+// SPDX-License-Identifier: LGPL-2.1+
/*
* This implementation is based on code from uClibc-0.9.30.3 but was
* modified and extended for use within U-Boot.
* Copyright (C) 1993, 1995, 1996, 1997, 2002 Free Software Foundation, Inc.
* This file is part of the GNU C Library.
* Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1993.
- *
- * SPDX-License-Identifier: LGPL-2.1+
*/
#include <errno.h>
#define CONFIG_ENV_MAX_ENTRIES 512
#endif
+#define USED_FREE 0
+#define USED_DELETED -1
+
#include <env_callback.h>
#include <env_flags.h>
#include <search.h>
*/
unsigned hval2;
- if (htab->table[idx].used == -1
+ if (htab->table[idx].used == USED_DELETED
&& !first_deleted)
first_deleted = idx;
if (idx == hval)
break;
+ if (htab->table[idx].used == USED_DELETED
+ && !first_deleted)
+ first_deleted = idx;
+
/* If entry is found use it. */
ret = _compare_and_overwrite_entry(item, action, retval,
htab, flag, hval, idx);
if (ret != -1)
return ret;
}
- while (htab->table[idx].used);
+ while (htab->table[idx].used != USED_FREE);
}
/* An empty bucket has been found. */
free(ep->data);
ep->callback = NULL;
ep->flags = 0;
- htab->table[idx].used = -1;
+ htab->table[idx].used = USED_DELETED;
--htab->filled;
}
return 1;
}
+#if !(defined(CONFIG_SPL_BUILD) && !defined(CONFIG_SPL_SAVEENV))
/*
* hexport()
*/
-#ifndef CONFIG_SPL_BUILD
/*
* Export the data stored in the hash table in linearized form.
*
*
* If the separator character is different from NUL, then any
* separator characters and backslash characters in the values will
- * be escaped by a preceeding backslash in output. This is needed for
+ * be escaped by a preceding backslash in output. This is needed for
* example to enable multi-line values, especially when the output
* shall later be parsed (for example, for re-import).
*
case H_MATCH_REGEX:
{
struct slre *slrep = (struct slre *)priv;
- struct cap caps[slrep->num_caps + 2];
- if (slre_match(slrep, str, strlen(str), caps))
+ if (slre_match(slrep, str, strlen(str), NULL))
return 1;
}
break;
list[n++] = ep;
- totlen += strlen(ep->key) + 2;
+ totlen += strlen(ep->key);
if (sep == '\0') {
totlen += strlen(ep->data);
*
* The "flag" argument can be used to control the behaviour: when the
* H_NOCLEAR bit is set, then an existing hash table will kept, i. e.
- * new data will be added to an existing hash table; otherwise, old
- * data will be discarded and a new hash table will be created.
+ * new data will be added to an existing hash table; otherwise, if no
+ * vars are passed, old data will be discarded and a new hash table
+ * will be created. If vars are passed, passed vars that are not in
+ * the linear list of "name=value" pairs will be removed from the
+ * current hash table.
*
* The separator character for the "name=value" pairs can be selected,
* so we both support importing from externally stored environment
if (nvars)
memcpy(localvars, vars, sizeof(vars[0]) * nvars);
- if ((flag & H_NOCLEAR) == 0) {
+ if ((flag & H_NOCLEAR) == 0 && !nvars) {
/* Destroy old hash table if one exists */
debug("Destroy Hash Table: %p table = %p\n", htab,
htab->table);
debug("INSERT: free(data = %p)\n", data);
free(data);
+ if (flag & H_NOCLEAR)
+ goto end;
+
/* process variables which were not considered */
for (i = 0; i < nvars; i++) {
if (localvars[i] == NULL)
printf("WARNING: '%s' not in imported env, deleting it!\n", localvars[i]);
}
+end:
debug("INSERT: done\n");
return 1; /* everything OK */
}