[07c833f] | 1 | /* |
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| 2 | * Copyright (c) 2016 embedded brains GmbH. All rights reserved. |
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| 3 | * |
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| 4 | * embedded brains GmbH |
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| 5 | * Dornierstr. 4 |
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| 6 | * 82178 Puchheim |
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| 7 | * Germany |
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| 8 | * <rtems@embedded-brains.de> |
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| 9 | * |
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| 10 | * The license and distribution terms for this file may be |
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| 11 | * found in the file LICENSE in this distribution or at |
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| 12 | * http://www.rtems.org/license/LICENSE. |
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| 13 | */ |
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| 14 | |
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| 15 | #ifdef HAVE_CONFIG_H |
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| 16 | #include "config.h" |
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| 17 | #endif |
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| 18 | |
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| 19 | #include <tmacros.h> |
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| 20 | #include <fstest.h> |
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| 21 | |
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| 22 | #include <sys/stat.h> |
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| 23 | #include <string.h> |
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| 24 | #include <fcntl.h> |
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| 25 | #include <unistd.h> |
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| 26 | #include <errno.h> |
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| 27 | |
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| 28 | #include <rtems/jffs2.h> |
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| 29 | |
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| 30 | const char rtems_test_name[] = "FSJFFS2GC 1"; |
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| 31 | |
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| 32 | static const rtems_jffs2_info info_initial = { |
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| 33 | .flash_size = 131072, |
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| 34 | .flash_blocks = 8, |
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| 35 | .flash_block_size = 16384, |
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| 36 | .used_size = 96, |
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| 37 | .dirty_size = 0, |
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| 38 | .wasted_size = 0, |
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| 39 | .free_size = 130976, |
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| 40 | .bad_size = 0, |
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| 41 | .clean_blocks = 0, |
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| 42 | .dirty_blocks = 0, |
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| 43 | .erasable_blocks = 0, |
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| 44 | .free_blocks = 8, |
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| 45 | .bad_blocks = 0 |
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| 46 | }; |
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| 47 | |
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| 48 | static const rtems_jffs2_info info_big_created = { |
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| 49 | .flash_size = 131072, |
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| 50 | .flash_blocks = 8, |
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| 51 | .flash_block_size = 16384, |
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| 52 | .used_size = 22292, |
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| 53 | .dirty_size = 0, |
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| 54 | .wasted_size = 164, |
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| 55 | .free_size = 108616, |
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| 56 | .bad_size = 0, |
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| 57 | .clean_blocks = 1, |
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| 58 | .dirty_blocks = 0, |
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| 59 | .erasable_blocks = 0, |
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| 60 | .free_blocks = 7, |
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| 61 | .bad_blocks = 0 |
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| 62 | }; |
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| 63 | |
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| 64 | static const rtems_jffs2_info info_big_removed = { |
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| 65 | .flash_size = 131072, |
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| 66 | .flash_blocks = 8, |
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| 67 | .flash_block_size = 16384, |
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| 68 | .used_size = 72, |
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| 69 | .dirty_size = 16384, |
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| 70 | .wasted_size = 6000, |
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| 71 | .free_size = 108616, |
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| 72 | .bad_size = 0, |
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| 73 | .clean_blocks = 0, |
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| 74 | .dirty_blocks = 0, |
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| 75 | .erasable_blocks = 1, |
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| 76 | .free_blocks = 7, |
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| 77 | .bad_blocks = 0 |
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| 78 | }; |
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| 79 | |
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| 80 | static const rtems_jffs2_info info_more_files_created = { |
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| 81 | .flash_size = 131072, |
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| 82 | .flash_blocks = 8, |
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| 83 | .flash_block_size = 16384, |
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| 84 | .used_size = 54896, |
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| 85 | .dirty_size = 23336, |
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| 86 | .wasted_size = 36, |
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| 87 | .free_size = 52804, |
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| 88 | .bad_size = 0, |
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| 89 | .clean_blocks = 2, |
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| 90 | .dirty_blocks = 1, |
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| 91 | .erasable_blocks = 1, |
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| 92 | .free_blocks = 4, |
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| 93 | .bad_blocks = 0 |
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| 94 | }; |
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| 95 | |
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| 96 | static const rtems_jffs2_info info_some_files_removed = { |
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| 97 | .flash_size = 131072, |
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| 98 | .flash_blocks = 8, |
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| 99 | .flash_block_size = 16384, |
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| 100 | .used_size = 23528, |
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| 101 | .dirty_size = 47372, |
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| 102 | .wasted_size = 7368, |
