[a9fa9b7] | 1 | /* |
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| 2 | * COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org> |
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| 3 | * |
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| 4 | * The license and distribution terms for this file may be |
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| 5 | * found in the file LICENSE in this distribution or at |
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| 6 | * http://www.rtems.com/license/LICENSE. |
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| 7 | * |
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| 8 | * $Id$ |
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| 9 | */ |
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| 10 | /** |
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| 11 | * @file |
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| 12 | * |
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| 13 | * @ingroup rtems-rfs |
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| 14 | * |
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| 15 | * RTEMS File Systems Format |
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| 16 | * |
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| 17 | * Format the file system ready for use. |
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| 18 | */ |
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| 19 | |
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[355b0544] | 20 | #if HAVE_CONFIG_H |
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| 21 | #include "config.h" |
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| 22 | #endif |
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| 23 | |
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[a9fa9b7] | 24 | #include <stdlib.h> |
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| 25 | #include <stdio.h> |
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| 26 | |
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| 27 | #include <rtems/rfs/rtems-rfs-data.h> |
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| 28 | #include <rtems/rfs/rtems-rfs-file-system.h> |
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| 29 | #include <rtems/rfs/rtems-rfs-inode.h> |
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| 30 | #include <rtems/rtems-rfs-format.h> |
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| 31 | #include <rtems/rfs/rtems-rfs-dir.h> |
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| 32 | |
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| 33 | /** |
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| 34 | * Return the number of gigabytes. |
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| 35 | */ |
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[1d539c0] | 36 | #define GIGS(_g) (((uint64_t)(_g)) * 1024 * 1024) |
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[a9fa9b7] | 37 | |
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| 38 | /** |
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| 39 | * Return the number of bits that fit in the block size. |
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| 40 | */ |
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| 41 | static int |
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| 42 | rtems_rfs_bits_per_block (rtems_rfs_file_system* fs) |
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| 43 | { |
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| 44 | return rtems_rfs_bitmap_numof_bits (rtems_rfs_fs_block_size (fs)); |
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| 45 | } |
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| 46 | |
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| 47 | /** |
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| 48 | * Return a rounded up integer quotient given a dividend and divisor. That is: |
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| 49 | * "quotient = dividend / divisor" |
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| 50 | */ |
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| 51 | int |
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| 52 | rtems_rfs_rup_quotient (uint32_t dividend, uint32_t divisor) |
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| 53 | { |
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| 54 | if (dividend == 0) |
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| 55 | return 1; |
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| 56 | return ((dividend - 1) / divisor) + 1; |
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| 57 | } |
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| 58 | |
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| 59 | /** |
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| 60 | * Return the number of inodes as a percentage of the total number that can fit |
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| 61 | * in a blocl. |
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| 62 | */ |
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| 63 | static int |
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| 64 | rtems_rfs_inodes_from_percent (rtems_rfs_file_system* fs, |
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| 65 | int percentage) |
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| 66 | { |
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| 67 | int blocks; |
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[3cfa636] | 68 | blocks = ((rtems_rfs_fs_blocks (fs) - |
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| 69 | RTEMS_RFS_SUPERBLOCK_SIZE) * percentage) / 100; |
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| 70 | blocks = rtems_rfs_rup_quotient (blocks, fs->group_count); |
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| 71 | return blocks * (rtems_rfs_fs_block_size (fs) / RTEMS_RFS_INODE_SIZE); |
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[a9fa9b7] | 72 | } |
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| 73 | |
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| 74 | /** |
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| 75 | * Return the inode overhead given a number of inodes. |
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| 76 | */ |
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| 77 | static int |
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| 78 | rtems_rfs_inode_overhead (rtems_rfs_file_system* fs) |
