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The NAND Flash environment consists of several distinct components: - NAND framework (drivers harness for NAND controllers and NAND chips) - NAND simulator (NANDsim) - NAND file system (NAND FS) - Companion tools and utilities - Documentation (manual pages) This work is still experimental. Please use with caution. Obtained from: Semihalf Supported by: FreeBSD Foundation, Juniper Networks
1177 lines
28 KiB
C
1177 lines
28 KiB
C
/*-
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* Copyright (c) 2010-2012 Semihalf.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/fdcio.h>
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#include <sys/disk.h>
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#include <sys/disklabel.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/endian.h>
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#include <sys/stddef.h>
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#include <sys/uuid.h>
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#include <sys/dirent.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <libgeom.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <fs/nandfs/nandfs_fs.h>
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#include <dev/nand/nand_dev.h>
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#define DEBUG
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#undef DEBUG
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#ifdef DEBUG
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#define debug(fmt, args...) do { \
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printf("nandfs:" fmt "\n", ##args); } while (0)
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#else
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#define debug(fmt, args...)
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#endif
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#define NANDFS_FIRST_BLOCK nandfs_first_block()
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#define NANDFS_FIRST_CNO 1
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#define NANDFS_BLOCK_BAD 1
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#define NANDFS_BLOCK_GOOD 0
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struct file_info {
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uint64_t ino;
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const char *name;
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uint32_t mode;
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uint64_t size;
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uint8_t nblocks;
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uint32_t *blocks;
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struct nandfs_inode *inode;
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};
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struct file_info user_files[] =
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{
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{NANDFS_ROOT_INO, NULL, S_IFDIR | 0755, 0, 1, NULL, NULL},
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};
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struct file_info ifile = {NANDFS_IFILE_INO, NULL, 0, 0, -1, NULL, NULL};
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struct file_info sufile = {NANDFS_SUFILE_INO, NULL, 0, 0, -1, NULL, NULL};
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struct file_info cpfile = {NANDFS_CPFILE_INO, NULL, 0, 0, -1, NULL, NULL};
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struct file_info datfile = {NANDFS_DAT_INO, NULL, 0, 0, -1, NULL, NULL};
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struct nandfs_block {
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LIST_ENTRY(nandfs_block) block_link;
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uint32_t number;
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uint64_t offset;
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void *data;
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};
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static LIST_HEAD(, nandfs_block) block_head = LIST_HEAD_INITIALIZER(&block_head);
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/* Storage geometry */
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static off_t mediasize;
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static ssize_t sectorsize;
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static uint64_t nsegments;
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static uint64_t erasesize;
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static uint64_t segsize;
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struct nandfs_fsdata fsdata;
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struct nandfs_super_block super_block;
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static int is_nand;
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/* Nandfs parameters */
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static size_t blocksize = NANDFS_DEF_BLOCKSIZE;
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static long blocks_per_segment;
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static long rsv_segment_percent = 5;
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static time_t nandfs_time;
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static uint32_t bad_segments_count = 0;
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static uint32_t *bad_segments = NULL;
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static uint8_t fsdata_blocks_state[NANDFS_NFSAREAS];
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u_char *volumelabel = NULL;
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struct nandfs_super_root *sr;
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uint32_t nuserfiles;
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uint32_t seg_segsum_size;
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uint32_t seg_nblocks;
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uint32_t seg_endblock;
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#define SIZE_TO_BLOCK(size) (((size) + (blocksize - 1)) / blocksize)
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static uint32_t
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nandfs_first_block(void)
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{
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uint32_t i, first_free, start_bad_segments = 0;
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for (i = 0; i < bad_segments_count; i++) {
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if (i == bad_segments[i])
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start_bad_segments++;
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else
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break;
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}
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first_free = SIZE_TO_BLOCK(NANDFS_DATA_OFFSET_BYTES(erasesize) +
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(start_bad_segments * segsize));
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if (first_free < (uint32_t)blocks_per_segment)
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return (blocks_per_segment);
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else
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return (first_free);
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}
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: newfs_nandfs [ -options ] device\n"
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"where the options are:\n"
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"\t-b block-size\n"
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"\t-B blocks-per-segment\n"
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"\t-L volume label\n"
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"\t-m reserved-segments-percentage\n");
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exit(1);
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}
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static int
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nandfs_log2(unsigned n)
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{
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unsigned count;
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/*
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* N.B. this function will return 0 if supplied 0.