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| 103 | .free_size = 52804, |
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| 104 | .bad_size = 0, |
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| 105 | .clean_blocks = 0, |
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| 106 | .dirty_blocks = 3, |
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| 107 | .erasable_blocks = 1, |
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| 108 | .free_blocks = 4, |
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| 109 | .bad_blocks = 0 |
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| 110 | }; |
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| 111 | |
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[ade135d4] | 112 | static const rtems_jffs2_info info_after_first_gc = { |
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| 113 | .flash_size = 131072, |
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| 114 | .flash_blocks = 8, |
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| 115 | .flash_block_size = 16384, |
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| 116 | .used_size = 23540, |
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| 117 | .dirty_size = 30988, |
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| 118 | .wasted_size = 7368, |
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| 119 | .free_size = 69176, |
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| 120 | .bad_size = 0, |
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| 121 | .clean_blocks = 0, |
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| 122 | .dirty_blocks = 3, |
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| 123 | .erasable_blocks = 0, |
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| 124 | .free_blocks = 5, |
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| 125 | .bad_blocks = 0 |
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| 126 | }; |
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| 127 | |
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| 128 | static const rtems_jffs2_info info_after_excessive_gc = { |
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| 129 | .flash_size = 131072, |
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| 130 | .flash_blocks = 8, |
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| 131 | .flash_block_size = 16384, |
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| 132 | .used_size = 7224, |
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| 133 | .dirty_size = 0, |
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| 134 | .wasted_size = 12, |
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| 135 | .free_size = 123836, |
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| 136 | .bad_size = 0, |
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| 137 | .clean_blocks = 0, |
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| 138 | .dirty_blocks = 0, |
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| 139 | .erasable_blocks = 0, |
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| 140 | .free_blocks = 8, |
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| 141 | .bad_blocks = 0 |
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| 142 | }; |
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| 143 | |
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[07c833f] | 144 | static char big[] = "big"; |
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| 145 | |
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| 146 | static const char * const more[] = { |
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| 147 | "1", |
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| 148 | "2", |
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| 149 | "3", |
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| 150 | "4", |
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| 151 | "5", |
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| 152 | "6", |
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| 153 | "7" |
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| 154 | }; |
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| 155 | |
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| 156 | #define ASSERT_INFO(a, b) do { \ |
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| 157 | rv = ioctl(fd, RTEMS_JFFS2_GET_INFO, &info); \ |
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| 158 | rtems_test_assert(rv == 0); \ |
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| 159 | rtems_test_assert(memcmp(a, b, sizeof(*a)) == 0); \ |
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| 160 | } while (0) |
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| 161 | |
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| 162 | static const mode_t mode = S_IRWXU | S_IRWXG | S_IRWXO; |
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| 163 | |
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| 164 | static char keg[523]; |
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| 165 | |
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| 166 | static uint32_t simple_random(uint32_t v) |
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| 167 | { |
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| 168 | v *= 1664525; |
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| 169 | v += 1013904223; |
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| 170 | |
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| 171 | return v; |
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| 172 | } |
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| 173 | |
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| 174 | static void init_keg(void) |
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| 175 | { |
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| 176 | size_t i; |
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| 177 | uint32_t v; |
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| 178 | |
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| 179 | v = 123; |
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| 180 | for (i = 0; i < sizeof(keg); ++i) { |
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| 181 | v = simple_random(v); |
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| 182 | keg[i] = (uint8_t) (v >> 23); |
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| 183 | } |
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| 184 | } |
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| 185 | |
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| 186 | static void write_kegs(int fd, int kegs) |
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| 187 | { |
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| 188 | int i; |
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| 189 | |
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| 190 | for (i = 0; i < kegs; ++i) { |
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| 191 | ssize_t n; |
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| 192 | |
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| 193 | n = write(fd, &keg[0], sizeof(keg)); |
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| 194 | rtems_test_assert(n == (ssize_t) sizeof(keg)); |
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| 195 | } |
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| 196 | } |
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| 197 | |
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| 198 | static void create_big_file(void) |
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| 199 | { |
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| 200 | int fd; |
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| 201 | int rv; |
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| 202 | |
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| 203 | fd = open(&big[0], O_WRONLY | O_TRUNC | O_CREAT, mode); |
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| 204 | rtems_test_assert(fd >= 0); |
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| 205 | |
