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https://github.com/brain-hackers/u-boot-brain
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2eb1573f01
The non-reentrant versions of the hashtable functions operate on a single shared hashtable. So if two different people try using these funcs for two different purposes, they'll cause problems for the other. Avoid this by converting all existing hashtable consumers over to the reentrant versions and then punting the non-reentrant ones. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/*
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* Declarations for System V style searching functions.
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* Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
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* This file is part of the GNU C Library.
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*
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* The GNU C Library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* The GNU C Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with the GNU C Library; if not, write to the Free
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* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA.
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*/
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/*
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* Based on code from uClibc-0.9.30.3
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* Extensions for use within U-Boot
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* Copyright (C) 2010 Wolfgang Denk <wd@denx.de>
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*/
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#ifndef _SEARCH_H
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#define _SEARCH_H 1
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#include <stddef.h>
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#define __set_errno(val) do { errno = val; } while (0)
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/* Action which shall be performed in the call the hsearch. */
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typedef enum {
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FIND,
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ENTER
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} ACTION;
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typedef struct entry {
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char *key;
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char *data;
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} ENTRY;
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/* Opaque type for internal use. */
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struct _ENTRY;
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/*
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* Family of hash table handling functions. The functions also
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* have reentrant counterparts ending with _r. The non-reentrant
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* functions all work on a signle internal hashing table.
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*/
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/* Data type for reentrant functions. */
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struct hsearch_data {
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struct _ENTRY *table;
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unsigned int size;
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unsigned int filled;
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};
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/* Create a new hashing table which will at most contain NEL elements. */
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extern int hcreate_r(size_t __nel, struct hsearch_data *__htab);
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/* Destroy current internal hashing table. */
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extern void hdestroy_r(struct hsearch_data *__htab);
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/*
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* Search for entry matching ITEM.key in internal hash table. If
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* ACTION is `FIND' return found entry or signal error by returning
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* NULL. If ACTION is `ENTER' replace existing data (if any) with
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* ITEM.data.
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* */
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extern int hsearch_r(ENTRY __item, ACTION __action, ENTRY ** __retval,
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struct hsearch_data *__htab);
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/* Search and delete entry matching ITEM.key in internal hash table. */
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extern int hdelete_r(const char *__key, struct hsearch_data *__htab);
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extern ssize_t hexport_r(struct hsearch_data *__htab,
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const char __sep, char **__resp, size_t __size);
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extern int himport_r(struct hsearch_data *__htab,
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const char *__env, size_t __size, const char __sep,
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int __flag);
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/* Flags for himport_r() */
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#define H_NOCLEAR 1 /* do not clear hash table before importing */
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#endif /* search.h */
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