fd, "security.SMACK64IPIN");
- if (r < 0)
- return -errno;
-#endif
-
- return r;
-}
-
-int mac_smack_apply_pid(pid_t pid, const char *label) {
-
-#ifdef HAVE_SMACK
- const char *p;
-#endif
- int r = 0;
-
- assert(label);
-
-#ifdef HAVE_SMACK
- if (!mac_smack_use())
- return 0;
-
- p = procfs_file_alloca(pid, "attr/current");
- r = write_string_file(p, label);
- if (r < 0)
- return r;
-#endif
-
- return r;
-}
-
-int mac_smack_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
-
-#ifdef HAVE_SMACK
- struct stat st;
-#endif
- int r = 0;
-
- assert(path);
-
-#ifdef HAVE_SMACK
- if (!mac_smack_use())
- return 0;
-
- /*
- * Path must be in /dev and must exist
- */
- if (!path_startswith(path, "/dev"))
- return 0;
-
- r = lstat(path, &st);
- if (r >= 0) {
- const char *label;
-
- /*
- * Label directories and character devices "*".
- * Label symlinks "_".
- * Don't change anything else.
- */
-
- if (S_ISDIR(st.st_mode))
- label = SMACK_STAR_LABEL;
- else if (S_ISLNK(st.st_mode))
- label = SMACK_FLOOR_LABEL;
- else if (S_ISCHR(st.st_mode))
- label = SMACK_STAR_LABEL;
- else
- return 0;
-
- r = lsetxattr(path, "security.SMACK64", label, strlen(label), 0);
-
- /* If the FS doesn't support labels, then exit without warning */
- if (r < 0 && errno == EOPNOTSUPP)
- return 0;
- }
-
- if (r < 0) {
- /* Ignore ENOENT in some cases */
- if (ignore_enoent && errno == ENOENT)
- return 0;
-
- if (ignore_erofs && errno == EROFS)
- return 0;
-
- r = log_debug_errno(errno, "Unable to fix SMACK label of %s: %m", path);
- }
-#endif
-
- return r;
-}