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| 206 | write_kegs(fd, 37); |
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| 207 | |
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| 208 | rv = close(fd); |
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| 209 | rtems_test_assert(rv == 0); |
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| 210 | } |
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| 211 | |
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| 212 | static void remove_big_file(void) |
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| 213 | { |
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| 214 | int rv; |
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| 215 | |
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| 216 | rv = unlink(&big[0]); |
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| 217 | rtems_test_assert(rv == 0); |
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| 218 | } |
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| 219 | |
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| 220 | static void create_more_files(void) |
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| 221 | { |
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| 222 | int fds[RTEMS_ARRAY_SIZE(more)]; |
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| 223 | int rv; |
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| 224 | size_t i; |
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| 225 | int j; |
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| 226 | |
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| 227 | for (i = 0; i < RTEMS_ARRAY_SIZE(fds); ++i) { |
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| 228 | fds[i] = open(more[i], O_WRONLY | O_TRUNC | O_CREAT, mode); |
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| 229 | rtems_test_assert(fds[i] >= 0); |
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| 230 | } |
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| 231 | |
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| 232 | for (j = 0; j < 13; ++j) { |
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| 233 | for (i = 0; i < RTEMS_ARRAY_SIZE(fds); ++i) { |
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| 234 | write_kegs(fds[i], 1); |
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| 235 | } |
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| 236 | } |
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| 237 | |
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| 238 | for (i = 0; i < RTEMS_ARRAY_SIZE(fds); ++i) { |
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| 239 | rv = close(fds[i]); |
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| 240 | rtems_test_assert(rv == 0); |
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| 241 | } |
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| 242 | } |
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| 243 | |
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| 244 | static void remove_some_files(void) |
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| 245 | { |
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| 246 | size_t i; |
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| 247 | |
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| 248 | for (i = 0; i < RTEMS_ARRAY_SIZE(more); i += 2) { |
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| 249 | int rv; |
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| 250 | |
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| 251 | rv = unlink(more[i]); |
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| 252 | rtems_test_assert(rv == 0); |
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| 253 | } |
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| 254 | } |
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| 255 | |
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| 256 | void test(void) |
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| 257 | { |
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| 258 | int fd; |
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| 259 | int rv; |
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[ade135d4] | 260 | int counter; |
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[07c833f] | 261 | rtems_jffs2_info info; |
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| 262 | |
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| 263 | init_keg(); |
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| 264 | |
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| 265 | fd = open("/", O_RDONLY); |
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| 266 | rtems_test_assert(fd >= 0); |
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| 267 | |
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| 268 | ASSERT_INFO(&info, &info_initial); |
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| 269 | |
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| 270 | create_big_file(); |
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| 271 | ASSERT_INFO(&info, &info_big_created); |
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| 272 | |
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| 273 | remove_big_file(); |
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| 274 | ASSERT_INFO(&info, &info_big_removed); |
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| 275 | |
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| 276 | create_more_files(); |
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| 277 | ASSERT_INFO(&info, &info_more_files_created); |
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| 278 | |
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| 279 | remove_some_files(); |
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| 280 | ASSERT_INFO(&info, &info_some_files_removed); |
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| 281 | |
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[ade135d4] | 282 | rv = ioctl(fd, RTEMS_JFFS2_FORCE_GARBAGE_COLLECTION); |
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| 283 | rtems_test_assert(rv == 0); |
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| 284 | ASSERT_INFO(&info, &info_after_first_gc); |
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| 285 | |
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| 286 | counter = 0; |
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| 287 | |
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| 288 | while (true) { |
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| 289 | errno = ENXIO; |
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| 290 | rv = ioctl(fd, RTEMS_JFFS2_FORCE_GARBAGE_COLLECTION); |
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| 291 | if (rv == -1) { |
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| 292 | rtems_test_assert(errno == EIO); |
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| 293 | break; |
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| 294 | } |
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| 295 | |
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| 296 | ++counter; |
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| 297 | rtems_test_assert(rv == 0); |
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| 298 | } |
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| 299 | |
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| 300 | rtems_test_assert(counter == 19); |
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| 301 | |
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| 302 | rv = ioctl(fd, RTEMS_JFFS2_GET_INFO, &info); |
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| 303 | rtems_test_assert(rv == 0); |
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| 304 | ASSERT_INFO(&info, &info_after_excessive_gc); |
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| 305 | |
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[07c833f] | 306 | rv = close(fd); |
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| 307 | rtems_test_assert(rv == 0); |
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| 308 | } |
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