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*/
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for (count = 0; n/2; count++)
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n /= 2;
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return count;
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}
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/* from NetBSD's src/sys/net/if_ethersubr.c */
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static uint32_t
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crc32_le(uint32_t crc, const uint8_t *buf, size_t len)
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{
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static const uint32_t crctab[] = {
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0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
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0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
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0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
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0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c
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};
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size_t i;
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crc = crc ^ ~0U;
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for (i = 0; i < len; i++) {
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crc ^= buf[i];
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crc = (crc >> 4) ^ crctab[crc & 0xf];
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crc = (crc >> 4) ^ crctab[crc & 0xf];
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}
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return (crc ^ ~0U);
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}
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static void *
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get_block(uint32_t block_nr, uint64_t offset)
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{
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struct nandfs_block *block, *new_block;
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LIST_FOREACH(block, &block_head, block_link) {
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if (block->number == block_nr)
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return block->data;
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}
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debug("allocating block %x\n", block_nr);
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new_block = malloc(sizeof(*block));
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if (!new_block)
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err(1, "cannot allocate block");
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new_block->number = block_nr;
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new_block->offset = offset;
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new_block->data = malloc(blocksize);
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if (!new_block->data)
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err(1, "cannot allocate block data");
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memset(new_block->data, 0, blocksize);
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LIST_INSERT_HEAD(&block_head, new_block, block_link);
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return (new_block->data);
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}
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static int
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nandfs_seg_usage_blk_offset(uint64_t seg, uint64_t *blk, uint64_t *offset)
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{
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uint64_t off;
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uint16_t seg_size;
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seg_size = sizeof(struct nandfs_segment_usage);
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off = roundup(sizeof(struct nandfs_sufile_header), seg_size);
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off += (seg * seg_size);
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*blk = off / blocksize;
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*offset = (off % blocksize) / seg_size;
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return (0);
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}
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static uint32_t
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segment_size(void)
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{
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u_int size;
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size = sizeof(struct nandfs_segment_summary );
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size += seg_nblocks * sizeof(struct nandfs_binfo_v);
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if (size > blocksize)
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err(1, "segsum info bigger that blocksize");
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return (size);
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}
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static void
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prepare_blockgrouped_file(uint32_t block)
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{
