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bfs: CheckVisitor only deletes nodes on specific errors

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* This should prevent erroneously deleting any files in low memory
  situations.

Change-Id: I21b1d042e5f7e03a5abfaaa567b6c679b95e3188
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2914
Reviewed-by: Adrien Destugues <[email protected]>
This commit is contained in:
Axel Dörfler
2020-06-20 18:10:03 +00:00
committed by waddlesplash
parent 93845aec95
commit 2d4d531731
1 changed files with 15 additions and 8 deletions
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src/add-ons/kernel/file_systems/bfs/CheckVisitor.cpp
+15 -8
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@@ -336,7 +336,8 @@ status_t
CheckVisitor::OpenInodeFailed(status_t reason, ino_t id, Inode* parent,
char* treeName, TreeIterator* iterator)
{
FATAL(("Could not open inode at %" B_PRIdOFF "\n", id));
FATAL(("Could not open inode at %" B_PRIdOFF ": %s\n", id,
strerror(reason)));
if (treeName != NULL)
strlcpy(Control().name, treeName, B_FILE_NAME_LENGTH);
@@ -346,13 +347,19 @@ CheckVisitor::OpenInodeFailed(status_t reason, ino_t id, Inode* parent,
Control().inode = id;
Control().errors = BFS_COULD_NOT_OPEN;
// remove inode from the tree if we can
if (parent != NULL && iterator != NULL
&& (Control().flags & BFS_REMOVE_INVALID) != 0) {
Control().status = _RemoveInvalidNode(parent, iterator->Tree(), NULL,
treeName);
} else
Control().status = B_ERROR;
// TODO: check other error codes; B_IO_ERROR might be a temporary
// issue, so it should be guarded by a force mode
if (reason == B_BAD_VALUE || reason == B_BAD_DATA || reason == B_IO_ERROR) {
// Remove inode from the tree if we can
if (parent != NULL && iterator != NULL
&& (Control().flags & BFS_REMOVE_INVALID) != 0) {
Control().status = _RemoveInvalidNode(parent, iterator->Tree(),
NULL, treeName);
} else
Control().status = B_ERROR;
} else {
Control().status = B_OK;
}
return B_OK;
}