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Commit Graph

42 Commits

Author SHA1 Message Date
Lennart Poettering
384c5b44fe sysctl: reword warning message a bit
Let's make this less dramatic, in order to not confuse people too much
making them think that this was something to actually fix.
2015-08-05 11:02:24 +03:00
Jan Synacek
9bcfdd74fc sysctl: bump loglevel when attempting to write invalid values 2015-08-05 09:42:50 +02:00
Lennart Poettering
e50b33bebd sysctl: don't propagate ENOENT sysctl options
We shouldn't fail the sysctl service if an option is missing.

Previously the warning about this was already downgraded to LOG_DEBUG,
but we really shouldn't propagate such errors either.
2015-04-24 19:56:47 +02:00
Zbigniew Jędrzejewski-Szmek
924bc14fef sysctl: tweak debug message 2015-03-14 23:03:45 -04:00
Kay Sievers
88a60da054 sysctl: move property handling to shared/ 2015-03-11 10:37:45 +01:00
Zbigniew Jędrzejewski-Szmek
7933e4266f sysctl: downgrade message about sysctl overrides to debug
Printing it at info level was tedious. We don't do that for any other
overrides.
2015-02-26 19:06:45 -05:00
Umut Tezduyar Lindskog
b99802f769 sysctl: consider --prefix while parsing the files
not while applying the parsed sysctl values. Otherwise
info "Overwriting earlier assignment of %s in file %s" is
visible many times even though the given --prefix doesn't
try to set the overridden value.

This also optimizes the startup tiny bit since we have udev
rules running on network devices and setting sysctl through
the rules.
2015-02-07 12:19:37 -05:00
Michal Schmidt
56f64d9576 treewide: use log_*_errno whenever %m is in the format string
If the format string contains %m, clearly errno must have a meaningful
value, so we might as well use log_*_errno to have ERRNO= logged.

Using:
find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\((".*%m.*")/log_\1_errno(errno, \2/'

Plus some whitespace, linewrap, and indent adjustments.
2014-11-28 19:49:27 +01:00
Michal Schmidt
8d3d7072e6 treewide: a few more log_*_errno + return simplifications
The one in tmpfiles.c:create_item() even looks like it fixes a bug.
2014-11-28 19:17:24 +01:00
Michal Schmidt
da927ba997 treewide: no need to negate errno for log_*_errno()
It corrrectly handles both positive and negative errno values.
2014-11-28 13:29:21 +01:00
Michal Schmidt
0a1beeb642 treewide: auto-convert the simple cases to log_*_errno()
As a followup to 086891e5c1 "log: add an "error" parameter to all
low-level logging calls and intrdouce log_error_errno() as log calls
that take error numbers", use sed to convert the simple cases to use
the new macros:

find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\("(.*)%s"(.*), strerror\(-([a-zA-Z_]+)\)\);/log_\1_errno(-\4, "\2%m"\3);/'

Multi-line log_*() invocations are not covered.
And we also should add log_unit_*_errno().
2014-11-28 12:04:41 +01:00
Josh Triplett
7f0a55d432 Introduce CONF_DIRS_NULSTR helper to define standard conf dirs
Several different systemd tools define a nulstr containing a standard
series of configuration file directories, in /etc, /run, /usr/local/lib,
/usr/lib, and (#ifdef HAVE_SPLIT_USR) /lib.  Factor that logic out into
a new helper macro, CONF_DIRS_NULSTR.
2014-11-26 19:11:37 -05:00
David Herrmann
0e1f579227 sysctl: make --prefix allow all kinds of sysctl paths
Currently, we save arguments passed as --prefix directly and compare them
later to absolute sysctl file-system paths. That is, you are required to
specify arguments to --prefix with leading /proc/sys/. This is kinda
uselesss. Furthermore, we replace dots by slashes in the name, which makes
it impossible to match on specific sysfs paths that have dots in their
name (like netdev names). The intention of this argument is clear, but it
never worked as expected.

This patch modifies --prefix to accept any kind of sysctl paths. It
supports paths prefixed with /proc/sys for compatibility (but drops the
erroneous dot->slash conversion), but instead applies normalize_sysctl()
which turns any name or path into a proper path. It then appends
/proc/sys/ so we can properly use it in matches.