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struct nandfs_block_group_desc *desc;
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uint32_t i, entries;
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desc = (struct nandfs_block_group_desc *)get_block(block, 0);
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entries = blocksize / sizeof(struct nandfs_block_group_desc);
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for (i = 0; i < entries; i++)
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desc[i].bg_nfrees = blocksize * 8;
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}
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static void
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alloc_blockgrouped_file(uint32_t block, uint32_t entry)
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{
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struct nandfs_block_group_desc *desc;
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uint32_t desc_nr;
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uint32_t *bitmap;
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desc = (struct nandfs_block_group_desc *)get_block(block, 0);
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bitmap = (uint32_t *)get_block(block + 1, 1);
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bitmap += (entry >> 5);
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if (*bitmap & (1 << (entry % 32))) {
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printf("nandfs: blockgrouped entry %d already allocated\n",
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entry);
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}
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*bitmap |= (1 << (entry % 32));
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desc_nr = entry / (blocksize * 8);
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desc[desc_nr].bg_nfrees--;
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}
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static uint64_t
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count_su_blocks(void)
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{
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uint64_t maxblk, blk, offset, i;
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maxblk = blk = 0;
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for (i = 0; i < bad_segments_count; i++) {
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nandfs_seg_usage_blk_offset(bad_segments[i], &blk, &offset);
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debug("bad segment at block:%jx off: %jx", blk, offset);
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if (blk > maxblk)
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maxblk = blk;
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}
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debug("bad segment needs %#jx", blk);
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if (blk >= NDADDR) {
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printf("nandfs: file too big (%jd > %d)\n", blk, NDADDR);
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exit(2);
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}
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sufile.size = (blk + 1) * blocksize;
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return (blk + 1);
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}
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static void
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count_seg_blocks(void)
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{
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uint32_t i;
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for (i = 0; i < nuserfiles; i++)
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if (user_files[i].nblocks) {
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seg_nblocks += user_files[i].nblocks;
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user_files[i].blocks = malloc(user_files[i].nblocks * sizeof(uint32_t));
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}
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ifile.nblocks = 2 +
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SIZE_TO_BLOCK(sizeof(struct nandfs_inode) * (NANDFS_USER_INO + 1));
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ifile.blocks = malloc(ifile.nblocks * sizeof(uint32_t));
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seg_nblocks += ifile.nblocks;
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cpfile.nblocks =
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SIZE_TO_BLOCK((NANDFS_CPFILE_FIRST_CHECKPOINT_OFFSET + 1) *
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sizeof(struct nandfs_checkpoint));
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cpfile.blocks = malloc(cpfile.nblocks * sizeof(uint32_t));
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seg_nblocks += cpfile.nblocks;
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if (!bad_segments) {
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sufile.nblocks =
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SIZE_TO_BLOCK((NANDFS_SUFILE_FIRST_SEGMENT_USAGE_OFFSET + 1) *
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sizeof(struct nandfs_segment_usage));
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} else {
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debug("bad blocks found: extra space for sufile");
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sufile.nblocks = count_su_blocks();
