mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
synced 2025-10-31 16:14:16 +01:00
Fixed issues with neighbor updates during moves
The root of the problem was some assumptions about what tags could be sent to lfs_dir_commit. - The first assumption is that there could be only one splice (create/delete) tag at a time, which is trivially broken by the core commit in lfs_rename. - The second assumption is that there is at most one create and one delete in a single commit. This is less obvious but turns out to not be true in the case that we rename a file such that it overwrites another file in the same directory (1 delete for source file, 1 delete for destination). - The third assumption was that there was an ordering to the delete/creates passed to lfs_dir_commit. It may be possible to force all deletes to follow creates by rearranging the tags in lfs_rename, but this risks overflowing tag ids. The way the lfs_dir_commit first collected the "deletetag" and "createtag" broke all three of these assumptions. And because we lose the ordering information we can no longer apply the directory changes to open files correctly. The file ids may be shifted in a way that doesn't reflect the actual operations on disk. These problems were made worst by lfs_dir_commit cleaning up moves implicitly, which also creates deletes implicitly. While cleaning up moves in lfs_dir_commit may save some code size, it makes the commit logic much more difficult to implement correctly. This bug turned into pulling out a dead tree stump, roots and all. I ended up reworking how lfs_dir_commit updates open files so that it has less assumptions, now it just traverses the commit tags multiple times in order to update file ids after a successful commit in the correct order. This also got rid of the dir copy by carefully updating split dirs after all files have an up-to-date copy of the original dir. I also just removed the implicit move cleanup. It turns out the only commits that can occur before we have cleaned up the move is in lfs_fs_relocate, so it was simple enough to explicitly handle this case when we update our parent and pred during a relocate. Cases where we may need to fix moves: - In lfs_rename when we move a file/dir - In lfs_demove if we lose power - In lfs_fs_relocate if we have to relocate our parent and we find it had a pending move (or else the move will be outdated) - In lfs_fs_relocate if we have to relocate our predecessor and we find it had a pending move (or else the move will be outdated) Note the two cases in lfs_fs_relocate may be recursive. But lfs_fs_relocate can only trigger other lfs_fs_relocates so it's not possible for pending moves to spill out into other filesystem commits And of couse, I added several tests to cover these situations. Hopefully the rename-with-open-files logic should be fairly locked down now. found with initial fix by eastmoutain
This commit is contained in:
Christopher Haster
@@ -349,7 +349,7 @@ code = '''
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assert(strcmp(info.name, "hello") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 5+8+6);
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count += 1;
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count += 1;
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}
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if (lfs_stat(&lfs, "c/hello", &info) == 0) {
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assert(strcmp(info.name, "hello") == 0);
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@@ -375,6 +375,7 @@ code = '''
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lfs_rename(&lfs, "c/hello", "d/hello") => 0;
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} else if (lfs_stat(&lfs, "d/hello", &info) == 0) {
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// success
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lfs_unmount(&lfs) => 0;
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break;
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} else {
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// create file
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@@ -807,7 +808,7 @@ code = '''
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if (lfs_stat(&lfs, "b/hi", &info) == 0) {
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assert(strcmp(info.name, "hi") == 0);
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assert(info.type == LFS_TYPE_DIR);
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count += 1;
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count += 1;
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}
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if (lfs_stat(&lfs, "c/hi", &info) == 0) {
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assert(strcmp(info.name, "hi") == 0);
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@@ -830,6 +831,7 @@ code = '''
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} else if (lfs_stat(&lfs, "c/hi", &info) == 0) {
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lfs_rename(&lfs, "c/hi", "d/hi") => 0;
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} else if (lfs_stat(&lfs, "d/hi", &info) == 0) {
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lfs_unmount(&lfs) => 0;
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break; // success
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} else {
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// create dir and rename for atomicity
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@@ -955,3 +957,839 @@ code = '''
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lfs_file_close(&lfs, &file) => 0;
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lfs_unmount(&lfs) => 0;
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'''
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# Other specific corner cases
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[[case]] # create + delete in same commit with neighbors
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code = '''
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lfs_format(&lfs, &cfg) => 0;
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lfs_mount(&lfs, &cfg) => 0;
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// littlefs keeps files sorted, so we know the order these will be in
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lfs_file_open(&lfs, &file, "/1.move_me",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/0.before",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_write(&lfs, &file, "test.1", 7) => 7;
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/2.in_between",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_write(&lfs, &file, "test.2", 7) => 7;
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/4.after",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_write(&lfs, &file, "test.3", 7) => 7;
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_t files[3];
