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path: root/src/bootchart/bootchart.c
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2015-09-09Merge pull request #1218 from poettering/safe-fcloseDaniel Mack
util: introduce safe_fclose() and port everything over to it
2015-09-09util: introduce safe_fclose() and port everything over to itLennart Poettering
Adds a coccinelle script to port things over automatically.
2015-09-09tree-wide: update empty-if coccinelle script to cover empty-while and moreLennart Poettering
Let's also clean up single-line while and for blocks.
2015-09-09tree-wide: drop {} from one-line if blocksLennart Poettering
Patch via coccinelle.
2015-08-03tree-wide: convert bootchart and lldp code to use clock_boottime_or_monotonic()Lennart Poettering
We should avoid using CLOCK_BOOTTIME directly unless we actually can sensible distuingish it from CLOCK_MONOTONIC. CLOCK_BOOTTIME is only fully feature on very recent Linux kernels, hence we should stick to a fallback logic, which is already available in the clock_boottime_or_monotonic() call.
2015-07-21bootchart: fix negative 'timeleft' conditionDaniel Mack
Fix the overrun case in sample acquistion and negative number calculations. Reported by Stefan Sauer. Fixes #642
2015-06-05systemd-bootchart: Trivial typo fix in warningGianpaolo Macario
Signed-off-by: Gianpaolo Macario <gmacario@gmail.com>
2015-04-24bootchart: kill newline characters from log_error_errno() callsDaniel Mack
2015-04-03bootchart: assorted coding style fixesDaniel Mack
* kill unnecessary {} * add newlines where appropriate * remove dead code * reorder variable declarations * fix more return code logic * pass O_CLOEXEC to all open*() calles * use safe_close() where possible
2015-04-03bootchart: kill a bunch of global variablesDaniel Mack
This code is in a confusingly bad shape. Kill a bunch of global variables and pass needed variables around in function calls.
2015-04-03bootchart: clean up sysfd and proc handlingDaniel Mack
Retrieve the handle to procfs in main(), and pass it functions that need it. Kill the global variables. Also, refactor lots of code in svg_title(). There's no need to access any global variables from there either, and we really should return proper errors from there as well.
2015-04-03bootchart: clean up control flow logicDaniel Mack
Don't blindly exit() from random functions, but return a proper error and upchain error conditions. squash! bootchart: clean up control flow logic When pread() returns "0", it's a read failure, so don't make the caller think log_sample() was successful, return meaningful error code instead of 0.
2015-04-03bootchart: switch to log_* helpersDaniel Mack
Let the helper functions take care of the string message output.
2015-03-30systemd-bootchart: Prevent closing random file descriptorsAlexander Sverdlin
If the kernel has no CONFIG_SCHED_DEBUG option set, systemd-bootchart produces empty .svg file. The reason for this is very fragile file descriptor logic in log_sample() and main() (/* do some cleanup, close fd's */ block). There are many places where file descriptors are closed on failure (missing SCHED_DEBUG provokes it), but there are several problems with it: - following iterations in the loop see that the descriptor is non zero and do not open the corresponding file again; - "some cleanup" code closes already closed files and the descriptors are reused already, in particular for resulting .svg file; - static "vmstat" and "schedstat" variables in log_sample() made the situation even worse. These are the strace fragments: [...] close(7) = -1 EBADF (Bad file descriptor) close(-1) = -1 EBADF (Bad file descriptor) pread(7, 0xbea60a2c, 4095, 0) = -1 EBADF (Bad file descriptor) close(7) = -1 EBADF (Bad file descriptor) close(-1) = -1 EBADF (Bad file descriptor) pread(7, 0xbea60a2c, 4095, 0) = -1 EBADF (Bad file descriptor) close(7) = -1 EBADF (Bad file descriptor) close(-1) = -1 EBADF (Bad file descriptor) getdents64(4, /* 0 entries */, 32768) = 0 clock_gettime(CLOCK_MONOTONIC, {24, 783843501}) = 0 nanosleep({0, 5221792}, NULL) = 0 clock_gettime(CLOCK_MONOTONIC, {24, 789726835}) = 0 lseek(4, 0, SEEK_SET) = 0 pread(5, "nr_free_pages 52309\nnr_alloc_bat"..., 4095, 0) = 685 pread(6, "version 15\ntimestamp 4294939775\n"..., 4095, 0) = 86 getdents64(4, /* 99 entries */, 