+// 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.
- *
- * 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.
*/
#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;
int arg;
void *priv = NULL;
- for (arg = 1; arg < argc; ++arg) {
+ for (arg = 0; arg < argc; ++arg) {
#ifdef CONFIG_REGEX
struct slre slre;
return (-1);
}
- debug("EXPORT table = %p, htab.size = %d, htab.filled = %d, "
- "size = %zu\n", htab, htab->size, htab->filled, size);
+ debug("EXPORT table = %p, htab.size = %d, htab.filled = %d, size = %lu\n",
+ htab, htab->size, htab->filled, (ulong)size);
/*
* Pass 1:
* search used entries,
list[n++] = ep;
- totlen += strlen(ep->key) + 2;
+ totlen += strlen(ep->key);
if (sep == '\0') {
totlen += strlen(ep->data);
/* Check if the user supplied buffer size is sufficient */
if (size) {
if (size < totlen + 1) { /* provided buffer too small */
- printf("Env export buffer too small: %zu, "
- "but need %zu\n", size, totlen + 1);
+ printf("Env export buffer too small: %lu, but need %lu\n",
+ (ulong)size, (ulong)totlen + 1);
__set_errno(ENOMEM);
return (-1);
}
*
* 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
int himport_r(struct hsearch_data *htab,
const char *env, size_t size, const char sep, int flag,
- int nvars, char * const vars[])
+ int crlf_is_lf, int nvars, char * const vars[])
{
char *data, *sp, *dp, *name, *value;
char *localvars[nvars];
}
/* we allocate new space to make sure we can write to the array */
- if ((data = malloc(size)) == NULL) {
- debug("himport_r: can't malloc %zu bytes\n", size);
+ if ((data = malloc(size + 1)) == NULL) {
+ debug("himport_r: can't malloc %lu bytes\n", (ulong)size + 1);
__set_errno(ENOMEM);
return 0;
}
memcpy(data, env, size);
+ data[size] = '\0';
dp = data;
/* make a local copy of the list of variables */
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);
* size of 8 per entry (= safety factor of ~5) should provide enough
* safety margin for any existing environment definitions and still
* allow for more than enough dynamic additions. Note that the
- * "size" argument is supposed to give the maximum enviroment size
+ * "size" argument is supposed to give the maximum environment size
* (CONFIG_ENV_SIZE). This heuristics will result in
* unreasonably large numbers (and thus memory footprint) for
* big flash environments (>8,000 entries for 64 KB
- * envrionment size), so we clip it to a reasonable value.
+ * environment size), so we clip it to a reasonable value.
* On the other hand we need to add some more entries for free
* space when importing very small buffers. Both boundaries can
* be overwritten in the board config file if needed.
}
}
+ if (!size) {
+ free(data);
+ return 1; /* everything OK */
+ }
+ if(crlf_is_lf) {
+ /* Remove Carriage Returns in front of Line Feeds */
+ unsigned ignored_crs = 0;
+ for(;dp < data + size && *dp; ++dp) {
+ if(*dp == '\r' &&
+ dp < data + size - 1 && *(dp+1) == '\n')
+ ++ignored_crs;
+ else
+ *(dp-ignored_crs) = *dp;
+ }
+ size -= ignored_crs;
+ dp = data;
+ }
/* Parse environment; allow for '\0' and 'sep' as separators */
do {
ENTRY e, *rv;
*sp++ = '\0'; /* terminate value */
++dp;
+ if (*name == 0) {
+ debug("INSERT: unable to use an empty key\n");
+ __set_errno(EINVAL);
+ free(data);
+ return 0;
+ }
+
/* Skip variables which are not supposed to be processed */
if (!drop_var_from_set(name, nvars, localvars))
continue;
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 */
}
projects / oweals / u-boot.git / blobdiff