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repart: Shortcut copy if source or target starts with exclude path

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If the source or target we're copying to is a subdirectory of any of the
directories specified in ExcludeFiles= or ExcludeFilesTarget=, shortcut the
entire copy operation.
This commit is contained in:
Daan De Meyer
2024-09-30 13:41:11 +02:00
parent df4d09f78e
commit dc4710ceb2
1 changed files with 8 additions and 0 deletions
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8
src/partition/repart.c
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@@ -5254,6 +5254,9 @@ static int make_copy_files_denylist(
}
STRV_FOREACH(e, override_exclude_src ?: p->exclude_files_source) {
if (path_startswith(source, *e))
return 1;
r = add_exclude_path(*e, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE);
if (r < 0)
return r;
@@ -5262,6 +5265,9 @@ static int make_copy_files_denylist(
STRV_FOREACH(e, override_exclude_tgt ?: p->exclude_files_target) {
_cleanup_free_ char *path = NULL;
if (path_startswith(target, *e))
return 1;
const char *s = path_startswith(*e, target);
if (!s)
continue;
@@ -5492,6 +5498,8 @@ static int do_copy_files(Context *context, Partition *p, const char *root) {
r = make_copy_files_denylist(context, p, *source, *target, &denylist);
if (r < 0)
return r;
if (r > 0)
continue;
r = make_subvolumes_set(p, *source, *target, &subvolumes_by_source_inode);
if (r < 0)