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path: root/src/shared/macro.h
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2013-05-17bus: add APIs for negotiating what is attached to messagesLennart Poettering
2013-05-14bus: add and use UINT64_TO_PTR()Kay Sievers
2013-04-25Make up for attribute malloc with alloc_sizeZbigniew Jędrzejewski-Szmek
It is imperative that open source code be well attributed. Sprinkle attribute((alloc_size)) here and there, telling gcc how much memory we are actually allocating.
2013-04-19Reintroduce f_type comparison macroHarald Hoyer
This reverts commit 4826f0b7b5c0aefa08b8cc7ef64d69027f84da2c. Because statfs.t_type can be int on some architecures, we have to cast the const magic to the type, otherwise the compiler warns about signed/unsigned comparison, because the magic can be 32 bit unsigned. statfs(2) man page is also wrong on some systems, because f_type is not __SWORD_TYPE on some architecures. The following program: int main(int argc, char**argv) { struct statfs s; statfs(argv[1], &s); printf("sizeof(f_type) = %d\n", sizeof(s.f_type)); printf("sizeof(__SWORD_TYPE) = %d\n", sizeof(__SWORD_TYPE)); printf("sizeof(long) = %d\n", sizeof(long)); printf("sizeof(int) = %d\n", sizeof(int)); if (sizeof(s.f_type) == sizeof(int)) { printf("f_type = 0x%x\n", s.f_type); } else { printf("f_type = 0x%lx\n", s.f_type); } return 0; } executed on s390x gives for a btrfs: sizeof(f_type) = 4 sizeof(__SWORD_TYPE) = 8 sizeof(long) = 8 sizeof(int) = 4 f_type = 0x9123683e
2013-04-18Revert f_type fixupsHarald Hoyer
This reverts commit a858b64dddf79177e12ed30f5e8c47a1471c8bfe. This reverts commit aea275c43194b6ac519ef907b62c5c995050fde0. This reverts commit fc6e6d245ee3989c222a2a8cc82a33475f9922f3. This reverts commit c4073a27c555aeceac87a3b02a83141cde641a1e. This reverts commit cddf148028f525be8176e7f1cbbf4f862bd287f6. This reverts commit 8c68a70170b31f93c287f29fd06c6c17edaf19ad. The constants are now casted to __SWORD_TYPE, which should resolve the compiler warnings about signed vs unsigned. After talking to Kay, we concluded: This should be fixed in the kernel, not worked around in userspace tools. Architectures cannot use int and expect magic constants lager than INT_MAX to work correctly. The kernel header needs to be fixed. Even coreutils cannot handle it: #define RAMFS_MAGIC 0x858458f6 # stat -f -c%t / ffffffff858458f6 #define BTRFS_SUPER_MAGIC 0x9123683E # stat -f -c%t /mnt ffffffff9123683e Although I found the perfect working macro to fix the thing :) __extension__ ({ \ bool _ret = false; \ switch(f) { case c: _ret=true; }; \ ( _ret ); \ })
2013-04-18macro.h: let F_TYPE_CMP() macro fail to compile, if second parameter is not ↵Harald Hoyer
const If the magic parameter is not a const, then the macro does not work, so better fail to compile, than be surprised afterwards.
2013-04-18rename CMP_F_TYPE to F_TYPE_CMPHarald Hoyer
2013-04-18Add ugly CMP_F_TYPE() macroHarald Hoyer
On some architectures (like s390x) the kernel has the type int for f_type, but long in userspace. Assigning the 32 bit magic constants from linux/magic.h to the 31 bit signed f_type in the kernel, causes f_type to be negative for some constants. glibc extends the int to long for those architecures in 64 bit mode, so the negative int becomes a negative long, which cannot be simply compared to the original magic constant, because the compiler would automatically cast the constant to long. To workaround this issue, we also compare to the (int)MAGIC value in a macro. Of course, we could do #ifdef with the architecure, but it has to be maintained, and the magic constants are 32 bit anyway. Someday, when the int is unsigned or long for all architectures, we can remove this macro again. Until then, keep it as simple as it can be.
2013-04-16util: make generation of profcs PID paths nicerLennart Poettering
2013-04-16macro: rework how we define cleanup macrosLennart Poettering
There's now a generic _cleanup_ macro with an argument. The macros for specific types are now defined using this macro, and in the header files where they belong. All cleanup handlers are now inline functions.
