cmd_kill_btree_node.c

This factors out cmd_kill_btree_node into its own file - it was in
cmd_list_journal.c, which wsa rather silly.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 0 insertions, 107 deletions

diff --git a/cmd_list_journal.c b/cmd_list_journal.c
index 869d3341..0836ebfc 100644
--- a/cmd_list_journal.c
+++ b/cmd_list_journal.c
@@ -5,7 +5,6 @@
 
 #include "cmds.h"
 #include "libbcachefs.h"
-#include "qcow2.h"
 #include "tools-util.h"
 
 #include "libbcachefs/bcachefs.h"
@@ -138,109 +137,3 @@ int cmd_list_journal(int argc, char *argv[])
 	bch2_fs_stop(c);
 	return 0;
 }
-
-static void kill_btree_node_usage(void)
-{
-	puts("bcachefs kill_btree_node - make btree nodes unreadable\n"
-	     "Usage: bcachefs kill_btree_node [OPTION]... <devices>\n"
-	     "\n"
-	     "Options:\n"
-	     "  -b (extents|inodes|dirents|xattrs)    Btree to delete from\n"
-	     "  -l level                              Levle to delete from (0 == leaves)\n"
-	     "  -i index                              Index of btree node to kill\n"
-	     "  -h                                    Display this help and exit\n"
-	     "Report bugs to <linux-bcachefs@vger.kernel.org>");
-}
-
-int cmd_kill_btree_node(int argc, char *argv[])
-{
-	struct bch_opts opts = bch2_opts_empty();
-	enum btree_id btree_id = 0;
-	unsigned level = 0;
-	u64 node_index = 0;
-	int opt;
-
-	opt_set(opts, read_only,	true);
-
-	while ((opt = getopt(argc, argv, "b:l:i:h")) != -1)
-		switch (opt) {
-		case 'b':
-			btree_id = read_string_list_or_die(optarg,
-						bch2_btree_ids, "btree id");
-			break;
-		case 'l':
-			if (kstrtouint(optarg, 10, &level) || level >= BTREE_MAX_DEPTH)
-				die("invalid level");
-			break;
-		case 'i':
-			if (kstrtoull(optarg, 10, &node_index))
-				die("invalid index %s", optarg);
-			break;
-		case 'h':
-			kill_btree_node_usage();
-			exit(EXIT_SUCCESS);
-		}
-	args_shift(optind);
-
-	if (!argc)
-		die("Please supply device(s)");
-
-	struct bch_fs *c = bch2_fs_open(argv, argc, opts);
-	if (IS_ERR(c))
-		die("error opening %s: %s", argv[0], strerror(-PTR_ERR(c)));
-
-	struct btree_trans trans;
-	struct btree_iter iter;
-	struct btree *b;
-	int ret;
-	void *zeroes;
-
-	ret = posix_memalign(&zeroes, c->opts.block_size, c->opts.block_size);
-	if (ret)
-		die("error %s from posix_memalign", strerror(ret));
-
-	bch2_trans_init(&trans, c, 0, 0);
-
-	__for_each_btree_node(&trans, iter, btree_id, POS_MIN, 0, level, 0, b, ret) {
-		if (b->c.level != level)
-			continue;
-
-		if (!node_index) {
-			struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(bkey_i_to_s_c(&b->key));
-			const struct bch_extent_ptr *ptr;
-
-			struct printbuf buf = PRINTBUF;
-
-			bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&b->key));
-			bch_info(c, "killing btree node %s", buf.buf);
-			printbuf_exit(&buf);
-
-			bkey_for_each_ptr(ptrs, ptr) {
-				struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
-
-				ret = pwrite(ca->disk_sb.bdev->bd_fd, zeroes,
-					     c->opts.block_size, ptr->offset << 9);
-				if (ret != c->opts.block_size) {
-					bch_err(c, "pwrite error: expected %u got %i %s",
-						c->opts.block_size, ret, strerror(errno));
-					ret = EXIT_FAILURE;
-					goto done;
-				}
-			}
-			goto done;
-		}
-
-		node_index--;
-	}
-	if (ret)
-		bch_err(c, "error %i walking btree nodes", ret);
-	else
-		bch_err(c, "node at specified index not found");
-	ret = EXIT_FAILURE;
-done:
-	bch2_trans_iter_exit(&trans, &iter);
-	bch2_trans_exit(&trans);
-
-	bch2_fs_stop(c);
-	return ret;
-}