Currently 'tune2fs -O quota <dev>' will try to use existing
quota files and write their inode numbers in the superblock.
Next e2fsck run then converts these into hidden quota inodes
(ino #3 & #4). But this approach has problems:
1) Before e2fsck run, the inodes are visible to the user and
might get corrupted or removed or replaced by the user.
2) Since these are user visible, we have to include
their block usage in the quota accounting. But once
these inodes are hidden, e2fsck will have to decrement
their usage from the quota accounting (which e2fsck
currently doesn't do and instead reports error).
(the following used to give e2fsck error previously:
# assume <dev> has aquota.user & aquota.group files
$ tune2fs -O quota <dev> # stores ino# of quota files in
# ext4 superblock
$ e2fsck -f <dev> # hides quota files, but now quota
# usage is incorrect.
<< quota errors >>
Instead of making e2fsck complicated, this patch creates the
hidden quota inodes at 'tune2fs -O quota' time iteself. The
usage is computed freshly and limits are copied from the
aquota.user and aquota.group files as earlier.
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Quite some definitions in quota library are not necessary. Remove them.
Also fold quota.h file into quotaio.h since it didn't contain that many
definitions.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The quotactl() system call was being used without the use of a
function prototype. On closer examination, it turns out the one user
of that system call was the quota_is_on() function, which is not used
by e2fsprogs at all. Since libquota is an e2fsprogs-internal library,
and not one that we plan to export any time soon, the simplest thing
to do is to simply remove quota_is_on(), which in turn allows us to
remove all of the infrastructure around using the Linux-specific
quotactl() system call.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Currently fsck recomputes quotas and overwrites quota files
whenever its run. This causes unnecessary modification of
filesystem even when quotas were never inconsistent. We also
lose the limits information because of this. With this patch,
e2fsck compares the computed quotas to the on-disk quotas
(while updating the in-memory limits) and writes out the
quota inode only if it is inconsistent.
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Don't use the system <sys/quota.h> header in mkquota.c, since there
is a local e2fsprogs version of quota.h that is already included and
has the desired quota constants, and avoids symbol conflicts with the
system <sys/quota.h> on other platforms (in particular OSX).
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In quota_compute_usage(), the space usage should be in bytes but
not quota block.
Signed-off-by: Niu Yawei <niu@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This patch cleans up the quota code as suggested in previous reviews. This
includes
* remove BUG_ON()s and 'exit()' calls from library code
* remove calls to malloc/free and instead use ext2fs_get/free_mem functions.
* lib/quota/common.c file in not needed anymore and is removed.
* rename exported functions to start with quota_
(ex: init_quota_context --> quota_init_context)
* better error handling in quota library
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The flag parameter wasn't being used, and using it meant that we had
to define the COMMIT_* flags, which relied on the QIF_* flags being
present. Removing this allows for increased portability.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The get_qf_name() function used PATH_MAX, which is non-portable.
Worse, it blindly assumed that PATH_MAX was the size of the buffer
passed to it --- which in the one and only place where it was used in
libquota, was a buffer declared to a fixed size 256 bytes.
Fix this by simply getting rid of the function altogether.
Cc: Aditya Kali <adityakali@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Remove unused variables, places where 'return' was used with no value
in a non-void function, missing function declarations, etc. Don't
assume that all systems have quotactl(), and use <sys/quota.h> if it
exists to define the quotactl interfaces.
One of the unused variables also got rid of a non-portable use of
PATH_MAX.
Cc: Aditya Kali <adityakali@google.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>
This patch adds the quota library (ported form Jan Kara's quota-tools) in
e2fsprogs in order to make quotas as a first class supported feature in Ext4.
This patch also provides interface in lib/quota/mkquota.h that will be used by
mke2fs, tune2fs, e2fsck, etc. to initialize and update quota files.
This first version of the quota library does not support reading existing quota
files. This support will be added in the near future.
Thanks to Jan Kara for his work on quota-tools. Most of the files in this patch
are taken as-is from quota tools and were simply modified to work with
libext2fs in e2fsprogs.
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Aditya Kali