Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / include / search.h

diff --git a/qemu/roms/u-boot/include/search.h b/qemu/roms/u-boot/include/search.h
new file mode 100644 (file)
index 0000000..ae3efc4
--- /dev/null
+++ b/qemu/roms/u-boot/include/search.h
@@ -0,0 +1,123 @@
+/*
+ * 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.
+ *
+ * SPDX-License-Identifier:    LGPL-2.1+
+ */
+
+/*
+ * Based on code from uClibc-0.9.30.3
+ * Extensions for use within U-Boot
+ * Copyright (C) 2010-2013 Wolfgang Denk <wd@denx.de>
+ */
+
+#ifndef _SEARCH_H
+#define        _SEARCH_H 1
+
+#include <stddef.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,
+       ENTER
+} ACTION;
+
+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.  */
+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.
+ */
+
+/* Data type for reentrant functions.  */
+struct hsearch_data {
+       struct _ENTRY *table;
+       unsigned int size;
+       unsigned int filled;
+/*
+ * Callback function which will check whether the given change for variable
+ * "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 (*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);
+
+/*
+ * 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.
+ * */
+extern int hsearch_r(ENTRY __item, ACTION __action, ENTRY ** __retval,
+                    struct hsearch_data *__htab, int __flag);
+
+/*
+ * 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);
+
+/* Search and delete entry matching ITEM.key in internal hash table. */
+extern 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[]);
+
+/*
+ * 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[]);
+
+/* 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 */