diff options
Diffstat (limited to 'libdiskfs/protid-make.c')
| -rw-r--r-- | libdiskfs/protid-make.c | 50 |
1 files changed, 31 insertions, 19 deletions
diff --git a/libdiskfs/protid-make.c b/libdiskfs/protid-make.c index a4d9801d..7843be80 100644 --- a/libdiskfs/protid-make.c +++ b/libdiskfs/protid-make.c @@ -1,5 +1,5 @@ /* - Copyright (C) 1994, 1995 Free Software Foundation + Copyright (C) 1994, 1995, 1996 Free Software Foundation This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as @@ -18,20 +18,22 @@ #include "priv.h" #include <string.h> -/* Build and return a protid which has no user identification for +/* Build and return in CRED a protid which has no user identification, for peropen PO. The node PO->np must be locked. */ -struct protid * -diskfs_start_protid (struct peropen *po) +error_t +diskfs_start_protid (struct peropen *po, struct protid **cred) { - struct protid *cred; - - cred = ports_allocate_port (diskfs_port_bucket, sizeof (struct protid), - diskfs_protid_class); - po->refcnt++; - cred->po = po; - cred->shared_object = MACH_PORT_NULL; - cred->mapped = 0; - return cred; + error_t err = + ports_create_port (diskfs_protid_class, diskfs_port_bucket, + sizeof (struct protid), cred); + if (! err) + { + po->refcnt++; + (*cred)->po = po; + (*cred)->shared_object = MACH_PORT_NULL; + (*cred)->mapped = 0; + } + return err; } /* Finish building protid CRED started with diskfs_start_protid; @@ -61,16 +63,26 @@ diskfs_finish_protid (struct protid *cred, uid_t *uids, int nuids, *cred->gids = 0; } -/* Create and return a protid for an existing peropen. The uid set is - UID (length NUIDS); the gid set is GID (length NGIDS). The node +/* Create and return a protid for an existing peropen PO in CRED. The uid + set is UID (length NUIDS); the gid set is GID (length NGIDS). The node PO->np must be locked. */ +error_t +diskfs_create_protid (struct peropen *po, uid_t *uids, int nuids, + uid_t *gids, int ngids, struct protid **cred) +{ + error_t err = diskfs_start_protid (po, cred); + if (! err) + diskfs_finish_protid (*cred, uids, nuids, gids, ngids); + return err; +} + +/* Backward compatibility. Use diskfs_create_protid. */ struct protid * diskfs_make_protid (struct peropen *po, uid_t *uids, int nuids, uid_t *gids, int ngids) { - struct protid *cred = diskfs_start_protid (po); - diskfs_finish_protid (cred, uids, nuids, gids, ngids); + struct protid *cred; + if (diskfs_create_protid (po, uids, nuids, gids, ngids, &cred)) + cred = 0; return cred; } - - |