1 files changed, 59 insertions, 4 deletions

diff --git a/libshouldbeinlibc/idvec.h b/libshouldbeinlibc/idvec.h
index 4bd3ea5b..4bb86aa8 100644
--- a/libshouldbeinlibc/idvec.h
+++ b/libshouldbeinlibc/idvec.h
@@ -23,6 +23,7 @@
 
 #include <sys/types.h>
 #include <errno.h>
+#include <hurd/hurd_types.h>
 
 struct idvec 
 {
@@ -30,8 +31,37 @@ struct idvec
   unsigned num, alloced;
 };
 
-/* Return a new idvec, or NULL if there wasn't enough memory.  */
-struct idvec *make_idvec ();
+/* Return a new, empty, idvec, or NULL if there wasn't enough memory.  */
+struct idvec * make_idvec ();
+
+/* Free's IDVEC, but not the storage pointed to by the IDS field.  */
+void idvec_free_wrapper (struct idvec *idvec);
+
+/* Frees IDVEC and any storage associated with it.  */
+void idvec_free (struct idvec *idvec);
+
+/* Mark IDVEC as not containing any ids.  */
+extern inline void
+idvec_clear (struct idvec *idvec)
+{
+  idvec->num = 0;
+}
+
+/* Ensure that IDVEC has enough spaced allocated to hold NUM ids, thus
+   ensuring that any subsequent ids added won't return a memory allocation
+   error unless it would result in more ids that NUM.  ENOMEM is returned if
+   a memory allocation error occurs.  */
+error_t idvec_ensure (struct idvec *idvec, unsigned num);
+
+/* Like idvec_ensure(), but takes INC, the increment of the number of ids
+   already in IDVEC as an argument.  */
+error_t idvec_grow (struct idvec *idvec, unsigned inc);
+
+/* Returns true if IDVEC contains ID, at or after position POS.  */
+int idvec_tail_contains (struct idvec *idvec, unsigned pos, uid_t id);
+
+/* Returns true if IDVEC contains ID.  */
+int idvec_contains (struct idvec *idvec, uid_t id);
 
 /* Insert ID into IDVEC at position POS, returning ENOMEM if there wasn't
    enough memory, or 0.  */
@@ -41,7 +71,32 @@ error_t idvec_insert (struct idvec *idvec, unsigned pos, uid_t id);
    or 0.  */
 error_t idvec_add (struct idvec *idvec, uid_t id);
 
-/* Returns true if IDVEC contains ID.  */
-int idvec_contains (struct idvec *idvec, uid_t id);
+/* If IDVEC doesn't contain ID, add it onto the end, returning ENOMEM if
+   there's not enough memory; otherwise, do nothing.  */
+error_t idvec_add_new (struct idvec *idvec, uid_t id);
+
+/* If IDVEC doesn't contain ID at position POS or after, insert it at POS,
+   returning ENOMEM if there's not enough memory; otherwise, do nothing.  */
+error_t idvec_insert_new (struct idvec *idvec, unsigned pos, uid_t id);
+
+/* Adds each id in the vector IDS (NUM elements long) to IDVEC, as if with
+   idvec_add_new().  */
+error_t idvec_merge_ids (struct idvec *idvec, uid_t *ids, unsigned num);
+
+/* EFF and AVAIL should be idvec's corresponding to a processes effective and
+   available ids.  ID replaces the first id in EFF, and what it replaces is
+   preserved by adding it to AVAIL (if not already present).  If SECURE is
+   non-NULL, and ID was not previously present in either EFF or AVAIL, then
+   *SECURE is set to true.  ENOMEM is returned if a malloc fails, otherwise
+   0.  The return parameters are only touched if this call succeeds.  */
+error_t idvec_setid (struct idvec *eff, struct idvec *avail, uid_t id,
+		     int *secure);
+
+/* Add to all of EFF_UIDS, AVAIL_UIDS, EFF_GIDS, AVAIL_GIDS (as if with
+   idvec_merge) the ids associated with the auth port AUTH.  Any of these
+   parameters may be NULL if that information isn't desired.  */
+error_t idvec_merge_auth (struct idvec *eff_uids, struct idvec *avail_uids,
+			  struct idvec *eff_gids, struct idvec *avail_gids,
+			  auth_t auth);
 
 #endif /* __IDVEC_H__ */