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| 79 | { |
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| 80 | int blocks; |
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[3cfa636] | 81 | int bits_per_block; |
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| 82 | blocks = rtems_rfs_rup_quotient(fs->group_inodes * RTEMS_RFS_INODE_SIZE, |
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| 83 | rtems_rfs_fs_block_size (fs)); |
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| 84 | bits_per_block = rtems_rfs_bits_per_block (fs); |
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| 85 | /* |
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| 86 | * There could be more bits that there are blocks, eg 512K disk with 512 |
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| 87 | * blocks. |
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| 88 | */ |
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| 89 | if (bits_per_block > (rtems_rfs_fs_blocks (fs) - RTEMS_RFS_SUPERBLOCK_SIZE)) |
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| 90 | bits_per_block = rtems_rfs_fs_blocks (fs) - RTEMS_RFS_SUPERBLOCK_SIZE; |
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| 91 | return ((blocks + 1) * 100 * 10) / bits_per_block; |
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[a9fa9b7] | 92 | } |
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| 93 | |
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| 94 | static bool |
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| 95 | rtems_rfs_check_config (rtems_rfs_file_system* fs, |
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| 96 | const rtems_rfs_format_config* config) |
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| 97 | { |
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| 98 | fs->block_size = config->block_size; |
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| 99 | if (!fs->block_size) |
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| 100 | { |
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| 101 | uint64_t total_size = rtems_rfs_fs_media_size (fs); |
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| 102 | |
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[3cfa636] | 103 | if (total_size >= GIGS (1)) |
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[a9fa9b7] | 104 | { |
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| 105 | uint32_t gigs = (total_size + GIGS (1)) / GIGS (1); |
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| 106 | int b; |
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| 107 | for (b = 31; b > 0; b--) |
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| 108 | if ((gigs & (1 << b)) != 0) |
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| 109 | break; |
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| 110 | fs->block_size = 1 << b; |
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| 111 | } |
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| 112 | |
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[3cfa636] | 113 | if (fs->block_size < 512) |
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| 114 | fs->block_size = 512; |
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[a9fa9b7] | 115 | |
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| 116 | if (fs->block_size > (4 * 1024)) |
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| 117 | fs->block_size = (4 * 1024); |
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| 118 | } |
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| 119 | |
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| 120 | if ((fs->block_size % rtems_rfs_fs_media_block_size (fs)) != 0) |
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| 121 | { |
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[5fe3834] | 122 | printf ("block size (%zd) is not a multiple of media block size (%ld)\n", |
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[a9fa9b7] | 123 | fs->block_size, rtems_rfs_fs_media_block_size (fs)); |
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| 124 | return false; |
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| 125 | } |
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| 126 | |
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| 127 | fs->group_blocks = config->group_blocks; |
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| 128 | if (!fs->group_blocks) |
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| 129 | { |
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| 130 | /* |
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| 131 | * The number of blocks per group is defined by the number of bits in a |
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| 132 | * block. |
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| 133 | */ |
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| 134 | fs->group_blocks = rtems_rfs_bitmap_numof_bits (fs->block_size); |
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| 135 | } |
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| 136 | |
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| 137 | if (fs->group_blocks > rtems_rfs_bitmap_numof_bits (fs->block_size)) |
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| 138 | { |
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| 139 | printf ("group block count is higher than bits in block\n"); |
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| 140 | return false; |
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| 141 | } |
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| 142 | |
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[3cfa636] | 143 | fs->blocks = rtems_rfs_fs_media_size (fs) / fs->block_size; |
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| 144 | |
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| 145 | /* |
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| 146 | * The bits per block sets the upper limit for the number of blocks in a |
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| 147 | * group. The disk will be divided into groups which are the number of bits |
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| 148 | * per block. |
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| 149 | */ |
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| 150 | fs->group_count = rtems_rfs_rup_quotient (rtems_rfs_fs_blocks (fs), |