Thanks to Jan Synacek <jsynacek@redhat.com> for catching this!
2014-09-17 09:11:02 +02:00
Michal Schmidt
d5099efc47 hashmap: introduce hash_ops to make struct Hashmap smaller
It is redundant to store 'hash' and 'compare' function pointers in
struct Hashmap separately. The functions always comprise a pair.
Store a single pointer to struct hash_ops instead.

systemd keeps hundreds of hashmaps, so this saves a little bit of
memory.
2014-09-15 16:08:50 +02:00
Zbigniew Jędrzejewski-Szmek
601185b43d Unify parse_argv style
getopt is usually good at printing out a nice error message when
commandline options are invalid. It distinguishes between an unknown
option and a known option with a missing arg. It is better to let it
do its job and not use opterr=0 unless we actually want to suppress
messages. So remove opterr=0 in the few places where it wasn't really
useful.

When an error in options is encountered, we should not print a lengthy
help() and overwhelm the user, when we know precisely what is wrong
with the commandline. In addition, since help() prints to stdout, it
should not be used except when requested with -h or --help.

Also, simplify things here and there.
2014-08-03 21:46:07 -04:00
Zbigniew Jędrzejewski-Szmek
2e573fcf87 sysctl: replaces some slashes with dots
It turns out that plain sysctl understands a.b/c syntax to write to
/proc/sys/a/b.c. Support this for compatibility.

https://bugs.freedesktop.org/show_bug.cgi?id=77466
2014-04-16 21:52:36 -04:00
Josh Triplett
f8294e4175 Use strlen even for constant strings
GCC optimizes strlen("string constant") to a constant, even with -O0.
Thus, replace patterns like sizeof("string constant")-1 with
strlen("string constant") where possible, for clarity.  In particular,
for expressions intended to add up the lengths of components going into
a string, this often makes it clearer that the expression counts the
trailing '\0' exactly once, by putting the +1 for the '\0' at the end of
the expression, rather than hidden in a sizeof in the middle of the
expression.
2014-03-16 09:52:56 -04:00
Michael Marineau
4cf7ea556a shared: add root argument to search_and_fopen
This adds the same root argument to search_and_fopen that
conf_files_list already has. Tools that use those two functions as a
pair can now be easily modified to load configuration files from an
alternate root filesystem tree.
2014-03-14 09:31:34 -04:00
Zbigniew Jędrzejewski-Szmek
cc3d61683d Remove unused variables 2014-01-05 09:16:15 -05:00
Simon Peeters
e3e45d4f82 strv: multiple cleanups
- turn strv_merge into strv_extend_strv.
   appending strv b to the end of strv a instead of creating a new strv
- strv_append: remove in favor of strv_extend and strv_push.
- strv_remove: write slightly more elegant
- strv_remove_prefix: remove unused function
- strv_overlap: use strv_contains
- strv_printf: STRV_FOREACH handles NULL correctly
2014-01-05 09:16:15 -05:00
Lennart Poettering
9f6445e34a log: log_error() and friends add a newline after each line anyway, so avoid including it in the log strings 2013-12-24 16:39:37 +01:00
Karel Zak
4561be3a64 Remove duplicate includes 2013-11-18 20:28:55 -05:00
Lennart Poettering
eb9da376d7 clients: unify how we invoke getopt_long()
Among other things this makes sure we always expose a --version command
and show it in the help texts.
2013-11-06 18:28:39 +01:00
Kay Sievers
04bf3c1a60 sysctl: allow overwriting of values specified in "later" files 2013-08-15 18:43:31 +02:00
Zbigniew Jędrzejewski-Szmek
d3b6d0c21e fileio: in envfiles, do not skip lines following empty lines
https://bugs.freedesktop.org/show_bug.cgi?id=63477
2013-04-13 20:24:39 -04:00
Lennart Poettering
574d5f2dfc util: rename write_one_line_file() to write_string_file()
You can write much more than just one line with this call (and we
frequently do), so let's correct the naming.
2013-04-03 20:12:56 +02:00
Eelco Dolstra
6f6fad96ad systemd-sysctl: Handle missing /etc/sysctl.conf properly
Since fabe5c0e5f, systemd-sysctl returns
a non-zero exit code if /etc/sysctl.conf does not exist, due to a
broken ENOENT check.
2013-03-27 12:01:44 -04:00
Harald Hoyer
a5c32cff1f honor SELinux labels, when creating and writing config files
Also split out some fileio functions to fileio.c and provide a SELinux
aware pendant in fileio-label.c

