diff options
| -rw-r--r-- | libshouldbeinlibc/idvec.h | 63 |
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__ */ |