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| 151 | rtems_rfs_bits_per_block (fs)); |
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| 152 | |
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[a9fa9b7] | 153 | fs->group_inodes = config->group_inodes; |
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| 154 | if (!fs->group_inodes) |
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| 155 | { |
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| 156 | int inode_overhead = RTEMS_RFS_INODE_OVERHEAD_PERCENTAGE; |
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| 157 | |
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| 158 | /* |
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| 159 | * The number of inodes per group is set as a percentage. |
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| 160 | */ |
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| 161 | if (config->inode_overhead) |
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| 162 | inode_overhead = config->inode_overhead; |
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| 163 | |
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| 164 | fs->group_inodes = rtems_rfs_inodes_from_percent (fs, inode_overhead); |
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| 165 | } |
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| 166 | |
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| 167 | /* |
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| 168 | * Round up to fill a block because the minimum allocation unit is a block. |
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| 169 | */ |
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[3cfa636] | 170 | fs->inodes_per_block = rtems_rfs_fs_block_size (fs) / RTEMS_RFS_INODE_SIZE; |
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[a9fa9b7] | 171 | fs->group_inodes = |
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| 172 | rtems_rfs_rup_quotient (fs->group_inodes, |
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| 173 | fs->inodes_per_block) * fs->inodes_per_block; |
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| 174 | |
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| 175 | if (fs->group_inodes > rtems_rfs_bitmap_numof_bits (fs->block_size)) |
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| 176 | fs->group_inodes = rtems_rfs_bitmap_numof_bits (fs->block_size); |
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| 177 | |
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| 178 | fs->max_name_length = config->max_name_length; |
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| 179 | if (!fs->max_name_length) |
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| 180 | { |
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| 181 | fs->max_name_length = 512; |
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| 182 | } |
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| 183 | |
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| 184 | return true; |
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| 185 | } |
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| 186 | |
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| 187 | static bool |
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| 188 | rtems_rfs_write_group (rtems_rfs_file_system* fs, |
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| 189 | int group, |
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| 190 | bool initialise_inodes, |
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| 191 | bool verbose) |
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| 192 | { |
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| 193 | rtems_rfs_buffer_handle handle; |
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| 194 | rtems_rfs_bitmap_control bitmap; |
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| 195 | rtems_rfs_buffer_block group_base; |
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| 196 | size_t group_size; |
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| 197 | int blocks; |
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| 198 | int b; |
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| 199 | int rc; |
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| 200 | |
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| 201 | group_base = rtems_rfs_fs_block (fs, group, 0); |
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| 202 | |
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| 203 | if (group_base > rtems_rfs_fs_blocks (fs)) |
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| 204 | { |
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| 205 | printf ("rtems-rfs: write-group: group %d base beyond disk limit\n", |
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| 206 | group); |
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| 207 | return false; |
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| 208 | } |
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| 209 | |
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| 210 | group_size = fs->group_blocks; |
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| 211 | |
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| 212 | /* |
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| 213 | * Be nice to strange sizes of disks. These are embedded systems after all |
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| 214 | * and nice numbers do not always work out. Let the last block pick up the |
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| 215 | * remainder of the blocks. |
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| 216 | */ |
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| 217 | if ((group_base + group_size) > rtems_rfs_fs_blocks (fs)) |
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| 218 | group_size = rtems_rfs_fs_blocks (fs) - group_base; |
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| 219 | |
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| 220 | if (verbose) |
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[5fe3834] | 221 | printf ("\rrtems-rfs: format: group %3d: base = %ld, size = %zd", |
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[a9fa9b7] | 222 | group, group_base, group_size); |
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| 223 | |
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| 224 | /* |