2013-04-12bus: don't calculate kmsg message too largeLennart Poettering
2013-04-11macro: make sure ALIGN() can be calculated constant by the compilerLennart Poettering
If we pass a constant value to ALIGN() gcc should have the chance to calculate the value during compilation rather than runtime, so let's avoid a static inline call if we can.
2013-04-02macro: add macro for precisely determining length of decimal string ↵Lennart Poettering
formatting of a numeric type
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.]
2013-03-26tests: skip bus test if bus cannot be openedZbigniew Jędrzejewski-Szmek
To make the result more visible, special return value is used to tell automake that the test was skipped. While at it, use the same return value in other skipped tests.
2013-03-20macro: add CHAR_TO_STR macro to make a one character string from a charLennart Poettering
2013-03-20macro: don't redefine CLAMP if it is already defined by glib or some other ↵Lennart Poettering
library
2013-03-18journal,shared: add _cleanup_journal_close_Zbigniew Jędrzejewski-Szmek
2013-01-29shared: introduce _cleanup_set_free_free_Zbigniew Jędrzejewski-Szmek
2013-01-25Add _cleanup_pclose_ and fix mismatching pipe close opened by popen()Zbigniew Jędrzejewski-Szmek
Based-on-patch-by: Thomas Jarosch <thomas.jarosch@intra2net.com> cppcheck reported: [src/bootchart/svg.c:791]: (error) Mismatching allocation and deallocation: f
2013-01-07localectl: use automatic cleanupZbigniew Jędrzejewski-Szmek
set_freep() is added to automatize set_free().
2012-12-31macro: use C11 static_assert() macro for static assertionsLennart Poettering
2012-10-17timedatectl: introduce new command line client for timedatedLennart Poettering
Much like logind has a client in loginctl, and journald in journalctl introduce timedatectl, to change the system time (incl. RTC), timezones and related settings.
2012-09-24macro: increase VA_FORMAT_ADVANCE type array and hit assert when it is reachedLennart Poettering
2012-09-24log: fix repeated invocation of vsnprintf()/vaprintf() in log_struct()Lennart Poettering
https://bugs.freedesktop.org/show_bug.cgi?id=55213
2012-09-16nspawn: use automatic cleanup for umaskZbigniew Jędrzejewski-Szmek
2012-09-14util: various additional modernizationsLennart Poettering
2012-09-14util: modernize a few functions with automatic cleanup variablesLennart Poettering
Just trying to get the feel for it. And it's pretty cool.
2012-09-13macro: introduce _cleanup_free_ macro for automatic freeing of scoped vars ↵Lennart Poettering
and make use of it
2012-07-19use #pragma once instead of foo*foo #define guardsShawn Landden
#pragma once has been "un-deprecated" in gcc since 3.3, and is widely supported in other compilers. I've been using and maintaining (rebasing) this patch for a while now, as it annoyed me to see #ifndef fooblahfoo, etc all over the place, almost arrogant about the annoyance of having to define all these names to perform a commen but neccicary functionality, when a completely superior alternative exists. I havn't sent it till now, cause its kindof a style change, and it is bad voodoo to mess with style that has been established by more established editors. So feel free to lambast me as a crazy bafoon. v2 - preserve externally used headers
2012-07-15journal: align byte-buffer that gets cased to an objectKay Sievers
On Sun, Jul 15, 2012 at 2:00 PM, Koen Kooi <koen@dominion.thruhere.net> wrote: > | src/journal/sd-journal.c: In function 'sd_journal_process': > | src/journal/sd-journal.c:1891:21: warning: cast increases required alignment of target type [-Wcast-align] > | src/journal/sd-journal.c:1900:29: warning: cast increases required alignment of target type [-Wcast-align]
2012-05-08util: split-out hwclock.[ch]Kay Sievers
2012-04-12relicense to LGPLv2.1 (with exceptions)Lennart Poettering
We finally got the OK from all contributors with non-trivial commits to relicense systemd from GPL2+ to LGPL2.1+. Some udev bits continue to be GPL2+ for now, but we are looking into relicensing them too, to allow free copy/paste of all code within systemd. The bits that used to be MIT continue to be MIT. The big benefit of the relicensing is that closed source code may now link against libsystemd-login.so and friends.
2012-04-10move list.h, macro.h, ioprio.h to shared/Kay Sievers