390 lines
8.4 KiB
C
390 lines
8.4 KiB
C
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/*
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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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* Test UBI volume read.
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*/
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#include <stdio.h>
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#include <stdlib.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 <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "libubi.h"
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#define PROGRAM_NAME "io_basic"
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#include "common.h"
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#include "helpers.h"
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static libubi_t libubi;
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static struct ubi_dev_info dev_info;
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const char *node;
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static int fd;
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/* Data lengthes to test, @io - minimal I/O unit size, @s - eraseblock size */
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#define LENGTHES(io, s) \
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{1, (io), (io)+1, 2*(io), 3*(io)-1, 3*(io), \
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PAGE_SIZE-1, PAGE_SIZE-(io), 2*PAGE_SIZE, 2*PAGE_SIZE-(io), \
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(s)/2-1, (s)/2, (s)/2+1, (s)-1, (s), (s)+1, 2*(s)-(io), 2*(s), \
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2*(s)+(io), 3*(s), 3*(s)+(io)};
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/*
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* Offsets to test, @io - minimal I/O unit size, @s - eraseblock size, @sz -
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* volume size.
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*/
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#define OFFSETS(io, s, sz) \
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{0, (io)-1, (io), (io)+1, 2*(io)-1, 2*(io), 3*(io)-1, 3*(io), \
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PAGE_SIZE-1, PAGE_SIZE-(io), 2*PAGE_SIZE, 2*PAGE_SIZE-(io), \
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(s)/2-1, (s)/2, (s)/2+1, (s)-1, (s), (s)+1, 2*(s)-(io), 2*(s), \
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2*(s)+(io), 3*(s), (sz)-(s)-1, (sz)-(io)-1, (sz)-PAGE_SIZE-1};
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/**
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* test_static - test static volume-specific features.
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*
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* Thus function returns %0 in case of success and %-1 in case of failure.
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*/
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static int test_static(void)
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{
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struct ubi_mkvol_request req;
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const char *name = PROGRAM_NAME ":io_basic()";
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char vol_node[strlen(UBI_VOLUME_PATTERN) + 100];
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struct ubi_vol_info vol_info;
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int fd, ret;
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char buf[20];
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req.vol_id = UBI_VOL_NUM_AUTO;
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req.alignment = 1;
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req.bytes = dev_info.avail_bytes;
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req.vol_type = UBI_STATIC_VOLUME;
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req.name = name;
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if (ubi_mkvol(libubi, node, &req)) {
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failed("ubi_mkvol");
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return -1;
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}
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sprintf(vol_node, UBI_VOLUME_PATTERN, dev_info.dev_num, req.vol_id);
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fd = open(vol_node, O_RDWR);
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if (fd == -1) {
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failed("open");
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errorm("cannot open \"%s\"\n", node);
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goto remove;
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}
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if (ubi_get_vol_info(libubi, vol_node, &vol_info)) {
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failed("ubi_get_vol_info");
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goto close;
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}
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/* Make sure new static volume contains no data */
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if (vol_info.data_bytes != 0) {
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errorm("data_bytes = %lld, not zero", vol_info.data_bytes);
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goto close;
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}
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/* Ensure read returns EOF */
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ret = read(fd, buf, 1);
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if (ret < 0) {
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failed("read");
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goto close;
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}
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if (ret != 0) {
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errorm("read data from free static volume");
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goto close;
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}
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if (ubi_update_start(libubi, fd, 10)) {
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failed("ubi_update_start");
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goto close;
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}
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ret = write(fd, buf, 10);
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if (ret < 0) {
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failed("write");
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goto close;
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}
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if (ret != 10) {
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errorm("written %d bytes", ret);
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goto close;
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}
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if (lseek(fd, 0, SEEK_SET) != 0) {
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failed("seek");
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goto close;
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}
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ret = read(fd, buf, 20);
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if (ret < 0) {
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failed("read");
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goto close;
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}
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if (ret != 10) {
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errorm("read %d bytes", ret);
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goto close;
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}
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close(fd);
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if (ubi_rmvol(libubi, node, req.vol_id)) {
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failed("ubi_rmvol");
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return -1;
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}
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return 0;
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close:
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close(fd);
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remove:
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ubi_rmvol(libubi, node, req.vol_id);
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return -1;
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}
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/*
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* A helper function for test_read2().
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*/
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static int test_read3(const struct ubi_vol_info *vol_info, int len, off_t off)
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{
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int i, len1;
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unsigned char ck_buf[len], buf[len];
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off_t new_off;
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if (off + len > vol_info->data_bytes)
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len1 = vol_info->data_bytes - off;
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else
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len1 = len;
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if (lseek(fd, off, SEEK_SET) != off) {
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failed("seek");
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errorm("len = %d", len);
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return -1;
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}
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if (read(fd, buf, len) != len1) {
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failed("read");
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errorm("len = %d", len);
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return -1;
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}
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new_off = lseek(fd, 0, SEEK_CUR);
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if (new_off != off + len1) {
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if (new_off == -1)
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failed("lseek");
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else
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errorm("read %d bytes from %lld, but resulting "
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"offset is %lld", len1, (long long) off, (long long) new_off);
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return -1;
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}
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for (i = 0; i < len1; i++)
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ck_buf[i] = (unsigned char)(off + i);
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if (memcmp(buf, ck_buf, len1)) {
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errorm("incorrect data read from offset %lld",
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(long long)off);
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errorm("len = %d", len);
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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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* A helper function for test_read1().
