summaryrefslogtreecommitdiff
path: root/src/shared/util.c
AgeCommit message (Collapse)Author
2015-04-06util: rework rm_rf() logicLennart Poettering
- Move to its own file rm-rf.c - Change parameters into a single flags parameter - Remove "honour sticky" logic, it's unused these days
2015-03-27fix gcc warnings about uninitialized variablesHarald Hoyer
like: src/shared/install.c: In function ‘unit_file_lookup_state’: src/shared/install.c:1861:16: warning: ‘r’ may be used uninitialized in this function [-Wmaybe-uninitialized] return r < 0 ? r : state; ^ src/shared/install.c:1796:13: note: ‘r’ was declared here int r; ^
2015-03-26util: rework word parsing and c unescaping codeLennart Poettering
When parsing words from input files, optionally automatically unescape the passed strings, controllable via a new flags parameter. Make use of this in tmpfiles, and port everything else over, too. This improves parsing quite a bit, since we no longer have to process the same string multiple times with different calls, where an earlier call might corrupt the input for a later call.
2015-03-25fstab-generator: don't accept missing root=, but accept root=noneTobias Hunger
And other non-device entries (like fstab does). Mount whatever the user asked to be mounted on / on the kernel command line. Do less sanity check and do *not* bail out when the mount device looks strange or does not exist. This basically makes the changes for deviceless filesystems from yesterday unnecessary and is in line with what we do for filesystems set up in fstab. Remove some code that is now dead (reverting fb02a2775a65 and b0438462). [tomegun: - change patch title/description a bit. - don't touch the /usr logic, that would be a separate change and we don't currently have a convincing use-case for that. - don't bail out on /sys ro. This only makes sense in containers, where we would not be doing this anyway. If there is a use-case we could consider that as a separate patch.]
2015-03-24fstab-generator: Support root on tmpfs (or other deviceless FS)Tobias Hunger
This allows for stateless systems.
2015-03-19Add change_attr_fd()Goffredo Baroncelli
Add change_attr_fd() function to modify the file/directory attribute.
2015-03-16shared - reinstate plymouth_running()Tom Gundersen
This will be used by fsckd. This reverts part of 031886edfc6e96ab778c241035a8d00fb0de99d3.
2015-03-16core: Remove explicit Plymouth integrationJasper St. Pierre
Even if plymouth is running, it might have not displayed the splash yet, so we'll see a few lines on fbcon when we should have otherwise had nothing. Plymouth integration was added to systemd in commit 6faa11140bf776cdaeb8d22d01816e6e48296971. That same day, Plymouth got systemd integration [0]. As such, the Plymouth integration has always been obsolete, and was probably only for older Plymouth's. But I can't imagine anybody running a Plymouth from 2011 with a systemd from 2015. Remove the Plymouth/systemd integration, and let Plymouth's code tell systemd to print the details. [0] http://cgit.freedesktop.org/plymouth/commit/?id=537c16422cd49f1beeaab1ad39846a00018faec1 Signed-off-by: Jasper St. Pierre <jstpierre@mecheye.net> Cc: Daniel Drake <dsd@endlessm.com> Cc: Ray Strode <rstrode@redhat.com>
2015-03-15util: check asprintf return valueZbigniew Jędrzejewski-Szmek
CID #1237546.
2015-03-14util: remove redundant debug messageZbigniew Jędrzejewski-Szmek
mar 14 20:05:34 fedora22 systemd[4058]: /usr/lib/systemd/system-generators/kdump-dep-generator.sh will be executed. mar 14 20:05:34 fedora22 systemd[4058]: Spawned /usr/lib/systemd/system-generators/kdump-dep-generator.sh as 4059. The second line already says everything.
2015-03-13Check that EWOULDBLOCK is the same as EAGAINZbigniew Jędrzejewski-Szmek
It certainly is everywhere on Linux, but as a courtesy to people doing some strange cross-compilation, check that the assumption holds.
2015-03-13tree-wide: there is no ENOTSUP on linuxDavid Herrmann
Replace ENOTSUP by EOPNOTSUPP as this is what linux actually uses.
2015-03-10util: add rename_noreplaceAlban Crequy
renameat2() exists since Linux 3.15 but btrfs support for the flag RENAME_NOREPLACE was added later. This patch implements a fallback when renameat2() returns EINVAL. EINVAL is the error returned when the filesystem does not support one of the flags.
2015-03-10Add type specifier for intThomas Hindoe Paaboel Andersen
2015-03-09Introduce loop_read_exact helperZbigniew Jędrzejewski-Szmek
Usually when using loop_read(), we want to read the full buffer. Add a helper that mirrors loop_write(), and returns 0 when full buffer was read, and an error otherwise. Use -ENODATA for the short read, to distinguish it from a read error.