see https://bugzilla.redhat.com/show_bug.cgi?id=881577
2013-02-14 16:19:38 +01:00
Zbigniew Jędrzejewski-Szmek
f04e95ba6b sysctl: fix uninitalized memory access in error path
src/sysctl/sysctl.c: In function ‘parse_file’:
src/sysctl/sysctl.c:172:41: warning: ‘property’ may be used uninitialized in this function [-Wmaybe-uninitialized]
2013-02-13 09:55:52 -05:00
Lennart Poettering
fabe5c0e5f binfmt,tmpfiles,modules-load,sysctl: rework the various early-boot services that work on .d/ directories
This unifies much of the logic behind them:

- All four will now ofllow the rule that the earlier file and earlier
  assignment in the .d/ directories wins. Before, sysctl was the only
  outlier, where the later setting always won.

- All four now support getopt() and --help on the command line.

- All four can now handle specification of configuration file names on
  the command line to apply. The tools will automatically find them, and
  apply them. Previously only tmpfiles could do that. This is useful for
  %post scripts in RPMs and suchlike.

- This fixes various error path issues in conf_files_list()
2013-02-11 23:54:30 +01:00
Kay Sievers
7850b3b837 shared: conf-files - add root parameter 2013-02-08 10:23:04 +01:00
Michal Sekletar
91b32fa987 sysctl: parse all keys in a config file
https://bugzilla.redhat.com/show_bug.cgi?id=869779
2012-10-26 01:12:22 +02:00
Dave Reisner
1a3f40f912 sysctl: avoiding exiting with error on -EEXIST
If the final key in any sysctl.d file is a duplicate, systemd-sysctl
will exit with an error (and no explaination why). Ignore this, as
duplicate keys are to be expected when overriding settings in the
directory hierarchy.
2012-10-06 16:41:30 -04:00
Lennart Poettering
0187f62bb5 sysctl: always return the last error we encountered 2012-09-21 17:03:40 +02:00
Lukas Nykryn
089d4a08d0 sysctl: fix error code handling
After  if (r <= 0) r can't  be 0 so
if (k < 0 && r == 0) never happens.
2012-09-21 16:12:47 +02:00
Michal Sekletar
86fc77c47f sysctl: apply configuration at once
https://bugzilla.redhat.com/show_bug.cgi?id=767795

[ Simplified by iterating the config files in the backwards order -
  no need for hashmap_update(). Other minor cleanups. -- michich ]
2012-08-06 18:24:05 +02:00
Shawn Landden
0d0f0c50d3 log.h: new log_oom() -> int -ENOMEM, use it
also a number of minor fixups and bug fixes: spelling, oom errors
that didn't print errors, not properly forwarding error codes,
few more consistency issues, et cetera
2012-07-26 11:48:26 +02:00
Shawn Landden
669241a076 use "Out of memory." consistantly (or with "\n")
glibc/glib both use "out of memory" consistantly so maybe we should
consider that instead of this.

Eliminates one string out of a number of binaries. Also fixes extra newline
in udev/scsi_id
2012-07-25 11:23:57 +02:00
Kay Sievers
9eb977db5b util: split-out path-util.[ch] 2012-05-08 02:33:10 +02:00
Kay Sievers
2c21044f05 util: split-out conf-file.[ch] 2012-05-07 19:01:24 +02:00
Lennart Poettering
b562f5a57d build-sys: add stub makefiles to all subdirs to ease development with emacs 2012-04-13 21:37:59 +02:00
Kay Sievers
dce818b390 move all tools to subdirs 2012-04-12 17:54:42 +02:00