2 * Declarations for System V style searching functions.
3 * Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
4 * This file is part of the GNU C Library.
6 * The GNU C Library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with the GNU C Library; if not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 * Based on code from uClibc-0.9.30.3
24 * Extensions for use within U-Boot
25 * Copyright (C) 2010 Wolfgang Denk <wd@denx.de>
33 #define __set_errno(val) do { errno = val; } while (0)
35 /* Action which shall be performed in the call the hsearch. */
41 typedef struct entry {
46 /* Opaque type for internal use. */
50 * Family of hash table handling functions. The functions also
51 * have reentrant counterparts ending with _r. The non-reentrant
52 * functions all work on a signle internal hashing table.
55 /* Data type for reentrant functions. */
62 /* Create a new hashing table which will at most contain NEL elements. */
63 extern int hcreate_r(size_t __nel, struct hsearch_data *__htab);
65 /* Destroy current internal hashing table. */
66 extern void hdestroy_r(struct hsearch_data *__htab);
69 * Search for entry matching ITEM.key in internal hash table. If
70 * ACTION is `FIND' return found entry or signal error by returning
71 * NULL. If ACTION is `ENTER' replace existing data (if any) with
74 extern int hsearch_r(ENTRY __item, ACTION __action, ENTRY ** __retval,
75 struct hsearch_data *__htab);
78 * Search for an entry matching `MATCH'. Otherwise, Same semantics
81 extern int hmatch_r(const char *__match, int __last_idx, ENTRY ** __retval,
82 struct hsearch_data *__htab);
84 * Search for an entry whose key or data contains `MATCH'. Otherwise,
85 * Same semantics as hsearch_r().
87 extern int hstrstr_r(const char *__match, int __last_idx, ENTRY ** __retval,
88 struct hsearch_data *__htab);
90 /* Search and delete entry matching ITEM.key in internal hash table. */
91 extern int hdelete_r(const char *__key, struct hsearch_data *__htab);
93 extern ssize_t hexport_r(struct hsearch_data *__htab,
94 const char __sep, char **__resp, size_t __size);
96 extern int himport_r(struct hsearch_data *__htab,
97 const char *__env, size_t __size, const char __sep,
100 /* Flags for himport_r() */
101 #define H_NOCLEAR 1 /* do not clear hash table before importing */
103 #endif /* search.h */