diff options
| -rw-r--r-- | src/shared/label.c | 60 |
1 files changed, 57 insertions, 3 deletions
diff --git a/src/shared/label.c b/src/shared/label.c index 92f10f9f90..3632e3ebf9 100644 --- a/src/shared/label.c +++ b/src/shared/label.c @@ -41,6 +41,48 @@ static struct selabel_handle *label_hnd = NULL; #endif +#ifdef HAVE_SMACK +#include <sys/xattr.h> +#include <string.h> +#define FLOOR_LABEL "_" +#define STAR_LABEL "*" + +static void smack_relabel_in_dev(const char *path) { + struct stat sb; + const char *label; + int r; + + /* + * Path must be in /dev and must exist + */ + if (!path_equal(path, "/dev") && + !path_startswith(path, "/dev")) + return; + + r = lstat(path, &sb); + if (r < 0) + return; + + /* + * Label directories and character devices "*". + * Label symlinks "_". + * Don't change anything else. + */ + if (S_ISDIR(sb.st_mode)) + label = STAR_LABEL; + else if (S_ISLNK(sb.st_mode)) + label = FLOOR_LABEL; + else if (S_ISCHR(sb.st_mode)) + label = STAR_LABEL; + else + return; + + r = setxattr(path, "security.SMACK64", label, strlen(label), 0); + if (r < 0) + log_error("Smack relabeling \"%s\" %s", path, strerror(errno)); + return; +} +#endif int label_init(const char *prefix) { int r = 0; @@ -130,6 +172,9 @@ int label_fix(const char *path, bool ignore_enoent, bool ignore_erofs) { r = security_getenforce() == 1 ? -errno : 0; } #endif +#ifdef HAVE_SMACK + smack_relabel_in_dev(path); +#endif return r; } @@ -207,6 +252,9 @@ int label_context_set(const char *path, mode_t mode) { if (r < 0 && security_getenforce() == 0) r = 0; #endif +#ifdef HAVE_SMACK + smack_relabel_in_dev(path); +#endif return r; } @@ -260,11 +308,11 @@ void label_free(const char *label) { } int label_mkdir(const char *path, mode_t mode) { + int r; - /* Creates a directory and labels it according to the SELinux policy */ #ifdef HAVE_SELINUX + /* Creates a directory and labels it according to the SELinux policy */ security_context_t fcon = NULL; - int r; if (!use_selinux() || !label_hnd) goto skipped; @@ -305,7 +353,13 @@ finish: skipped: #endif - return mkdir(path, mode) < 0 ? -errno : 0; + r = mkdir(path, mode); + if (r) + return -errno; +#ifdef HAVE_SMACK + smack_relabel_in_dev(path); +#endif + return 0; } int label_bind(int fd, const struct sockaddr *addr, socklen_t addrlen) { |