more extern decls

tidy up some extern declarations

PR/57250: Martin Husemann: dtoa mishandles infinite doubles on 32bit big
endian machines. When long double support was added, the old code was kept
for the regular double code. This code was never used because WIDE_DOUBLE
was always defined in the Makefile. Remove that old code, and conditionalize
the WIDE_DOUBLE code based on if long doubles are different than doubles on
the specific platform.

branches: 1.26.6;
Hook up proper fork lock handling for malloc:
- lock all relevant mutexes just before fork
- unlock all mutexes just after fork in the parent
- full reinit non-spinlocks in the child
This is not using the normal pthread_atfork interface to ensure order of
operation, malloc is used as implementation detail too often.

put back strerror_ss, it will be used shortly.

Add strerror_ss_r to be used by syslog_ss

branches: 1.23.8;
Add strerror_l.

move prototypes to stdio.h

take care of the signal safe syslog calls which are not exposed.

branches: 1.20.2;
setcontext() used to be incompatible with -lpthread since it affected
the TLS pointer, therefore wrecking the pthread environement.

Some ports had _UC_TLSBASE flag or equivalent (_UC_UNIQUE on alpha)
that controlled whether setcontext() would change the TLS pointer.
This change let libpthread override setcontext() with its own version
that unsets _UC_TLSBASE, enabling safe usage of setcontext() with
-lpthread.

We also have the following required changes here:
- rename alpha's _UC_UNIQUE into _UC_TLSBASE
- add _UC_TLSBASE definition in header file for all ports
(powerpc, sh3, sparc and sparc64 lack the implementation for now)
- introduce a libc stub that can be overriden for setcontext()
- modify MD libcs swapcontext() implementations so that they use the
setcontext() libc stub instead of doing a plain system call.

While we are there:
- document various MD _UC_* flags in header file
- add libc and libpthread tests for swapcontext() behavior
(hopefully helpful to spot MD problems introduced with this change)

Future work:
- Deciding whether kernel support or _UC_TLSBASE should be added for
powerpc, sh3, sparc and sparc64 is left to portmasters
sparc64

Approved by core@

branches: 1.19.2;
Mark _resumecontext as dead. ANSIfy all declarations for it.

Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Remove 3rd and 4th clauses in christos' license. OK christos.

branches: 1.16.2;
Import syslogd SoC project by Martin Schuette:
- new syslog protocol api syslogp(3) that supports structured data
and draft-rfc timestamps
- reliable tcp connections with queueing
- encrypted connections

move decls for _malloc_{pre,post}fork() to extern.h

branches: 1.14.8;
Don't expose _ss functions for 4.0. Requested by core.

PR/24324: Arne H Juul: Re-implement seekdir/telldir using a pointer of
locations per directory instead of a global hash table to avoid memory
leak issues, and incorrect results.

complete constification of the sysctl() user side

- s/notyet/WIDE_DOUBLE/
- Add a little more glue for WIDE_DOUBLE; not done yet.
- s/def FLOATING_POINT/ndef NO_FLOATING_POINT/ to reduce diffs with FreeBSD.
- fix memory leak where each double formatted leaked 24 by calling __freedtoa()
appropriately. the new gdtoa keeps a list of memory chunks allocated by
malloc(), and it must maintained properly by calling __freedtoa() on the
results of __dtoa() Hi Klaus!
- in vfwprintf() make cvt return char * and convert it using __mbsconv(),
instead of having it return wchar_t *.

This should fix the memory leaks people have been reporting (eg. in top etc.)

rename __func to _func_unlocked, and add their prototypes in extern.h
instead of exposing them in dirent.h. More locking consistency fixes.

Constify the _-sigaction_sigtramp tramp argument.

Merge the nathanw_sa branch.

Add prototype for __sigaction_sigtramp(). This system call is used
only by libc internally, and thus does not need to be exported in
any other header file.

branches: 1.6.12;
move __getcwd prototypes to libc-private header file.

XXX duplicate the prototype in getcwd regression test (which needs to
call the syscall directly for reasonably complete testing).

* On architectures using ELF, and conditionally on those in transition, rename
_ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and
_C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to
avoid possible name clashes with identifiers used in user applications.
* Do the same for minbrk on all architectures to avoid a GCC-specific (and
on ELF architectures effectively useless) symbol reference renaming in MI code.

in the __str{error,signal} functions make the third argument size_t since
it is really a size. This does not affect the external interface, so there
should be no reason to bump the libc #

const poisoning.