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*/
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static int test_read2(const struct ubi_vol_info *vol_info, int len)
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{
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int i;
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off_t offsets[] = OFFSETS(dev_info.min_io_size, vol_info->leb_size,
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vol_info->data_bytes);
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for (i = 0; i < sizeof(offsets)/sizeof(off_t); i++) {
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if (test_read3(vol_info, len, offsets[i])) {
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errorm("offset = %d", offsets[i]);
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return -1;
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}
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}
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return 0;
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}
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/*
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* A helper function for test_read().
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*/
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static int test_read1(struct ubi_vol_info *vol_info)
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{
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int i, written = 0;
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char vol_node[strlen(UBI_VOLUME_PATTERN) + 100];
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int lengthes[] = LENGTHES(dev_info.min_io_size, vol_info->leb_size);
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sprintf(vol_node, UBI_VOLUME_PATTERN, dev_info.dev_num,
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vol_info->vol_id);
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fd = open(vol_node, O_RDWR);
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if (fd == -1) {
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failed("open");
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errorm("cannot open \"%s\"\n", node);
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return -1;
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}
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/* Write some pattern to the volume */
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if (ubi_update_start(libubi, fd, vol_info->rsvd_bytes)) {
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failed("ubi_update_start");
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errorm("bytes = %lld", vol_info->rsvd_bytes);
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goto close;
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}
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while (written < vol_info->rsvd_bytes) {
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int i, ret;
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unsigned char buf[512];
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for (i = 0; i < 512; i++)
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buf[i] = (unsigned char)(written + i);
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ret = write(fd, buf, 512);
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if (ret == -1) {
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failed("write");
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errorm("written = %d, ret = %d", written, ret);
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goto close;
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}
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written += ret;
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}
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close(fd);
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if (ubi_get_vol_info(libubi, vol_node, vol_info)) {
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failed("ubi_get_vol_info");
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return -1;
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}
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fd = open(vol_node, O_RDONLY);
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if (fd == -1) {
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failed("open");
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errorm("cannot open \"%s\"\n", node);
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return -1;
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}
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for (i = 0; i < sizeof(lengthes)/sizeof(int); i++) {
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if (test_read2(vol_info, lengthes[i])) {
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errorm("length = %d", lengthes[i]);
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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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* test_read - test UBI volume reading from different offsets.
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*
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* @type volume type (%UBI_DYNAMIC_VOLUME or %UBI_STATIC_VOLUME)
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*
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* Thus function returns %0 in case of success and %-1 in case of failure.
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*/
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static int test_read(int type)
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{
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const char *name = PROGRAM_NAME ":test_read()";
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int alignments[] = ALIGNMENTS(dev_info.leb_size);
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char vol_node[strlen(UBI_VOLUME_PATTERN) + 100];
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struct ubi_mkvol_request req;
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int i;
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for (i = 0; i < sizeof(alignments)/sizeof(int); i++) {
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int leb_size;
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struct ubi_vol_info vol_info;
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req.vol_id = UBI_VOL_NUM_AUTO;
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req.vol_type = type;
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req.name = name;
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req.alignment = alignments[i];
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req.alignment -= req.alignment % dev_info.min_io_size;
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if (req.alignment == 0)
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req.alignment = dev_info.min_io_size;
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leb_size = dev_info.leb_size - dev_info.leb_size % req.alignment;
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req.bytes = MIN_AVAIL_EBS * leb_size;
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if (ubi_mkvol(libubi, node, &req)) {
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failed("ubi_mkvol");
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return -1;
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}
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sprintf(vol_node, UBI_VOLUME_PATTERN, dev_info.dev_num,
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req.vol_id);
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if (ubi_get_vol_info(libubi, vol_node, &vol_info)) {
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failed("ubi_get_vol_info");
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goto remove;
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}
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if (test_read1(&vol_info)) {
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errorm("alignment = %d", req.alignment);
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goto remove;
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}
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if (ubi_rmvol(libubi, node, req.vol_id)) {
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failed("ubi_rmvol");
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return -1;
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}
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}
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return 0;
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remove:
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ubi_rmvol(libubi, node, req.vol_id);
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return -1;
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}
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int main(int argc, char * const argv[])
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{
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if (initial_check(argc, argv))
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return 1;
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node = argv[1];
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libubi = libubi_open();
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if (libubi == NULL) {
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failed("libubi_open");
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return 1;
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}
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if (ubi_get_dev_info(libubi, node, &dev_info)) {
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failed("ubi_get_dev_info");
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goto close;
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}
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if (test_static())
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goto close;
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if (test_read(UBI_DYNAMIC_VOLUME))
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goto close;
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if (test_read(UBI_STATIC_VOLUME))
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goto close;
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libubi_close(libubi);
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return 0;
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|
|
|
||
|
|
close:
|
||
|
|
libubi_close(libubi);
|
||
|
|
return 1;
|
||
|
|
}
|