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| 225 | * Open a handle and request an empty buffer. |
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| 226 | */ |
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| 227 | rc = rtems_rfs_buffer_handle_open (fs, &handle); |
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| 228 | if (rc > 0) |
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| 229 | { |
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| 230 | printf ("\nrtems-rfs: write-group: handle open failed: %d: %s\n", |
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| 231 | rc, strerror (rc)); |
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| 232 | return false; |
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| 233 | } |
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| 234 | |
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| 235 | if (verbose) |
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| 236 | printf (", blocks"); |
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| 237 | |
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| 238 | /* |
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| 239 | * Open the block bitmap using the new buffer. |
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| 240 | */ |
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| 241 | rc = rtems_rfs_bitmap_open (&bitmap, fs, &handle, group_size, |
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| 242 | group_base + RTEMS_RFS_GROUP_BLOCK_BITMAP_BLOCK); |
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| 243 | if (rc > 0) |
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| 244 | { |
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| 245 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 246 | printf ("\nrtems-rfs: write-group: group %3d: open block bitmap failed: %d: %s\n", |
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| 247 | group, rc, strerror (rc)); |
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| 248 | return false; |
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| 249 | } |
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| 250 | |
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| 251 | /* |
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| 252 | * Force the whole buffer to a known state. The bit map may not occupy the |
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| 253 | * whole block. |
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| 254 | */ |
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| 255 | memset (rtems_rfs_buffer_data (&handle), 0xff, rtems_rfs_fs_block_size (fs)); |
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| 256 | |
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| 257 | /* |
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| 258 | * Clear the bitmap. |
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| 259 | */ |
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| 260 | rc = rtems_rfs_bitmap_map_clear_all (&bitmap); |
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| 261 | if (rc > 0) |
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| 262 | { |
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| 263 | rtems_rfs_bitmap_close (&bitmap); |
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| 264 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 265 | printf ("\nrtems-rfs: write-group: group %3d: block bitmap clear all failed: %d: %s\n", |
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| 266 | group, rc, strerror (rc)); |
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| 267 | return false; |
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| 268 | } |
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| 269 | |
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| 270 | /* |
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| 271 | * Forced allocation of the block bitmap. |
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| 272 | */ |
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| 273 | rtems_rfs_bitmap_map_set (&bitmap, RTEMS_RFS_GROUP_BLOCK_BITMAP_BLOCK); |
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| 274 | |
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| 275 | /* |
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| 276 | * Forced allocation of the inode bitmap. |
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| 277 | */ |
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| 278 | rtems_rfs_bitmap_map_set (&bitmap, RTEMS_RFS_GROUP_INODE_BITMAP_BLOCK); |
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| 279 | |
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| 280 | /* |
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| 281 | * Determine the number of inodes blocks in the group. |
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| 282 | */ |
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| 283 | blocks = rtems_rfs_rup_quotient (fs->group_inodes, fs->inodes_per_block); |
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| 284 | |
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| 285 | /* |
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| 286 | * Forced allocation of the inode blocks which follow the block bitmap. |
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| 287 | */ |
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| 288 | for (b = 0; b < blocks; b++) |
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| 289 | rtems_rfs_bitmap_map_set (&bitmap, b + RTEMS_RFS_GROUP_INODE_BLOCK); |
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| 290 | |
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| 291 | /* |
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| 292 | * Close the block bitmap. |
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| 293 | */ |
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| 294 | rc = rtems_rfs_bitmap_close (&bitmap); |
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| 295 | if (rc > 0) |
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| 296 | { |
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| 297 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 298 | printf ("\nrtems-rfs: write-group: group %3d: close block bitmap failed: %d: %s\n", |
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| 299 | group, rc, strerror (rc)); |
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| 300 | return false; |
