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Date: Tue, 20 Nov 2018 19:02:04 -0500
From: Gabriel Krisman Bertazi <krisman@...labora.com>
To: tytso@....edu
Cc: kernel@...labora.com, linux-ext4@...r.kernel.org,
Gabriel Krisman Bertazi <krisman@...labora.co.uk>
Subject: [PATCH v2 6/8] debugfs/htree: Support encoding when printing the file hash
From: Gabriel Krisman Bertazi <krisman@...labora.co.uk>
Implement two parameters -e and -c, to specify encoding and casefold
when printing the hash of a given file.
Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.co.uk>
---
debugfs/htree.c | 24 +++++++++++++++++++-----
lib/ext2fs/Makefile.in | 2 +-
2 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/debugfs/htree.c b/debugfs/htree.c
index 51ae3fa94cc8..afa297e65a85 100644
--- a/debugfs/htree.c
+++ b/debugfs/htree.c
@@ -27,6 +27,8 @@ extern char *optarg;
#include "uuid/uuid.h"
#include "e2p/e2p.h"
+#include "ext2fs/nls.h"
+
static FILE *pager;
static void htree_dump_leaf_node(ext2_filsys fs, ext2_ino_t ino,
@@ -44,6 +46,7 @@ static void htree_dump_leaf_node(ext2_filsys fs, ext2_ino_t ino,
ext2_dirhash_t hash, minor_hash;
unsigned int rec_len;
int hash_alg;
+ int hash_flags = inode->i_flags & EXT4_CASEFOLD_FL;
int csum_size = 0;
if (ext2fs_has_feature_metadata_csum(fs->super))
@@ -89,8 +92,8 @@ static void htree_dump_leaf_node(ext2_filsys fs, ext2_ino_t ino,
}
strncpy(name, dirent->name, thislen);
name[thislen] = '\0';
- errcode = ext2fs_dirhash(NULL, hash_alg, 0, name,
- thislen, fs->super->s_hash_seed,
+ errcode = ext2fs_dirhash(fs->encoding, hash_alg, hash_flags,
+ name, thislen, fs->super->s_hash_seed,
&hash, &minor_hash);
if (errcode)
com_err("htree_dump_leaf_node", errcode,
@@ -306,11 +309,12 @@ errout:
void do_dx_hash(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
void *infop EXT2FS_ATTR((unused)))
{
- ext2_dirhash_t hash, minor_hash;
+ ext2_dirhash_t hash, minor_hash, hash_flags;
errcode_t err;
int c;
int hash_version = 0;
__u32 hash_seed[4];
+ const struct nls_table *encoding;
hash_seed[0] = hash_seed[1] = hash_seed[2] = hash_seed[3] = 0;
@@ -329,6 +333,15 @@ void do_dx_hash(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
return;
}
break;
+ case 'c':
+ hash_flags = EXT4_CASEFOLD_FL;
+ break;
+ case 'e':
+ encoding = nls_load_table(optarg);
+ if (!encoding)
+ fprintf(stderr, "Invalid encoding: %s\n",
+ optarg);
+ return;
default:
goto print_usage;
}
@@ -336,10 +349,11 @@ void do_dx_hash(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
if (optind != argc-1) {
print_usage:
com_err(argv[0], 0, "usage: dx_hash [-h hash_alg] "
- "[-s hash_seed] filename");
+ "[-s hash_seed] [-c] [-e encoding] filename");
return;
}
- err = ext2fs_dirhash(NULL, hash_version, 0, argv[optind],
+
+ err = ext2fs_dirhash(encoding, hash_version, hash_flags, argv[optind],
strlen(argv[optind]), hash_seed, &hash,
&minor_hash);
if (err) {
diff --git a/lib/ext2fs/Makefile.in b/lib/ext2fs/Makefile.in
index b756bbdf35a5..78c54d1a09de 100644
--- a/lib/ext2fs/Makefile.in
+++ b/lib/ext2fs/Makefile.in
@@ -1299,7 +1299,7 @@ htree.o: $(top_srcdir)/debugfs/htree.c $(top_builddir)/lib/config.h \
$(srcdir)/hashmap.h $(srcdir)/bitops.h \
$(top_srcdir)/debugfs/../misc/create_inode.h $(top_srcdir)/lib/e2p/e2p.h \
$(top_srcdir)/lib/support/quotaio.h $(top_srcdir)/lib/support/dqblk_v2.h \
- $(top_srcdir)/lib/support/quotaio_tree.h
+ $(top_srcdir)/lib/support/quotaio_tree.h $(srcdir)/nls.h
unused.o: $(top_srcdir)/debugfs/unused.c $(top_builddir)/lib/config.h \
$(top_builddir)/lib/dirpaths.h $(top_srcdir)/debugfs/debugfs.h \
$(top_srcdir)/lib/ss/ss.h $(top_builddir)/lib/ss/ss_err.h \
--
2.19.1
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