signal.h: Look for _DEFAULT_SOURCE not __USE_GNU for sighandler_t.

Our features.h does not define __USE_GNU, and so applications trying
to use this GNU-ism would have to define it for themselves, even if
_GNU_SOURCE had already been specified.

Revert "Add sys/ucontext.h"

This reverts commit 6ddf93bfbec1ecec76cf119c50327f93f6d4fef8.

As pointed out by Ingo, those were moved to sugnal.h in the latest issue
(issue 7) of the POSIX spec. Sorry!

Add sys/ucontext.h

* Move ucontext_t and mcontext_t there as that's where POSIX says they
should be.

x86[_64]: Randomize initial stack pointer on alternative signal stacks

If the alternate signal stack is used randomize the initial stack
pointer in the same way it is randomized on "normal" thread stacks.
Also, update MINSIGSTKSZ value so that regardless of where the new
stack pointer points to there is at least 4k of stack left.

Rename some parameters to avoid "declaration of 'foo' shadows global declaration" warnings.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43048 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

Updated posix headers to remove commas from copyright line, to match the preferred coding guidelines.
Cleaned up some header style violations, making sure there are two blank lines after the header guards.
This fixes the posix header part of #2191.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39288 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Introduced new header directory "config", which ATM contains HaikuConfig.h
and types.h. The idea is to provide a basic architecture/compiler
abstraction by defining types and macros that allow the posix/ and os/
headers to be mostly architecture/compiler agnostic.
* Adjusted the posix/ and os/ headers accordingly.
* <SupportDefs.h>: Introduced B_PRI* and B_SCN* macros similar to the PRI*
and SCN* macros defined in <inttypes.h>, just for the BeOS/Haiku [u]int*
types and some POSIX types (e.g. off_t, dev_t, ino_t) that don't have POSIX
macros. Also the B_PRI* and B_SCN* macros are available unconditionally,
unlike the <inttypes.h> macros, which require __STDC_FORMAT_MACROS to be
defined in C++ mode.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34214 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixing #3460:
* resolved a couple of redundant function declaration in our public headers
* adjusted zipomatic accordingly - everything else built fine

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31938 a95241bf-73f2-0310-859d-f6bbb57e9c96

[GSoC] [ARM] Patch by Johannes Wischert.
Add ARM defines.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31693 a95241bf-73f2-0310-859d-f6bbb57e9c96

Adding mipsel arch.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30587 a95241bf-73f2-0310-859d-f6bbb57e9c96

* I obviously forgot to commit this: adds siginterrupt() prototype, and
does some minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28897 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Added sigpause().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25682 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Andreas Faerber:
Replaced single-line comments by multi-line comments for ANSI C
compliance.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25433 a95241bf-73f2-0310-859d-f6bbb57e9c96

Commented out real-time signal related stuff (SA_SIGINFO, waitid()) to
prevent "configure" scripts from thinking we do actually support it.
Having real-time signals would be nice though (cf. #1935).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24444 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis (modified by myself): Implemented sigset().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22947 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Implemented sigrelse().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22865 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Implemented sighold().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22846 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed inline versions of sigismember(), sigaddset(), and sigdelset(). They
weren't in sync with the non-inline version in libroot anymore, and aren't
really performance-critical anyway.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22827 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Implemented sigignore(). Small changes by myself.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22789 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add m68k to the big endian family.
Remove DOS CR from some files.
Add setjmp stuff for m68k (unfinished).
Moved arch specific stuff out of signal.h to arch/<arch>/signal.h
Added m68k vreg for signal.h (unfinished).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22703 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Implemented killpg().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22697 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some more work on the signal code:
* get_signal_stack() checked the wrong sig_action field (index is signal-1), also,
it had an off-by-one error in the stack range check.
* factored out a restart_syscall() function to avoid code duplication
* arch_setup_signal_frame() relied on the fact that vregs and the signal stack code
is a multiple of 4 bytes in size.
* Fixed sigaction(): it did return the error code directly instead of setting errno.
* signal() actually had a work-around for the broken sigaction()...
* Replaced the sig_func_t typedef with a sighandler_t typedef - this is non-standard
anyway, but now we're at least compatible with the GNU world instead of introducing
our own solution (BSD seems to use sig_t here, BTW).
* Removed now unused sigval structure from the header; it should be added again as
soon as we start supporting it.
* SA_RESETHAND and SA_ONESHOT are the same thing; the former did not work before.
* Made the non-standard SA_* flags refer to the standard ones instead of the other
way around.
* Added a test application for various signal features - works fine under Haiku,
tested also under Linux and BeOS (the latter fails as it does not support SA_RESTART).
More tests should be added, though.
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21999 a95241bf-73f2-0310-859d-f6bbb57e9c96

Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21986 a95241bf-73f2-0310-859d-f6bbb57e9c96

uint => unsigned int


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17852 a95241bf-73f2-0310-859d-f6bbb57e9c96

removed struct _pthread* forward declarations, they're not needed
added some more posix definitions, though they might be never used in Haiku


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17184 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixes that make Haiku build with gcc 4. Mainly out of the following
categories:
* Missing includes (like <stdlib.h> and <string.h>).
* Linking against $(TARGET_LIBSTDC++) instead of libstdc++.r4.so.
* Local variables shadowing parameters.
* Default parameters in function definitions (as opposed to function
declarations).
* All C++ stuff (nothrow, map, set, vector, min, max,...) must be imported
explicitly from the std:: namespace now.
* "new (sometype)[...]" must read "new sometype[...]", even if sometype is
something like "const char *".
* __FUNCTION__ is no longer a string literal (but a string expression), i.e.
'printf(__FUNCTION__ ": ...\n")' is invalid code.
* A type cast results in a non-lvalue. E.g. "(char *)buffer += bytes"
is an invalid expression.
* "friend class SomeClass" only works when SomeClass is known before.
Otherwise the an inner class with that name is considered as friend.
gcc 4 is much pickier about scopes.
* gcc 4 is generally stricter with respect to type conversions in C.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14878 a95241bf-73f2-0310-859d-f6bbb57e9c96

Applied a patch from Alexander Deynichenko: added missing signal definitions.
That also includes some XSI signals, SIGPOLL and SIGVTALRM, dunno if we will every support
those in a useful way.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14593 a95241bf-73f2-0310-859d-f6bbb57e9c96

added sigaddset, sigismember, sigdelset to libroot.so from inline versions in signal.h
moved static inline to extern inline to allow this change
please someone review this (ie are they platform dependent functions ?)
should fix bug #47


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14103 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added siginfo_t structure as required by ISO-C 99 - it's not yet used, though.
Smaller style cleanups.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8344 a95241bf-73f2-0310-859d-f6bbb57e9c96

some cleanup and reorganization:
- the inline functions I introduced earlier have been removed
- the notes about non-Posix extensions to the sigaction struct have been
updated, enlarged, and moved out of the way (near the bottom of the file)
- all the function prototypes have been collected and placed together
- a few more items have been commented
- in general, the organization of the whole file should be more tidy now (I hope)


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2003 a95241bf-73f2-0310-859d-f6bbb57e9c96

several fixups:
a new typedef for signal handlers - sig_func_t
(the old one is kept around for backwards compatibility)

a new macro MAX_SIGNO to get rid of magic 32's all about

two more functions (sigemptyset and sigfillset) are now
defined inline as well


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1975 a95241bf-73f2-0310-859d-f6bbb57e9c96

Signals, 2nd pass: syscall restarting now only works on EINTR (removed other exotic retcodes like ERESTARTSYS); signal handlers now receive 3 args, and the vregs struct is used to save the signal context, making the system beos compatible.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1681 a95241bf-73f2-0310-859d-f6bbb57e9c96

posix signals support, 1st pass


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1623 a95241bf-73f2-0310-859d-f6bbb57e9c96

Revert "Add sys/ucontext.h"

This reverts commit 6ddf93bfbec1ecec76cf119c50327f93f6d4fef8.

