along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <assert.h>
#include <errno.h>
#include <stdbool.h>
int acl_find_uid(acl_t acl, uid_t uid, acl_entry_t *entry) {
acl_entry_t i;
- int found;
+ int r;
assert(acl);
assert(entry);
- for (found = acl_get_entry(acl, ACL_FIRST_ENTRY, &i);
- found > 0;
- found = acl_get_entry(acl, ACL_NEXT_ENTRY, &i)) {
+ for (r = acl_get_entry(acl, ACL_FIRST_ENTRY, &i);
+ r > 0;
+ r = acl_get_entry(acl, ACL_NEXT_ENTRY, &i)) {
acl_tag_t tag;
uid_t *u;
return 1;
}
}
-
- if (found < 0)
+ if (r < 0)
return -errno;
return 0;
int calc_acl_mask_if_needed(acl_t *acl_p) {
acl_entry_t i;
- int found;
+ int r;
assert(acl_p);
- for (found = acl_get_entry(*acl_p, ACL_FIRST_ENTRY, &i);
- found > 0;
- found = acl_get_entry(*acl_p, ACL_NEXT_ENTRY, &i)) {
-
+ for (r = acl_get_entry(*acl_p, ACL_FIRST_ENTRY, &i);
+ r > 0;
+ r = acl_get_entry(*acl_p, ACL_NEXT_ENTRY, &i)) {
acl_tag_t tag;
if (acl_get_tag_type(i, &tag) < 0)
if (tag == ACL_MASK)
return 0;
+ if (IN_SET(tag, ACL_USER, ACL_GROUP))
+ goto calc;
}
-
- if (found < 0)
+ if (r < 0)
return -errno;
+ return 0;
+calc:
if (acl_calc_mask(acl_p) < 0)
return -errno;
+ return 1;
+}
+
+int add_base_acls_if_needed(acl_t *acl_p, const char *path) {
+ acl_entry_t i;
+ int r;
+ bool have_user_obj = false, have_group_obj = false, have_other = false;
+ struct stat st;
+ _cleanup_(acl_freep) acl_t basic = NULL;
+
+ assert(acl_p);
+
+ for (r = acl_get_entry(*acl_p, ACL_FIRST_ENTRY, &i);
+ r > 0;
+ r = acl_get_entry(*acl_p, ACL_NEXT_ENTRY, &i)) {
+ acl_tag_t tag;
+
+ if (acl_get_tag_type(i, &tag) < 0)
+ return -errno;
+
+ if (tag == ACL_USER_OBJ)
+ have_user_obj = true;
+ else if (tag == ACL_GROUP_OBJ)
+ have_group_obj = true;
+ else if (tag == ACL_OTHER)
+ have_other = true;
+ if (have_user_obj && have_group_obj && have_other)
+ return 0;
+ }
+ if (r < 0)
+ return -errno;
+
+ r = stat(path, &st);
+ if (r < 0)
+ return -errno;
+ basic = acl_from_mode(st.st_mode);
+ if (!basic)
+ return -errno;
+
+ for (r = acl_get_entry(basic, ACL_FIRST_ENTRY, &i);
+ r > 0;
+ r = acl_get_entry(basic, ACL_NEXT_ENTRY, &i)) {
+ acl_tag_t tag;
+ acl_entry_t dst;
+
+ if (acl_get_tag_type(i, &tag) < 0)
+ return -errno;
+
+ if ((tag == ACL_USER_OBJ && have_user_obj) ||
+ (tag == ACL_GROUP_OBJ && have_group_obj) ||
+ (tag == ACL_OTHER && have_other))
+ continue;
+
+ r = acl_create_entry(acl_p, &dst);
+ if (r < 0)
+ return -errno;
+
+ r = acl_copy_entry(dst, i);
+ if (r < 0)
+ return -errno;
+ }
+ if (r < 0)
+ return -errno;
return 0;
}
return 0;
}
-int parse_acl(char *text, acl_t *acl_access, acl_t *acl_default) {
+int parse_acl(char *text, acl_t *acl_access, acl_t *acl_default, bool want_mask) {
_cleanup_free_ char **a = NULL, **d = NULL; /* strings are not be freed */
_cleanup_strv_free_ char **split;
char **entry;
if (!a_acl)
return -EINVAL;
- r = calc_acl_mask_if_needed(&a_acl);
- if (r < 0)
- return r;
+ if (want_mask) {
+ r = calc_acl_mask_if_needed(&a_acl);
+ if (r < 0)
+ return r;
+ }
}
if (!strv_isempty(d)) {
if (!d_acl)
return -EINVAL;
- r = calc_acl_mask_if_needed(&d_acl);
- if (r < 0)
- return r;
+ if (want_mask) {
+ r = calc_acl_mask_if_needed(&d_acl);
+ if (r < 0)
+ return r;
+ }
}
*acl_access = a_acl;
a_acl = d_acl = NULL;
return 0;
}
+
+int acls_for_file(const char *path, acl_type_t type, acl_t new, acl_t *acl) {
+ _cleanup_(acl_freep) acl_t old;
+ acl_entry_t i;
+ int r;
+
+ old = acl_get_file(path, type);
+ if (!old)
+ return -errno;
+
+ for (r = acl_get_entry(new, ACL_FIRST_ENTRY, &i);
+ r > 0;
+ r = acl_get_entry(new, ACL_NEXT_ENTRY, &i)) {
+
+ acl_entry_t j;
+
+ if (acl_create_entry(&old, &j) < 0)
+ return -errno;
+
+ if (acl_copy_entry(j, i) < 0)
+ return -errno;
+ }
+ if (r < 0)
+ return -errno;
+
+ *acl = old;
+ old = NULL;
+ return 0;
+}