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Added directory list for synchronizing in flight directories

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As it was, if a user operated on a directory while at the same
time iterating over the directory, the directory objects could
fall out of sync. In the best case, files may be skipped while
removing everything in a file, in the worst case, a very poorly
timed directory relocate could be missed.

Simple fix is to add the same directory tracking that is currently
in use for files, at a small code+complexity cost.
This commit is contained in:
Christopher Haster
2017-11-21 20:53:15 -06:00
parent e169d06c57
commit bf78b09d37
3 changed files with 101 additions and 29 deletions
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tests/test_dirs.sh
+43 -3
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@@ -282,6 +282,49 @@ tests/test.py << TEST
lfs_unmount(&lfs) => 0;
TEST
echo "--- Recursive remove ---"
tests/test.py << TEST
lfs_mount(&lfs, &cfg) => 0;
lfs_remove(&lfs, "coldpotato") => LFS_ERR_INVAL;
lfs_dir_open(&lfs, &dir[0], "coldpotato") => 0;
lfs_dir_read(&lfs, &dir[0], &info) => 1;
lfs_dir_read(&lfs, &dir[0], &info) => 1;
while (true) {
int err = lfs_dir_read(&lfs, &dir[0], &info);
err >= 0 => 1;
if (err == 0) {
break;
}
strcpy((char*)buffer, "coldpotato/");
strcat((char*)buffer, info.name);
lfs_remove(&lfs, (char*)buffer) => 0;
}
lfs_remove(&lfs, "coldpotato") => 0;
TEST
tests/test.py << TEST
lfs_mount(&lfs, &cfg) => 0;
lfs_dir_open(&lfs, &dir[0], "/") => 0;
lfs_dir_read(&lfs, &dir[0], &info) => 1;
strcmp(info.name, ".") => 0;
info.type => LFS_TYPE_DIR;
lfs_dir_read(&lfs, &dir[0], &info) => 1;
strcmp(info.name, "..") => 0;
info.type => LFS_TYPE_DIR;
lfs_dir_read(&lfs, &dir[0], &info) => 1;
strcmp(info.name, "burito") => 0;
info.type => LFS_TYPE_REG;
lfs_dir_read(&lfs, &dir[0], &info) => 1;
strcmp(info.name, "cactus") => 0;
info.type => LFS_TYPE_DIR;
lfs_dir_read(&lfs, &dir[0], &info) => 0;
lfs_dir_close(&lfs, &dir[0]) => 0;
lfs_unmount(&lfs) => 0;
TEST
echo "--- Multi-block remove ---"
tests/test.py << TEST
lfs_mount(&lfs, &cfg) => 0;
@@ -307,9 +350,6 @@ tests/test.py << TEST
lfs_dir_read(&lfs, &dir[0], &info) => 1;
strcmp(info.name, "burito") => 0;
info.type => LFS_TYPE_REG;
lfs_dir_read(&lfs, &dir[0], &info) => 1;
strcmp(info.name, "coldpotato") => 0;
info.type => LFS_TYPE_DIR;
lfs_dir_read(&lfs, &dir[0], &info) => 0;
lfs_dir_close(&lfs, &dir[0]) => 0;
lfs_unmount(&lfs) => 0;