diff options
author | Theodore Ts'o <tytso@mit.edu> | 2001-11-05 19:22:02 -0500 |
---|---|---|
committer | Theodore Ts'o <tytso@mit.edu> | 2001-11-05 19:22:02 -0500 |
commit | b3f5b4c22939daba86465d05842bce76053bc3cf (patch) | |
tree | 67a743e609620b722ba90347a970ef3eef495088 | |
parent | 6430bd67cef317daebdef7812e87f0e2846b31a7 (diff) | |
download | e2fsprogs-b3f5b4c22939daba86465d05842bce76053bc3cf.tar.gz |
Define a new ext2 file attribute, EXT2_NOTAIL_FL,
which signals that a particular inode should not have the
last bits of data (the "tail") be merged with another
file. This is necessary to keep programs like LILO happy.
-rw-r--r-- | lib/e2p/ChangeLog | 4 | ||||
-rw-r--r-- | lib/e2p/pf.c | 1 | ||||
-rw-r--r-- | lib/ext2fs/ChangeLog | 7 | ||||
-rw-r--r-- | lib/ext2fs/ext2_fs.h | 5 | ||||
-rw-r--r-- | misc/ChangeLog | 5 | ||||
-rw-r--r-- | misc/chattr.1.in | 8 | ||||
-rw-r--r-- | misc/chattr.c | 1 |
7 files changed, 28 insertions, 3 deletions
diff --git a/lib/e2p/ChangeLog b/lib/e2p/ChangeLog index 69b32978..5b401255 100644 --- a/lib/e2p/ChangeLog +++ b/lib/e2p/ChangeLog @@ -1,3 +1,7 @@ +2001-11-05 Theodore Tso <tytso@valinux.com> + + * pf.c: Add a new file attribute, EXT2_NOTAIL_FL + 2001-09-20 Theodore Tso <tytso@thunk.org> * Release of E2fsprogs 1.25 diff --git a/lib/e2p/pf.c b/lib/e2p/pf.c index 60f5dea4..45c7b368 100644 --- a/lib/e2p/pf.c +++ b/lib/e2p/pf.c @@ -38,6 +38,7 @@ static struct flags_name flags_array[] = { { EXT2_NOCOMPR_FL, "X", "Compression_Raw_Access" }, { EXT2_ECOMPR_FL, "E", "Compression_Error" }, { EXT3_JOURNAL_DATA_FL, "j", "Journaled_Data" }, + { EXT2_NOTAIL_FL, "t", "No_Tailmerging" }, { 0, NULL, NULL } }; diff --git a/lib/ext2fs/ChangeLog b/lib/ext2fs/ChangeLog index 19b68257..07ad68ea 100644 --- a/lib/ext2fs/ChangeLog +++ b/lib/ext2fs/ChangeLog @@ -1,3 +1,10 @@ +2001-11-05 Theodore Tso <tytso@valinux.com> + + * ext2_fs.h: Define a new ext2 file attribute, EXT2_NOTAIL_FL, + which signals that a particular inode should not have the + last bits of data (the "tail") be merged with another + file. This is necessary to keep LILO happy. + 2001-09-20 Theodore Tso <tytso@thunk.org> * Release of E2fsprogs 1.25 diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h index 0eb7be71..38649dfe 100644 --- a/lib/ext2fs/ext2_fs.h +++ b/lib/ext2fs/ext2_fs.h @@ -190,10 +190,11 @@ struct ext2_group_desc #define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */ #define EXT2_IMAGIC_FL 0x00002000 #define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */ +#define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */ #define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ -#define EXT2_FL_USER_VISIBLE 0x00005FFF /* User visible flags */ -#define EXT2_FL_USER_MODIFIABLE 0x000000FF /* User modifiable flags */ +#define EXT2_FL_USER_VISIBLE 0x0000DFFF /* User visible flags */ +#define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */ /* * ioctl commands diff --git a/misc/ChangeLog b/misc/ChangeLog index e83f21f2..d3e9aa5e 100644 --- a/misc/ChangeLog +++ b/misc/ChangeLog @@ -1,5 +1,10 @@ 2001-11-05 Theodore Tso <tytso@valinux.com> + * chattr.1.in: Update the man page to document the EXT2_NOTAIL_FL + flag. + + * chattr.c: Add support for the EXT2_NOTAIL_FL flag. + * fsck.c (interpret_type): If the "auto" type is specified, make sure interpet_device() is called so that device specifications which use LABEL= or UUID= are translated diff --git a/misc/chattr.1.in b/misc/chattr.1.in index 815e9c85..82f054bb 100644 --- a/misc/chattr.1.in +++ b/misc/chattr.1.in @@ -19,7 +19,7 @@ chattr \- change file attributes on a Linux second extended file system .B chattr changes the file attributes on a Linux second extended file system. .PP -The format of a symbolic mode is +-=[ASacdisu]. +The format of a symbolic mode is +-=[ASacdistu]. .PP The operator `+' causes the selected attributes to be added to the existing attributes of the files; `-' causes them to be removed; and @@ -74,6 +74,12 @@ When a file with the `S' attribute set is modified, the changes are written synchronously on the disk; this is equivalent to the `sync' mount option applied to a subset of the files. .PP +A file with the 't' attribute will not have a partial block fragment at +the of the file merged with other files (for those filesystems which +support tail-merging). This is necessary for applications such as LILO +which read the filesystem directly, and who don't understand tail-merged +files. +.PP When a file with the `u' attribute set is deleted, its contents are saved. This allows the user to ask for its undeletion. .PP diff --git a/misc/chattr.c b/misc/chattr.c index 730e7b8b..f22d4c90 100644 --- a/misc/chattr.c +++ b/misc/chattr.c @@ -96,6 +96,7 @@ static const struct flags_char flags_array[] = { { EXT3_JOURNAL_DATA_FL, 'j' }, { EXT2_SECRM_FL, 's' }, { EXT2_UNRM_FL, 'u' }, + { EXT2_NOTAIL_FL, 't' }, { 0, 0 } }; |