Remove _tztab() declaration now that timezone() migrated to libcompat.

Add prototype declarations

tidy up some extern declarations

PR/57250: Martin Husemann: dtoa mishandles infinite doubles on 32bit big
endian machines. When long double support was added, the old code was kept
for the regular double code. This code was never used because WIDE_DOUBLE
was always defined in the Makefile. Remove that old code, and conditionalize
the WIDE_DOUBLE code based on if long doubles are different than doubles on
the specific platform.

branches: 1.26.6;
Hook up proper fork lock handling for malloc:
- lock all relevant mutexes just before fork
- unlock all mutexes just after fork in the parent
- full reinit non-spinlocks in the child
This is not using the normal pthread_atfork interface to ensure order of
operation, malloc is used as implementation detail too often.

put back strerror_ss, it will be used shortly.

Add strerror_ss_r to be used by syslog_ss

branches: 1.23.8;
Add strerror_l.

move prototypes to stdio.h

take care of the signal safe syslog calls which are not exposed.

branches: 1.20.2;
setcontext() used to be incompatible with -lpthread since it affected
the TLS pointer, therefore wrecking the pthread environement.

Some ports had _UC_TLSBASE flag or equivalent (_UC_UNIQUE on alpha)
that controlled whether setcontext() would change the TLS pointer.
This change let libpthread override setcontext() with its own version
that unsets _UC_TLSBASE, enabling safe usage of setcontext() with
-lpthread.

We also have the following required changes here:
- rename alpha's _UC_UNIQUE into _UC_TLSBASE
- add _UC_TLSBASE definition in header file for all ports
(powerpc, sh3, sparc and sparc64 lack the implementation for now)
- introduce a libc stub that can be overriden for setcontext()
- modify MD libcs swapcontext() implementations so that they use the
setcontext() libc stub instead of doing a plain system call.

While we are there:
- document various MD _UC_* flags in header file
- add libc and libpthread tests for swapcontext() behavior
(hopefully helpful to spot MD problems introduced with this change)

Future work:
- Deciding whether kernel support or _UC_TLSBASE should be added for
powerpc, sh3, sparc and sparc64 is left to portmasters
sparc64

Approved by core@

branches: 1.19.2;
Mark _resumecontext as dead. ANSIfy all declarations for it.

Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Remove 3rd and 4th clauses in christos' license. OK christos.

branches: 1.16.2;
Import syslogd SoC project by Martin Schuette:
- new syslog protocol api syslogp(3) that supports structured data
and draft-rfc timestamps
- reliable tcp connections with queueing
- encrypted connections

move decls for _malloc_{pre,post}fork() to extern.h

branches: 1.14.8;
Don't expose _ss functions for 4.0. Requested by core.

PR/24324: Arne H Juul: Re-implement seekdir/telldir using a pointer of
locations per directory instead of a global hash table to avoid memory
leak issues, and incorrect results.

complete constification of the sysctl() user side

- s/notyet/WIDE_DOUBLE/
- Add a little more glue for WIDE_DOUBLE; not done yet.
- s/def FLOATING_POINT/ndef NO_FLOATING_POINT/ to reduce diffs with FreeBSD.
- fix memory leak where each double formatted leaked 24 by calling __freedtoa()
appropriately. the new gdtoa keeps a list of memory chunks allocated by
malloc(), and it must maintained properly by calling __freedtoa() on the
results of __dtoa() Hi Klaus!
- in vfwprintf() make cvt return char * and convert it using __mbsconv(),
instead of having it return wchar_t *.

This should fix the memory leaks people have been reporting (eg. in top etc.)

rename __func to _func_unlocked, and add their prototypes in extern.h
instead of exposing them in dirent.h. More locking consistency fixes.

Constify the _-sigaction_sigtramp tramp argument.

Merge the nathanw_sa branch.

Add prototype for __sigaction_sigtramp(). This system call is used
only by libc internally, and thus does not need to be exported in
any other header file.

branches: 1.6.12;
move __getcwd prototypes to libc-private header file.

XXX duplicate the prototype in getcwd regression test (which needs to
call the syscall directly for reasonably complete testing).

