Create a version of debugfs which only supports read-only examination
of the file system metadata (but not the data blocks). The idea is
that this version of debugfs might be suitable to be setuid root, and
executable only by members of a particular group, or setgid disk, and
globally executable, depending on the security/privacy policies in
force at a particular site.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Several small fixes:
* Gracefully fail mmp commands if fs is not open
* Show magic number in dump_mmp command
* Fix header in output for set_mmp_value -l
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The ext2fs_file_acl_block() and ext2fs_set_file_acl_block() needs to
only check i_file_acl_high if the 64-bit flag is set. This is needed
because otherwise we will run into problems on Hurd systems which
actually use that field for h_i_mode_high.
This involves an ABI change since we need to pass ext2_filsys to these
functions. Fortunately these functions were first included in the
1.42-WIP series, so it's OK for us to change them now. (This is why
we have 1.42-WIP releases. :-)
Addresses-Sourceforge-Bug: #3379227
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Multi-mount protection is feature that allows mke2fs, e2fsck, and
others to detect if the filesystem is mounted on a remote node (on
SAN disks) and avoid corrupting the filesystem. For e2fsprogs this
means that it checks the MMP block to see if the filesystem is in use,
and marks the filesystem busy while e2fsck is running on the system.
This is useful on SAN disks that are shared between high-availability
servers, or accessible by multiple nodes that aren't in HA pairs. MMP
isn't intended to serve as a primary HA exclusion mechanism, but as a
failsafe to protect against user, software, or hardware errors.
There is no requirement that e2fsck updates the MMP block at regular
intervals, but e2fsck does this occasionally to provide useful
information to the sysadmin in case of a detected conflict.
For the kernel (since Linux 3.0) MMP adds a "heartbeat" mechanism to
periodically write to disk (every few seconds by default) to notify
other nodes that the filesystem is still in use and unsafe to modify.
Originally-by: Kalpak Shah <kalpak@clusterfs.com>
Signed-off-by: Johann Lombardi <johann@whamcloud.com>
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The DEFS line in MCONFIG had gotten so long that it exceeded 4k, and
this was starting to cause some tools heartburn. It also made "make
V=1" almost useless, since trying to following the individual commands
run by make was lost in the noise of all of the defines.
So fix this by putting the configure-generated defines in lib/config.h
and the directory pathnames to lib/dirpaths.h.
In addition, clean up some vestigal defines in configure.in and in the
Makefiles to further shorten the cc command lines.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The blocks command prints out the blocks used by a particular inode,
in a format which is useful for test suite automation.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Use the EXT2_I_SIZE() macro consistently to access the inode size.
The i_size/i_size_high combination is open coded in several places.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Fix several types of compiler warnings (unused variables/labels),
uninitialized variables, etc that are hit with gcc -Wall.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Use "[u]" instead of "[uninit]" and limit the amount of detail printed
for the extent tree blocks, so it is more similar to the format used
for direct/indirect mapped inodes.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
After cleaning up ext2fs_bg_flag_set() and ext2fs_bg_flag_clear(),
we're left with ext2fs_bg_flag_test(). Convert it to
ext2fs_bg_flags_test().
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the cmd_file is not stdin, we should close the file handle via fclose().
Thanks David Binderman to point this out.
Addresses-Novell-Bugzilla: #524526
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Extend the stat command to display more detailed extent information if
the file uses extent mapping instead of displaying the block map using
the block_iterate funtion.
Add the command dump_extents which displays even more detailed
information about an inode's extent tree.
This commit is an extension of a patch from Curt Wohlgemuth.
Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add an -a option to the close_filesys command which writes any changes
to the superblock or block group descriptors to all of the backup
superblock locations.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This is a regression from commit
8fdf29117f, which attempts to access
current_fs via a feature check before we check that it's open.
Just moving the feature check below the open check should fix it.
Reported-by: Andrew Hecox <ahecox@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Print out the currently supported features of e2fsprogs/libext2fs
via a new "debugfs supported_features" command. This helps scripts
to know whether it is possible to try and enable specific features
in the filesystem.
Signed-off-by: Kalpak Shah <kalpak.shah@sun.com>
Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Trivial fix to print the progname instead of argv[0] in error message.
Signed-off-by: "Manish Katiyar" <mkatiyar@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Close the filehandle and return in case if we are unable to expand the
directory during write.
Signed-off-by: "Manish Katiyar" <mkatiyar@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
On Solaris setbuf() will discard any pending output to the stream, so
make we call fflush() before calling setbuf().
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Taking a cue from getfattr... if a string is "mostly"
printable characters, go ahead & print as a string,
and escape what's left over.
so we get:
Extended attributes stored in inode body:
selinux = "system_u:object_r:root_t:s0\000" (28)
instead of:
Extended attributes stored in inode body:
selinux = "73 79 73 74 65 6d 5f 75 3a 6f 62 6a 65 63 74 5f 72 3a 72 6f 6f 74 5f 74 3a 73 30 00 " (28)
(selinux includes the trailing null in "len" so it
never prints as a string today)
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Pass BLOCK_FLAG_READ_ONLY to ext2fs_block_iterate2() so that debugfs,
e2image, and tune2fs will work well with filesystems containing
extents.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This change allows debugfs to be reused as the base for e2fsprogs
internal test programs, by linking debugfs object files with
additional object file(s) that define additional commands. The test
program's object file(s) should define their own comand table, and
define the symbol extra_cmds to be a pointer to the ss_request_table.
In addition, the symbol debug_prog_name can be used to override the
name of the program printed in the version banner and in the ss
prompt.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Zheng Liu