Implement support for FS_IOC_SETFSLABEL and FS_IOC_GETFSLABEL ioctls.
Try to use the ioctls if possible even before we open the file system
since we don't need it. Only fall back to the old method in the case the
file system is not mounted, is mounted read only in the set label case,
or the ioctls are not suppported by the kernel.
The new ioctls can also be supported by file system drivers other than
ext4. As a result tune2fs and e2label will work for those file systems
as well as long as the file system is mounted. Note that we still truncate
the label exceeds the supported lenghth on extN file system family, while
we keep the label intact for others.
Update tune2fs and e2label as well.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The e2fsprogs programs have historically just said that they operate
on ext2 and ext3 file system in their man pages. Update them to say
that they also operate on ext4 file systems.
Addresses-Launchpad-bug: #381854
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
dumpe2fs.c (main): Add new flag, -i, which will allow dumpe2fs to dump
out the filesystem statistics from an ext2 image file.
Many files:
e2image.8.in: New manual page
badblocks.8.in, e2label.8.in, mke2fs.8.in mklost+found.8.in,
tune2fs.8.in: Update location of e2fsprogs to be
http://e2fsprogs.sourceforge.net.
badblocks.8.in, chattr.1.in, dumpe2fs.8.in, e2label.8.in,
fsck.8.in, lsattr.1.in, mke2fs.8.in, mklost+found.8.in,
tune2fs.8.in, uuidgen.1.in: Update man page to use a more standard
format (bold option flags and italicized variables), as suggested by
Andreas Dilger (adilger@enel.ucalgary.ca)
ChangeLog, e2fsck.8.in:
e2fsck.8.in: Update man page to use a more standard format (bold
option flags and italicized variables), as suggested by Andreas Dilger
(adilger@enel.ucalgary.ca)
ChangeLog, uuid_generate.3.in:
uuid_generate.8.in: Update man page to use a more standard format
(bold option flags and italicized variables), as suggested by Andreas
Dilger (adilger@enel.ucalgary.ca)
e2label.c: Fix -Wall warning by making functions static.
chattr.1.in: Document that the append-only attribute may only be set
or cleared by the superuser.
Update all manual pages to that the availability section is
up-to-date.
e2label.8.in, tune2fs.8.in: Update manual page to state that labels
must be no longer than 16 characters, or they will be truncated.
e2label.c (change_label), tune2fs.c (main): If the label is longer
than 16 characters, print a warning message stating that the label
will be truncated.
mke2fs.c (PRS): If the user specifies a filesystem size, and it's
larger than the apparent size of the device, print a warning message
and ask if the user wants to proceed.
