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2014-08-11bootchart: use the bool type where appropriateLennart Poettering
2014-08-11bootchart: it's not OK to return -1 from a main programLennart Poettering
2014-08-03Unify parse_argv styleZbigniew Jędrzejewski-Szmek
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.
2014-08-03bootchart: ask for --rel when failed to initialize graph start timeKarel Zak
We always read system uptime before log start time. So the uptime should be always smaller number, except it includes system suspend time. It seems better to ask for --rel and exit() than try to be smart and try to recovery from this situation or generate huge messy graphs.
2014-08-03bootchart: don't parse /proc/uptime, use CLOCK_BOOTTIMEKarel Zak
* systemd-bootchart always parses /proc/uptime, although the information is unnecessary when --rel specified * use /proc/uptime is overkill, since Linux 2.6.39 we have clock_gettime(CLOCK_BOOTTIME, ...). The backend on kernel side is get_monotonic_boottime() in both cases. * main() uses "if (graph_start <= 0.0)" to detect that /proc is available. This is fragile solution as graph_start is always smaller than zero on all systems after suspend/resume (e.g. laptops), because in this case the system uptime includes suspend time and uptime is always greater number than monotonic time. For example right now difference between uptime and monotonic time is 37 hours on my laptop. Note that main() calls log_uptime() (to parse /proc/uptime) for each sample when it believes that /proc is not available. So on my laptop systemd-boochars spends all live with /proc/uptime parsing + nanosleep(), try strace /usr/lib/systemd/systemd-bootchart to see the never ending loop. This patch uses access("/proc/vmstat", F_OK) to detect procfs.
2014-07-31Always prefer our headers to system headersZbigniew Jędrzejewski-Szmek
In practice this shouldn't make much difference, but sometimes our headers might be newer, and we want to test them.
2014-07-31Constify option table and add missing optionZbigniew Jędrzejewski-Szmek
2014-07-16Let config_parse open file where applicableZbigniew Jędrzejewski-Szmek
Special care is needed so that we get an error message if the file failed to parse, but not when it is missing. To avoid duplicating the same error check in every caller, add an additional 'warn' boolean to tell config_parse whether a message should be issued. This makes things both shorter and more robust wrt. to error reporting.
2014-07-15Constify ConfigTableItem tablesZbigniew Jędrzejewski-Szmek
2014-06-19bootchart: add assertThomas Hindoe Paaboel Andersen
since 376cd3b89c62f580a6f576cecfbbb28d3944118f LIST_FIND_TAIL accepts an empty list. That removed an assert in LIST_FIND_TAIL and we now theoretically risk a null pointer deref. This adds the assert directly to protect against that.
2014-06-17bootchart: set white backgroundFrederic Crozat
In programs like eog and gimp the transparant background did not look very good. Similar fix from the one done in systemd-analyze (418e3750)
2014-06-13os-release: define /usr/lib/os-release as fallback for /etc/os-releaseLennart Poettering
The file should have been in /usr/lib/ in the first place, since it describes the OS container in /usr (and not the configuration in /etc), hence, let's support os-release files in /usr/lib as fallback if no version in /etc exists, following the usual override logic. A prior commit already enabled tmpfiles to create /etc/os-release as a symlink to /usr/lib/os-release should it be missing, thus providing nice compatibility with applications only checking in /etc. While it's probably a good idea if all apps check both locations via a fallback logic, it is only necessary in the early boot process, as long as the /etc/os-release symlink has not been restored, in case we boot with an empty /etc.
2014-04-24bootchart: print to stdout and display default values in helpZbigniew Jędrzejewski-Szmek
2014-04-24bootchart: rewrite usage message more generallyWaLyong Cho
2014-04-24bootchart: add control group optionWaLyong Cho
2014-02-24Remove dead lines in various placesZbigniew Jędrzejewski-Szmek
As pointed-out by clang -Wunreachable-code. No behaviour changes.