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| 301 | } |
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| 302 | |
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| 303 | rtems_rfs_buffer_mark_dirty (&handle); |
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| 304 | |
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| 305 | if (verbose) |
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| 306 | printf (", inodes"); |
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| 307 | |
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| 308 | /* |
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| 309 | * Open the inode bitmap using the old buffer. Should release any changes. |
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| 310 | */ |
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| 311 | rc = rtems_rfs_bitmap_open (&bitmap, fs, &handle, group_size, |
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| 312 | group_base + RTEMS_RFS_GROUP_INODE_BITMAP_BLOCK); |
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| 313 | if (rc > 0) |
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| 314 | { |
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| 315 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 316 | printf ("\nrtems-rfs: write-group: group %3d: open inode bitmap failed: %d: %s\n", |
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| 317 | group, rc, strerror (rc)); |
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| 318 | return false; |
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| 319 | } |
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| 320 | |
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| 321 | /* |
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| 322 | * Force the whole buffer to a known state. The bit map may not occupy the |
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| 323 | * whole block. |
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| 324 | */ |
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| 325 | memset (rtems_rfs_buffer_data (&handle), 0x00, rtems_rfs_fs_block_size (fs)); |
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| 326 | |
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| 327 | /* |
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| 328 | * Clear the inode bitmap. |
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| 329 | */ |
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| 330 | rc = rtems_rfs_bitmap_map_clear_all (&bitmap); |
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| 331 | if (rc > 0) |
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| 332 | { |
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| 333 | rtems_rfs_bitmap_close (&bitmap); |
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| 334 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 335 | printf ("\nrtems-rfs: write-group: group %3d: inode bitmap" \ |
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| 336 | " clear all failed: %d: %s\n", group, rc, strerror (rc)); |
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| 337 | return false; |
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| 338 | } |
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| 339 | |
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| 340 | /* |
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| 341 | * Close the inode bitmap. |
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| 342 | */ |
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| 343 | rc = rtems_rfs_bitmap_close (&bitmap); |
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| 344 | if (rc > 0) |
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| 345 | { |
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| 346 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 347 | printf ("\nrtems-rfs: write-group: group %3d: close inode" \ |
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| 348 | " bitmap failed: %d: %s\n", group, rc, strerror (rc)); |
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| 349 | return false; |
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| 350 | } |
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| 351 | |
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| 352 | rtems_rfs_buffer_mark_dirty (&handle); |
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| 353 | |
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| 354 | /* |
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| 355 | * Initialise the inode tables if rerquired to do so. |
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| 356 | */ |
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| 357 | if (initialise_inodes) |
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| 358 | { |
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| 359 | for (b = 0; b < blocks; b++) |
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| 360 | { |
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| 361 | rc = rtems_rfs_buffer_handle_request (fs, &handle, |
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| 362 | group_base + b + RTEMS_RFS_GROUP_INODE_BLOCK, |
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| 363 | false); |
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| 364 | if (rc > 0) |
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| 365 | { |
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| 366 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 367 | printf ("\nrtems-rfs: write-group: group %3d: block %ld request failed: %d: %s\n", |
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| 368 | group, group_base + b + RTEMS_RFS_GROUP_INODE_BLOCK, |
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| 369 | rc, strerror (rc)); |
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| 370 | return false; |
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| 371 | } |
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| 372 | |
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| 373 | /* |
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| 374 | * Force the whole buffer to a known state. The bit map may not occupy the |
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| 375 | * whole block. |
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| 376 | */ |
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| 377 | memset (rtems_rfs_buffer_data (&handle), 0xff, rtems_rfs_fs_block_size (fs)); |
