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Date: Thu, 17 Dec 2020 18:35:41 +0100 From: Arnaud Ferraris <arnaud.ferraris@...labora.com> To: linux-ext4@...r.kernel.org Cc: drosen@...gle.com, krisman@...labora.com, ebiggers@...nel.org, tytso@....edu, Arnaud Ferraris <arnaud.ferraris@...labora.com> Subject: [PATCH v3 09/12] e2fsck: Detect duplicated casefolded direntries for rehash From: Gabriel Krisman Bertazi <krisman@...labora.com> On pass2, support casefolded directories when looking for duplicated entries. Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com> Signed-off-by: Arnaud Ferraris <arnaud.ferraris@...labora.com> --- e2fsck/pass2.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/e2fsck/pass2.c b/e2fsck/pass2.c index 153e05f0..f23a3a9c 100644 --- a/e2fsck/pass2.c +++ b/e2fsck/pass2.c @@ -344,6 +344,20 @@ static int dict_de_cmp(const void *cmp_ctx, const void *a, const void *b) return memcmp(de_a->name, de_b->name, a_len); } +static int dict_de_cf_cmp(const void *cmp_ctx, const void *a, const void *b) +{ + const struct ext2fs_nls_table *tbl = cmp_ctx; + const struct ext2_dir_entry *de_a, *de_b; + int a_len, b_len; + + de_a = (const struct ext2_dir_entry *) a; + a_len = ext2fs_dirent_name_len(de_a); + de_b = (const struct ext2_dir_entry *) b; + b_len = ext2fs_dirent_name_len(de_b); + + return ext2fs_casefold_cmp(tbl, de_a->name, a_len, de_b->name, b_len); +} + /* * This is special sort function that makes sure that directory blocks * with a dirblock of zero are sorted to the beginning of the list. @@ -1255,7 +1269,13 @@ skip_checksum: dir_encpolicy_id = find_encryption_policy(ctx, ino); - dict_init(&de_dict, DICTCOUNT_T_MAX, dict_de_cmp); + if (cf_dir) { + dict_init(&de_dict, DICTCOUNT_T_MAX, dict_de_cf_cmp); + dict_set_cmp_context(&de_dict, (void *)ctx->fs->encoding); + } else { + dict_init(&de_dict, DICTCOUNT_T_MAX, dict_de_cmp); + } + prev = 0; do { dgrp_t group; -- 2.29.2
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