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lfs_file_open(&lfs, &files[0], "0.before",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_open(&lfs, &files[1], "2.in_between",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_open(&lfs, &files[2], "4.after",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_write(&lfs, &files[0], "test.4", 7) => 7;
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lfs_file_write(&lfs, &files[1], "test.5", 7) => 7;
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lfs_file_write(&lfs, &files[2], "test.6", 7) => 7;
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// rename file while everything is open, this triggers both
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// a create and delete simultaneously
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lfs_rename(&lfs, "/1.move_me", "/3.move_me") => 0;
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lfs_file_close(&lfs, &files[0]) => 0;
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lfs_file_close(&lfs, &files[1]) => 0;
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lfs_file_close(&lfs, &files[2]) => 0;
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// check that nothing was corrupted
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lfs_dir_open(&lfs, &dir, "/") => 0;
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, ".") == 0);
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assert(info.type == LFS_TYPE_DIR);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "..") == 0);
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assert(info.type == LFS_TYPE_DIR);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "0.before") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "2.in_between") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "3.move_me") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 0);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "4.after") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 0;
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lfs_dir_close(&lfs, &dir) => 0;
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lfs_file_open(&lfs, &file, "/0.before", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.4") == 0);
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/2.in_between", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.5") == 0);
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/4.after", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.6") == 0);
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lfs_file_close(&lfs, &file) => 0;
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// now move back
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lfs_file_open(&lfs, &files[0], "0.before",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_open(&lfs, &files[1], "2.in_between",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_open(&lfs, &files[2], "4.after",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_write(&lfs, &files[0], "test.7", 7) => 7;
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lfs_file_write(&lfs, &files[1], "test.8", 7) => 7;
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lfs_file_write(&lfs, &files[2], "test.9", 7) => 7;
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// rename file while everything is open, this triggers both
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// a create and delete simultaneously
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lfs_rename(&lfs, "/3.move_me", "/1.move_me") => 0;
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lfs_file_close(&lfs, &files[0]) => 0;
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lfs_file_close(&lfs, &files[1]) => 0;
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lfs_file_close(&lfs, &files[2]) => 0;
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// and check that nothing was corrupted again
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lfs_dir_open(&lfs, &dir, "/") => 0;
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, ".") == 0);
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assert(info.type == LFS_TYPE_DIR);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "..") == 0);
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assert(info.type == LFS_TYPE_DIR);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "0.before") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "1.move_me") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 0);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "2.in_between") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "4.after") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 0;
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lfs_dir_close(&lfs, &dir) => 0;
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lfs_file_open(&lfs, &file, "/0.before", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.7") == 0);
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/2.in_between", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.8") == 0);
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/4.after", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.9") == 0);
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lfs_file_close(&lfs, &file) => 0;
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lfs_unmount(&lfs) => 0;
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'''
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# Other specific corner cases
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[[case]] # create + delete + delete in same commit with neighbors
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code = '''
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lfs_format(&lfs, &cfg) => 0;
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lfs_mount(&lfs, &cfg) => 0;
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// littlefs keeps files sorted, so we know the order these will be in
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lfs_file_open(&lfs, &file, "/1.move_me",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/3.move_me",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_write(&lfs, &file, "remove me",
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sizeof("remove me")) => sizeof("remove me");
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/0.before",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_write(&lfs, &file, "test.1", 7) => 7;
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/2.in_between",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_write(&lfs, &file, "test.2", 7) => 7;
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/4.after",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_write(&lfs, &file, "test.3", 7) => 7;
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_t files[3];
