X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fsearch.h;h=7faf23f4aca255554acc3e60c88d1dd7bd6989b2;hb=9ff4ce8abc627b8696c9bd6fd726dd1dbf4b9a5c;hp=d9ac8dfa071c6a24b7b49635900003436ab34105;hpb=be29df6a1ac286e6c482828db28ca96e187c7e00;p=platform%2Fkernel%2Fu-boot.git diff --git a/include/search.h b/include/search.h index d9ac8df..7faf23f 100644 --- a/include/search.h +++ b/include/search.h @@ -1,22 +1,8 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ /* * Declarations for System V style searching functions. * Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc. * This file is part of the GNU C Library. - * - * The GNU C Library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with the GNU C Library; if not, write to the Free - * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - * 02111-1307 USA. */ /* @@ -25,45 +11,40 @@ * Copyright (C) 2010-2013 Wolfgang Denk */ -#ifndef _SEARCH_H -#define _SEARCH_H 1 +#ifndef _SEARCH_H_ +#define _SEARCH_H_ +#include #include -#define __set_errno(val) do { errno = val; } while (0) +#define set_errno(val) do { errno = val; } while (0) -enum env_op { - env_op_create, - env_op_delete, - env_op_overwrite, +/* enum env_action: action which shall be performed in the call to hsearch */ +enum env_action { + ENV_FIND, + ENV_ENTER, }; -/* Action which shall be performed in the call the hsearch. */ -typedef enum { - FIND, - ENTER -} ACTION; - -typedef struct entry { +/** struct env_entry - An entry in the environment hashtable */ +struct env_entry { const char *key; char *data; +#ifndef CONFIG_SPL_BUILD int (*callback)(const char *name, const char *value, enum env_op op, int flags); +#endif int flags; -} ENTRY; - -/* Opaque type for internal use. */ -struct _ENTRY; +}; /* * Family of hash table handling functions. The functions also * have reentrant counterparts ending with _r. The non-reentrant - * functions all work on a signle internal hashing table. + * functions all work on a single internal hash table. */ /* Data type for reentrant functions. */ struct hsearch_data { - struct _ENTRY *table; + struct env_entry_node *table; unsigned int size; unsigned int filled; /* @@ -71,54 +52,60 @@ struct hsearch_data { * "item" to "newval" may be applied or not, and possibly apply such change. * When (flag & H_FORCE) is set, it shall not print out any error message and * shall force overwriting of write-once variables. -.* Must return 0 for approval, 1 for denial. + * Must return 0 for approval, 1 for denial. */ - int (*change_ok)(const ENTRY *__item, const char *newval, enum env_op, - int flag); + int (*change_ok)(const struct env_entry *item, const char *newval, + enum env_op, int flag); }; -/* Create a new hashing table which will at most contain NEL elements. */ -extern int hcreate_r(size_t __nel, struct hsearch_data *__htab); +/* Create a new hash table which will contain at most "nel" elements. */ +int hcreate_r(size_t nel, struct hsearch_data *htab); -/* Destroy current internal hashing table. */ -extern void hdestroy_r(struct hsearch_data *__htab); +/* Destroy current internal hash table. */ +void hdestroy_r(struct hsearch_data *htab); /* - * Search for entry matching ITEM.key in internal hash table. If - * ACTION is `FIND' return found entry or signal error by returning - * NULL. If ACTION is `ENTER' replace existing data (if any) with - * ITEM.data. + * Search for entry matching item.key in internal hash table. If + * action is `ENV_FIND' return found entry or signal error by returning + * NULL. If action is `ENV_ENTER' replace existing data (if any) with + * item.data. * */ -extern int hsearch_r(ENTRY __item, ACTION __action, ENTRY ** __retval, - struct hsearch_data *__htab, int __flag); +int hsearch_r(struct env_entry item, enum env_action action, + struct env_entry **retval, struct hsearch_data *htab, int flag); /* - * Search for an entry matching `MATCH'. Otherwise, Same semantics + * Search for an entry matching "match". Otherwise, Same semantics * as hsearch_r(). */ -extern int hmatch_r(const char *__match, int __last_idx, ENTRY ** __retval, - struct hsearch_data *__htab); +int hmatch_r(const char *match, int last_idx, struct env_entry **retval, + struct hsearch_data *htab); -/* Search and delete entry matching ITEM.key in internal hash table. */ -extern int hdelete_r(const char *__key, struct hsearch_data *__htab, - int __flag); +/** + * hdelete_r() - Search and delete entry in internal hash table + * + * @key: Name of entry to delete + * @htab: Hash table + * @flag: Flags to use (H_...) + * Return: 0 on success, -ENOENT if not found, -EPERM if the hash table callback + * rejected changing the variable, -EINVAL if the hash table refused to + * delete the variable + */ +int hdelete_r(const char *key, struct hsearch_data *htab, int flag); -extern ssize_t hexport_r(struct hsearch_data *__htab, - const char __sep, int __flag, char **__resp, size_t __size, - int argc, char * const argv[]); +ssize_t hexport_r(struct hsearch_data *htab, const char sep, int flag, + char **resp, size_t size, int argc, char *const argv[]); /* * nvars: length of vars array * vars: array of strings (variable names) to import (nvars == 0 means all) - * do_apply: whether to call callback function to check the new argument, - * and possibly apply changes (false means accept everything) */ -extern int himport_r(struct hsearch_data *__htab, - const char *__env, size_t __size, const char __sep, - int __flag, int nvars, char * const vars[]); +int himport_r(struct hsearch_data *htab, const char *env, size_t size, + const char sep, int flag, int crlf_is_lf, int nvars, + char * const vars[]); /* Walk the whole table calling the callback on each element */ -extern int hwalk_r(struct hsearch_data *__htab, int (*callback)(ENTRY *)); +int hwalk_r(struct hsearch_data *htab, + int (*callback)(struct env_entry *entry)); /* Flags for himport_r(), hexport_r(), hdelete_r(), and hsearch_r() */ #define H_NOCLEAR (1 << 0) /* do not clear hash table before importing */ @@ -132,5 +119,9 @@ extern int hwalk_r(struct hsearch_data *__htab, int (*callback)(ENTRY *)); #define H_MATCH_SUBSTR (1 << 7) /* search for substring matches */ #define H_MATCH_REGEX (1 << 8) /* search for regular expression matches */ #define H_MATCH_METHOD (H_MATCH_IDENT | H_MATCH_SUBSTR | H_MATCH_REGEX) +#define H_PROGRAMMATIC (1 << 9) /* indicate that an import is from env_set() */ +#define H_ORIGIN_FLAGS (H_INTERACTIVE | H_PROGRAMMATIC) +#define H_DEFAULT (1 << 10) /* indicate that an import is default env */ +#define H_EXTERNAL (1 << 11) /* indicate that an import is external env */ -#endif /* search.h */ +#endif /* _SEARCH_H_ */