As pointed out by Ingo, those were moved to sugnal.h in the latest issue
(issue 7) of the POSIX spec. Sorry!

Add sys/ucontext.h

* Move ucontext_t and mcontext_t there as that's where POSIX says they
should be.

x86[_64]: Randomize initial stack pointer on alternative signal stacks

If the alternate signal stack is used randomize the initial stack
pointer in the same way it is randomized on "normal" thread stacks.
Also, update MINSIGSTKSZ value so that regardless of where the new
stack pointer points to there is at least 4k of stack left.

Rename some parameters to avoid "declaration of 'foo' shadows global declaration" warnings.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@43048 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

Updated posix headers to remove commas from copyright line, to match the preferred coding guidelines.
Cleaned up some header style violations, making sure there are two blank lines after the header guards.
This fixes the posix header part of #2191.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39288 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Introduced new header directory "config", which ATM contains HaikuConfig.h
and types.h. The idea is to provide a basic architecture/compiler
abstraction by defining types and macros that allow the posix/ and os/
headers to be mostly architecture/compiler agnostic.
* Adjusted the posix/ and os/ headers accordingly.
* <SupportDefs.h>: Introduced B_PRI* and B_SCN* macros similar to the PRI*
and SCN* macros defined in <inttypes.h>, just for the BeOS/Haiku [u]int*
types and some POSIX types (e.g. off_t, dev_t, ino_t) that don't have POSIX
macros. Also the B_PRI* and B_SCN* macros are available unconditionally,
unlike the <inttypes.h> macros, which require __STDC_FORMAT_MACROS to be
defined in C++ mode.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34214 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixing #3460:
* resolved a couple of redundant function declaration in our public headers
* adjusted zipomatic accordingly - everything else built fine

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31938 a95241bf-73f2-0310-859d-f6bbb57e9c96

[GSoC] [ARM] Patch by Johannes Wischert.
Add ARM defines.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31693 a95241bf-73f2-0310-859d-f6bbb57e9c96

Adding mipsel arch.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30587 a95241bf-73f2-0310-859d-f6bbb57e9c96

* I obviously forgot to commit this: adds siginterrupt() prototype, and
does some minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28897 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Added sigpause().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25682 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Andreas Faerber:
Replaced single-line comments by multi-line comments for ANSI C
compliance.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25433 a95241bf-73f2-0310-859d-f6bbb57e9c96

Commented out real-time signal related stuff (SA_SIGINFO, waitid()) to
prevent "configure" scripts from thinking we do actually support it.
Having real-time signals would be nice though (cf. #1935).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24444 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis (modified by myself): Implemented sigset().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22947 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Implemented sigrelse().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22865 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Implemented sighold().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22846 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed inline versions of sigismember(), sigaddset(), and sigdelset(). They
weren't in sync with the non-inline version in libroot anymore, and aren't
really performance-critical anyway.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22827 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Implemented sigignore(). Small changes by myself.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22789 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add m68k to the big endian family.
Remove DOS CR from some files.
Add setjmp stuff for m68k (unfinished).
Moved arch specific stuff out of signal.h to arch/<arch>/signal.h
Added m68k vreg for signal.h (unfinished).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22703 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis: Implemented killpg().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22697 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some more work on the signal code:
* get_signal_stack() checked the wrong sig_action field (index is signal-1), also,
it had an off-by-one error in the stack range check.
* factored out a restart_syscall() function to avoid code duplication
* arch_setup_signal_frame() relied on the fact that vregs and the signal stack code
is a multiple of 4 bytes in size.
* Fixed sigaction(): it did return the error code directly instead of setting errno.
* signal() actually had a work-around for the broken sigaction()...
* Replaced the sig_func_t typedef with a sighandler_t typedef - this is non-standard
anyway, but now we're at least compatible with the GNU world instead of introducing
our own solution (BSD seems to use sig_t here, BTW).
* Removed now unused sigval structure from the header; it should be added again as
soon as we start supporting it.
* SA_RESETHAND and SA_ONESHOT are the same thing; the former did not work before.
* Made the non-standard SA_* flags refer to the standard ones instead of the other
way around.
* Added a test application for various signal features - works fine under Haiku,
tested also under Linux and BeOS (the latter fails as it does not support SA_RESTART).
More tests should be added, though.
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21999 a95241bf-73f2-0310-859d-f6bbb57e9c96

Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21986 a95241bf-73f2-0310-859d-f6bbb57e9c96

uint => unsigned int


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17852 a95241bf-73f2-0310-859d-f6bbb57e9c96

removed struct _pthread* forward declarations, they're not needed
added some more posix definitions, though they might be never used in Haiku


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17184 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fixes that make Haiku build with gcc 4. Mainly out of the following
categories:
* Missing includes (like <stdlib.h> and <string.h>).
* Linking against $(TARGET_LIBSTDC++) instead of libstdc++.r4.so.
* Local variables shadowing parameters.
* Default parameters in function definitions (as opposed to function
declarations).
* All C++ stuff (nothrow, map, set, vector, min, max,...) must be imported
explicitly from the std:: namespace now.
* "new (sometype)[...]" must read "new sometype[...]", even if sometype is
something like "const char *".
* __FUNCTION__ is no longer a string literal (but a string expression), i.e.
'printf(__FUNCTION__ ": ...\n")' is invalid code.
* A type cast results in a non-lvalue. E.g. "(char *)buffer += bytes"
is an invalid expression.
* "friend class SomeClass" only works when SomeClass is known before.
Otherwise the an inner class with that name is considered as friend.
gcc 4 is much pickier about scopes.
* gcc 4 is generally stricter with respect to type conversions in C.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14878 a95241bf-73f2-0310-859d-f6bbb57e9c96

Applied a patch from Alexander Deynichenko: added missing signal definitions.
That also includes some XSI signals, SIGPOLL and SIGVTALRM, dunno if we will every support
those in a useful way.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14593 a95241bf-73f2-0310-859d-f6bbb57e9c96

added sigaddset, sigismember, sigdelset to libroot.so from inline versions in signal.h
moved static inline to extern inline to allow this change
please someone review this (ie are they platform dependent functions ?)
should fix bug #47


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14103 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added siginfo_t structure as required by ISO-C 99 - it's not yet used, though.
Smaller style cleanups.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8344 a95241bf-73f2-0310-859d-f6bbb57e9c96

some cleanup and reorganization:
- the inline functions I introduced earlier have been removed
- the notes about non-Posix extensions to the sigaction struct have been
updated, enlarged, and moved out of the way (near the bottom of the file)
- all the function prototypes have been collected and placed together
- a few more items have been commented
- in general, the organization of the whole file should be more tidy now (I hope)


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2003 a95241bf-73f2-0310-859d-f6bbb57e9c96

several fixups:
a new typedef for signal handlers - sig_func_t
(the old one is kept around for backwards compatibility)

a new macro MAX_SIGNO to get rid of magic 32's all about

two more functions (sigemptyset and sigfillset) are now
defined inline as well


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1975 a95241bf-73f2-0310-859d-f6bbb57e9c96

Signals, 2nd pass: syscall restarting now only works on EINTR (removed other exotic retcodes like ERESTARTSYS); signal handlers now receive 3 args, and the vregs struct is used to save the signal context, making the system beos compatible.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1681 a95241bf-73f2-0310-859d-f6bbb57e9c96

posix signals support, 1st pass


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1623 a95241bf-73f2-0310-859d-f6bbb57e9c96