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lfs_file_open(&lfs, &files[0], "0.before",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_open(&lfs, &files[1], "2.in_between",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_open(&lfs, &files[2], "4.after",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_write(&lfs, &files[0], "test.4", 7) => 7;
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lfs_file_write(&lfs, &files[1], "test.5", 7) => 7;
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lfs_file_write(&lfs, &files[2], "test.6", 7) => 7;
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// rename file while everything is open, this triggers both
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// a create and delete simultaneously
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lfs_rename(&lfs, "/1.move_me", "/3.move_me") => 0;
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lfs_file_close(&lfs, &files[0]) => 0;
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lfs_file_close(&lfs, &files[1]) => 0;
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lfs_file_close(&lfs, &files[2]) => 0;
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// check that nothing was corrupted
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lfs_dir_open(&lfs, &dir, "/") => 0;
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, ".") == 0);
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assert(info.type == LFS_TYPE_DIR);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "..") == 0);
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assert(info.type == LFS_TYPE_DIR);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "0.before") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "2.in_between") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "3.move_me") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 0);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "4.after") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 0;
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lfs_dir_close(&lfs, &dir) => 0;
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lfs_file_open(&lfs, &file, "/0.before", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.4") == 0);
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/2.in_between", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.5") == 0);
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &file, "/4.after", LFS_O_RDONLY) => 0;
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lfs_file_read(&lfs, &file, buffer, 7) => 7;
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assert(strcmp((char*)buffer, "test.6") == 0);
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lfs_file_close(&lfs, &file) => 0;
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// now move back
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lfs_file_open(&lfs, &file, "/1.move_me",
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LFS_O_WRONLY | LFS_O_CREAT) => 0;
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lfs_file_write(&lfs, &file, "remove me",
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sizeof("remove me")) => sizeof("remove me");
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lfs_file_close(&lfs, &file) => 0;
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lfs_file_open(&lfs, &files[0], "0.before",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_open(&lfs, &files[1], "2.in_between",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_open(&lfs, &files[2], "4.after",
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LFS_O_WRONLY | LFS_O_TRUNC) => 0;
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lfs_file_write(&lfs, &files[0], "test.7", 7) => 7;
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lfs_file_write(&lfs, &files[1], "test.8", 7) => 7;
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lfs_file_write(&lfs, &files[2], "test.9", 7) => 7;
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// rename file while everything is open, this triggers both
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// a create and delete simultaneously
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lfs_rename(&lfs, "/3.move_me", "/1.move_me") => 0;
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lfs_file_close(&lfs, &files[0]) => 0;
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lfs_file_close(&lfs, &files[1]) => 0;
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lfs_file_close(&lfs, &files[2]) => 0;
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// and check that nothing was corrupted again
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lfs_dir_open(&lfs, &dir, "/") => 0;
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, ".") == 0);
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assert(info.type == LFS_TYPE_DIR);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "..") == 0);
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assert(info.type == LFS_TYPE_DIR);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "0.before") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 7);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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assert(strcmp(info.name, "1.move_me") == 0);
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assert(info.type == LFS_TYPE_REG);
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assert(info.size == 0);
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lfs_dir_read(&lfs, &dir, &info) => 1;
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||||
assert(strcmp(info.name, "2.in_between") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "4.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.7") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/2.in_between", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.8") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/4.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.9") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_unmount(&lfs) => 0;
|
||||
'''
|
||||
|
||||
[[case]] # create + delete in different dirs with neighbors
|
||||
code = '''
|
||||
lfs_format(&lfs, &cfg) => 0;
|
||||
lfs_mount(&lfs, &cfg) => 0;
|
||||
|
||||
// littlefs keeps files sorted, so we know the order these will be in
|
||||
lfs_mkdir(&lfs, "/dir.1") => 0;
|
||||
lfs_mkdir(&lfs, "/dir.2") => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.1/1.move_me",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.2/1.move_me",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "remove me",
|
||||
sizeof("remove me")) => sizeof("remove me");
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/dir.1/0.before",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.1", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.1/2.after",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.2", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/dir.2/0.before",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.3", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.2/2.after",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.4", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