* On architectures using ELF, and conditionally on those in transition, rename
_ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and
_C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to
avoid possible name clashes with identifiers used in user applications.
* Do the same for minbrk on all architectures to avoid a GCC-specific (and
on ELF architectures effectively useless) symbol reference renaming in MI code.

in the __str{error,signal} functions make the third argument size_t since
it is really a size. This does not affect the external interface, so there
should be no reason to bump the libc #

const poisoning.

Remove _tztab() declaration now that timezone() migrated to libcompat.

Add prototype declarations

PR/57250: Martin Husemann: dtoa mishandles infinite doubles on 32bit big
endian machines. When long double support was added, the old code was kept
for the regular double code. This code was never used because WIDE_DOUBLE
was always defined in the Makefile. Remove that old code, and conditionalize
the WIDE_DOUBLE code based on if long doubles are different than doubles on
the specific platform.

branches: 1.26.6;
Hook up proper fork lock handling for malloc:
- lock all relevant mutexes just before fork
- unlock all mutexes just after fork in the parent
- full reinit non-spinlocks in the child
This is not using the normal pthread_atfork interface to ensure order of
operation, malloc is used as implementation detail too often.

put back strerror_ss, it will be used shortly.

Add strerror_ss_r to be used by syslog_ss

branches: 1.23.8;
Add strerror_l.

move prototypes to stdio.h

take care of the signal safe syslog calls which are not exposed.

branches: 1.20.2;
setcontext() used to be incompatible with -lpthread since it affected
the TLS pointer, therefore wrecking the pthread environement.

Some ports had _UC_TLSBASE flag or equivalent (_UC_UNIQUE on alpha)
that controlled whether setcontext() would change the TLS pointer.
This change let libpthread override setcontext() with its own version
that unsets _UC_TLSBASE, enabling safe usage of setcontext() with
-lpthread.

We also have the following required changes here:
- rename alpha's _UC_UNIQUE into _UC_TLSBASE
- add _UC_TLSBASE definition in header file for all ports
(powerpc, sh3, sparc and sparc64 lack the implementation for now)
- introduce a libc stub that can be overriden for setcontext()
- modify MD libcs swapcontext() implementations so that they use the
setcontext() libc stub instead of doing a plain system call.

While we are there:
- document various MD _UC_* flags in header file
- add libc and libpthread tests for swapcontext() behavior
(hopefully helpful to spot MD problems introduced with this change)

Future work:
- Deciding whether kernel support or _UC_TLSBASE should be added for
powerpc, sh3, sparc and sparc64 is left to portmasters
sparc64

Approved by core@

branches: 1.19.2;
Mark _resumecontext as dead. ANSIfy all declarations for it.

Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Remove 3rd and 4th clauses in christos' license. OK christos.

branches: 1.16.2;
Import syslogd SoC project by Martin Schuette:
- new syslog protocol api syslogp(3) that supports structured data
and draft-rfc timestamps
- reliable tcp connections with queueing
- encrypted connections

move decls for _malloc_{pre,post}fork() to extern.h

branches: 1.14.8;
Don't expose _ss functions for 4.0. Requested by core.

PR/24324: Arne H Juul: Re-implement seekdir/telldir using a pointer of
locations per directory instead of a global hash table to avoid memory
leak issues, and incorrect results.

complete constification of the sysctl() user side

- s/notyet/WIDE_DOUBLE/
- Add a little more glue for WIDE_DOUBLE; not done yet.
- s/def FLOATING_POINT/ndef NO_FLOATING_POINT/ to reduce diffs with FreeBSD.
- fix memory leak where each double formatted leaked 24 by calling __freedtoa()
appropriately. the new gdtoa keeps a list of memory chunks allocated by
malloc(), and it must maintained properly by calling __freedtoa() on the
results of __dtoa() Hi Klaus!
- in vfwprintf() make cvt return char * and convert it using __mbsconv(),
instead of having it return wchar_t *.

This should fix the memory leaks people have been reporting (eg. in top etc.)

rename __func to _func_unlocked, and add their prototypes in extern.h
instead of exposing them in dirent.h. More locking consistency fixes.

Constify the _-sigaction_sigtramp tramp argument.

Merge the nathanw_sa branch.

Add prototype for __sigaction_sigtramp(). This system call is used
only by libc internally, and thus does not need to be exported in
any other header file.

branches: 1.6.12;
move __getcwd prototypes to libc-private header file.

