diff options
Diffstat (limited to 'nis/nis_util.c')
| -rw-r--r-- | nis/nis_util.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/nis/nis_util.c b/nis/nis_util.c new file mode 100644 index 0000000000..4e39d6fb6a --- /dev/null +++ b/nis/nis_util.c @@ -0,0 +1,99 @@ +/* Copyright (c) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <string.h> +#include <rpcsvc/nis.h> +#include "nis_intern.h" + +fd_result * +__nis_finddirectory (directory_obj *dir, const_nis_name name) +{ + fd_args fd_args; + fd_result *fd_res; + + fd_args.dir_name = strdup (name); + fd_args.requester = nis_local_host(); + fd_res = calloc (1, sizeof (fd_result)); + + if (__do_niscall2 (dir->do_servers.do_servers_val, + dir->do_servers.do_servers_len, NIS_FINDDIRECTORY, + (xdrproc_t) xdr_fd_args, + (caddr_t) &fd_args, (xdrproc_t) xdr_fd_result, + (caddr_t) fd_res, NO_AUTHINFO|USE_DGRAM) != NIS_SUCCESS) + fd_res->status = NIS_RPCERROR; + + return fd_res; +} + +/* This is from libc/db/hash/hash_func.c, hash3 is static there */ +/* + * This is INCREDIBLY ugly, but fast. We break the string up into 8 byte + * units. On the first time through the loop we get the "leftover bytes" + * (strlen % 8). On every other iteration, we perform 8 HASHC's so we handle + * all 8 bytes. Essentially, this saves us 7 cmp & branch instructions. If + * this routine is heavily used enough, it's worth the ugly coding. + * + * OZ's original sdbm hash + */ +unsigned long +__nis_hash (const void *keyarg, register size_t len) +{ + register const u_char *key; + register size_t loop; + register u_int32_t h; + +#define HASHC h = *key++ + 65599 * h + + h = 0; + key = keyarg; + if (len > 0) + { + loop = (len + 8 - 1) >> 3; + switch (len & (8 - 1)) + { + case 0: + do { + HASHC; + /* FALLTHROUGH */ + case 7: + HASHC; + /* FALLTHROUGH */ + case 6: + HASHC; + /* FALLTHROUGH */ + case 5: + HASHC; + /* FALLTHROUGH */ + case 4: + HASHC; + /* FALLTHROUGH */ + case 3: + HASHC; + /* FALLTHROUGH */ + case 2: + HASHC; + /* FALLTHROUGH */ + case 1: + HASHC; + } while (--loop); + } + } + return (h); +} + |