-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
#include <sys/xattr.h>
+#include <unistd.h>
-#include "util.h"
-#include "process-util.h"
-#include "path-util.h"
+#include "alloc-util.h"
#include "fileio.h"
+#include "log.h"
+#include "macro.h"
+#include "path-util.h"
+#include "process-util.h"
#include "smack-util.h"
+#include "string-table.h"
+#include "xattr-util.h"
-#define SMACK_FLOOR_LABEL "_"
-#define SMACK_STAR_LABEL "*"
-
-bool mac_smack_use(void) {
#ifdef HAVE_SMACK
+bool mac_smack_use(void) {
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;
+#if 0 /// UNNEEDED by elogind
+static const char* const smack_attr_table[_SMACK_ATTR_MAX] = {
+ [SMACK_ATTR_ACCESS] = "security.SMACK64",
+ [SMACK_ATTR_EXEC] = "security.SMACK64EXEC",
+ [SMACK_ATTR_MMAP] = "security.SMACK64MMAP",
+ [SMACK_ATTR_TRANSMUTE] = "security.SMACK64TRANSMUTE",
+ [SMACK_ATTR_IPIN] = "security.SMACK64IPIN",
+ [SMACK_ATTR_IPOUT] = "security.SMACK64IPOUT",
+};
+DEFINE_STRING_TABLE_LOOKUP(smack_attr, SmackAttr);
+
+int mac_smack_read(const char *path, SmackAttr attr, char **label) {
assert(path);
+ assert(attr >= 0 && attr < _SMACK_ATTR_MAX);
+ assert(label);
-#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;
+ return getxattr_malloc(path, smack_attr_to_string(attr), label, true);
}
-/// UNNEEDED by elogind
-#if 0
-int mac_smack_apply_fd(int fd, const char *label) {
- int r = 0;
-
+int mac_smack_read_fd(int fd, SmackAttr attr, char **label) {
assert(fd >= 0);
+ assert(attr >= 0 && attr < _SMACK_ATTR_MAX);
+ assert(label);
-#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;
+ return fgetxattr_malloc(fd, smack_attr_to_string(attr), label);
}
-int mac_smack_apply_ip_out_fd(int fd, const char *label) {
- int r = 0;
+int mac_smack_apply(const char *path, SmackAttr attr, const char *label) {
+ int r;
- assert(fd >= 0);
+ assert(path);
+ assert(attr >= 0 && attr < _SMACK_ATTR_MAX);
-#ifdef HAVE_SMACK
if (!mac_smack_use())
return 0;
if (label)
- r = fsetxattr(fd, "security.SMACK64IPOUT", label, strlen(label), 0);
+ r = lsetxattr(path, smack_attr_to_string(attr), label, strlen(label), 0);
else
- r = fremovexattr(fd, "security.SMACK64IPOUT");
+ r = lremovexattr(path, smack_attr_to_string(attr));
if (r < 0)
return -errno;
-#endif
- return r;
+ return 0;
}
-int mac_smack_apply_ip_in_fd(int fd, const char *label) {
- int r = 0;
+int mac_smack_apply_fd(int fd, SmackAttr attr, const char *label) {
+ int r;
assert(fd >= 0);
+ assert(attr >= 0 && attr < _SMACK_ATTR_MAX);
-#ifdef HAVE_SMACK
if (!mac_smack_use())
return 0;
if (label)
- r = fsetxattr(fd, "security.SMACK64IPIN", label, strlen(label), 0);
+ r = fsetxattr(fd, smack_attr_to_string(attr), label, strlen(label), 0);
else
- r = fremovexattr(fd, "security.SMACK64IPIN");
+ r = fremovexattr(fd, smack_attr_to_string(attr));
if (r < 0)
return -errno;
-#endif
- return r;
+ return 0;
}
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;
r = write_string_file(p, label, 0);
if (r < 0)
return r;
-#endif
return r;
}
#endif // 0
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;
r = log_debug_errno(errno, "Unable to fix SMACK label of %s: %m", path);
}
-#endif
return r;
}
+
+#if 0 /// UNNEEDED by elogind
+int mac_smack_copy(const char *dest, const char *src) {
+ int r = 0;
+ _cleanup_free_ char *label = NULL;
+
+ assert(dest);
+ assert(src);
+
+ r = mac_smack_read(src, SMACK_ATTR_ACCESS, &label);
+ if (r < 0)
+ return r;
+
+ r = mac_smack_apply(dest, SMACK_ATTR_ACCESS, label);
+ if (r < 0)
+ return r;
+
+ return r;
+}
+#endif // 0
+
+#else
+bool mac_smack_use(void) {
+ return false;
+}
+
+#if 0 /// UNNEEDED by elogind
+int mac_smack_read(const char *path, SmackAttr attr, char **label) {
+ return -EOPNOTSUPP;
+}
+
+int mac_smack_read_fd(int fd, SmackAttr attr, char **label) {
+ return -EOPNOTSUPP;
+}
+
+int mac_smack_apply(const char *path, SmackAttr attr, const char *label) {
+ return 0;
+}
+
+int mac_smack_apply_fd(int fd, SmackAttr attr, const char *label) {
+ return 0;
+}
+
+int mac_smack_apply_pid(pid_t pid, const char *label) {
+ return 0;
+}
+#endif // 0
+
+int mac_smack_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
+ return 0;
+}
+
+#if 0 /// UNNEEDED by elogind
+int mac_smack_copy(const char *dest, const char *src) {
+ return 0;
+}
+#endif // 0
+#endif
~ianmdlvl / elogind.git / blobdiff