From 606f38a2221648ca5c5fa292c9f71d2ddd59fa66 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Tue, 17 Mar 2009 10:14:54 +0200 Subject: ubi-utils: re-arrange directory layout Move new-utils to ubi-utils and old ones to ubi-utils/old-utils. Signed-off-by: Artem Bityutskiy --- ubi-utils/src/bootenv.c | 1032 ----------------------------------------------- 1 file changed, 1032 deletions(-) delete mode 100644 ubi-utils/src/bootenv.c (limited to 'ubi-utils/src/bootenv.c') diff --git a/ubi-utils/src/bootenv.c b/ubi-utils/src/bootenv.c deleted file mode 100644 index 78198fe..0000000 --- a/ubi-utils/src/bootenv.c +++ /dev/null @@ -1,1032 +0,0 @@ -/* - * Copyright (c) International Business Machines Corp., 2008 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Author: Oliver Lohmann - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "hashmap.h" -#include "error.h" - -#include -#include "crc32.h" - -#define ubi_unused __attribute__((unused)) - -#define BOOTENV_MAXLINE 512 /* max line size of a bootenv.txt file */ - -/* Structures */ -struct bootenv { - hashmap_t map; ///< Pointer to hashmap which holds data structure. -}; - -struct bootenv_list { - hashmap_t head; ///< Pointer to list which holds the data structure. -}; - -/** - * @brief Remove the '\n' from a given line. - * @param line Input/Output line. - * @param size Size of the line. - * @param fp File Pointer. - * @return 0 - * @return or error - */ -static int -remove_lf(char *line, size_t size, FILE* fp) -{ - size_t i; - - for (i = 0; i < size; i++) { - if (line[i] == '\n') { - line[i] = '\0'; - return 0; - } - } - - if (!feof(fp)) { - return BOOTENV_EINVAL; - } - - return 0; -} - -/** - * @brief Determine if a line contains only WS. - * @param line The line to process. - * @param size Size of input line. - * @return 1 Yes, only WS. - * @return 0 No, contains data. - */ -static int -is_ws(const char *line, size_t size) -{ - size_t i = 0; - - while (i < size) { - switch (line[i]) { - case '\n': - return 1; - case '#': - return 1; - case ' ': - i++; - continue; - case '\t': - i++; - continue; - default: /* any other char -> no cmnt */ - return 0; - } - } - - return 0; -} - - -/* ------------------------------------------------------------------------- */ - -/** - * @brief Build a list from a comma seperated value string. - * @param list Pointer to hashmap structure which shall store - * the list. - * @param value Comma seperated value string. - * @return 0 - * @return or error. - */ -static int -build_list_definition(hashmap_t list, const char *value) -{ - int rc = 0; - char *str = NULL; - char *ptr = NULL; - size_t len, i, j; - - /* str: val1,val2 , val4,...,valN */ - len = strlen(value); - str = (char*) malloc((len+1) * sizeof(char)); - - /* 1. reformat string: remove spaces */ - for (i = 0, j = 0; i < len; i++) { - if (value[i] == ' ') - continue; - - str[j] = value[i]; - j++; - } - str[j] = '\0'; - - /* str: val1,val2,val4,...,valN\0*/ - /* 2. replace ',' seperator with '\0' */ - len = strlen(str); - for (i = 0; i < len; i++) { - if (str[i] == ',') { - str[i] = '\0'; - } - } - - /* str: val1\0val2\0val4\0...