mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
synced 2025-10-31 16:14:16 +01:00
8bf45c3a29
The problem was not setting the file state correctly after the truncate. To truncate < size, we end up using the cache to traverse the ctz skip-list far away from where our file->pos is. We can leave the last block in the cache in case we're going to append to the file, but if we do this we need to set up file->block+file->off to tell use where we are in the file, and set the LFS_F_READING flag to indicate that our cache contains read data. Note this is different than the LFS_F_DIRTY, which we need also. The purpose of the flags are as follows: - LFS_F_DIRTY - file ctz skip-list branch is out of sync with filesystem, need to update metadata - LFS_F_READING - file cache is in use for reading, need to drop cache - LFS_F_WRITING - file cache is in use for writing, need to write out cache to disk The difference between flags is subtle but important because read/prog caches are handled differently. Prog caches have asserts in place to catch programs without erases (the infamous pcache->block == 0xffffffff assert). Though maybe the names deserve an update... Found by ebinans
303 lines
10 KiB
Bash
Executable File
303 lines
10 KiB
Bash
Executable File
#!/bin/bash
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set -eu
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SMALLSIZE=32
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MEDIUMSIZE=2048
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LARGESIZE=8192
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echo "=== Truncate tests ==="
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rm -rf blocks
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tests/test.py << TEST
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lfs_format(&lfs, &cfg) => 0;
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TEST
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echo "--- Simple truncate ---"
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldynoop",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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strcpy((char*)buffer, "hair");
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size = strlen((char*)buffer);
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for (lfs_off_t j = 0; j < $LARGESIZE; j += size) {
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lfs_file_write(&lfs, &file[0], buffer, size) => size;
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}
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lfs_file_size(&lfs, &file[0]) => $LARGESIZE;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldynoop", LFS_O_RDWR) => 0;
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lfs_file_size(&lfs, &file[0]) => $LARGESIZE;
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lfs_file_truncate(&lfs, &file[0], $MEDIUMSIZE) => 0;
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lfs_file_size(&lfs, &file[0]) => $MEDIUMSIZE;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldynoop", LFS_O_RDONLY) => 0;
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lfs_file_size(&lfs, &file[0]) => $MEDIUMSIZE;
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size = strlen("hair");
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for (lfs_off_t j = 0; j < $MEDIUMSIZE; j += size) {
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lfs_file_read(&lfs, &file[0], buffer, size) => size;
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memcmp(buffer, "hair", size) => 0;
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}
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lfs_file_read(&lfs, &file[0], buffer, size) => 0;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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echo "--- Truncate and read ---"
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldyread",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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strcpy((char*)buffer, "hair");
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size = strlen((char*)buffer);
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for (lfs_off_t j = 0; j < $LARGESIZE; j += size) {
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lfs_file_write(&lfs, &file[0], buffer, size) => size;
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}
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lfs_file_size(&lfs, &file[0]) => $LARGESIZE;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldyread", LFS_O_RDWR) => 0;
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lfs_file_size(&lfs, &file[0]) => $LARGESIZE;
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lfs_file_truncate(&lfs, &file[0], $MEDIUMSIZE) => 0;
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lfs_file_size(&lfs, &file[0]) => $MEDIUMSIZE;
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size = strlen("hair");
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for (lfs_off_t j = 0; j < $MEDIUMSIZE; j += size) {
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lfs_file_read(&lfs, &file[0], buffer, size) => size;
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memcmp(buffer, "hair", size) => 0;
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}
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lfs_file_read(&lfs, &file[0], buffer, size) => 0;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldyread", LFS_O_RDONLY) => 0;
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lfs_file_size(&lfs, &file[0]) => $MEDIUMSIZE;
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size = strlen("hair");
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for (lfs_off_t j = 0; j < $MEDIUMSIZE; j += size) {
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lfs_file_read(&lfs, &file[0], buffer, size) => size;
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memcmp(buffer, "hair", size) => 0;
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}
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lfs_file_read(&lfs, &file[0], buffer, size) => 0;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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echo "--- Truncate and write ---"
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldywrite",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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strcpy((char*)buffer, "hair");
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size = strlen((char*)buffer);
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for (lfs_off_t j = 0; j < $LARGESIZE; j += size) {
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lfs_file_write(&lfs, &file[0], buffer, size) => size;
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}
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lfs_file_size(&lfs, &file[0]) => $LARGESIZE;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldywrite", LFS_O_RDWR) => 0;
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lfs_file_size(&lfs, &file[0]) => $LARGESIZE;
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lfs_file_truncate(&lfs, &file[0], $MEDIUMSIZE) => 0;
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lfs_file_size(&lfs, &file[0]) => $MEDIUMSIZE;
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strcpy((char*)buffer, "bald");
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size = strlen((char*)buffer);
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for (lfs_off_t j = 0; j < $MEDIUMSIZE; j += size) {
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lfs_file_write(&lfs, &file[0], buffer, size) => size;
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}
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lfs_file_size(&lfs, &file[0]) => $MEDIUMSIZE;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_file_open(&lfs, &file[0], "baldywrite", LFS_O_RDONLY) => 0;
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lfs_file_size(&lfs, &file[0]) => $MEDIUMSIZE;
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size = strlen("bald");
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for (lfs_off_t j = 0; j < $MEDIUMSIZE; j += size) {
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lfs_file_read(&lfs, &file[0], buffer, size) => size;
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memcmp(buffer, "bald", size) => 0;
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}
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lfs_file_read(&lfs, &file[0], buffer, size) => 0;
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lfs_file_close(&lfs, &file[0]) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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# More aggressive general truncation tests
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truncate_test() {
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STARTSIZES="$1"
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STARTSEEKS="$2"
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HOTSIZES="$3"
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COLDSIZES="$4"
