diff options
Diffstat (limited to 'src/shared/smack-util.c')
| -rw-r--r-- | src/shared/smack-util.c | 208 |
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; -} |