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authorLennart Poettering <lennart@poettering.net>2015-04-22 22:54:23 +0200
committerLennart Poettering <lennart@poettering.net>2015-04-22 22:56:24 +0200
commite346512c684e9efae84c6442f7e6a5781564ecde (patch)
tree7aa37e80d4f1e27e89017b8898b355c62f5cd918 /src/shared/acl-util.c
parent0a0215783159b9c3a3652b231df36dbff08e0ac5 (diff)
journalctl: rework code that checks whether we have access to /var/log/journal
- fix some memory leaks on error conditions - handle all error cases properly, and log about failures - move HAVE_ACL and no-HAVE_ACL code closer to each other
Diffstat (limited to 'src/shared/acl-util.c')
-rw-r--r--src/shared/acl-util.c102
1 files changed, 56 insertions, 46 deletions
diff --git a/src/shared/acl-util.c b/src/shared/acl-util.c
index 36b3f0c16a..466f9aa601 100644
--- a/src/shared/acl-util.c
+++ b/src/shared/acl-util.c
@@ -81,17 +81,18 @@ int calc_acl_mask_if_needed(acl_t *acl_p) {
if (tag == ACL_MASK)
return 0;
- if (IN_SET(tag, ACL_USER, ACL_GROUP))
- goto calc;
+
+ if (IN_SET(tag, ACL_USER, ACL_GROUP)) {
+ if (acl_calc_mask(acl_p) < 0)
+ return -errno;
+
+ return 1;
+ }
}
if (r < 0)
return -errno;
- return 0;
-calc:
- if (acl_calc_mask(acl_p) < 0)
- return -errno;
- return 1;
+ return 0;
}
int add_base_acls_if_needed(acl_t *acl_p, const char *path) {
@@ -158,59 +159,68 @@ int add_base_acls_if_needed(acl_t *acl_p, const char *path) {
return 0;
}
-int search_acl_groups(char*** dst, const char* path, bool* belong) {
- acl_t acl;
+int acl_search_groups(const char *path, char ***ret_groups) {
+ _cleanup_strv_free_ char **g = NULL;
+ _cleanup_(acl_free) acl_t acl = NULL;
+ bool ret = false;
+ acl_entry_t entry;
+ int r;
assert(path);
- assert(belong);
acl = acl_get_file(path, ACL_TYPE_DEFAULT);
- if (acl) {
- acl_entry_t entry;
- int r;
-
- r = acl_get_entry(acl, ACL_FIRST_ENTRY, &entry);
- while (r > 0) {
- acl_tag_t tag;
- gid_t *gid;
- char *name;
+ if (!acl)
+ return -errno;
- r = acl_get_tag_type(entry, &tag);
- if (r < 0)
- break;
+ r = acl_get_entry(acl, ACL_FIRST_ENTRY, &entry);
+ for (;;) {
+ _cleanup_(acl_free_gid_tpp) gid_t *gid = NULL;
+ acl_tag_t tag;
+
+ if (r < 0)
+ return -errno;
+ if (r == 0)
+ break;
+
+ if (acl_get_tag_type(entry, &tag) < 0)
+ return -errno;
- if (tag != ACL_GROUP)
- goto next;
+ if (tag != ACL_GROUP)
+ goto next;
- gid = acl_get_qualifier(entry);
- if (!gid)
- break;
+ gid = acl_get_qualifier(entry);
+ if (!gid)
+ return -errno;
+
+ if (in_gid(*gid) > 0) {
+ if (!ret_groups)
+ return true;
- if (in_gid(*gid) > 0) {
- *belong = true;
- break;
- }
+ ret = true;
+ }
+
+ if (ret_groups) {
+ char *name;
name = gid_to_name(*gid);
- if (!name) {
- acl_free(acl);
- return log_oom();
- }
-
- r = strv_consume(dst, name);
- if (r < 0) {
- acl_free(acl);
- return log_oom();
- }
-
- next:
- r = acl_get_entry(acl, ACL_NEXT_ENTRY, &entry);
+ if (!name)
+ return -ENOMEM;
+
+ r = strv_consume(&g, name);
+ if (r < 0)
+ return r;
}
- acl_free(acl);
+ next:
+ r = acl_get_entry(acl, ACL_NEXT_ENTRY, &entry);
}
- return 0;
+ if (ret_groups) {
+ *ret_groups = g;
+ g = NULL;
+ }
+
+ return ret;
}
int parse_acl(char *text, acl_t *acl_access, acl_t *acl_default, bool want_mask) {