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}
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sufile.blocks = malloc(sufile.nblocks * sizeof(uint32_t));
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seg_nblocks += sufile.nblocks;
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datfile.nblocks = 2 +
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SIZE_TO_BLOCK((seg_nblocks) * sizeof(struct nandfs_dat_entry));
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datfile.blocks = malloc(datfile.nblocks * sizeof(uint32_t));
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seg_nblocks += datfile.nblocks;
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}
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static void
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assign_file_blocks(uint64_t start_block)
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{
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uint32_t i, j;
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for (i = 0; i < nuserfiles; i++)
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for (j = 0; j < user_files[i].nblocks; j++) {
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debug("user file %d at block %d at %#jx",
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i, j, (uintmax_t)start_block);
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user_files[i].blocks[j] = start_block++;
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}
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for (j = 0; j < ifile.nblocks; j++) {
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debug("ifile block %d at %#jx", j, (uintmax_t)start_block);
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ifile.blocks[j] = start_block++;
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}
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for (j = 0; j < cpfile.nblocks; j++) {
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debug("cpfile block %d at %#jx", j, (uintmax_t)start_block);
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cpfile.blocks[j] = start_block++;
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}
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for (j = 0; j < sufile.nblocks; j++) {
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debug("sufile block %d at %#jx", j, (uintmax_t)start_block);
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sufile.blocks[j] = start_block++;
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}
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for (j = 0; j < datfile.nblocks; j++) {
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debug("datfile block %d at %#jx", j, (uintmax_t)start_block);
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datfile.blocks[j] = start_block++;
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}
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/* add one for superroot */
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debug("sr at block %#jx", (uintmax_t)start_block);
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sr = (struct nandfs_super_root *)get_block(start_block++, 0);
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seg_endblock = start_block;
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}
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static void
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save_datfile(void)
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{
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prepare_blockgrouped_file(datfile.blocks[0]);
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}
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static uint64_t
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update_datfile(uint64_t block)
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{
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struct nandfs_dat_entry *dat;
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static uint64_t vblock = 0;
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uint64_t allocated, i, off;
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if (vblock == 0) {
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alloc_blockgrouped_file(datfile.blocks[0], vblock);
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vblock++;
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}
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allocated = vblock;
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i = vblock / (blocksize / sizeof(*dat));
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off = vblock % (blocksize / sizeof(*dat));
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vblock++;
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dat = (struct nandfs_dat_entry *)get_block(datfile.blocks[2 + i], 2 + i);
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alloc_blockgrouped_file(datfile.blocks[0], allocated);
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dat[off].de_blocknr = block;
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dat[off].de_start = NANDFS_FIRST_CNO;
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dat[off].de_end = UINTMAX_MAX;
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return (allocated);
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}
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static union nandfs_binfo *
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update_block_info(union nandfs_binfo *binfo, struct file_info *file)
