| /littlefs-2.7.6/scripts/ |
| D | readtree.py | 35 blocks[id(data[-1])] = block
107 print("%-47s%s" % ("littlefs v%s.%s" % version,
112 print("gstate 0x%s" % ''.join('%02x' % c for c in gstate))
118 print(" move dir {%#x, %#x} id %d" % (
127 print("mdir {%#x, %#x} rev %d (was %d)%s%s" % (
130 ' -> {%#x, %#x}' % struct.unpack('<II', mdir.tail.data)
144 ' ' if j == len(dir)-1 else
145 'v' if k == len(lines)-1 else
152 print("*** corrupted mdir {%#x, %#x}! ***" % (
157 print("*** cycle detected {%#x, %#x}! ***" % (
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| D | readmdir.py | 40 id = int(args[1], 0) if args[1] not in 'x.' else 0x3ff
45 size = int(args[2], str) if args[2] not in 'x.' else 0x3ff
123 mask = 0x7ff & ~((1 << prefix)-1)
127 return '%s %#0*x' % (
128 type, prefix//4, self.type & ((1 << prefix)-1))
132 return '%02x' % self.type
138 return repr(self.size) if self.size != 0x3ff else 'x'
182 while len(block) - off >= 4:
240 return not ((other.rev - self.rev) & 0x80000000)
258 tag.id <= gtag.id - gdiff):
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| D | readblock.py | 12 print("%-8s %-s" % ('off', 'data'))
13 return sp.run(['xxd', '-g1', '-'], input=block).returncode
22 parser.add_argument('block_size', type=lambda x: int(x, 0),
24 parser.add_argument('block', type=lambda x: int(x, 0),
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| D | explode_asserts.py | 93 printf("\\\\x%02x", s[i]);
188 'op': ['strcmp', 'memcmp', '->'],
377 parser.add_argument('-o', '--output', required=True,
379 parser.add_argument('-p', '--pattern', action='append',
381 parser.add_argument('--maxwidth', default=MAXWIDTH, type=int,
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| D | test.py | 27 ./scripts/explode_asserts.py $$< -o $$@
31 -include tests/*.d
35 $(CC) $(CFLAGS) $^ $(LFLAGS) -o $@
50 'LFS_BLOCK_CYCLES': -1,
188 key=lambda x: len(x[0]), reverse=True):
217 print('truncate --size=0', disk)
223 # simulate power-loss after n cycles?
231 ncmd.extend(['-ex', 'r'])
233 ncmd.extend(['-ex', 'up 2'])
236 '-ex', 'b %s:%d' % (self.suite.path, self.code_lineno),
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| /littlefs-2.7.6/ |
| D | lfs_util.h | 5 * SPDX-License-Identifier: BSD-3-Clause
11 // LFS_CONFIG as a header file to include (-DLFS_CONFIG=lfs_config.h).
17 #define LFS_STRINGIZE(x) LFS_STRINGIZE2(x) argument
18 #define LFS_STRINGIZE2(x) #x argument
65 // macros must not have side-effects as the macros can be removed for a smaller
130 // toolchain-specific implementations. LFS_NO_INTRINSICS falls back to a more
133 // Min/max functions for unsigned 32-bit numbers
144 return a - (a % alignment); in lfs_aligndown()
148 return lfs_aligndown(a + alignment-1, alignment); in lfs_alignup()
154 return 32 - __builtin_clz(a-1); in lfs_npw2()
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| D | lfs.c | 5 * SPDX-License-Identifier: BSD-3-Clause
10 #define LFS_BLOCK_NULL ((lfs_block_t)-1)
11 #define LFS_BLOCK_INLINE ((lfs_block_t)-2)
18 rcache->block = LFS_BLOCK_NULL; in lfs_cache_drop()
23 memset(pcache->buffer, 0xff, lfs->cfg->cache_size); in lfs_cache_zero()
24 pcache->block = LFS_BLOCK_NULL; in lfs_cache_zero()
32 if (block >= lfs->cfg->block_count || in lfs_bd_read()
33 off+size > lfs->cfg->block_size) { in lfs_bd_read()
40 if (pcache && block == pcache->block && in lfs_bd_read()
41 off < pcache->off + pcache->size) { in lfs_bd_read()
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| D | .travis.yml | 4 - CFLAGS=-Werror
5 - MAKEFLAGS=-j
11 - $HOME/.cache/apt
14 _: &install-common
16 - sudo apt-get install python3 python3-pip
17 - sudo pip3 install toml
18 # setup a ram-backed disk to speed up reentrant tests
19 - mkdir disks
20 - sudo mount -t tmpfs -o size=100m tmpfs disks
21 - export TFLAGS="$TFLAGS --disk=disks/disk"
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| D | DESIGN.md | 3 A little fail-safe filesystem designed for microcontrollers.