2014-02-13everywhere: always use O_CLOEXEC where it makes senseLennart Poettering
2014-02-13everywhere: make use of new0() and macro() macros, and stop using perror()Lennart Poettering
2014-01-31use memzero(foo, length); for all memset(foo, 0, length); callsGreg KH
In trying to track down a stupid linker bug, I noticed a bunch of memset() calls that should be using memzero() to make it more "obvious" that the options are correct (i.e. 0 is not the length, but the data to set). So fix up all current calls to memset(foo, 0, length) to memzero(foo, length).
2013-12-30bootchart: Remove unneeded check for NULLStefan Beller
Directly before the changed line there is: while ((parent->next_ps && parent->pid != ps->ppid)) parent = parent->next_ps; which looks one element ahead of the list, hence we can rely on parent being non null here. If 'parent' were NULL at that while loop already, it would crash as we're dereferencing 'parent' when checking for next_ps already. Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
2013-12-24log: log_error() and friends add a newline after each line anyway, so avoid ↵Lennart Poettering
including it in the log strings
2013-12-10Bring bootchart code in line with CODING_STYLEDan McGee
Use double and not float, as there is little to no benefit.
2013-12-08bootchart: remove dead assignmentThomas Hindoe Paaboel Andersen
2013-12-03trivial coding style clean upsThomas Hindoe Paaboel Andersen
- Add space between if/for and the opening parentheses - Place the opening brace on same line as the function (not for udev) From the CODING_STYLE Try to use this: void foo() { } instead of this: void foo() { }
2013-10-15Fix for SIGSEGV in systemd-bootchart on short-living processesIgor Zhbanov
The function svg_ps_bars() dereferencess NULL pointer in the line endtime = ps->last->sampledata->sampletime; because of partially initialized ps_struct (ps->last == NULL). If some process terminates between scaning /proc directory in the log_sample() function and reading additional information from /proc/PID/... files, the files couldn't be read, the loop will be continued and partially initialized structure returned.
2013-10-14list: make our list macros a bit easier to use by not requring type spec on ↵Lennart Poettering
each invocation We can determine the list entry type via the typeof() gcc construct, and so we should to make the macros much shorter to use.
2013-10-13Fix write-only use of a few variablesZbigniew Jędrzejewski-Szmek
Since the invention of read-only memory, write-only memory has been considered deprecated. Where appropriate, either make use of the value, or avoid writing it, to make it clear that it is not used.
2013-08-14bootchart: remove +x permissions on .c fileZbigniew Jędrzejewski-Szmek
2013-06-12bootchart: fix typos in copyright noticesJason St. John
"Corporation" was misspelled as "Coproration"
2013-05-02bootchart: cleanup unused structs and globalsAuke Kok
2013-05-02Dynamically allocate bootchart logsNathaniel Chen
Instead of storing bootchart sample data in arrays, this patch moves storage to linked lists so that there is no more limit on samples. This patch also fixes parsing of /proc/<pid>/smaps in kernels > 3.7.
2013-04-25conf-parser: restrict .include usageLennart Poettering
Disallow recursive .include, and make it unavailable in anything but unit files.
2013-04-18move _cleanup_ attribute in front of the typeHarald Hoyer
http://lists.freedesktop.org/archives/systemd-devel/2013-April/010510.html
2013-04-17bootchart: Fix errno usage.Auke Kok
2013-04-17Report about syntax errors with metadataZbigniew Jędrzejewski-Szmek
The information about the unit for which files are being parsed is passed all the way down. This way messages land in the journal with proper UNIT=... or USER_UNIT=... attribution. 'systemctl status' and 'journalctl -u' not displaying those messages has been a source of confusion for users, since the journal entry for a misspelt setting was often logged quite a bit earlier than the failure to start a unit. Based-on-a-patch-by: Oleksii Shevchuk <alxchk@gmail.com>
2013-04-15bootchart: put the bootchart into the journal.Auke Kok
This bit of code is mostly stolen from coredump.c. We construct a simple journal message and append the bootchart file in the journal automatically. You can extract the latest bootchart from the current boot with something like: $ journalctl -b MESSAGE_ID=9f26aa562cf440c2b16c773d0479b518 --field=BOOTCHART which prints it to stdout. None of the other logic is touched. The journal entry is created even if bootchart was run manually, which is probably wrong.
