Masatake YAMATO [Tue, 8 May 2007 11:52:18 +0000 (11:52 +0000)]
lomount.c: don't use mlockall if CRYPT_NONE
loop back mounting emits two system calls: mount and mlockall.
mount is obviously needed. mlockall is needed for encryption.
As the result both CAP_SYS_ADMIN and CAP_IPC_LOCK are needed
to do loopback mounting.
The problem is that CAP_IPC_LOCK is always needed through my
command doesn't need encryption.
With the following patch, mount calls mlockall only when
encryption is needed.
H. Peter Anvin [Sat, 7 Jul 2007 01:32:31 +0000 (18:32 -0700)]
fdisk: when generating a DOS disk label, give it an ID
Newer Micro$oft operating systems (NT 3 and later) put a 4-byte
signature in the MBR at offset 440 decimal. Generate a random such
signature when creating a new disk label, and allow it to be changed.
Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Karel Zak <kzak@redhat.com>
build-sys: fix linking when ncurses is built with --with-termlib=tinfo
When system ncurses is built with --with-termlib=tinfo option
then there are two libraries - libtinfo (which contains terminal
related functions) and libncurses (rest).
David Miller [Fri, 29 Jun 2007 22:50:21 +0000 (15:50 -0700)]
fdisk: many significant improvements and fixes to Sun label handling
1) Properly describe the exact layout and fields of the sun disk
label. Several fields were incorrectly mentioned and others
wrongly sized.
2) Properly set the version, sane, and num_partitions fields.
Because we weren't doing this, programs such as Solaris's format
and the Solaris kernel itself refused to recognize our disk labels
as valid.
3) Move SSWAP*() macros into fdisksunlabel.c as there is no reason
for them to be exposed to the rest of fdisk.
4) Kill the sun_predefined_drives array hack and assosciated code.
Instead size the disk and figure out the geometry properly just
like the SGI and MSDOS partition handling do, by means of the
HD_GETGEO ioctl() and disksize().
5) If the disk label read is found to not have the proper values
set in version, sane, or num_partitions, fix them, recompute the
label checksum, dirty the disk label, and let the user know what
we did and that the fixed values will be written out if they 'w'.
This gives users an easy way to fix up disk labels created by
disk labelling programs which had this bug.
6) Create a sun_sys_getid() function so that fdisk.c does not need
to reference the sun disk label details directly, just like the
SGI code does.
Signed-off-by: David S. Miller <davem@davemloft.net>
Karel Zak [Fri, 29 Jun 2007 09:38:54 +0000 (11:38 +0200)]
blockdev: add BLKFRAGET/BLKFRASET ioctls
In Linux 2.6 the BLKRASET ioctl has the desired effect for mounted
file-systems. In Linux 2.4 it appears to set the number of blocks to
read-ahead on the *device* as opposed to within a *file*, and the
maximum value of this number is 255. As a result the invocation of
blockdev will fail on Linux 2.4 for any usefully large value of
READAHEAD, and will not in any case have the desired affect for
fragmented files.
(Based on the blockdev-getfra-setfra.patch Debian patch.)
Luciano Chavez [Fri, 9 Mar 2007 03:07:52 +0000 (21:07 -0600)]
sfdisk: setting default geometry values
The cfdisk and fdisk set defaults for heads and sectors in order to handle a
situation when the get_geometry() ends up with zeroes for the disk geometry for
device-mapper devices. This patch add same functionally to sfdisk.
You know that a dmsetup setgeometry of the the dm device can be used to
circumvent the issue but users may not immediately realize they need to do
that.
Kay Sievers [Thu, 21 Jun 2007 11:31:52 +0000 (13:31 +0200)]
mount: use encoded labels for volume_id
The current version of libvolume_id exports the encoding function for the
symlinks names, so slashes in labels and other chars, that don't really fit
into symlink names, will work as expected with LABEL=.
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