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{
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nandfs_daddr_t vblock;
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uint32_t i;
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for (i = 0; i < file->nblocks; i++) {
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debug("%s: blk %x", __func__, i);
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if (file->ino != NANDFS_DAT_INO) {
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vblock = update_datfile(file->blocks[i]);
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binfo->bi_v.bi_vblocknr = vblock;
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binfo->bi_v.bi_blkoff = i;
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binfo->bi_v.bi_ino = file->ino;
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file->inode->i_db[i] = vblock;
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} else {
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binfo->bi_dat.bi_blkoff = i;
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binfo->bi_dat.bi_ino = file->ino;
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file->inode->i_db[i] = datfile.blocks[i];
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}
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binfo++;
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}
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return (binfo);
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}
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static void
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save_segsum(struct nandfs_segment_summary *ss)
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{
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union nandfs_binfo *binfo;
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struct nandfs_block *block;
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uint32_t sum_bytes, i;
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uint8_t crc_data, crc_skip;
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sum_bytes = segment_size();
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ss->ss_magic = NANDFS_SEGSUM_MAGIC;
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ss->ss_bytes = sizeof(struct nandfs_segment_summary);
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ss->ss_flags = NANDFS_SS_LOGBGN | NANDFS_SS_LOGEND | NANDFS_SS_SR;
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ss->ss_seq = 1;
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ss->ss_create = nandfs_time;
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ss->ss_next = nandfs_first_block() + blocks_per_segment;
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/* nblocks = segment blocks + segsum block + superroot */
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ss->ss_nblocks = seg_nblocks + 2;
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ss->ss_nbinfos = seg_nblocks;
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ss->ss_sumbytes = sum_bytes;
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crc_skip = sizeof(ss->ss_datasum) + sizeof(ss->ss_sumsum);
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ss->ss_sumsum = crc32_le(0, (uint8_t *)ss + crc_skip,
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sum_bytes - crc_skip);
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crc_data = 0;
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binfo = (union nandfs_binfo *)(ss + 1);
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for (i = 0; i < nuserfiles; i++) {
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if (user_files[i].nblocks)
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binfo = update_block_info(binfo, &user_files[i]);
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}
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binfo = update_block_info(binfo, &ifile);
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binfo = update_block_info(binfo, &cpfile);
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binfo = update_block_info(binfo, &sufile);
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update_block_info(binfo, &datfile);
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|
|
/* save superroot crc */
|
|
crc_skip = sizeof(sr->sr_sum);
|
|
sr->sr_sum = crc32_le(0, (uint8_t *)sr + crc_skip,
|
|
NANDFS_SR_BYTES - crc_skip);
|
|
|
|
/* segment checksup */
|
|
crc_skip = sizeof(ss->ss_datasum);
|
|
LIST_FOREACH(block, &block_head, block_link) {
|
|
if (block->number < NANDFS_FIRST_BLOCK)
|
|
continue;
|
|
if (block->number == NANDFS_FIRST_BLOCK)
|
|
crc_data = crc32_le(0,
|
|
(uint8_t *)block->data + crc_skip,
|
|
blocksize - crc_skip);
|
|
else
|
|
crc_data = crc32_le(crc_data, (uint8_t *)block->data,
|
|
blocksize);
|
|
}
|
|
ss->ss_datasum = crc_data;
|
|
}
|
|
|
|
static void
|
|
create_fsdata(void)
|
|
{
|
|
|
|
memset(&fsdata, 0, sizeof(struct nandfs_fsdata));
|
|
|
|
fsdata.f_magic = NANDFS_FSDATA_MAGIC;
|
|
fsdata.f_nsegments = nsegments;
|
|
fsdata.f_erasesize = erasesize;
|
|
fsdata.f_first_data_block = NANDFS_FIRST_BLOCK;
|
|
fsdata.f_blocks_per_segment = blocks_per_segment;
|
|
fsdata.f_r_segments_percentage = rsv_segment_percent;
|
|
fsdata.f_rev_level = NANDFS_CURRENT_REV;
|
|
fsdata.f_sbbytes = NANDFS_SB_BYTES;
|
|
fsdata.f_bytes = NANDFS_FSDATA_CRC_BYTES;
|
|
fsdata.f_ctime = nandfs_time;
|
|
fsdata.f_log_block_size = nandfs_log2(blocksize) - 10;
|
|
fsdata.f_errors = 1;
|
|
fsdata.f_inode_size = sizeof(struct nandfs_inode);
|
|
