366 lines
8.7 KiB
C
366 lines
8.7 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2006
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Author: Artem B. Bityutskiy
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*
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* The stuff which is common for many tests.
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*/
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include "libubi.h"
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#include "helpers.h"
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/**
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* __initial_check - check that common prerequisites which are required to run
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* tests.
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*
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* @test test name
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* @argc count of command-line arguments
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* @argv command-line arguments
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*
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* This function returns %0 if all is fine and test may be run and %-1 if not.
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*/
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int __initial_check(const char *test, int argc, char * const argv[])
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{
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libubi_t libubi;
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struct ubi_dev_info dev_info;
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/*
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* All tests require UBI character device name as the first parameter,
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* check this.
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*/
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if (argc < 2) {
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__errorm(test, __func__, __LINE__,
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"UBI character device node is not specified");
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return -1;
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}
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libubi = libubi_open();
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if (libubi == NULL) {
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__failed(test, __func__, __LINE__, "libubi_open");
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return -1;
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}
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if (ubi_get_dev_info(libubi, argv[1], &dev_info)) {
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__failed(test, __func__, __LINE__, "ubi_get_dev_info");
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goto close;
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}
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if (dev_info.avail_lebs < MIN_AVAIL_EBS) {
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__errorm(test, __func__, __LINE__,
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"insufficient available eraseblocks %d on UBI "
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"device, required %d",
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dev_info.avail_lebs, MIN_AVAIL_EBS);
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goto close;
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}
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if (dev_info.vol_count != 0) {
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__errorm(test, __func__, __LINE__,
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"device %s is not empty", argv[1]);
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goto close;
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}
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libubi_close(libubi);
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return 0;
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close:
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libubi_close(libubi);
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return -1;
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}
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/**
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* __errorm - print a message to stderr.
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*
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* @test test name
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* @func function name
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* @line line number
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* @fmt format string
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*/
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void __errorm(const char *test, const char *func, int line,
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const char *fmt, ...)
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{
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va_list args;
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fprintf(stderr, "[%s] %s():%d: ", test, func, line);
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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fprintf(stderr, "\n");
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va_end(args);
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}
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/**
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* __failed - print function fail message.
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*
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* @test test name
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* @func calling function name
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* @line line number
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* @failed failed function name
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*/
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void __failed(const char *test, const char *func, int line,
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const char *failed)
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{
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fprintf(stderr, "[%s] %s():%d: function %s() failed with error %d (%s)\n",
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test, func, line, failed, errno, strerror(errno));
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}
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/**
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* __check_volume - check volume information.
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*
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* @libubi libubi descriptor
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* @dev_info UBI device description
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* @test test name
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* @func function name
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* @line line number
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* @vol_id ID of existing volume to check
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* @req volume creation request to compare with
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*
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* This function checks if a volume created using @req request has exactly the
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* requested characteristics. Returns 0 in case of success and %-1 in case of
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* error.
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*/
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int __check_volume(libubi_t libubi, struct ubi_dev_info *dev_info,
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const char *test, const char *func, int line, int vol_id,
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const struct ubi_mkvol_request *req)
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{
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int ret;
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struct ubi_vol_info vol_info;
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int leb_size;
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long long rsvd_bytes;
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ret = ubi_get_vol_info1(libubi, dev_info->dev_num, vol_id, &vol_info);
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if (ret) {
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__failed(test, func, line, "ubi_get_vol_info");
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return -1;
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}
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if (req->alignment != vol_info.alignment) {
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__errorm(test, func, line,
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"bad alignment: requested %d, got %d",
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req->alignment, vol_info.alignment);
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return -1;
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}
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if (req->vol_type != vol_info.type) {
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__errorm(test, func, line, "bad type: requested %d, got %d",
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req->vol_type, vol_info.type);
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return -1;
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}
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if (strlen(req->name) != strlen(vol_info.name) ||
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strcmp(req->name, vol_info.name) != 0) {
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__errorm(test, func, line,
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"bad name: requested \"%s\", got \"%s\"",
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req->name, vol_info.name);
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return -1;
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}
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if (vol_info.corrupted) {
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__errorm(test, func, line, "corrupted new volume");
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return -1;
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}
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leb_size = dev_info->leb_size - (dev_info->leb_size % req->alignment);
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if (leb_size != vol_info.leb_size) {
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__errorm(test, func, line,
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"bad usable LEB size %d, should be %d",
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vol_info.leb_size, leb_size);
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return -1;
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}
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rsvd_bytes = req->bytes;
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if (rsvd_bytes % leb_size)
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rsvd_bytes += leb_size - (rsvd_bytes % leb_size);
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if (rsvd_bytes != vol_info.rsvd_bytes) {
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__errorm(test, func, line,
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"bad reserved bytes %lld, should be %lld",
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vol_info.rsvd_bytes, rsvd_bytes);
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return -1;
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}
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return 0;
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}
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/**
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* __check_vol_patt - check that volume contains certain data
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*
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* @libubi libubi descriptor
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* @test test name
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* @func function name
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* @line line number
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* @node volume character device node
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* @byte data pattern to check
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*
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* This function returns %0 if the volume contains only @byte bytes, and %-1 if
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* not.