XXX duplicate the prototype in getcwd regression test (which needs to
call the syscall directly for reasonably complete testing).

* On architectures using ELF, and conditionally on those in transition, rename
_ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and
_C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to
avoid possible name clashes with identifiers used in user applications.
* Do the same for minbrk on all architectures to avoid a GCC-specific (and
on ELF architectures effectively useless) symbol reference renaming in MI code.

in the __str{error,signal} functions make the third argument size_t since
it is really a size. This does not affect the external interface, so there
should be no reason to bump the libc #

const poisoning.

Remove _tztab() declaration now that timezone() migrated to libcompat.

Add prototype declarations

Hook up proper fork lock handling for malloc:
- lock all relevant mutexes just before fork
- unlock all mutexes just after fork in the parent
- full reinit non-spinlocks in the child
This is not using the normal pthread_atfork interface to ensure order of
operation, malloc is used as implementation detail too often.

put back strerror_ss, it will be used shortly.

Add strerror_ss_r to be used by syslog_ss

branches: 1.23.8;
Add strerror_l.

move prototypes to stdio.h

take care of the signal safe syslog calls which are not exposed.

branches: 1.20.2;
setcontext() used to be incompatible with -lpthread since it affected
the TLS pointer, therefore wrecking the pthread environement.

Some ports had _UC_TLSBASE flag or equivalent (_UC_UNIQUE on alpha)
that controlled whether setcontext() would change the TLS pointer.
This change let libpthread override setcontext() with its own version
that unsets _UC_TLSBASE, enabling safe usage of setcontext() with
-lpthread.

We also have the following required changes here:
- rename alpha's _UC_UNIQUE into _UC_TLSBASE
- add _UC_TLSBASE definition in header file for all ports
(powerpc, sh3, sparc and sparc64 lack the implementation for now)
- introduce a libc stub that can be overriden for setcontext()
- modify MD libcs swapcontext() implementations so that they use the
setcontext() libc stub instead of doing a plain system call.

While we are there:
- document various MD _UC_* flags in header file
- add libc and libpthread tests for swapcontext() behavior
(hopefully helpful to spot MD problems introduced with this change)

Future work:
- Deciding whether kernel support or _UC_TLSBASE should be added for
powerpc, sh3, sparc and sparc64 is left to portmasters
sparc64

Approved by core@

branches: 1.19.2;
Mark _resumecontext as dead. ANSIfy all declarations for it.

Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Remove 3rd and 4th clauses in christos' license. OK christos.

branches: 1.16.2;
Import syslogd SoC project by Martin Schuette:
- new syslog protocol api syslogp(3) that supports structured data
and draft-rfc timestamps
- reliable tcp connections with queueing
- encrypted connections

move decls for _malloc_{pre,post}fork() to extern.h

branches: 1.14.8;
Don't expose _ss functions for 4.0. Requested by core.

PR/24324: Arne H Juul: Re-implement seekdir/telldir using a pointer of
locations per directory instead of a global hash table to avoid memory
leak issues, and incorrect results.

complete constification of the sysctl() user side

- s/notyet/WIDE_DOUBLE/
- Add a little more glue for WIDE_DOUBLE; not done yet.
- s/def FLOATING_POINT/ndef NO_FLOATING_POINT/ to reduce diffs with FreeBSD.
- fix memory leak where each double formatted leaked 24 by calling __freedtoa()
appropriately. the new gdtoa keeps a list of memory chunks allocated by
malloc(), and it must maintained properly by calling __freedtoa() on the
results of __dtoa() Hi Klaus!
- in vfwprintf() make cvt return char * and convert it using __mbsconv(),
instead of having it return wchar_t *.

This should fix the memory leaks people have been reporting (eg. in top etc.)

rename __func to _func_unlocked, and add their prototypes in extern.h
instead of exposing them in dirent.h. More locking consistency fixes.

Constify the _-sigaction_sigtramp tramp argument.

Merge the nathanw_sa branch.

Add prototype for __sigaction_sigtramp(). This system call is used
only by libc internally, and thus does not need to be exported in
any other header file.

branches: 1.6.12;
move __getcwd prototypes to libc-private header file.

XXX duplicate the prototype in getcwd regression test (which needs to
call the syscall directly for reasonably complete testing).