32768) = 2680 pread(7, 0xbea60a2c, 4095, 0) = -1 EBADF (Bad file descriptor) close(7) = -1 EBADF (Bad file descriptor) close(-1) = -1 EBADF (Bad file descriptor) pread(8, 0xbea60a2c, 4095, 0) = -1 EBADF (Bad file descriptor) close(8) = -1 EBADF (Bad file descriptor) close(-1) = -1 EBADF (Bad file descriptor) pread(9, 0xbea60a2c, 4095, 0) = -1 EBADF (Bad file descriptor) close(9) = -1 EBADF (Bad file descriptor) [...] where it obviously tries to close same and reused decriptors many times, also passing return code "-1" instead of descriptor... [...] close(7) = -1 EBADF (Bad file descriptor) close(-1) = -1 EBADF (Bad file descriptor) pipe2([7, 8], O_CLOEXEC) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb6fd0068) = 192 close(8) = 0 fcntl64(7, F_SETFD, 0) = 0 fstat64(7, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6fd2000 read(7, "[ 0.074507] calling vfp_init"..., 4096) = 4096 [...] read(7, "s)\n[ 6.228910] UBIFS: reserve"..., 4096) = 4096 read(7, "trary Executable File Formats Fi"..., 4096) = 1616 read(7, "", 4096) = 0 close(7) = 0 wait4(192, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 192
2015-03-24bootchart: remove duplicated code, prevent creating empty filesShawn Landden
In Debian and rawhide Fedora, which have CONFIG_SCHEDSTATS=n, bootchart creates empty files in /run/log before printing an error. Stop doing that. Moreover this duplicated part of the code doesn't even have error checking so there is no error avoided by doing this early. Reported-by: tfirg_ on IRC
2015-03-10Add type specifier for intThomas Hindoe Paaboel Andersen
2015-03-09bootchart: use _cleanup_Zbigniew Jędrzejewski-Szmek
2015-02-24bootchart: fix default init pathMartin Pitt
Commit 6e1bf7ab99 used the wrong directory; we need rootlibexecdir, not rootlibdir, as the latter is something like /lib/x86_64-linux-gnu/ on multi-arch systems. https://launchpad.net/bugs/1423867
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.
2015-02-14bootchart: display each CPU utilization/waitWaLyong Cho
2015-02-02bootchart: Ensure that systemd is the init called after using bootchartSebastien Bacher
When booting with systemd-bootchart, default to call the systemd binary rather than the init binary on disk, which might be another init system. Collecting data only works with booting systemd.
2014-11-29bootchart: Support bootchart.conf.d directories in the usual search pathsJosh Triplett
2014-11-28treewide: use log_*_errno whenever %m is in the format stringMichal Schmidt
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.
2014-11-28treewide: more log_*_errno() conversions, multiline callsMichal Schmidt
Basically: find . -name '*.[ch]' | while read f; do perl -i.mmm -e \ 'local $/; local $_=<>; s/log_(debug|info|notice|warning|error|emergency)\("([^"]*)%s"([^;]*),\s*strerror\(-?([->a-zA-Z_]+)\)\);/log_\1_errno(\4, "\2%m"\3);/gms;print;' \ $f; done Plus manual indentation fixups.
2014-11-28treewide: no need to negate errno for log_*_errno()Michal Schmidt
It corrrectly handles both positive and negative errno values.
2014-11-28treewide: auto-convert the simple cases to log_*_errno()Michal Schmidt
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().
2014-10-03bootchart: use 'n/a' if PRETTY_NAME is not foundThomas Hindoe Paaboel Andersen
Spotted with coverity. If parsing both /etc/os-release and /usr/lib/os-release fails then null would be passed on. The calls to parse the two files are allowed to fail. A empty /etc may not have had the /etc/os-release symlink restored yet and we just try again in the loop. If for whatever reason that does not happen then we now pass on 'n/a' instead of null.
2014-09-28bootchart: check return of strftimeThomas Hindoe Paaboel Andersen
Found by coverity. Fixes: CID#996314 and #996312
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
2014-06-13os-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
2013-12-24log: log_error() and friends add a newline after each line anyway, so avoid ↵Lennart Poettering
including it in the log strings
2013-12-03trivial 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() { }
2013-10-14list: 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.
2013-06-12bootchart: fix typos in copyright noticesJason St. John
"Corporation" was misspelled as "Coproration"
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.