From: Zheng Liu Subject: [PATCH v3 08/30] debugfs: dump all extended attributes Date: Fri, 6 Dec 2013 17:57:55 +0800 Message-ID: <1386323897-2354-9-git-send-email-wenqing.lz@taobao.com> References: <1386323897-2354-1-git-send-email-wenqing.lz@taobao.com> Cc: Theodore Ts'o , "Darrick J. Wong" , Zheng Liu To: linux-ext4@vger.kernel.org Return-path: Received: from mail-pd0-f181.google.com ([209.85.192.181]:51705 "EHLO mail-pd0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756253Ab3LFJzm (ORCPT ); Fri, 6 Dec 2013 04:55:42 -0500 Received: by mail-pd0-f181.google.com with SMTP id p10so740432pdj.40 for ; Fri, 06 Dec 2013 01:55:41 -0800 (PST) In-Reply-To: <1386323897-2354-1-git-send-email-wenqing.lz@taobao.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: From: "Darrick J. Wong" Use the new extended attribute APIs to display all extended attributes (current code does not look in the EA block) and display full names (current code ignores name index too). Signed-off-by: Darrick J. Wong --- debugfs/debugfs.c | 68 +++++++++++++++++++++++++------------------ tests/r_inline_xattr/expect | 6 ++-- 2 files changed, 42 insertions(+), 32 deletions(-) diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c index 8c32eff..e489f62 100644 --- a/debugfs/debugfs.c +++ b/debugfs/debugfs.c @@ -540,34 +540,45 @@ static void internal_dump_inode_extra(FILE *out, inode->i_extra_isize); return; } - storage_size = EXT2_INODE_SIZE(current_fs->super) - - EXT2_GOOD_OLD_INODE_SIZE - - inode->i_extra_isize; - magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE + - inode->i_extra_isize); - if (*magic == EXT2_EXT_ATTR_MAGIC) { - fprintf(out, "Extended attributes stored in inode body: \n"); - end = (char *) inode + EXT2_INODE_SIZE(current_fs->super); - start = (char *) magic + sizeof(__u32); - entry = (struct ext2_ext_attr_entry *) start; - while (!EXT2_EXT_IS_LAST_ENTRY(entry)) { - struct ext2_ext_attr_entry *next = - EXT2_EXT_ATTR_NEXT(entry); - if (entry->e_value_size > storage_size || - (char *) next >= end) { - fprintf(out, "invalid EA entry in inode\n"); - return; - } - fprintf(out, " "); - dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry), - entry->e_name_len); - fprintf(out, " = \""); - dump_xattr_string(out, start + entry->e_value_offs, - entry->e_value_size); - fprintf(out, "\" (%u)\n", entry->e_value_size); - entry = next; - } - } +} + +/* Dump extended attributes */ +static int dump_attr(char *name, char *value, size_t value_len, void *data) +{ + FILE *out = data; + + fprintf(out, " "); + dump_xattr_string(out, name, strlen(name)); + fprintf(out, " = \""); + dump_xattr_string(out, value, value_len); + fprintf(out, "\" (%zu)\n", value_len); + + return 0; +} + +static void dump_inode_attributes(FILE *out, ext2_ino_t ino) +{ + struct ext2_xattr_handle *h; + errcode_t err; + + err = ext2fs_xattrs_open(current_fs, ino, &h); + if (err) + return; + + err = ext2fs_xattrs_read(h); + if (err) + goto out; + + if (ext2fs_xattrs_count(h) == 0) + goto out; + + fprintf(out, "Extended attributes:\n"); + err = ext2fs_xattrs_iterate(h, dump_attr, out); + if (err) + goto out; + +out: + err = ext2fs_xattrs_close(&h); } static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode) @@ -815,6 +826,7 @@ void internal_dump_inode(FILE *out, const char *prefix, if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE) internal_dump_inode_extra(out, prefix, inode_num, (struct ext2_inode_large *) inode); + dump_inode_attributes(out, inode_num); if (current_fs->super->s_creator_os == EXT2_OS_LINUX && current_fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) { diff --git a/tests/r_inline_xattr/expect b/tests/r_inline_xattr/expect index 9e71264..c7aa088 100644 --- a/tests/r_inline_xattr/expect +++ b/tests/r_inline_xattr/expect @@ -1,8 +1,7 @@ resize2fs test debugfs -R ''stat file'' test.img 2>&1 | grep ''^Inode\|in inode body\|name = '' Inode: 1550 Type: regular Mode: 0644 Flags: 0x0 -Extended attributes stored in inode body: - name = "propervalue" (11) + user.name = "propervalue" (11) Exit status is 0 resize2fs test.img 5M Resizing the filesystem on test.img to 5120 (1k) blocks. @@ -11,6 +10,5 @@ The filesystem on test.img is now 5120 blocks long. Exit status is 0 debugfs -R ''stat file'' test.img 2>&1 | grep ''^Inode\|in inode body\|name = '' Inode: 12 Type: regular Mode: 0644 Flags: 0x0 -Extended attributes stored in inode body: - name = "propervalue" (11) + user.name = "propervalue" (11) Exit status is 0 -- 1.7.9.7