* On architectures using ELF, and conditionally on those in transition, rename
_ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and
_C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to
avoid possible name clashes with identifiers used in user applications.
* Do the same for minbrk on all architectures to avoid a GCC-specific (and
on ELF architectures effectively useless) symbol reference renaming in MI code.

in the __str{error,signal} functions make the third argument size_t since
it is really a size. This does not affect the external interface, so there
should be no reason to bump the libc #

const poisoning.

Remove _tztab() declaration now that timezone() migrated to libcompat.

Add prototype declarations

put back strerror_ss, it will be used shortly.

Add strerror_ss_r to be used by syslog_ss

Add strerror_l.

move prototypes to stdio.h

take care of the signal safe syslog calls which are not exposed.

branches: 1.20.2;
setcontext() used to be incompatible with -lpthread since it affected
the TLS pointer, therefore wrecking the pthread environement.

Some ports had _UC_TLSBASE flag or equivalent (_UC_UNIQUE on alpha)
that controlled whether setcontext() would change the TLS pointer.
This change let libpthread override setcontext() with its own version
that unsets _UC_TLSBASE, enabling safe usage of setcontext() with
-lpthread.

We also have the following required changes here:
- rename alpha's _UC_UNIQUE into _UC_TLSBASE
- add _UC_TLSBASE definition in header file for all ports
(powerpc, sh3, sparc and sparc64 lack the implementation for now)
- introduce a libc stub that can be overriden for setcontext()
- modify MD libcs swapcontext() implementations so that they use the
setcontext() libc stub instead of doing a plain system call.

While we are there:
- document various MD _UC_* flags in header file
- add libc and libpthread tests for swapcontext() behavior
(hopefully helpful to spot MD problems introduced with this change)

Future work:
- Deciding whether kernel support or _UC_TLSBASE should be added for
powerpc, sh3, sparc and sparc64 is left to portmasters
sparc64

Approved by core@

branches: 1.19.2;
Mark _resumecontext as dead. ANSIfy all declarations for it.

Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Remove 3rd and 4th clauses in christos' license. OK christos.

branches: 1.16.2;
Import syslogd SoC project by Martin Schuette:
- new syslog protocol api syslogp(3) that supports structured data
and draft-rfc timestamps
- reliable tcp connections with queueing
- encrypted connections

move decls for _malloc_{pre,post}fork() to extern.h

branches: 1.14.8;
Don't expose _ss functions for 4.0. Requested by core.

PR/24324: Arne H Juul: Re-implement seekdir/telldir using a pointer of
locations per directory instead of a global hash table to avoid memory
leak issues, and incorrect results.

complete constification of the sysctl() user side

- s/notyet/WIDE_DOUBLE/
- Add a little more glue for WIDE_DOUBLE; not done yet.
- s/def FLOATING_POINT/ndef NO_FLOATING_POINT/ to reduce diffs with FreeBSD.
- fix memory leak where each double formatted leaked 24 by calling __freedtoa()
appropriately. the new gdtoa keeps a list of memory chunks allocated by
malloc(), and it must maintained properly by calling __freedtoa() on the
results of __dtoa() Hi Klaus!
- in vfwprintf() make cvt return char * and convert it using __mbsconv(),
instead of having it return wchar_t *.

This should fix the memory leaks people have been reporting (eg. in top etc.)

rename __func to _func_unlocked, and add their prototypes in extern.h
instead of exposing them in dirent.h. More locking consistency fixes.

Constify the _-sigaction_sigtramp tramp argument.

Merge the nathanw_sa branch.

Add prototype for __sigaction_sigtramp(). This system call is used
only by libc internally, and thus does not need to be exported in
any other header file.

branches: 1.6.12;
move __getcwd prototypes to libc-private header file.

XXX duplicate the prototype in getcwd regression test (which needs to
call the syscall directly for reasonably complete testing).

* On architectures using ELF, and conditionally on those in transition, rename
_ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and
_C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to
avoid possible name clashes with identifiers used in user applications.
* Do the same for minbrk on all architectures to avoid a GCC-specific (and
on ELF architectures effectively useless) symbol reference renaming in MI code.

in the __str{error,signal} functions make the third argument size_t since
it is really a size. This does not affect the external interface, so there
should be no reason to bump the libc #

const poisoning.

Remove _tztab() declaration now that timezone() migrated to libcompat.

Add prototype declarations