* 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.
+ * SPDX-License-Identifier: LGPL-2.1+
*/
/*
* Based on code from uClibc-0.9.30.3
* Extensions for use within U-Boot
- * Copyright (C) 2010 Wolfgang Denk <wd@denx.de>
+ * Copyright (C) 2010-2013 Wolfgang Denk <wd@denx.de>
*/
#ifndef _SEARCH_H
#define __set_errno(val) do { errno = val; } while (0)
+enum env_op {
+ env_op_create,
+ env_op_delete,
+ env_op_overwrite,
+};
+
/* Action which shall be performed in the call the hsearch. */
typedef enum {
FIND,
typedef struct entry {
const char *key;
char *data;
+ int (*callback)(const char *name, const char *value, enum env_op op,
+ int flags);
+ int flags;
} ENTRY;
/* Opaque type for internal use. */
unsigned int filled;
/*
* Callback function which will check whether the given change for variable
- * "name" from "oldval" to "newval" may be applied or not, and possibly apply
- * such change.
+ * "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.
*/
- int (*apply)(const char *name, const char *oldval,
- const char *newval, int flag);
+ int (*change_ok)(const 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);
/* Destroy current internal hashing table. */
-extern void hdestroy_r(struct hsearch_data *__htab, int do_apply);
+extern void hdestroy_r(struct hsearch_data *__htab);
/*
* Search for entry matching ITEM.key in internal hash table. If
* ITEM.data.
* */
extern int hsearch_r(ENTRY __item, ACTION __action, ENTRY ** __retval,
- struct hsearch_data *__htab);
+ struct hsearch_data *__htab, int __flag);
/*
* Search for an entry matching `MATCH'. Otherwise, Same semantics
*/
extern int hmatch_r(const char *__match, int __last_idx, ENTRY ** __retval,
struct hsearch_data *__htab);
-/*
- * Search for an entry whose key or data contains `MATCH'. Otherwise,
- * Same semantics as hsearch_r().
- */
-extern int hstrstr_r(const char *__match, int __last_idx, 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 do_apply);
+ int __flag);
extern ssize_t hexport_r(struct hsearch_data *__htab,
- const char __sep, char **__resp, size_t __size,
+ const char __sep, int __flag, char **__resp, size_t __size,
int argc, char * const argv[]);
/*
*/
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 do_apply);
-
-/* Flags for himport_r() */
-#define H_NOCLEAR (1 << 0) /* do not clear hash table before importing */
-#define H_FORCE (1 << 1) /* overwrite read-only/write-once variables */
+ int __flag, 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 *));
+
+/* Flags for himport_r(), hexport_r(), hdelete_r(), and hsearch_r() */
+#define H_NOCLEAR (1 << 0) /* do not clear hash table before importing */
+#define H_FORCE (1 << 1) /* overwrite read-only/write-once variables */
+#define H_INTERACTIVE (1 << 2) /* indicate that an import is user directed */
+#define H_HIDE_DOT (1 << 3) /* don't print env vars that begin with '.' */
+#define H_MATCH_KEY (1 << 4) /* search/grep key = variable names */
+#define H_MATCH_DATA (1 << 5) /* search/grep data = variable values */
+#define H_MATCH_BOTH (H_MATCH_KEY | H_MATCH_DATA) /* search/grep both */
+#define H_MATCH_IDENT (1 << 6) /* search for indentical strings */
+#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)
#endif /* search.h */
projects / karo-tx-uboot.git / blobdiff