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| 378 | |
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| 379 | rtems_rfs_buffer_mark_dirty (&handle); |
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| 380 | } |
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| 381 | } |
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| 382 | |
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| 383 | rc = rtems_rfs_buffer_handle_close (fs, &handle); |
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| 384 | if (rc > 0) |
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| 385 | { |
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| 386 | printf ("\nrtems-rfs: write-group: buffer handle close failed: %d: %s\n", |
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| 387 | rc, strerror (rc)); |
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| 388 | return false; |
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| 389 | } |
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| 390 | |
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| 391 | return true; |
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| 392 | } |
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| 393 | |
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| 394 | static bool |
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| 395 | rtems_rfs_write_superblock (rtems_rfs_file_system* fs) |
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| 396 | { |
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| 397 | rtems_rfs_buffer_handle handle; |
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| 398 | uint8_t* sb; |
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| 399 | int rc; |
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| 400 | |
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| 401 | rc = rtems_rfs_buffer_handle_open (fs, &handle); |
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| 402 | if (rc > 0) |
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| 403 | { |
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| 404 | printf ("rtems-rfs: write-superblock: handle open failed: %d: %s\n", |
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| 405 | rc, strerror (rc)); |
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| 406 | return false; |
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| 407 | } |
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| 408 | |
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| 409 | rc = rtems_rfs_buffer_handle_request (fs, &handle, 0, false); |
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| 410 | if (rc > 0) |
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| 411 | { |
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| 412 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 413 | printf ("rtems-rfs: write-superblock: request failed: %d: %s\n", |
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| 414 | rc, strerror (rc)); |
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| 415 | return false; |
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| 416 | } |
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| 417 | |
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| 418 | sb = rtems_rfs_buffer_data (&handle); |
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| 419 | |
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| 420 | #define write_sb(_o, _d) rtems_rfs_write_u32(sb + (_o), _d) |
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| 421 | |
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| 422 | memset (sb, 0xff, rtems_rfs_fs_block_size (fs)); |
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| 423 | |
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| 424 | write_sb (RTEMS_RFS_SB_OFFSET_MAGIC, RTEMS_RFS_SB_MAGIC); |
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[3cfa636] | 425 | write_sb (RTEMS_RFS_SB_OFFSET_VERSION, RTEMS_RFS_VERSION); |
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[a9fa9b7] | 426 | write_sb (RTEMS_RFS_SB_OFFSET_BLOCKS, rtems_rfs_fs_blocks (fs)); |
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| 427 | write_sb (RTEMS_RFS_SB_OFFSET_BLOCK_SIZE, rtems_rfs_fs_block_size (fs)); |
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| 428 | write_sb (RTEMS_RFS_SB_OFFSET_BAD_BLOCKS, fs->bad_blocks); |
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| 429 | write_sb (RTEMS_RFS_SB_OFFSET_MAX_NAME_LENGTH, fs->max_name_length); |
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| 430 | write_sb (RTEMS_RFS_SB_OFFSET_GROUPS, fs->group_count); |
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| 431 | write_sb (RTEMS_RFS_SB_OFFSET_GROUP_BLOCKS, fs->group_blocks); |
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| 432 | write_sb (RTEMS_RFS_SB_OFFSET_GROUP_INODES, fs->group_inodes); |
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[3cfa636] | 433 | write_sb (RTEMS_RFS_SB_OFFSET_INODE_SIZE, RTEMS_RFS_INODE_SIZE); |
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[a9fa9b7] | 434 | |
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| 435 | rtems_rfs_buffer_mark_dirty (&handle); |
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| 436 | |
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| 437 | rc = rtems_rfs_buffer_handle_release (fs, &handle); |
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| 438 | if (rc > 0) |
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| 439 | { |
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| 440 | rtems_rfs_buffer_handle_close (fs, &handle); |
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| 441 | printf ("rtems-rfs: write-superblock: buffer release failed: %d: %s\n", |
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| 442 | rc, strerror (rc)); |
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| 443 | return false; |
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| 444 | } |
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| 445 | |
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| 446 | rc = rtems_rfs_buffer_handle_close (fs, &handle); |
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| 447 | if (rc > 0) |
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| 448 | { |
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| 449 | printf ("rtems-rfs: write-superblock: buffer handle close failed: %d: %s\n", |
