diff options
author | Xiao Yang <yangx.jy@cn.fujitsu.com> | 2020-07-28 13:33:21 +0800 |
---|---|---|
committer | Theodore Ts'o <tytso@mit.edu> | 2020-10-01 16:55:16 -0400 |
commit | 1dd48bc23c3776df76459aff0c7723fff850ea45 (patch) | |
tree | 330175c42c13e2567f066cf52e8142ecfd5529c3 | |
parent | 4baaa1fcada10669af9c267d8c436383e0bffb07 (diff) | |
download | e2fsprogs-1dd48bc23c3776df76459aff0c7723fff850ea45.tar.gz |
chattr/lsattr: Support dax attribute
Use the letter 'x' to set/get dax attribute on a directory/file.
Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
-rw-r--r-- | lib/e2p/pf.c | 1 | ||||
-rw-r--r-- | lib/ext2fs/ext2_fs.h | 1 | ||||
-rw-r--r-- | misc/chattr.1.in | 15 | ||||
-rw-r--r-- | misc/chattr.c | 3 |
4 files changed, 16 insertions, 4 deletions
diff --git a/lib/e2p/pf.c b/lib/e2p/pf.c index 0c6998c4b..61fd4ab70 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" }, + { FS_DAX_FL, "x", "DAX" }, { EXT4_CASEFOLD_FL, "F", "Casefold" }, { EXT4_INLINE_DATA_FL, "N", "Inline_Data" }, { EXT4_PROJINHERIT_FL, "P", "Project_Hierarchy" }, diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h index d31891c44..475ecf939 100644 --- a/lib/ext2fs/ext2_fs.h +++ b/lib/ext2fs/ext2_fs.h @@ -335,6 +335,7 @@ struct ext2_dx_tail { /* EXT4_EOFBLOCKS_FL 0x00400000 was here */ #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ #define EXT4_SNAPFILE_FL 0x01000000 /* Inode is a snapshot */ +#define FS_DAX_FL 0x02000000 /* Inode is DAX */ #define EXT4_SNAPFILE_DELETED_FL 0x04000000 /* Snapshot is being deleted */ #define EXT4_SNAPFILE_SHRUNK_FL 0x08000000 /* Snapshot shrink has completed */ #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data */ diff --git a/misc/chattr.1.in b/misc/chattr.1.in index ff2fcf003..5a4928a54 100644 --- a/misc/chattr.1.in +++ b/misc/chattr.1.in @@ -23,13 +23,13 @@ chattr \- change file attributes on a Linux file system .B chattr changes the file attributes on a Linux file system. .PP -The format of a symbolic mode is +-=[aAcCdDeFijPsStTu]. +The format of a symbolic mode is +-=[aAcCdDeFijPsStTux]. .PP 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 'aAcCdDeFijPsStTu' select the new attributes for the files: +The letters 'aAcCdDeFijPsStTux' select the new attributes for the files: append only (a), no atime updates (A), compressed (c), @@ -45,7 +45,8 @@ secure deletion (s), synchronous updates (S), no tail-merging (t), top of directory hierarchy (T), -and undeletable (u). +undeletable (u), +and direct access for files (x). .PP The following attributes are read-only, and may be listed by .BR lsattr (1) @@ -210,6 +211,14 @@ saved. This allows the user to ask for its undeletion. Note: please make sure to read the bugs and limitations section at the end of this document. .TP +.B x +The 'x' attribute can be set on a directory or file. If the attribute +is set on an existing directory, it will be inherited by all files and +subdirectories that are subsequently created in the directory. If an +existing directory has contained some files and subdirectories, modifying +the attribute on the parent directory doesn't change the attributes on +these files and subdirectories. +.TP .B V A file with the 'V' attribute set has fs-verity enabled. It cannot be written to, and the filesystem will automatically verify all data read diff --git a/misc/chattr.c b/misc/chattr.c index a5d60170b..c0337f86b 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] [-+=aAcCdDeijPsStTuF] [-v version] files...\n"), + _("Usage: %s [-pRVf] [-+=aAcCdDeijPsStTuFx] [-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' }, + { FS_DAX_FL, 'x' }, { EXT4_CASEFOLD_FL, 'F' }, { 0, 0 } }; |