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path: root/src/basic/btrfs-util.c
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2016-01-18Use negative_errno() to assert errno is positive after a few system callsZbigniew Jędrzejewski-Szmek
This is not particularly intrusive because it happens in simple utility functions. It helps gcc understand that error codes are negative. This gets a rid of most of the remaining warnings.
2015-12-01basic: re-sort includesThomas Hindoe Paaboel Andersen
My previous patch to only include what we use accidentially placed the added inlcudes in non-sorted order.
2015-11-30basic: include only what we useThomas Hindoe Paaboel Andersen
This is a cleaned up result of running iwyu but without forward declarations on src/basic.
2015-11-16Merge pull request #1915 from poettering/btrfs-root-subvolDavid Herrmann
tmpfiles: create subvolumes for "v", "q", and "Q" only if / is a subv…
2015-11-16tmpfiles: create subvolumes for "v", "q", and "Q" only if / is a subvolumeLennart Poettering
It's not a good idea to create subvolumes for parts of the OS tree (such as /home, or /var) if the root directory is not a subvolume too. We shouldn't assume control of "heavier" objects such as subvolumes, if the originating object (the root directory) is a "light-weight" object, i.e. a plain directory. Effectively this means that chroot() environments that are run on a plain directory do not have to deal with problems around systemd creating subvolumes that cannot be removed with a simple "rm" anymore. However, if the chroot manager creates a proper subvolume for such an environment it will also get further subvolumes placed in there, under the assumption that the manager understands the concept of subvolumes in that case.
2015-11-13btrfs: properly handle the case when a subvol has no parentLennart Poettering
Don't be confused by subvols without parent. This is after all how the root subvol is set up.
2015-11-10tmpfiles: don't consider it a problem if quota is not enabled on btrfsLennart Poettering
If quota is not enabled on a btrfs file system, accept that, and only log a debug message, but do not consider this a reason for failure. Fixes: #1809
2015-11-10btrfs: when querying quota, make sure we don't choke if quota is disabledLennart Poettering
When quota is disabled there's no quota tree on the fs, which results in the SEARCH ioctl to return ENOENT. Handle this nicely: treat this the same way as the case where the quota tree is around but doesn't carry the searched for fields.
2015-10-27util-lib: split out allocation calls into alloc-util.[ch]Lennart Poettering
2015-10-27stat-util.h: move F_TYPE_EQUAL() macro definition to stat-util.hLennart Poettering
2015-10-27util: remove path_get_parent(), in favour of dirname_malloc()Lennart Poettering
We don't need two functions that do essentialy the same, hence drop path_get_parent(), and stick to dirname_malloc(), but move it to path-util.[ch].
2015-10-25util-lib: split out fd-related operations into fd-util.[ch]Lennart Poettering
There are more than enough to deserve their own .c file, hence move them over.
2015-10-24util-lib: split our string related calls from util.[ch] into its own file ↵Lennart Poettering
string-util.[ch] There are more than enough calls doing string manipulations to deserve its own files, hence do something about it. This patch also sorts the #include blocks of all files that needed to be updated, according to the sorting suggestions from CODING_STYLE. Since pretty much every file needs our string manipulation functions this effectively means that most files have sorted #include blocks now. Also touches a few unrelated include files.
2015-10-22btrfs: beef-up btrfs support with a limited understanding of quotaLennart Poettering
With this change we understand more than just leaf quota groups for btrfs file systems. Specifically: - When we create a subvolume we can now optionally add the new subvolume to all qgroups its parent subvolume was member of too. Alternatively it is also possible to insert an intermediary quota group between the parent's qgroups and the subvolume's leaf qgroup, which is useful for a concept of "subtree" qgroups, that contain a subvolume and all its children. - The remove logic for subvolumes has been updated to optionally remove any leaf qgroups or "subtree" qgroups, following the logic above. - The snapshot logic for subvolumes has been updated to replicate the original qgroup setup of the source, if it follows the "subtree" design described above. It will not cover qgroup setups that introduce arbitrary qgroups, especially those orthogonal to the subvolume hierarchy. This also tries to be more graceful when setting up /var/lib/machines as btrfs. For example, if mkfs.btrfs is missing we don't even try to set it up as loopback device. Fixes #1559 Fixes #1129
2015-10-15btrfs: always remove the per-subvol qgroup when removing a subvolLennart Poettering
btrfs doesn't do that automatically, hence let's do that explicitly each time.
2015-06-15btrfs-util: when snapshotting make sure we don't descent into subvolumes we ↵Lennart Poettering
just created We already had a safety check in place that we don't end up descending to the original subvolume again, but we also should avoid descending in the newly created one. This is particularly important if we make a snapshot below its source, like we do in "systemd-nspawn --ephemeral -D /". Closes https://bugs.freedesktop.org/show_bug.cgi?id=90803
2015-06-11build-sys: split internal basic/ library from shared/Kay Sievers
basic/ can be used by everything cannot use anything outside of basic/ libsystemd/ can use basic/ cannot use shared/ shared/ can use libsystemd/