2013-04-10Use initalization instead of explicit zeroing in more placesZbigniew Jędrzejewski-Szmek
2013-04-01Always use our own MAX/MIN definitionsCristian Rodríguez
code in src/shared/macro.h only defined MAX/MIN in case they were not defined previously. however the MAX/MIN macros implemented in glibc are not of the "safe" kind but defined as: define MIN(a,b) (((a)<(b))?(a):(b)) define MAX(a,b) (((a)>(b))?(a):(b)) Avoid nasty side effects by using our own versions instead. Also fix the warnings derived from this change. [zj: - modify MAX3 macro to fix warning about _a shadowing _a, - do bootchart/svg.c too, - remove unused MIN3.]
2013-03-31bootchart: fix a potential buffer overrunZbigniew Jędrzejewski-Szmek
If the configured number of samples was close to MAXSAMPLES, the samples buffer could be overrun: - by 1, because of off-by-one in the condition (samples > arg_samples_len), and - by many in case of an overrun, because the number of samples to capture was increased, instead of being decreased. Simplify things by converting to a normal for-loop. In store.c: change buffer size from 4095 to 4096. 4095 is a strange number.
2013-03-31bootchart: split out option parsing from main()Zbigniew Jędrzejewski-Szmek
2013-03-31Remove some dead codeZbigniew Jędrzejewski-Szmek
Based on coverity report.
2013-03-28bootchart: properly terminate stringZbigniew Jędrzejewski-Szmek
systemd-199/src/bootchart/store.c:289: buffer_size_warning: Calling strncpy with a maximum size argument of 256 bytes on destination array "ps->name" of size 256 bytes might leave the destination string unterminated. ...and indeed, the string was used as NULL-terminated later on. pid_cmdline_strncpy is renamed to pid_cmdline_strscpy to commemorate the fact that it *does* properly terminate the string.
2013-03-21bootchart: fix two unitialized memory freesZbigniew Jędrzejewski-Szmek
The new gcc isn't bad! In file included from src/bootchart/svg.c:36:0: src/bootchart/svg.c: In function 'svg_ps_bars': ./src/shared/util.h:524:13: warning: 'enc_name' may be used uninitialized in this function [-Wmaybe-uninitialized] free(*(void**) p); ^ src/bootchart/svg.c:821:37: note: 'enc_name' was declared here char _cleanup_free_*enc_name; ^ CC src/udev/mtd_probe/mtd_probe-probe_smartmedia.o XSLT man/systemd.unit.5 In file included from src/bootchart/svg.c:36:0: src/bootchart/svg.c: In function 'svg_pss_graph': ./src/shared/util.h:524:13: warning: 'enc_name' may be used uninitialized in this function [-Wmaybe-uninitialized] free(*(void**) p); ^ src/bootchart/svg.c:395:37: note: 'enc_name' was declared here char _cleanup_free_*enc_name; ^
2013-03-11bootchart: bump RLIMIT_NOFILE only after we forked us off, so that the init ↵Lennart Poettering
system inherits the kernel default
2013-03-11bootchart: various superficial cleanupsLennart Poettering
Let's update bootchar to share the coding style a bit more with the rest of the package. - Some tabs/spaces fixes - add #pragma to header - split up header so that we have a 1:1 relation between .c and .h files like everywhere else - Prefix user command line arguments/configuration settings with "arg_". - other coding style fixes
2013-03-11bootchart: rename log.c to store.c to aovid confusion with src/shared/log.cLennart Poettering
2013-03-07Revert "bootchart: use _cleanup_close_"Zbigniew Jędrzejewski-Szmek
This reverts commit 0ea9530d401827e299c6e04a433e69a7a2a89d80. attribute(cleanup) can only be used inside functions (*of, sysfd are leaked). Cleanup functions are only called once when exiting scope (*f is leaked twice).
2013-03-07bootchart: use _cleanup_close_Nathaniel Chen
use _cleanup_{close_,fclose_} to close streams and file descriptors
2013-03-07bootchart: document -C, --cmdline parameterHarald Hoyer
2013-03-07bootchart: use _cleanup_fclose_Harald Hoyer