6 | | | .---._____
7 .-----. | |
8 --|o |---| littlefs |
9 --| |---| |
10 '-----' '----------'
16 filesystem that is resilient to power-loss and flash wear without using
19 This document covers the high-level design of littlefs, how it is different
21 low-level details covering every bit on disk, check out [SPEC.md](SPEC.md).
25 The embedded systems littlefs targets are usually 32-bit microcontrollers with
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| /littlefs-2.7.6/bd/ |
| D | lfs_rambd.c | 5 * SPDX-License-Identifier: BSD-3-Clause
16 (void*)cfg, cfg->context, in lfs_rambd_createcfg()
17 (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog, in lfs_rambd_createcfg()
18 (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync, in lfs_rambd_createcfg()
19 cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count, in lfs_rambd_createcfg()
20 (void*)bdcfg, bdcfg->erase_value, bdcfg->buffer); in lfs_rambd_createcfg()
21 lfs_rambd_t *bd = cfg->context; in lfs_rambd_createcfg()
22 bd->cfg = bdcfg; in lfs_rambd_createcfg()
25 if (bd->cfg->buffer) { in lfs_rambd_createcfg()
26 bd->buffer = bd->cfg->buffer; in lfs_rambd_createcfg()
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| D | lfs_filebd.c | 5 * SPDX-License-Identifier: BSD-3-Clause
21 (void*)cfg, cfg->context, in lfs_filebd_createcfg()
22 (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog, in lfs_filebd_createcfg()
23 (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync, in lfs_filebd_createcfg()
24 cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count, in lfs_filebd_createcfg()
25 path, (void*)bdcfg, bdcfg->erase_value); in lfs_filebd_createcfg()
26 lfs_filebd_t *bd = cfg->context; in lfs_filebd_createcfg()
27 bd->cfg = bdcfg; in lfs_filebd_createcfg()
30 bd->fd = open(path, O_RDWR | O_CREAT, 0666); in lfs_filebd_createcfg()
31 if (bd->fd < 0) { in lfs_filebd_createcfg()
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| D | lfs_testbd.c | 6 * SPDX-License-Identifier: BSD-3-Clause
23 (void*)cfg, cfg->context, in lfs_testbd_createcfg()
24 (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog, in lfs_testbd_createcfg()
25 (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync, in lfs_testbd_createcfg()
26 cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count, in lfs_testbd_createcfg()
27 path, (void*)bdcfg, bdcfg->erase_value, bdcfg->erase_cycles, in lfs_testbd_createcfg()
28 bdcfg->badblock_behavior, bdcfg->power_cycles, in lfs_testbd_createcfg()
29 bdcfg->buffer, bdcfg->wear_buffer); in lfs_testbd_createcfg()
30 lfs_testbd_t *bd = cfg->context; in lfs_testbd_createcfg()
31 bd->cfg = bdcfg; in lfs_testbd_createcfg()
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| /littlefs-2.7.6/tests/ |
| D | test_exhaustion.toml | 167 # These are a sort of high-level litmus test for wear-leveling. One definition
168 # of wear-leveling is that increasing a block device's space translates directly
172 [[case]] # wear-level test running a filesystem to exhaustion
260 // check we increased the lifetime by 2x with ~10% error
264 [[case]] # wear-level test + expanding superblock
349 // check we increased the lifetime by 2x with ~10% error
432 lfs_testbd_wear_t minwear = -1;
438 printf("%08x: wear %d\n", b, wear);
458 lfs_testbd_swear_t diff = wear - avgwear;
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