lfs_file_t files[4];
|
||||
lfs_file_open(&lfs, &files[0], "/dir.1/0.before",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[1], "/dir.1/2.after",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[2], "/dir.2/0.before",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[3], "/dir.2/2.after",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_write(&lfs, &files[0], "test.5", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[1], "test.6", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[2], "test.7", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[3], "test.8", 7) => 7;
|
||||
|
||||
// rename file while everything is open, this triggers both
|
||||
// a create and delete as it overwrites the destination file
|
||||
lfs_rename(&lfs, "/dir.1/1.move_me", "/dir.2/1.move_me") => 0;
|
||||
|
||||
lfs_file_close(&lfs, &files[0]) => 0;
|
||||
lfs_file_close(&lfs, &files[1]) => 0;
|
||||
lfs_file_close(&lfs, &files[2]) => 0;
|
||||
lfs_file_close(&lfs, &files[3]) => 0;
|
||||
|
||||
// check that nothing was corrupted
|
||||
lfs_dir_open(&lfs, &dir, "/") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "dir.1") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "dir.2") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_dir_open(&lfs, &dir, "/dir.1") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "0.before") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "2.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_dir_open(&lfs, &dir, "/dir.2") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "0.before") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "1.move_me") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 0);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "2.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/dir.1/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.5") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.1/2.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.6") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.2/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.7") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.2/2.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.8") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
// now move back
|
||||
lfs_file_open(&lfs, &file, "/dir.1/1.move_me",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "remove me",
|
||||
sizeof("remove me")) => sizeof("remove me");
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &files[0], "/dir.1/0.before",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[1], "/dir.1/2.after",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[2], "/dir.2/0.before",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[3], "/dir.2/2.after",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_write(&lfs, &files[0], "test.9", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[1], "test.a", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[2], "test.b", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[3], "test.c", 7) => 7;
|
||||
|
||||
// rename file while everything is open, this triggers both
|
||||
// a create and delete simultaneously
|
||||
lfs_rename(&lfs, "/dir.2/1.move_me", "/dir.1/1.move_me") => 0;
|
||||
|
||||
lfs_file_close(&lfs, &files[0]) => 0;
|
||||
lfs_file_close(&lfs, &files[1]) => 0;
|
||||
lfs_file_close(&lfs, &files[2]) => 0;
|
||||
lfs_file_close(&lfs, &files[3]) => 0;
|
||||
|
||||
// and check that nothing was corrupted again
|
||||
lfs_dir_open(&lfs, &dir, "/") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "dir.1") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "dir.2") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_dir_open(&lfs, &dir, "/dir.1") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "0.before") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "1.move_me") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 0);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "2.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_dir_open(&lfs, &dir, "/dir.2") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "0.before") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "2.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/dir.1/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.9") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.1/2.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.a") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.2/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.b") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/dir.2/2.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.c") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_unmount(&lfs) => 0;
|
||||
'''
|
||||
|
||||
[[case]] # move fix in relocation
|
||||
in = "lfs.c"
|
||||
define.RELOCATIONS = 'range(0x3+1)'
|
||||
define.LFS_ERASE_CYCLES = 0xffffffff
|
||||
code = '''
|
||||
lfs_format(&lfs, &cfg) => 0;
|
||||
lfs_mount(&lfs, &cfg) => 0;
|
||||
|
||||
lfs_mkdir(&lfs, "/parent") => 0;
|
||||
lfs_mkdir(&lfs, "/parent/child") => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/parent/1.move_me",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "move me",
|
||||
sizeof("move me")) => sizeof("move me");
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/parent/0.before",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.1", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/2.after",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.2", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/child/0.before",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.3", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/child/2.after",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.4", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
lfs_file_t files[4];
|
||||
lfs_file_open(&lfs, &files[0], "/parent/0.before",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[1], "/parent/2.after",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[2], "/parent/child/0.before",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[3], "/parent/child/2.after",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_write(&lfs, &files[0], "test.5", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[1], "test.6", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[2], "test.7", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[3], "test.8", 7) => 7;
|
||||
|
||||
// force specific directories to relocate
|
||||
if (RELOCATIONS & 0x1) {
|
||||
lfs_dir_open(&lfs, &dir, "/parent");
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[0], 0xffffffff) => 0;
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[1], 0xffffffff) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
}
|
||||
if (RELOCATIONS & 0x2) {
|
||||
lfs_dir_open(&lfs, &dir, "/parent/child");
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[0], 0xffffffff) => 0;