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| 450 | rc, strerror (rc)); |
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| 451 | return false; |
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| 452 | } |
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| 453 | |
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| 454 | return true; |
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| 455 | } |
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| 456 | |
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| 457 | static int |
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| 458 | rtems_rfs_write_root_dir (const char* name) |
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| 459 | { |
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| 460 | rtems_rfs_file_system* fs; |
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| 461 | rtems_rfs_inode_handle inode; |
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| 462 | rtems_rfs_ino ino; |
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| 463 | int rc; |
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| 464 | |
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| 465 | /* |
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| 466 | * External API so returns -1. |
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| 467 | */ |
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| 468 | rc = rtems_rfs_fs_open (name, NULL, RTEMS_RFS_FS_FORCE_OPEN, &fs); |
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| 469 | if (rc < 0) |
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| 470 | { |
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| 471 | printf ("rtems-rfs: format: file system open failed: %d: %s\n", |
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| 472 | errno, strerror (errno)); |
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| 473 | return -1; |
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| 474 | } |
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| 475 | |
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| 476 | rc = rtems_rfs_inode_alloc (fs, RTEMS_RFS_ROOT_INO, &ino); |
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| 477 | if (rc > 0) |
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| 478 | { |
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| 479 | printf ("rtems-rfs: format: inode allocation failed: %d: %s\n", |
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| 480 | rc, strerror (rc)); |
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| 481 | rtems_rfs_fs_close (fs); |
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| 482 | return rc; |
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| 483 | } |
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| 484 | |
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| 485 | if (ino != RTEMS_RFS_ROOT_INO) |
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| 486 | { |
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| 487 | printf ("rtems-rfs: format: allocated inode not root ino: %ld\n", ino); |
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| 488 | rtems_rfs_fs_close (fs); |
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| 489 | return rc; |
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| 490 | } |
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| 491 | |
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| 492 | rc = rtems_rfs_inode_open (fs, ino, &inode, true); |
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| 493 | if (rc > 0) |
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| 494 | { |
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| 495 | printf ("rtems-rfs: format: inode open failed: %d: %s\n", |
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| 496 | rc, strerror (rc)); |
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| 497 | rtems_rfs_group_bitmap_free (fs, true, ino); |
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| 498 | rtems_rfs_fs_close (fs); |
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| 499 | return rc; |
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| 500 | } |
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| 501 | |
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| 502 | rc = rtems_rfs_inode_initialise (&inode, 0, |
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| 503 | (RTEMS_RFS_S_IFDIR | RTEMS_RFS_S_IRWXU | |
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| 504 | RTEMS_RFS_S_IXGRP | RTEMS_RFS_S_IXOTH), |
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| 505 | 0, 0); |
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| 506 | if (rc > 0) |
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| 507 | printf ("rtems-rfs: format: inode initialise failed: %d: %s\n", |
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| 508 | rc, strerror (rc)); |
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| 509 | |
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| 510 | rc = rtems_rfs_dir_add_entry (fs, &inode, ".", 1, ino); |
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| 511 | if (rc > 0) |
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| 512 | printf ("rtems-rfs: format: directory add failed: %d: %s\n", |
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| 513 | rc, strerror (rc)); |
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| 514 | |
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| 515 | rc = rtems_rfs_inode_close (fs, &inode); |
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| 516 | if (rc > 0) |
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| 517 | printf ("rtems-rfs: format: inode close failed: %d: %s\n", |
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| 518 | rc, strerror (rc)); |
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| 519 | |
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| 520 | rc = rtems_rfs_fs_close (fs); |
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| 521 | if (rc < 0) |
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| 522 | printf ("rtems-rfs: format: file system close failed: %d: %s\n", |
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| 523 | errno, strerror (errno)); |
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| 524 | |
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| 525 | return rc; |
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| 526 | } |
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| 527 | |
