Return-Path: Received: from bhuna.collabora.co.uk ([46.235.227.227]:32962 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726057AbeLALvP (ORCPT ); Sat, 1 Dec 2018 06:51:15 -0500 From: Gabriel Krisman Bertazi To: tytso@mit.edu Cc: kernel@collabora.com, linux-ext4@vger.kernel.org, Gabriel Krisman Bertazi Subject: [PATCH v4 3/9] chattr/lsattr: Support casefold attribute Date: Fri, 30 Nov 2018 19:39:04 -0500 Message-Id: <20181201003910.18982-4-krisman@collabora.com> In-Reply-To: <20181201003910.18982-1-krisman@collabora.com> References: <20181201003910.18982-1-krisman@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-ext4-owner@vger.kernel.org List-ID: From: Gabriel Krisman Bertazi This flag can be set on directories to request insensitive file name lookups. I used the letter 'F', referring to "caseFold" for lack of a better option. Signed-off-by: Gabriel Krisman Bertazi --- lib/e2p/pf.c | 1 + lib/ext2fs/ext2_fs.h | 5 +++-- misc/chattr.1.in | 8 +++++++- misc/chattr.c | 3 ++- 4 files changed, 13 insertions(+), 4 deletions(-) diff --git a/lib/e2p/pf.c b/lib/e2p/pf.c index 884f1671edae..0c6998c4b766 100644 --- a/lib/e2p/pf.c +++ b/lib/e2p/pf.c @@ -44,6 +44,7 @@ static struct flags_name flags_array[] = { { EXT2_TOPDIR_FL, "T", "Top_of_Directory_Hierarchies" }, { EXT4_EXTENTS_FL, "e", "Extents" }, { FS_NOCOW_FL, "C", "No_COW" }, + { EXT4_CASEFOLD_FL, "F", "Casefold" }, { EXT4_INLINE_DATA_FL, "N", "Inline_Data" }, { EXT4_PROJINHERIT_FL, "P", "Project_Hierarchy" }, { EXT4_VERITY_FL, "V", "Verity" }, diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h index c7d62b8d40b2..19bd94da008a 100644 --- a/lib/ext2fs/ext2_fs.h +++ b/lib/ext2fs/ext2_fs.h @@ -339,10 +339,11 @@ struct ext2_dx_tail { #define EXT4_SNAPFILE_SHRUNK_FL 0x08000000 /* Snapshot shrink has completed */ #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data */ #define EXT4_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ +#define EXT4_CASEFOLD_FL 0x40000000 /* Casefolded file */ #define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ -#define EXT2_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */ -#define EXT2_FL_USER_MODIFIABLE 0x204B80FF /* User modifiable flags */ +#define EXT2_FL_USER_VISIBLE 0x604BDFFF /* User visible flags */ +#define EXT2_FL_USER_MODIFIABLE 0x604B80FF /* User modifiable flags */ /* * ioctl commands diff --git a/misc/chattr.1.in b/misc/chattr.1.in index 028ae9e7ca4c..5949d096687b 100644 --- a/misc/chattr.1.in +++ b/misc/chattr.1.in @@ -29,7 +29,7 @@ The operator '+' causes the selected attributes to be added to the existing attributes of the files; '-' causes them to be removed; and '=' causes them to be the only attributes that the files have. .PP -The letters 'aAcCdDeijPsStTu' select the new attributes for the files: +The letters 'aAcCdDeFijPsStTu' select the new attributes for the files: append only (a), no atime updates (A), compressed (c), @@ -37,6 +37,7 @@ no copy on write (C), no dump (d), synchronous directory updates (D), extent format (e), +case-insensitive directory lookups (F), immutable (i), data journalling (j), project hierarchy (P), @@ -119,6 +120,11 @@ set or reset using although it can be displayed by .BR lsattr (1). .PP +A directory with the 'F' attribute set indicates that all the path +lookups inside that directory are made in a case-insensitive fashion. +This attribute can only be changed in empty directories on file systems +with the fname_encoding feature enabled. +.PP A file with the 'i' attribute cannot be modified: it cannot be deleted or renamed, no link can be created to this file, most of the file's metadata can not be modified, and the file can not be opened in write mode. diff --git a/misc/chattr.c b/misc/chattr.c index a5b401a741b7..a5d60170bdb6 100644 --- a/misc/chattr.c +++ b/misc/chattr.c @@ -86,7 +86,7 @@ static unsigned long sf; static void usage(void) { fprintf(stderr, - _("Usage: %s [-pRVf] [-+=aAcCdDeijPsStTu] [-v version] files...\n"), + _("Usage: %s [-pRVf] [-+=aAcCdDeijPsStTuF] [-v version] files...\n"), program_name); exit(1); } @@ -112,6 +112,7 @@ static const struct flags_char flags_array[] = { { EXT2_NOTAIL_FL, 't' }, { EXT2_TOPDIR_FL, 'T' }, { FS_NOCOW_FL, 'C' }, + { EXT4_CASEFOLD_FL, 'F' }, { 0, 0 } }; -- 2.20.0.rc1