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tests/test.py << TEST
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static const lfs_off_t startsizes[] = {$STARTSIZES};
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static const lfs_off_t startseeks[] = {$STARTSEEKS};
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static const lfs_off_t hotsizes[] = {$HOTSIZES};
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lfs_mount(&lfs, &cfg) => 0;
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for (unsigned i = 0; i < sizeof(startsizes)/sizeof(startsizes[0]); i++) {
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sprintf((char*)buffer, "hairyhead%d", i);
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lfs_file_open(&lfs, &file[0], (const char*)buffer,
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LFS_O_WRONLY | LFS_O_CREAT | LFS_O_TRUNC) => 0;
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strcpy((char*)buffer, "hair");
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size = strlen((char*)buffer);
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for (lfs_off_t j = 0; j < startsizes[i]; j += size) {
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lfs_file_write(&lfs, &file[0], buffer, size) => size;
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}
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lfs_file_size(&lfs, &file[0]) => startsizes[i];
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if (startseeks[i] != startsizes[i]) {
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lfs_file_seek(&lfs, &file[0],
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startseeks[i], LFS_SEEK_SET) => startseeks[i];
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}
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lfs_file_truncate(&lfs, &file[0], hotsizes[i]) => 0;
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lfs_file_size(&lfs, &file[0]) => hotsizes[i];
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lfs_file_close(&lfs, &file[0]) => 0;
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}
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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static const lfs_off_t startsizes[] = {$STARTSIZES};
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static const lfs_off_t hotsizes[] = {$HOTSIZES};
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static const lfs_off_t coldsizes[] = {$COLDSIZES};
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lfs_mount(&lfs, &cfg) => 0;
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for (unsigned i = 0; i < sizeof(startsizes)/sizeof(startsizes[0]); i++) {
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sprintf((char*)buffer, "hairyhead%d", i);
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lfs_file_open(&lfs, &file[0], (const char*)buffer, LFS_O_RDWR) => 0;
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lfs_file_size(&lfs, &file[0]) => hotsizes[i];
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size = strlen("hair");
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lfs_off_t j = 0;
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for (; j < startsizes[i] && j < hotsizes[i]; j += size) {
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lfs_file_read(&lfs, &file[0], buffer, size) => size;
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memcmp(buffer, "hair", size) => 0;
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}
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for (; j < hotsizes[i]; j += size) {
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lfs_file_read(&lfs, &file[0], buffer, size) => size;
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memcmp(buffer, "\0\0\0\0", size) => 0;
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}
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lfs_file_truncate(&lfs, &file[0], coldsizes[i]) => 0;
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lfs_file_size(&lfs, &file[0]) => coldsizes[i];
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lfs_file_close(&lfs, &file[0]) => 0;
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}
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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static const lfs_off_t startsizes[] = {$STARTSIZES};
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static const lfs_off_t hotsizes[] = {$HOTSIZES};
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static const lfs_off_t coldsizes[] = {$COLDSIZES};
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lfs_mount(&lfs, &cfg) => 0;
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for (unsigned i = 0; i < sizeof(startsizes)/sizeof(startsizes[0]); i++) {
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sprintf((char*)buffer, "hairyhead%d", i);
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lfs_file_open(&lfs, &file[0], (const char*)buffer, LFS_O_RDONLY) => 0;
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lfs_file_size(&lfs, &file[0]) => coldsizes[i];
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size = strlen("hair");
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lfs_off_t j = 0;
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for (; j < startsizes[i] && j < hotsizes[i] && j < coldsizes[i];
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j += size) {
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lfs_file_read(&lfs, &file[0], buffer, size) => size;
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memcmp(buffer, "hair", size) => 0;
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}
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for (; j < coldsizes[i]; j += size) {
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lfs_file_read(&lfs, &file[0], buffer, size) => size;
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memcmp(buffer, "\0\0\0\0", size) => 0;
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}
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lfs_file_close(&lfs, &file[0]) => 0;
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}
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lfs_unmount(&lfs) => 0;
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TEST
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}
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echo "--- Cold shrinking truncate ---"
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truncate_test \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE" \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE" \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE" \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE"
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echo "--- Cold expanding truncate ---"
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truncate_test \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE" \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE" \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE" \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE"
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echo "--- Warm shrinking truncate ---"
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truncate_test \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE" \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE" \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE" \
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" 0, 0, 0, 0, 0"
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echo "--- Warm expanding truncate ---"
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truncate_test \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE" \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE" \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE" \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE"
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echo "--- Mid-file shrinking truncate ---"
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truncate_test \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE" \
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" $LARGESIZE, $LARGESIZE, $LARGESIZE, $LARGESIZE, $LARGESIZE" \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE" \
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" 0, 0, 0, 0, 0"
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echo "--- Mid-file expanding truncate ---"
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truncate_test \
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" 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE, 2*$LARGESIZE" \
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" 0, 0, $SMALLSIZE, $MEDIUMSIZE, $LARGESIZE" \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE" \
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"2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE, 2*$LARGESIZE"
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echo "--- Results ---"
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tests/stats.py
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