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| 528 | int |
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| 529 | rtems_rfs_format (const char* name, const rtems_rfs_format_config* config) |
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| 530 | { |
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| 531 | rtems_rfs_file_system fs; |
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| 532 | int group; |
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| 533 | int rc; |
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| 534 | |
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| 535 | if (config->verbose) |
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| 536 | printf ("rtems-rfs: format: %s\n", name); |
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| 537 | |
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| 538 | memset (&fs, 0, sizeof (rtems_rfs_file_system)); |
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| 539 | |
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| 540 | rtems_chain_initialize_empty (&fs.release); |
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| 541 | rtems_chain_initialize_empty (&fs.release_modified); |
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| 542 | rtems_chain_initialize_empty (&fs.file_shares); |
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| 543 | |
---|
| 544 | fs.max_held_buffers = RTEMS_RFS_FS_MAX_HELD_BUFFERS; |
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| 545 | |
---|
| 546 | fs.release_count = 0; |
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| 547 | fs.release_modified_count = 0; |
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| 548 | |
---|
| 549 | fs.flags = RTEMS_RFS_FS_NO_LOCAL_CACHE; |
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| 550 | |
---|
| 551 | /* |
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| 552 | * Open the buffer interface. |
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| 553 | */ |
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| 554 | rc = rtems_rfs_buffer_open (name, &fs); |
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| 555 | if (rc > 0) |
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| 556 | { |
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| 557 | printf ("rtems-rfs: format: buffer open failed: %d: %s\n", |
---|
| 558 | rc, strerror (rc)); |
---|
| 559 | return -1; |
---|
| 560 | } |
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| 561 | |
---|
| 562 | /* |
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| 563 | * Check the media. |
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| 564 | */ |
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| 565 | if (rtems_rfs_fs_media_block_size (&fs) == 0) |
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| 566 | { |
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| 567 | printf ("rtems-rfs: media block is invalid: %lu\n", |
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| 568 | rtems_rfs_fs_media_block_size (&fs)); |
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| 569 | return -1; |
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| 570 | } |
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| 571 | |
---|
| 572 | /* |
---|
| 573 | * Check the configuration data. |
---|
| 574 | */ |
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| 575 | if (!rtems_rfs_check_config (&fs, config)) |
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| 576 | return -1; |
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| 577 | |
---|
| 578 | if (config->verbose) |
---|
| 579 | { |
---|
| 580 | printf ("rtems-rfs: format: media size = %llu\n", |
---|
| 581 | rtems_rfs_fs_media_size (&fs)); |
---|
| 582 | printf ("rtems-rfs: format: media blocks = %ld\n", |
---|
| 583 | rtems_rfs_fs_media_blocks (&fs)); |
---|
| 584 | printf ("rtems-rfs: format: media block size = %lu\n", |
---|
| 585 | rtems_rfs_fs_media_block_size (&fs)); |
---|
| 586 | printf ("rtems-rfs: format: size = %llu\n", |
---|
| 587 | rtems_rfs_fs_size (&fs)); |
---|
[5fe3834] | 588 | printf ("rtems-rfs: format: blocks = %zu\n", |
---|
[a9fa9b7] | 589 | rtems_rfs_fs_blocks (&fs)); |
---|
[5fe3834] | 590 | printf ("rtems-rfs: format: block size = %zu\n", |
---|
[a9fa9b7] | 591 | rtems_rfs_fs_block_size (&fs)); |
---|
| 592 | printf ("rtems-rfs: format: bits per block = %u\n", |
---|
| 593 | rtems_rfs_bits_per_block (&fs)); |
---|
[5fe3834] | 594 | printf ("rtems-rfs: format: inode size = %zu\n", RTEMS_RFS_INODE_SIZE); |
---|
| 595 | printf ("rtems-rfs: format: inodes = %zu (%d.%d%%)\n", |
---|
[a9fa9b7] | 596 | fs.group_inodes * fs.group_count, |
---|
| 597 | rtems_rfs_inode_overhead (&fs) / 10, |
---|
| 598 | rtems_rfs_inode_overhead (&fs) % 10); |
---|
| 599 | printf ("rtems-rfs: format: groups = %u\n", fs.group_count); |
---|
[5fe3834] | 600 | printf ("rtems-rfs: format: group blocks = %zu\n", fs.group_blocks); |
---|
| 601 | printf ("rtems-rfs: format: group inodes = %zu\n", fs.group_inodes); |
---|
[a9fa9b7] | 602 | } |
---|
| 603 | |
---|
| 604 | rc = rtems_rfs_buffer_setblksize (&fs, rtems_rfs_fs_block_size (&fs)); |
---|
| 605 | if (rc > 0) |
---|
| 606 | { |
---|
| 607 | printf ("rtems-rfs: format: setting block size failed: %d: %s\n", |
---|
| 608 | rc, strerror (rc)); |
---|
| 609 | return -1; |
---|
| 610 | } |
---|
| 611 | |
---|
| 612 | if (!rtems_rfs_write_superblock (&fs)) |
---|
| 613 | { |
---|
| 614 | printf ("rtems-rfs: format: superblock write failed\n"); |
---|
| 615 | return -1; |
---|
| 616 | } |
---|
| 617 | |
---|
| 618 | for (group = 0; group < fs.group_count; group++) |
---|
| 619 | if (!rtems_rfs_write_group (&fs, group, |
---|
| 620 | config->initialise_inodes, config->verbose)) |
---|
| 621 | return -1; |
---|
| 622 | |
---|
| 623 | if (config->verbose) |
---|
| 624 | printf ("\n"); |
---|
| 625 | |
---|
| 626 | rc = rtems_rfs_buffer_close (&fs); |
---|
| 627 | if (rc > 0) |
---|
| 628 | { |
---|
| 629 | printf ("rtems-rfs: format: buffer close failed: %d: %s\n", |
---|
| 630 | rc, strerror (rc)); |
---|
| 631 | return -1; |
---|
| 632 | } |
---|
| 633 | |
---|
| 634 | rc = rtems_rfs_write_root_dir (name); |
---|
| 635 | if (rc > 0) |
---|
| 636 | { |
---|
| 637 | printf ("rtems-rfs: format: writing root dir failed: %d: %s\n", |
---|
| 638 | rc, strerror (rc)); |
---|
| 639 | return -1; |
---|
| 640 | } |
---|
| 641 | |
---|
| 642 | return 0; |
---|
| 643 | } |
---|