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[1], 0xffffffff) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
}
|
||||
|
||||
// ok, now we move the file, this creates a move that needs to be
|
||||
// fixed, possibly in a metadata-pair that needs to be relocated
|
||||
//
|
||||
// the worst case is if we need to relocate and we need to implicit
|
||||
// fix the move in our parent before it falls out of date
|
||||
lfs_rename(&lfs, "/parent/1.move_me", "/parent/child/1.move_me") => 0;
|
||||
|
||||
lfs_file_close(&lfs, &files[0]) => 0;
|
||||
lfs_file_close(&lfs, &files[1]) => 0;
|
||||
lfs_file_close(&lfs, &files[2]) => 0;
|
||||
lfs_file_close(&lfs, &files[3]) => 0;
|
||||
|
||||
// check that nothing was corrupted
|
||||
lfs_dir_open(&lfs, &dir, "/parent") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "0.before") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "2.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "child") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_dir_open(&lfs, &dir, "/parent/child") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "0.before") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "1.move_me") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == sizeof("move me"));
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "2.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/parent/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.5") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/2.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.6") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/child/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.7") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/child/2.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.8") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_unmount(&lfs) => 0;
|
||||
'''
|
||||
|
||||
[[case]] # move fix in relocation with predecessor
|
||||
in = "lfs.c"
|
||||
define.RELOCATIONS = 'range(0x7+1)'
|
||||
define.LFS_ERASE_CYCLES = 0xffffffff
|
||||
code = '''
|
||||
lfs_format(&lfs, &cfg) => 0;
|
||||
lfs_mount(&lfs, &cfg) => 0;
|
||||
|
||||
lfs_mkdir(&lfs, "/parent") => 0;
|
||||
lfs_mkdir(&lfs, "/parent/child") => 0;
|
||||
lfs_mkdir(&lfs, "/parent/sibling") => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/parent/sibling/1.move_me",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "move me",
|
||||
sizeof("move me")) => sizeof("move me");
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/parent/sibling/0.before",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.1", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/sibling/2.after",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.2", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/child/0.before",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.3", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/child/2.after",
|
||||
LFS_O_WRONLY | LFS_O_CREAT) => 0;
|
||||
lfs_file_write(&lfs, &file, "test.4", 7) => 7;
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
|
||||
lfs_file_t files[4];
|
||||
lfs_file_open(&lfs, &files[0], "/parent/sibling/0.before",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[1], "/parent/sibling/2.after",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[2], "/parent/child/0.before",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_open(&lfs, &files[3], "/parent/child/2.after",
|
||||
LFS_O_WRONLY | LFS_O_TRUNC) => 0;
|
||||
lfs_file_write(&lfs, &files[0], "test.5", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[1], "test.6", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[2], "test.7", 7) => 7;
|
||||
lfs_file_write(&lfs, &files[3], "test.8", 7) => 7;
|
||||
|
||||
// force specific directories to relocate
|
||||
if (RELOCATIONS & 0x1) {
|
||||
lfs_dir_open(&lfs, &dir, "/parent");
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[0], 0xffffffff) => 0;
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[1], 0xffffffff) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
}
|
||||
if (RELOCATIONS & 0x2) {
|
||||
lfs_dir_open(&lfs, &dir, "/parent/sibling");
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[0], 0xffffffff) => 0;
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[1], 0xffffffff) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
}
|
||||
if (RELOCATIONS & 0x4) {
|
||||
lfs_dir_open(&lfs, &dir, "/parent/child");
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[0], 0xffffffff) => 0;
|
||||
lfs_testbd_setwear(&cfg, dir.m.pair[1], 0xffffffff) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
}
|
||||
|
||||
// ok, now we move the file, this creates a move that needs to be
|
||||
// fixed, possibly in a metadata-pair that needs to be relocated
|
||||
//
|
||||
// and now relocations can force us to need to fix our move in either
|
||||
// the parent or child before things break
|
||||
lfs_rename(&lfs,
|
||||
"/parent/sibling/1.move_me",
|
||||
"/parent/child/1.move_me") => 0;
|
||||
|
||||
lfs_file_close(&lfs, &files[0]) => 0;
|
||||
lfs_file_close(&lfs, &files[1]) => 0;
|
||||
lfs_file_close(&lfs, &files[2]) => 0;
|
||||
lfs_file_close(&lfs, &files[3]) => 0;
|
||||
|
||||
// check that nothing was corrupted
|
||||
lfs_dir_open(&lfs, &dir, "/parent") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "child") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "sibling") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_dir_open(&lfs, &dir, "/parent/sibling") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "0.before") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "2.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_dir_open(&lfs, &dir, "/parent/child") => 0;
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, ".") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "..") == 0);
|
||||
assert(info.type == LFS_TYPE_DIR);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "0.before") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "1.move_me") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == sizeof("move me"));
|
||||
lfs_dir_read(&lfs, &dir, &info) => 1;
|
||||
assert(strcmp(info.name, "2.after") == 0);
|
||||
assert(info.type == LFS_TYPE_REG);
|
||||
assert(info.size == 7);
|
||||
lfs_dir_read(&lfs, &dir, &info) => 0;
|
||||
lfs_dir_close(&lfs, &dir) => 0;
|
||||
|
||||
lfs_file_open(&lfs, &file, "/parent/sibling/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.5") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/sibling/2.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.6") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/child/0.before", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.7") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_file_open(&lfs, &file, "/parent/child/2.after", LFS_O_RDONLY) => 0;
|
||||
lfs_file_read(&lfs, &file, buffer, 7) => 7;
|
||||
assert(strcmp((char*)buffer, "test.8") == 0);
|
||||
lfs_file_close(&lfs, &file) => 0;
|
||||
lfs_unmount(&lfs) => 0;
|
||||
'''
|
||||
|
||||
Reference in New Issue
Block a user