2015-03-03shared/util: assume ac when /sys/class/power_supply is missingZbigniew Jędrzejewski-Szmek
On s390 (at least) /sys/class/power_supply is not present. We should treat this like if this directory was empty, and not an error.
2015-03-01shared: AFS is also a network filesystemCristian Rodríguez
2015-02-23remove unused includesThomas Hindoe Paaboel Andersen
This patch removes includes that are not used. The removals were found with include-what-you-use which checks if any of the symbols from a header is in use.
2015-02-18shared: introduce cmsg_close_all() callLennart Poettering
The call iterates through cmsg list and closes all fds passed via SCM_RIGHTS. This patch also ensures the call is used wherever appropriate, where we might get spurious fds sent and we should better close them, then leave them lying around.
2015-02-18Add gettext supportDidier Roche
2015-02-14util: use a shared lookup function for string tablesBruno Bottazzini
Macro DEFINE_STRING_TABLE_LOOKUP expands to a new function for each of the almost 120 tables throghout the code. Move the its implementation to a function (guaranteed to never be inlined), and make the macro expand to an inlined function that calls this function. This saves a few kilobytes from the systemd binary (David: - fix coding-style - use 'ssize_t' to fix 32bit to 64bit propagation - use streq_ptr())
2015-02-12include <poll.h> instead of <sys/poll.h>Thomas Hindoe Paaboel Andersen
include-what-you-use automatically does this and it makes finding unnecessary harder to spot. The only content of poll.h is a include of sys/poll.h so should be harmless.
2015-02-11tree-wide: whenever we include libgen.h, immediately undefine basename()Lennart Poettering
Also, document in adjacent comments and in CODING_STYLE why we do that.
2015-02-03util: rework strappenda(), and rename it strjoina()Lennart Poettering
After all it is now much more like strjoin() than strappend(). At the same time, add support for NULL sentinels, even if they are normally not necessary.
2015-01-28util: add comment explaining hostname_is_valid()Lennart Poettering
2015-01-22import: introduce new mini-daemon systemd-importd, and make machinectl a ↵Lennart Poettering
client to it The old "systemd-import" binary is now an internal tool. We still use it as asynchronous backend for systemd-importd. Since the import tool might require some IO and CPU resources (due to qcow2 explosion, and decompression), and because we might want to run it with more minimal priviliges we still keep it around as the worker binary to execute as child process of importd. machinectl now has verbs for pulling down images, cancelling them and listing them.
2015-01-21util: Add some missing hidden_file() suffixesMartin Pitt
dpkg itself also uses *.dpkg-dist, while .dpkg-{bak,backup,remove} are being used by dpkg-maintscript-helper.
2015-01-21import: add image verification using gpgLennart Poettering
This also adds an initial keyring for the verification, that contains Ubuntu's and Fedora's key. We should probably add more entries sooner or later.
2015-01-20util: make http url validity checks more generic, and move them to util.cLennart Poettering
2015-01-19import-raw: when downloading raw images, generate sparse files if we canLennart Poettering
2015-01-18util: replace RUN_WITH_LOCALE with extended locale functionsCristian Rodríguez
There were two callers, one can use strtod_l() and the other strptime_l(). (David: fix up commit-msg and coding-style)
2015-01-14nspawn: add file system locks for controlling access to container imagesLennart Poettering
This adds three kinds of file system locks for container images: a) a file system lock next to the actual image, in a .lck file in the same directory the image is located. This lock has the benefit of usually being located on the same NFS share as the image itself, and thus allows locking container images across NFS shares. b) a file system lock in /run, named after st_dev and st_ino of the root of the image. This lock has the advantage that it is unique even if the same image is bind mounted to two different places at the same time, as the ino/dev stays constant for them. c) a file system lock that is only taken when a new disk image is about to be created, that ensures that checking whether the name is already used across the search path, and actually placing the image is not interrupted by other code taking the name. a + b are read-write locks. When a container is booted in read-only mode a read lock is taken, otherwise a write lock. Lock b is always taken after a, to avoid ABBA problems. Lock c is mostly relevant when renaming or cloning images.
2015-01-14machined: use the FS_IMMUTABLE_FL file flag, if available, to implement a ↵Lennart Poettering
"read-only" concept for raw disk images, too
2015-01-14util: the chattr flags field is actually unsigned, judging by kernel sourcesLennart Poettering
Unlike some client code suggests...
2015-01-11shared/util: respect buffer boundary on incomplete escape sequencesZbigniew Jędrzejewski-Szmek
cunescape_length_with_prefix() is called with the length as an argument, so it cannot rely on the buffer being NUL terminated. Move the length check before accessing the memory. When an incomplete escape sequence was given at the end of the buffer, c_l_w_p() would read past the end of the buffer. Fix this and add a test.