fsdata.f_dat_entry_size = sizeof(struct nandfs_dat_entry);
|
|
fsdata.f_checkpoint_size = sizeof(struct nandfs_checkpoint);
|
|
fsdata.f_segment_usage_size = sizeof(struct nandfs_segment_usage);
|
|
|
|
uuidgen(&fsdata.f_uuid, 1);
|
|
|
|
if (volumelabel)
|
|
memcpy(fsdata.f_volume_name, volumelabel, 16);
|
|
|
|
fsdata.f_sum = crc32_le(0, (const uint8_t *)&fsdata,
|
|
NANDFS_FSDATA_CRC_BYTES);
|
|
}
|
|
|
|
static void
|
|
save_fsdata(void *data)
|
|
{
|
|
|
|
memcpy(data, &fsdata, sizeof(fsdata));
|
|
}
|
|
|
|
static void
|
|
create_super_block(void)
|
|
{
|
|
|
|
memset(&super_block, 0, sizeof(struct nandfs_super_block));
|
|
|
|
super_block.s_magic = NANDFS_SUPER_MAGIC;
|
|
super_block.s_last_cno = NANDFS_FIRST_CNO;
|
|
super_block.s_last_pseg = NANDFS_FIRST_BLOCK;
|
|
super_block.s_last_seq = 1;
|
|
super_block.s_free_blocks_count =
|
|
(nsegments - bad_segments_count) * blocks_per_segment;
|
|
super_block.s_mtime = 0;
|
|
super_block.s_wtime = nandfs_time;
|
|
super_block.s_state = NANDFS_VALID_FS;
|
|
|
|
super_block.s_sum = crc32_le(0, (const uint8_t *)&super_block,
|
|
NANDFS_SB_BYTES);
|
|
}
|
|
|
|
static void
|
|
save_super_block(void *data)
|
|
{
|
|
|
|
memcpy(data, &super_block, sizeof(super_block));
|
|
}
|
|
|
|
static void
|
|
save_super_root(void)
|
|
{
|
|
|
|
sr->sr_bytes = NANDFS_SR_BYTES;
|
|
sr->sr_flags = 0;
|
|
sr->sr_nongc_ctime = nandfs_time;
|
|
datfile.inode = &sr->sr_dat;
|
|
cpfile.inode = &sr->sr_cpfile;
|
|
sufile.inode = &sr->sr_sufile;
|
|
}
|
|
|
|
static struct nandfs_dir_entry *
|
|
add_de(void *block, struct nandfs_dir_entry *de, uint64_t ino,
|
|
const char *name, uint8_t type)
|
|
{
|
|
uint16_t reclen;
|
|
|
|
/* modify last de */
|
|
de->rec_len = NANDFS_DIR_REC_LEN(de->name_len);
|
|
de = (void *)((uint8_t *)de + de->rec_len);
|
|
|
|
reclen = blocksize - ((uintptr_t)de - (uintptr_t)block);
|
|
if (reclen < NANDFS_DIR_REC_LEN(strlen(name))) {
|
|
printf("nandfs: too many dir entries for one block\n");
|
|
return (NULL);
|
|
}
|
|
|
|
de->inode = ino;
|
|
de->rec_len = reclen;
|
|
de->name_len = strlen(name);
|
|
de->file_type = type;
|
|
memset(de->name, 0,
|
|
(strlen(name) + NANDFS_DIR_PAD - 1) & ~NANDFS_DIR_ROUND);
|
|
memcpy(de->name, name, strlen(name));
|
|
|
|
return (de);
|
|
}
|
|
|
|
static struct nandfs_dir_entry *
|
|
make_dir(void *block, uint64_t ino, uint64_t parent_ino)
|
|
{
|
|
struct nandfs_dir_entry *de = (struct nandfs_dir_entry *)block;
|
|
|
|
/* create '..' entry */
|
|
de->inode = parent_ino;
|
|
de->rec_len = NANDFS_DIR_REC_LEN(2);
|
|
de->name_len = 2;
|
|
de->file_type = DT_DIR;
|
|
memset(de->name, 0, NANDFS_DIR_NAME_LEN(2));
|
|
memcpy(de->name, "..", 2);
|
|
|
|
/* create '.' entry */
|
|
de = (void *)((uint8_t *)block + NANDFS_DIR_REC_LEN(2));
|
|
de->inode = ino;
|
|
de->rec_len = blocksize - NANDFS_DIR_REC_LEN(2);
|
|
de->name_len = 1;
|
|
de->file_type = DT_DIR;
|
|
memset(de->name, 0, NANDFS_DIR_NAME_LEN(1));
|
|
memcpy(de->name, ".", 1);
|
|
|
|
return (de);
|
|
}
|
|
|
|
static void
|
|
save_root_dir(void)
|
|
{
|
|
struct file_info *root = &user_files[0];
|
|
struct nandfs_dir_entry *de;
|
|
uint32_t i;
|
|
void *block;
|
|
|
|
block = get_block(root->blocks[0], 0);
|
|
|
|
de = make_dir(block, root->ino, root->ino);
|
|
for (i = 1; i < nuserfiles; i++)
|
|
de = add_de(block, de, user_files[i].ino, user_files[i].name,
|
|
IFTODT(user_files[i].mode));
|
|
|
|
root->size = ((uintptr_t)de - (uintptr_t)block) +
|
|
NANDFS_DIR_REC_LEN(de->name_len);
|
|
}
|
|
|
|
static void
|
|
save_sufile(void)
|
|
{
|
|
struct nandfs_sufile_header *header;
|
|
struct nandfs_segment_usage *su;
|
|
uint64_t blk, i, off;
|
|
void *block;
|
|
int start;
|
|
|
|
/*
|
|
* At the beginning just zero-out everything
|
|
*/
|
|
for (i = 0; i < sufile.nblocks; i++)
|
|
get_block(sufile.blocks[i], 0);
|
|
|
|
start = 0;
|
|
|
|
block = get_block(sufile.blocks[start], 0);
|
|
header = (struct nandfs_sufile_header *)block;
|
|
header->sh_ncleansegs = nsegments - bad_segments_count - 1;
|
|
header->sh_ndirtysegs = 1;
|
|
header->sh_last_alloc = 1;
|
|
|
|
su = (struct nandfs_segment_usage *)header;
|
|
off = NANDFS_SUFILE_FIRST_SEGMENT_USAGE_OFFSET;
|
|
/* Allocate data segment */
|
|
su[off].su_lastmod = nandfs_time;
|
|
/* nblocks = segment blocks + segsum block + superroot */
|
|
su[off].su_nblocks = seg_nblocks + 2;
|
|
su[off].su_flags = NANDFS_SEGMENT_USAGE_DIRTY;
|
|
off++;
|
|
/* Allocate next segment */
|
|
su[off].su_lastmod = nandfs_time;
|
|
su[off].su_nblocks = 0;
|
|
su[off].su_flags = NANDFS_SEGMENT_USAGE_DIRTY;
|
|
for (i = 0; i < bad_segments_count; i++) {
|
|
nandfs_seg_usage_blk_offset(bad_segments[i], &blk, &off);
|
|
debug("storing bad_segments[%jd]=%x at %jx off %jx\n", i,
|
|
bad_segments[i], blk, off);
|
|
block = get_block(sufile.blocks[blk],
|
|
off * sizeof(struct nandfs_segment_usage *));
|
|
su = (struct nandfs_segment_usage *)block;
|
|
su[off].su_lastmod = nandfs_time;
|
|
su[off].su_nblocks = 0;
|
|
su[off].su_flags = NANDFS_SEGMENT_USAGE_ERROR;
|
|
}
|
|
}
|
|
|
|
static void
|
|
save_cpfile(void)
|
|
{
|
|
struct nandfs_cpfile_header *header;
|
|
struct nandfs_checkpoint *cp, *initial_cp;
|
|
int i, entries = blocksize / sizeof(struct nandfs_checkpoint);
|
|
uint64_t cno;
|
|
|
|
header = (struct nandfs_cpfile_header *)get_block(cpfile.blocks[0], 0);
|
|
header->ch_ncheckpoints = 1;
|
|
header->ch_nsnapshots = 0;
|
|
|
|
cp = (struct nandfs_checkpoint *)header;
|
|
|
|
/* fill first checkpoint data*/
|
|
initial_cp = &cp[NANDFS_CPFILE_FIRST_CHECKPOINT_OFFSET];
|
|
initial_cp->cp_flags = 0;
|
|
initial_cp->cp_checkpoints_count = 0;