\0valN\0*/ - /* 3. insert definitions into a hash map, using it like a list */ - i = j = 0; - ptr = str; - while (((i = strlen(ptr)) > 0) && (j < len)) { - rc = hashmap_add(list, ptr, ""); - if (rc != 0) { - free(str); - return rc; - } - j += i+1; - if (j < len) - ptr += i+1; - } - - free(str); - return rc; -} - -/** - * @brief Extract a key value pair and add it to a hashmap - * @param str Input string which contains a key value pair. - * @param env The updated handle which contains the new pair. - * @return 0 - * @return or error - * @note The input string format is: "key=value" - */ -static int -extract_pair(const char *str, bootenv_t env) -{ - int rc = 0; - char *key = NULL; - char *val = NULL; - - key = strdup(str); - if (key == NULL) - return -ENOMEM; - - val = strstr(key, "="); - if (val == NULL) { - rc = BOOTENV_EBADENTRY; - goto err; - } - - *val = '\0'; /* split strings */ - val++; - - rc = bootenv_set(env, key, val); - - err: - free(key); - return rc; -} - -int -bootenv_destroy(bootenv_t* env) -{ - int rc = 0; - - if (env == NULL || *env == NULL) - return -EINVAL; - - bootenv_t tmp = *env; - - rc = hashmap_free(tmp->map); - if (rc != 0) - return rc; - - free(tmp); - return rc; -} - -int -bootenv_create(bootenv_t* env) -{ - bootenv_t res; - res = (bootenv_t) calloc(1, sizeof(struct bootenv)); - - if (res == NULL) - return -ENOMEM; - - res->map = hashmap_new(); - - if (res->map == NULL) { - free(res); - return -ENOMEM; - } - - *env = res; - - return 0; -} - - -/** - * @brief Read a formatted buffer and scan it for valid bootenv - * key/value pairs. Add those pairs into a hashmap. - * @param env Hashmap which shall be used to hold the data. - * @param buf Formatted buffer. - * @param size Size of the buffer. - * @return 0 - * @return or error - */ -static int -rd_buffer(bootenv_t env, const char *buf, size_t size) -{ - const char *curr = buf; /* ptr to current key/value pair */ - uint32_t i, j; /* current length, chars processed */ - - if (buf[size - 1] != '\0') /* must end in '\0' */ - return BOOTENV_EFMT; - - for (j = 0; j < size; j += i, curr += i) { - /* strlen returns the size of the string upto - but not including the null terminator; - adding 1 to account for '\0' */ - i = strlen(curr) + 1; - - if (i == 1) - return 0; /* no string found */ - - if (extract_pair(curr, env) != 0) - return BOOTENV_EINVAL; - } - - return 0; -} - - -int -bootenv_read_crc(FILE* fp, bootenv_t env, size_t size, uint32_t* ret_crc) -{ - int rc; - char *buf = NULL; - size_t i = 0; - uint32_t crc32_table[256]; - - if ((fp == NULL) || (env == NULL)) - return -EINVAL; - - /* allocate temp buffer */ - buf = (char*) calloc(1, size * sizeof(char)); - if (buf == NULL) - return -ENOMEM; - - /* FIXME Andreas, please review this I removed size-1 and - * replaced it by just size, I saw the kernel image starting - * with a 0x0060.... and not with the 0x60.... what it should - * be. Is this a tools problem or is it a problem here where - * fp is moved not to the right place due to the former size-1 - * here. - */ - while((i < size) && (!feof(fp))) { - int c = fgetc(fp); - if (c == EOF) { - /* FIXME isn't this dangerous, to update - the boot envs with incomplete data? */ - buf[i++] = '\0'; - break; /* we have enough */ - } - if (ferror(fp)) { - rc = -EIO; - goto err; - } - - buf[i++] = (char)c; - } - - /* calculate crc to return */ - if (ret_crc != NULL) { - init_crc32_table(crc32_table); - *ret_crc = clc_crc32(crc32_table, UBI_CRC32_INIT, buf, size); - } - - /* transfer to hashmap */ - rc = rd_buffer(env, buf, size); - -err: - free(buf); - return rc; -} - - -/** - * If we have a single file containing the boot-parameter size should - * be specified either as the size of the file or as BOOTENV_MAXSIZE. - * If the bootparameter are in the middle of a file we need the exact - * length of the data. - */ -int -bootenv_read(FILE* fp, bootenv_t env, size_t size) -{ - return bootenv_read_crc(fp, env, size, NULL); -} - - -int -bootenv_read_txt(FILE* fp, bootenv_t env) -{ - int rc = 0; - char *buf = NULL; - char *line = NULL; - char *lstart = NULL; - char *curr = NULL; - size_t len; - size_t size; - - if ((fp == NULL) || (env == NULL)) - return -EINVAL; - - size = BOOTENV_MAXSIZE; - - /* allocate temp buffers */ - buf = (char*) calloc(1, size * sizeof(char)); - lstart = line = (char*) calloc(1, size * sizeof(char)); - if ((buf == NULL) || (line == NULL)) { - rc = -ENOMEM; - goto err; - } - - curr = buf; - while ((line = fgets(line, size, fp)) != NULL) { - if (is_ws(line, size)) { - continue; - } - rc = remove_lf(line, BOOTENV_MAXSIZE, fp); - if (rc != 0) { - goto err; - } - - /* copy new line to binary buffer */ - len = strlen(line); - if (len > size) { - rc = -EFBIG; - goto err; - } - size -= len; /* track remaining space */ - - memcpy(curr, line, len); - curr += len + 1; /* for \0 seperator */ - } - - rc = rd_buffer(env, buf, BOOTENV_MAXSIZE); -err: - if (buf != NULL) - free(buf); - if (lstart != NULL) - free(lstart); - return rc; -} - -static int -fill_output_buffer(bootenv_t env, char *buf, size_t buf_size_max ubi_unused, - size_t *written) -{ - int rc = 0; - size_t keys_size, i; - size_t wr = 0; - const char **keys = NULL; - const char *val = NULL; - - rc = bootenv_get_key_vector(env, &keys_size, 1, &keys); - if (rc != 0) - goto err; - - for (i = 0; i < keys_size; i++) { - if (wr > BOOTENV_MAXSIZE) { - rc = -ENOSPC; - goto err; - } - - rc = bootenv_get(env, keys[i], &val); - if (rc != 0) - goto err; - - wr += snprintf(buf + wr, BOOTENV_MAXSIZE - wr, - "%s=%s", keys[i], val); - wr++; /* for \0 */ - } - - *written = wr; - -err: - if (keys != NULL) - free(keys); - - return rc; -} - -int -bootenv_write_crc(FILE* fp, bootenv_t env, uint32_t* ret_crc) -{ - int rc = 0; - size_t size = 0; - char *buf = NULL; - uint32_t crc32_table[256]; - - if ((fp == NULL) || (env == NULL)) - return -EINVAL; - - buf = (char*) calloc(1, BOOTENV_MAXSIZE * sizeof(char)); - if (buf == NULL) - return -ENOMEM; - - - rc = fill_output_buffer(env, buf, BOOTENV_MAXSIZE, &size); - if (rc != 0) - goto err; - - /* calculate crc to return */ - if (ret_crc != NULL) { - init_crc32_table(crc32_table); - *ret_crc = clc_crc32(crc32_table, UBI_CRC32_INIT, buf, size); - } - - if (fwrite(buf, size, 1, fp) != 1) { - rc = -EIO; - goto err; - } - -err: - if (buf != NULL) - free(buf); - return rc; -} - -int -bootenv_write(FILE* fp, bootenv_t env) -{ - return bootenv_write_crc(fp, env, NULL); -} - -int -bootenv_compare(bootenv_t first, bootenv_t second) -{ - int rc; - size_t written_first, written_second; - char *buf_first, *buf_second; - - if (first == NULL || second == NULL) - return -EINVAL; - - buf_first = malloc(BOOTENV_MAXSIZE); - if (!buf_first) - return -ENOMEM; - buf_second = malloc(BOOTENV_MAXSIZE); - if (!buf_second) { - rc = -ENOMEM; - goto err; - } - - rc = fill_output_buffer(first, buf_first, BOOTENV_MAXSIZE, - &written_first); - if (rc < 0) - goto err; - rc = fill_output_buffer(second, buf_second, BOOTENV_MAXSIZE, - &written_second); - if (rc < 0) - goto err; - - if (written_first != written_second) { - rc = 1; - goto err; - } - - rc = memcmp(buf_first, buf_second, written_first); - if (rc != 0) { - rc = 2; - goto err; - } - -err: - if (buf_first) - free(buf_first); - if (buf_second) - free(buf_second); - - return rc; -} - -int -bootenv_size(bootenv_t env, size_t *size) -{ - int rc = 0; - char *buf = NULL; - - if (env == NULL) - return -EINVAL; - - buf = (char*) calloc(1, BOOTENV_MAXSIZE * sizeof(char)); - if (buf == NULL) - return -ENOMEM; - - rc = fill_output_buffer(env, buf, BOOTENV_MAXSIZE, size); - if (rc != 0) - goto err; - -err: - if (buf != NULL) - free(buf); - return rc; -} - -int -bootenv_write_txt(FILE* fp, bootenv_t env) -{ - int rc = 0; - size_t size, wr, i; - const char **keys = NULL; - const char *key = NULL; - const char *val = NULL; - - if ((fp == NULL) || (env == NULL)) - return -EINVAL; - - rc = bootenv_get_key_vector(env, &size, 1, &keys); - if (rc != 0) - goto err; - - for (i = 0; i < size; i++) { - key = keys[i]; - rc = bootenv_get(env, key, &val); - if (rc != 0) - goto err; - - wr = fprintf(fp, "%s=%s\n", key, val); - if (wr != strlen(key) + strlen(val) + 2) { - rc = -EIO; - goto err; - } - } - -err: - if (keys != NULL) - free(keys); - return rc; -} - -int -bootenv_valid(bootenv_t env ubi_unused) -{ - /* @FIXME No sanity check implemented. */ - return 0; -} - -int -bootenv_copy_bootenv(bootenv_t in, bootenv_t *out) -{ - int rc = 0; - const char *tmp = NULL; - const char **keys = NULL; - size_t vec_size, i; - - if ((in == NULL) || (out == NULL)) - return -EINVAL; - - /* purge output var for sure... */ - rc = bootenv_destroy(out); - if (rc != 0) - return rc; - - /* create the new map */ - rc = bootenv_create(out); - if (rc != 0) - goto err; - - /* get the key list from the input map */ - rc = bootenv_get_key_vector(in, &vec_size, 0, &keys); - if (rc != 0) - goto err; - - if (vec_size != hashmap_size(in->map)) { - rc = BOOTENV_ECOPY; - goto err; - } - - /* make a deep copy of the hashmap */ - for (i = 0; i < vec_size; i++) { - rc = bootenv_get(in, keys[i], &tmp); - if (rc != 0) - goto err; - - rc = bootenv_set(*out, keys[i], tmp); - if (rc != 0) - goto err; - } - -err: - if (keys != NULL) - free(keys); - - return rc; -} - -/* ------------------------------------------------------------------------- */ - - -int -bootenv_pdd_keep(bootenv_t env_old, bootenv_t env_new, bootenv_t *env_res, - int *warnings, char *err_buf ubi_unused, - size_t err_buf_size ubi_unused) -{ - bootenv_list_t l_old = NULL; - bootenv_list_t l_new = NULL; - const char *pdd_old = NULL; - const char *pdd_new = NULL; - const char *tmp = NULL; - const char **vec_old = NULL; - const char **vec_new = NULL; - const char **pdd_up_vec = NULL; - size_t vec_old_size, vec_new_size, pdd_up_vec_size, i; - int rc = 0; - - if ((env_old == NULL) || (env_new == NULL) || (env_res == NULL)) - return -EINVAL; - - /* get the pdd strings, e.g.: - * pdd_old=a,b,c - * pdd_new=a,c,d,e */ - rc = bootenv_get(env_old, "pdd", &pdd_old); - if (rc != 0) - goto err; - rc = bootenv_get(env_new, "pdd", &pdd_new); - if (rc != 0) - goto err; - - /* put it into a list and then convert it to an vector */ - rc = bootenv_list_create(&l_old); - if (rc != 0) - goto err; - rc = bootenv_list_create(&l_new); - if (rc != 0) - goto err; - - rc = bootenv_list_import(l_old, pdd_old); - if (rc != 0) - goto err; - - rc = bootenv_list_import(l_new, pdd_new); - if (rc != 0) - goto err; - - rc = bootenv_list_to_vector(l_old, &vec_old_size, &vec_old); - if (rc != 0) - goto err; - - rc = bootenv_list_to_vector(l_new, &vec_new_size, &vec_new); - if (rc != 0) - goto err; - - rc = bootenv_copy_bootenv(env_new, env_res); - if (rc != 0) - goto err; - - /* calculate the update vector between the old and new pdd */ - pdd_up_vec = hashmap_get_update_key_vector(vec_old, vec_old_size, - vec_new, vec_new_size, &pdd_up_vec_size); - - if (pdd_up_vec == NULL) { - rc = -ENOMEM; - goto err; - } - - if (pdd_up_vec_size != 0) { - /* need to warn the user about the unset of - * some pdd/bootenv values */ - *warnings = BOOTENV_WPDD_STRING_DIFFERS; - - /* remove all entries in the new bootenv load */ - for (i = 0; i < pdd_up_vec_size; i++) { - bootenv_unset(*env_res, pdd_up_vec[i]); - } - } - - /* generate the keep array and copy old pdd values to new bootenv */ - for (i = 0; i < vec_old_size; i++) { - rc = bootenv_get(env_old, vec_old[i], &tmp); - if (rc != 0) { - rc = BOOTENV_EPDDINVAL; - goto err; - } - rc = bootenv_set(*env_res, vec_old[i], tmp); - if (rc != 0) { - goto err; - } - } - /* put the old pdd string into the result map */ - rc = bootenv_set(*env_res, "pdd", pdd_old); - if (rc != 0) { - goto err; - } - - -err: - if (vec_old != NULL) - free(vec_old); - if (vec_new != NULL) - free(vec_new); - if (pdd_up_vec != NULL) - free(pdd_up_vec); - - bootenv_list_destroy(&l_old); - bootenv_list_destroy(&l_new); - return rc; -} - - -int -bootenv_pdd_overwrite(bootenv_t env_old, bootenv_t env_new, - bootenv_t *env_res, int *warnings ubi_unused, - char *err_buf ubi_unused, size_t err_buf_size ubi_unused) -{ - if ((env_old == NULL) || (env_new == NULL) || (env_res == NULL)) - return -EINVAL; - - return bootenv_copy_bootenv(env_new, env_res); -} - -int -bootenv_pdd_merge(bootenv_t env_old, bootenv_t env_new, bootenv_t *env_res, - int *warnings ubi_unused, char *err_buf, size_t err_buf_size) -{ - if ((env_old == NULL) || (env_new == NULL) || (env_res == NULL)) - return -EINVAL; - - snprintf(err_buf, err_buf_size, "The PDD merge operation is not " - "implemented. Contact: "); - - return BOOTENV_ENOTIMPL; -} - -/* ------------------------------------------------------------------------- */ - -int -bootenv_get(bootenv_t env, const char *key, const char **value) -{ - if (env == NULL) - return -EINVAL; - - *value = hashmap_lookup(env->map, key); - if (*value == NULL) - return BOOTENV_ENOTFOUND; - - return 0; -} - -int -bootenv_get_num(bootenv_t env, const char *key, uint32_t *value) -{ - char *endptr = NULL; - const char *str; - - if (env == NULL) - return 0; - - str = hashmap_lookup(env->map, key); - if (!str) - return -EINVAL; - - *value = strtoul(str, &endptr, 0); - - if (*endptr == '\0') { - return 0; - } - - return -EINVAL; -} - -int -bootenv_set(bootenv_t env, const char *key, const char *value) -{ - if (env == NULL) - return -EINVAL; - - return hashmap_add(env->map, key, value); -} - -int -bootenv_unset(bootenv_t env, const char *key) -{ - if (env == NULL) - return -EINVAL; - - return hashmap_remove(env->map, key); -} - -int -bootenv_get_key_vector(bootenv_t env, size_t* size, int sort, - const char ***vector) -{ - if ((env == NULL) || (size == NULL)) - return -EINVAL; - - *vector = hashmap_get_key_vector(env->map, size, sort); - - if (*vector == NULL) - return -EINVAL; - - return 0; -} - -int -bootenv_dump(bootenv_t env) -{ - if (env == NULL) - return -EINVAL; - - return hashmap_dump(env->map); -} - -int -bootenv_list_create(bootenv_list_t *list) -{ - bootenv_list_t res; - res = (bootenv_list_t) calloc(1, sizeof(struct bootenv_list)); - - if (res == NULL) - return -ENOMEM; - - res->head = hashmap_new(); - - if (res->head == NULL) { - free(res); - return -ENOMEM; - } - - *list = res; - return 0; -} - -int -bootenv_list_destroy(bootenv_list_t *list) -{ - int rc = 0; - - if (list == NULL) - return -EINVAL; - - bootenv_list_t tmp = *list; - if (tmp == 0) - return 0; - - rc = hashmap_free(tmp->head); - if (rc != 0) - return rc; - - free(tmp); - *list = NULL; - return 0; -} - -int -bootenv_list_import(bootenv_list_t list, const char *str) -{ - if (list == NULL) - return -EINVAL; - - return build_list_definition(list->head, str); -} - -int -bootenv_list_export(bootenv_list_t list, char **string) -{ - size_t size, i, j, bufsize, tmp, rc = 0; - const char **items; - - if (list == NULL) - return -EINVAL; - - bufsize = BOOTENV_MAXLINE; - char *res = (char*) malloc(bufsize * sizeof(char)); - if (res == NULL) - return -ENOMEM; - - rc = bootenv_list_to_vector(list, &size, &items); - if (rc != 0) { - goto err; - } - - j = 0; - for (i = 0; i < size; i++) { - tmp = strlen(items[i]); - if (j >= bufsize) { - bufsize += BOOTENV_MAXLINE; - res = (char*) realloc(res, bufsize * sizeof(char)); - if (res == NULL) { - rc = -ENOMEM; - goto err; - } - } - memcpy(res + j, items[i], tmp); - j += tmp; - if (i < (size - 1)) { - res[j] = ','; - j++; - } - } - j++; - res[j] = '\0'; - free(items); - *string = res; - return 0; -err: - free(items); - return rc; -} - -int -bootenv_list_add(bootenv_list_t list, const char *item) -{ - if ((list == NULL) || (item == NULL)) - return -EINVAL; - - return hashmap_add(list->head, item, ""); -} - -int -bootenv_list_remove(bootenv_list_t list, const char *item) -{ - if ((list == NULL) || (item == NULL)) - return -EINVAL; - - return hashmap_remove(list->head, item); -} - -int -bootenv_list_is_in(bootenv_list_t list, const char *item) -{ - if ((list == NULL) || (item == NULL)) - return -EINVAL; - - return hashmap_lookup(list->head, item) != NULL ? 1 : 0; -} - -int -bootenv_list_to_vector(bootenv_list_t list, size_t *size, const char ***vector) -{ - if ((list == NULL) || (size == NULL)) - return -EINVAL; - - *vector = hashmap_get_key_vector(list->head, size, 1); - if (*vector == NULL) - return -ENOMEM; - - return 0; -} - -int -bootenv_list_to_num_vector(bootenv_list_t list, size_t *size, - uint32_t **vector) -{ - int rc = 0; - size_t i; - uint32_t* res = NULL; - char *endptr = NULL; - const char **a = NULL; - - rc = bootenv_list_to_vector(list, size, &a); - if (rc != 0) - goto err; - - res = (uint32_t*) malloc (*size * sizeof(uint32_t)); - if (!res) - goto err; - - for (i = 0; i < *size; i++) { - res[i] = strtoul(a[i], &endptr, 0); - if (*endptr != '\0') - goto err; - } - - if (a) - free(a); - *vector = res; - return 0; - -err: - if (a) - free(a); - if (res) - free(res); - return rc; -} -- cgit v1.2.3