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*/
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int __check_vol_patt(libubi_t libubi, const char *test, const char *func,
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int line, const char *node, uint8_t byte)
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{
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int ret, fd;
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long long bytes = 0;
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struct ubi_vol_info vol_info;
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unsigned char buf[512];
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fd = open(node, O_RDONLY);
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if (fd == -1) {
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__failed(test, func, line, "open");
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__errorm(test, func, line, "cannot open \"%s\"\n", node);
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return -1;
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}
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ret = ubi_get_vol_info(libubi, node, &vol_info);
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if (ret) {
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__failed(test, func, line, "ubi_get_vol_info");
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goto close;
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}
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while (bytes < vol_info.data_bytes) {
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int i;
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memset(buf, ~byte, 512);
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ret = read(fd, buf, 512);
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if (ret == -1) {
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__failed(test, func, line, "read");
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__errorm(test, func, line, "bytes = %lld, ret = %d",
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bytes, ret);
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goto close;
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}
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if (ret == 0 && bytes + ret < vol_info.data_bytes) {
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__errorm(test, func, line,
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"EOF, but read only %lld bytes of %lld",
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bytes + ret, vol_info.data_bytes);
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goto close;
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}
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for (i = 0; i < ret; i++)
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if (buf[i] != byte) {
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__errorm(test, func, line,
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"byte at %lld is not %#x but %#x",
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bytes + i, byte, (int)buf[i]);
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goto close;
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}
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bytes += ret;
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}
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close(fd);
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return 0;
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close:
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close(fd);
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return -1;
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}
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/**
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* __update_vol_patt - update volume using a certain byte pattern
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*
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* @libubi libubi descriptor
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* @dev_info UBI device description
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* @test test name
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* @func function name
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* @line line number
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* @node volume character device node
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* @byte data pattern to check
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*
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* This function returns %0 in case of success, and %-1 if in case of failure.
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*/
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int __update_vol_patt(libubi_t libubi, const char *test, const char *func,
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int line, const char *node, long long bytes, uint8_t byte)
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{
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int ret, fd;
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long long written = 0;
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unsigned char buf[512];
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fd = open(node, O_RDWR);
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if (fd == -1) {
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__failed(test, func, line, "open");
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__errorm(test, func, line, "cannot open \"%s\"\n", node);
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return -1;
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}
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if (ubi_update_start(libubi, fd, bytes)) {
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__failed(test, func, line, "ubi_update_start");
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__errorm(test, func, line, "bytes = %lld", bytes);
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goto close;
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}
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memset(buf, byte, 512);
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while (written != bytes) {
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ret = write(fd, buf, 512);
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if (ret == -1) {
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__failed(test, func, line, "write");
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__errorm(test, func, line, "written = %lld, ret = %d",
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written, ret);
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goto close;
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}
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written += ret;
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if (written > bytes) {
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__errorm(test, func, line, "update length %lld bytes, "
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"but %lld bytes are already written",
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bytes, written);
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goto close;
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}
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}
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close(fd);
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return 0;
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close:
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close(fd);
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return -1;
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}
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/**
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* seed_random_generator - randomly seed the standard pseudo-random generator.
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*
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* This helper function seeds the standard libc pseudo-random generator with a
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* more or less random value to make sure the 'rand()' call does not return the
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* same sequence every time UBI utilities run. Returns the random seed in case
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* of success and a %-1 in case of error.
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*/
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int seed_random_generator(void)
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{
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struct timeval tv;
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struct timezone tz;
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int seed;
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/*
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* Just assume that a combination of the PID + current time is a
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* reasonably random number.
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*/
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if (gettimeofday(&tv, &tz))
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return -1;
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seed = (unsigned int)tv.tv_sec;
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seed += (unsigned int)tv.tv_usec;
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seed *= getpid();
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seed %= INT_MAX;
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srand(seed);
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return seed;
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}
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