|
|
initial_cp->cp_cno = NANDFS_FIRST_CNO;
|
|
initial_cp->cp_create = nandfs_time;
|
|
initial_cp->cp_nblk_inc = seg_endblock - 1;
|
|
initial_cp->cp_blocks_count = seg_nblocks;
|
|
memset(&initial_cp->cp_snapshot_list, 0,
|
|
sizeof(struct nandfs_snapshot_list));
|
|
|
|
ifile.inode = &initial_cp->cp_ifile_inode;
|
|
|
|
/* mark rest of cp as invalid */
|
|
cno = NANDFS_FIRST_CNO + 1;
|
|
i = NANDFS_CPFILE_FIRST_CHECKPOINT_OFFSET + 1;
|
|
for (; i < entries; i++) {
|
|
cp[i].cp_cno = cno++;
|
|
cp[i].cp_flags = NANDFS_CHECKPOINT_INVALID;
|
|
}
|
|
}
|
|
|
|
static void
|
|
init_inode(struct nandfs_inode *inode, struct file_info *file)
|
|
{
|
|
|
|
inode->i_blocks = file->nblocks;
|
|
inode->i_ctime = nandfs_time;
|
|
inode->i_mtime = nandfs_time;
|
|
inode->i_mode = file->mode & 0xffff;
|
|
inode->i_links_count = 1;
|
|
|
|
if (file->size > 0)
|
|
inode->i_size = file->size;
|
|
else
|
|
inode->i_size = 0;
|
|
|
|
if (file->ino == NANDFS_USER_INO)
|
|
inode->i_flags = SF_NOUNLINK|UF_NOUNLINK;
|
|
else
|
|
inode->i_flags = 0;
|
|
}
|
|
|
|
static void
|
|
save_ifile(void)
|
|
{
|
|
struct nandfs_inode *inode;
|
|
struct file_info *file;
|
|
uint64_t ino, blk, off;
|
|
uint32_t i;
|
|
|
|
prepare_blockgrouped_file(ifile.blocks[0]);
|
|
for (i = 0; i <= NANDFS_USER_INO; i++)
|
|
alloc_blockgrouped_file(ifile.blocks[0], i);
|
|
|
|
for (i = 0; i < nuserfiles; i++) {
|
|
file = &user_files[i];
|
|
ino = file->ino;
|
|
blk = ino / (blocksize / sizeof(*inode));
|
|
off = ino % (blocksize / sizeof(*inode));
|
|
inode =
|
|
(struct nandfs_inode *)get_block(ifile.blocks[2 + blk], 2 + blk);
|
|
file->inode = &inode[off];
|
|
init_inode(file->inode, file);
|
|
}
|
|
|
|
init_inode(ifile.inode, &ifile);
|
|
init_inode(cpfile.inode, &cpfile);
|
|
init_inode(sufile.inode, &sufile);
|
|
init_inode(datfile.inode, &datfile);
|
|
}
|
|
|
|
static int
|
|
create_fs(void)
|
|
{
|
|
uint64_t start_block;
|
|
uint32_t segsum_size;
|
|
char *data;
|
|
int i;
|
|
|
|
nuserfiles = (sizeof(user_files) / sizeof(user_files[0]));
|
|
|
|
/* Count and assign blocks */
|
|
count_seg_blocks();
|
|
segsum_size = segment_size();
|
|
start_block = NANDFS_FIRST_BLOCK + SIZE_TO_BLOCK(segsum_size);
|
|
assign_file_blocks(start_block);
|
|
|
|
/* Create super root structure */
|
|
save_super_root();
|
|
|
|
/* Create root directory */
|
|
save_root_dir();
|
|
|
|
/* Fill in file contents */
|
|
save_sufile();
|
|
save_cpfile();
|
|
save_ifile();
|
|
save_datfile();
|
|
|
|
/* Save fsdata and superblocks */
|
|
create_fsdata();
|
|
create_super_block();
|
|
|
|
for (i = 0; i < NANDFS_NFSAREAS; i++) {
|
|
if (fsdata_blocks_state[i] != NANDFS_BLOCK_GOOD)
|
|
continue;
|
|
|
|
data = get_block((i * erasesize)/blocksize, 0);
|
|
save_fsdata(data);
|
|
|
|
data = get_block((i * erasesize + NANDFS_SBLOCK_OFFSET_BYTES) /
|
|
blocksize, 0);
|
|
if (blocksize > NANDFS_SBLOCK_OFFSET_BYTES)
|
|
data += NANDFS_SBLOCK_OFFSET_BYTES;
|
|
save_super_block(data);
|
|
memset(data + sizeof(struct nandfs_super_block), 0xff,
|
|
(blocksize - sizeof(struct nandfs_super_block) -
|
|
NANDFS_SBLOCK_OFFSET_BYTES));
|
|
}
|
|
|
|
/* Save segment summary and CRCs */
|
|
save_segsum(get_block(NANDFS_FIRST_BLOCK, 0));
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
write_fs(int fda)
|
|
{
|
|
struct nandfs_block *block;
|
|
char *data;
|
|
u_int ret;
|
|
|
|
/* Overwrite next block with ff if not nand device */
|
|
if (!is_nand) {
|
|
data = get_block(seg_endblock, 0);
|
|
memset(data, 0xff, blocksize);
|
|
}
|
|
|
|
LIST_FOREACH(block, &block_head, block_link) {
|
|
lseek(fda, block->number * blocksize, SEEK_SET);
|
|
ret = write(fda, block->data, blocksize);
|
|
if (ret != blocksize)
|
|
err(1, "cannot write filesystem data");
|
|
}
|
|
}
|
|
|
|
static void
|
|
check_parameters(void)
|
|
{
|
|
int i;
|
|
|
|
/* check blocksize */
|
|
if ((blocksize < NANDFS_MIN_BLOCKSIZE) || (blocksize > MAXBSIZE) ||
|
|
((blocksize - 1) & blocksize)) {
|
|
errx(1, "Bad blocksize (%zu). Must be in range [%u-%u] "
|
|
"and a power of two.", blocksize, NANDFS_MIN_BLOCKSIZE,
|
|
MAXBSIZE);
|
|
}
|
|
|
|
/* check blocks per segments */
|
|
if ((blocks_per_segment < NANDFS_SEG_MIN_BLOCKS) ||
|
|
((blocksize - 1) & blocksize))
|
|
errx(1, "Bad blocks per segment (%lu). Must be greater than "
|
|
"%u and a power of two.", blocks_per_segment,
|
|
NANDFS_SEG_MIN_BLOCKS);
|
|
|
|
/* check reserved segment percentage */
|
|
if ((rsv_segment_percent < 1) && (rsv_segment_percent > 99))
|
|
errx(1, "Bad reserved segment percentage. "
|
|
"Must in range 1..99.");
|
|
|
|
/* check volume label */
|
|
i = 0;
|
|
if (volumelabel) {
|
|
while (isalnum(volumelabel[++i]))
|
|
;
|
|
|
|
if (volumelabel[i] != '\0') {
|
|
errx(1, "bad volume label. "
|
|
"Valid characters are alphanumerics.");
|
|
}
|
|
|
|
if (strlen(volumelabel) >= 16)
|
|
errx(1, "Bad volume label. Length is longer than %d.",
|
|
16);
|
|
}
|
|
|
|
nandfs_time = time(NULL);
|
|
}
|
|
|
|
static void
|
|
print_parameters(void)
|
|
{
|
|
|
|
printf("filesystem parameters:\n");
|
|
printf("blocksize: %#zx sectorsize: %#zx\n", blocksize, sectorsize);
|
|
printf("erasesize: %#jx mediasize: %#jx\n", erasesize, mediasize);
|
|
printf("segment size: %#jx blocks per segment: %#x\n", segsize,
|
|
(uint32_t)blocks_per_segment);
|
|
}
|
|
|
|
/*
|
|
* Exit with error if file system is mounted.
|
|
*/
|
|
static void
|
|
check_mounted(const char *fname, mode_t mode)
|
|
{
|
|
struct statfs *mp;
|
|
const char *s1, *s2;
|
|
size_t len;
|
|
int n, r;
|
|
|
|
if (!(n = getmntinfo(&mp, MNT_NOWAIT)))
|
|
err(1, "getmntinfo");