2015-01-11Add new function to filter fstab optionsZbigniew Jędrzejewski-Szmek
This fixes parsing of options in shared/generator.c. Existing code had some issues: - it would treate whitespace and semicolons as seperators. fstab(5) is pretty clear that only commas matter. And the syntax does not allow for spaces to be inserted in the field in fstab. Whitespace might be escaped, but then it should not seperate options. Treat whitespace and semicolons as any other character. - it assumed that x-systemd.device-timeout would always be followed by "=". But this is not guaranteed, hasmntopt will return this option even if there's no value. Uninitialized memory could be read. - some error paths would log, and inconsistently, some would just return an error code. Filtering is split out to a separate function and tests are added. Similar code paths in other places are adjusted to use the new function.
2015-01-11Implement masking and overriding of generatorsZbigniew Jędrzejewski-Szmek
Sometimes it is necessary to stop a generator from running. Either because of a bug, or for testing, or some other reason. The only way to do that would be to rename or chmod the generator binary, which is inconvenient and does not survive upgrades. Allow masking and overriding generators similarly to units and other configuration files. For the systemd instance, masking would be more common, rather than overriding generators. For the user instances, it may also be useful for users to have generators in $XDG_CONFIG_HOME to augment or override system-wide generators. Directories are searched according to the usual scheme (/usr/lib, /usr/local/lib, /run, /etc), and files with the same name in higher priority directories override files with the same name in lower priority directories. Empty files and links to /dev/null mask a given name. https://bugs.freedesktop.org/show_bug.cgi?id=87230
2015-01-11Simplify execute_directory()Zbigniew Jędrzejewski-Szmek
Remove the optional sepearate opening of the directory, it would be just too complicated with the change to multiple directories. Move the middle of execute_directory() to a seperate function to make it easier to grok.
2015-01-08util: make it easy to initialize the crtime from the current time in ↵Lennart Poettering
fd_setcrtime()
2015-01-08journald: turn off COW for journal files on btrfsLennart Poettering
btrfs' COW logic results in heavily fragment journal files, which is detrimental for perfomance. Hence, turn off COW for journal files as we create them. Turning off COW comes at the cost of data integrity guarantees, but this should be acceptable, given that we do our own checksumming, and generally have a pretty conservative write pattern. Also see discussion on linux-btrfs: http://www.spinics.net/lists/linux-btrfs/msg41001.html
2015-01-07util: upgrade default $TERM from vt102 to vt220 if we have no idea about the ↵Lennart Poettering
connected terminal So far, if we had no knowledge about the correct $TERM we defaulted to v102, as a safe, conservative choice. However, the terminfo data for vt102 is not aware of pageup/pagedown, which makes "less" much harder work with than necessary. Setting vt220 allows them to work correctly. "vt220" should be a sufficiently safe choice too, given that xterm, gnome-terminal and the linux console all strive to implement vt220 as baseline, already to pass pageup/pagedown correctly to apps. Effectively, with this change "journalctl -e" run inside a "systemd-nspawn" terminal will now run a pager where pageup/pagedown works, which is quite an improvement of usability for containers.
2015-01-07util: make use of kcmp() to compare fds, if it is availableLennart Poettering
2015-01-07util: don't fail recursive bind mounting if we cannot read the mount flags ↵Lennart Poettering
from an obstructed mounted
2015-01-06core: add new logic for services to store file descriptors in PID 1Lennart Poettering
With this change it is possible to send file descriptors to PID 1, via sd_pid_notify_with_fds() which PID 1 will store individually for each service, and pass via the usual fd passing logic on next invocation. This is useful for enable daemon reload schemes where daemons serialize their state to /run, push their fds into PID 1 and terminate, restoring their state on next start from the data in /run and passed in from PID 1. The fds are kept by PID 1 as long as no POLLHUP or POLLERR is seen on them, and the service they belong to are either not dead or failed, or have a job queued.
2015-01-05util: Do not clear parent mount flags when setting up namespacesTopi Miettinen
When setting up a namespace, mount flags like noexec, nosuid and nodev are cleared, so the mounts always have exec, suid and dev flags enabled. Copy source directory mount flags to target mount when remounting the bind mounts.
2015-01-05util: Fix signedness error in lines(), match implementationsColin Walters
Regression introduced by ed757c0cb03eef50e8d9aeb4682401c3e9486f0b Mirror the implementation of columns(), since the fd_columns() functions returns a negative integer for errors. Also fix columns() to return the unsigned variable instead of the signed intermediary (they're the same, but better to be explicit).
2014-12-28util: treat -1 as special size in format_bytes()Lennart Poettering
2014-12-28machinectl/machined: implement "rename", "clone", "read-only" verbs for ↵Lennart Poettering
machine images
2014-12-26util: always override crtime xattrLennart Poettering
2014-12-25machined: beef up machined image listing with creation/modification times of ↵Lennart Poettering
subvolumes We make use of the btrfs subvol crtime for this, and for gpt images of a manually managed xattr, if we can.