mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
synced 2025-11-01 16:14:13 +01:00
d88f0ac02f
As a copy-on-write filesystem, the truncate function is a very nice function to have, as it can take advantage of reusing the data already written out to disk.
134 lines
4.3 KiB
Bash
Executable File
134 lines
4.3 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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truncate_test() {
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STARTSIZES="$1"
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HOTSIZES="$2"
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COLDSIZES="$3"
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tests/test.py << TEST
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static const lfs_off_t startsizes[] = {$STARTSIZES};
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static const lfs_off_t hotsizes[] = {$HOTSIZES};
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lfs_mount(&lfs, &cfg) => 0;
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for (int i = 0; i < sizeof(startsizes)/sizeof(startsizes[0]); i++) {
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sprintf((char*)buffer, "hairyhead%d", i);
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lfs_file_open(&lfs, &file[0], (const char*)buffer,
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LFS_O_WRONLY | LFS_O_CREAT | LFS_O_TRUNC) => 0;
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strcpy((char*)buffer, "hair");
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size = strlen((char*)buffer);
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for (int j = 0; j < startsizes[i]; j += size) {
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lfs_file_write(&lfs, &file[0], buffer, size) => size;
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}
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lfs_file_size(&lfs, &file[0]) => startsizes[i];
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lfs_file_truncate(&lfs, &file[0], hotsizes[i]) => 0;
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lfs_file_size(&lfs, &file[0]) => hotsizes[i];
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lfs_file_close(&lfs, &file[0]) => 0;
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}
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lfs_unmount(&lfs) => 0;
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TEST
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tests/test.py << TEST
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static const lfs_off_t startsizes[] = {$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 (int 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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int 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 (int 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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int 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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" 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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"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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" 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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"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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