|
|
|
|
len = strlen(_PATH_DEV);
|
|
s1 = fname;
|
|
if (!strncmp(s1, _PATH_DEV, len))
|
|
s1 += len;
|
|
|
|
r = S_ISCHR(mode) && s1 != fname && *s1 == 'r';
|
|
|
|
for (; n--; mp++) {
|
|
s2 = mp->f_mntfromname;
|
|
|
|
if (!strncmp(s2, _PATH_DEV, len))
|
|
s2 += len;
|
|
if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) ||
|
|
!strcmp(s1, s2))
|
|
errx(1, "%s is mounted on %s", fname, mp->f_mntonname);
|
|
}
|
|
}
|
|
|
|
static void
|
|
calculate_geometry(int fd)
|
|
{
|
|
struct chip_param_io chip_params;
|
|
char ident[DISK_IDENT_SIZE];
|
|
char medianame[MAXPATHLEN];
|
|
|
|
/* Check storage type */
|
|
g_get_ident(fd, ident, DISK_IDENT_SIZE);
|
|
g_get_name(ident, medianame, MAXPATHLEN);
|
|
debug("device name: %s", medianame);
|
|
|
|
is_nand = (strstr(medianame, "gnand") != NULL);
|
|
debug("is_nand = %d", is_nand);
|
|
|
|
sectorsize = g_sectorsize(fd);
|
|
debug("sectorsize: %#zx", sectorsize);
|
|
|
|
/* Get storage size */
|
|
mediasize = g_mediasize(fd);
|
|
debug("mediasize: %#jx", mediasize);
|
|
|
|
/* Get storage erase unit size */
|
|
if (!is_nand)
|
|
erasesize = NANDFS_DEF_ERASESIZE;
|
|
else if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1)
|
|
errx(1, "Cannot ioctl(NAND_IO_GET_CHIP_PARAM)");
|
|
else
|
|
erasesize = chip_params.page_size * chip_params.pages_per_block;
|
|
|
|
debug("erasesize: %#jx", (uintmax_t)erasesize);
|
|
|
|
if (blocks_per_segment == 0) {
|
|
if (erasesize >= NANDFS_MIN_SEGSIZE)
|
|
blocks_per_segment = erasesize / blocksize;
|
|
else
|
|
blocks_per_segment = NANDFS_MIN_SEGSIZE / blocksize;
|
|
}
|
|
|
|
/* Calculate number of segments */
|
|
segsize = blocksize * blocks_per_segment;
|
|
nsegments = ((mediasize - NANDFS_NFSAREAS * erasesize) / segsize) - 2;
|
|
debug("segsize: %#jx", segsize);
|
|
debug("nsegments: %#jx", nsegments);
|
|
}
|
|
|
|
static void
|
|
erase_device(int fd)
|
|
{
|
|
int rest, failed;
|
|
uint64_t i, nblocks;
|
|
off_t offset;
|
|
|
|
failed = 0;
|
|
for (i = 0; i < NANDFS_NFSAREAS; i++) {
|
|
debug("Deleting %jx\n", i * erasesize);
|
|
if (g_delete(fd, i * erasesize, erasesize)) {
|
|
printf("cannot delete %jx\n", i * erasesize);
|
|
fsdata_blocks_state[i] = NANDFS_BLOCK_BAD;
|
|
failed++;
|
|
} else
|
|
fsdata_blocks_state[i] = NANDFS_BLOCK_GOOD;
|
|
}
|
|
|
|
if (failed == NANDFS_NFSAREAS) {
|
|
printf("%d first blocks not usable. Unable to create "
|
|
"filesystem.\n", failed);
|
|
exit(1);
|
|
}
|
|
|
|
for (i = 0; i < nsegments; i++) {
|
|
offset = NANDFS_NFSAREAS * erasesize + i * segsize;
|
|
if (g_delete(fd, offset, segsize)) {
|
|
printf("cannot delete segment %jx (offset %jd)\n",
|
|
i, offset);
|
|
bad_segments_count++;
|
|
bad_segments = realloc(bad_segments,
|
|
bad_segments_count * sizeof(uint32_t));
|
|
bad_segments[bad_segments_count - 1] = i;
|
|
}
|
|
}
|
|
|
|
if (bad_segments_count == nsegments) {
|
|
printf("no valid segments\n");
|
|
exit(1);
|
|
}
|
|
|
|
/* Delete remaining blocks at the end of device */
|
|
rest = mediasize % segsize;
|
|
nblocks = rest / erasesize;
|
|
for (i = 0; i < nblocks; i++) {
|
|
offset = (segsize * nsegments) + (i * erasesize);
|
|
if (g_delete(fd, offset, erasesize)) {
|
|
printf("cannot delete space after last segment "
|
|
"- probably a bad block\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
erase_initial(int fd)
|
|
{
|
|
char buf[512];
|
|
u_int i;
|
|
|
|
memset(buf, 0xff, sizeof(buf));
|
|
|
|
lseek(fd, 0, SEEK_SET);
|
|
for (i = 0; i < NANDFS_NFSAREAS * erasesize; i += sizeof(buf))
|
|
write(fd, buf, sizeof(buf));
|
|
}
|
|
|
|
static void
|
|
create_nandfs(int fd)
|
|
{
|
|
|
|
create_fs();
|
|
|
|
write_fs(fd);
|
|
}
|
|
|
|
static void
|
|
print_summary(void)
|
|
{
|
|
|
|
printf("filesystem created succesfully\n");
|
|
printf("total segments: %#jx valid segments: %#jx\n", nsegments,
|
|
nsegments - bad_segments_count);
|
|
printf("total space: %ju MB free: %ju MB\n",
|
|
(nsegments *
|
|
blocks_per_segment * blocksize) / (1024 * 1024),
|
|
((nsegments - bad_segments_count) *
|
|
blocks_per_segment * blocksize) / (1024 * 1024));
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct stat sb;
|
|
char buf[MAXPATHLEN];
|
|
const char opts[] = "b:B:L:m:";
|
|
const char *fname;
|
|
int ch, fd;
|
|
|
|
while ((ch = getopt(argc, argv, opts)) != -1) {
|
|
switch (ch) {
|
|
case 'b':
|
|
blocksize = strtol(optarg, (char **)NULL, 10);
|
|
if (blocksize == 0)
|
|
usage();
|
|
break;
|
|
case 'B':
|
|
blocks_per_segment = strtol(optarg, (char **)NULL, 10);
|
|
if (blocks_per_segment == 0)
|
|
usage();
|
|
break;
|
|
case 'L':
|
|
volumelabel = optarg;
|
|
break;
|
|
case 'm':
|
|
rsv_segment_percent = strtol(optarg, (char **)NULL, 10);
|
|
if (rsv_segment_percent == 0)
|
|
usage();
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc < 1 || argc > 2)
|
|
usage();
|
|
|
|
/* construct proper device path */
|
|
fname = *argv++;
|
|
if (!strchr(fname, '/')) {
|
|
snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname);
|
|
if (!(fname = strdup(buf)))
|
|
err(1, NULL);
|
|
}
|
|
|
|
fd = g_open(fname, 1);
|
|
if (fd == -1)
|
|
err(1, "Cannot open %s", fname);
|
|
|
|
if (fstat(fd, &sb) == -1)
|
|
err(1, "Cannot stat %s", fname);
|
|
if (!S_ISCHR(sb.st_mode))
|
|
warnx("%s is not a character device", fname);
|
|
|
|
check_mounted(fname, sb.st_mode);
|
|
|
|
calculate_geometry(fd);
|
|
|
|
check_parameters();
|
|
|
|
print_parameters();
|
|
|
|
if (is_nand)
|
|
erase_device(fd);
|
|
else
|
|
erase_initial(fd);
|
|
|
|
create_nandfs(fd);
|
|
|
|
print_summary();
|
|
|
|
g_close(fd);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|