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hurd: take __USE_EXTERN_INLINES into account and restrict inlines

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* hurd/hurd.h (__hurd_fail): Always declare function, and provide inline
version only if __USE_EXTERN_INLINES is defined.
* hurd/hurd/fd.h (_hurd_fd_error_signal, _hurd_fd_error, __hurd_dfail,
__hurd_sockfail): Likewise.
(_hurd_fd_get): Always declare functions, and provide inline versions
only if __USE_EXTERN_INLINES and _LIBC are defined and IS_IN(libc).
* hurd/hurd/port.h (_hurd_port_init, _hurd_port_locked_get,
_hurd_port_get, _hurd_port_free, _hurd_port_locked_set,
_hurd_port_set): Always declare functions, and provide inline versions
only if __USE_EXTERN_INLINES and _LIBC are defined and
IS_IN(libc).
* hurd/hurd/signal.h (_hurd_self_sigstate, _hurd_critical_section_lock,
_hurd_critical_section_unlock): Likewise.
* hurd/hurd/threadvar.h (__hurd_threadvar_location_from_sp,
* __hurd_threadvar_location): Likewise.
* hurd/hurd/userlink.h (_hurd_userlink_link, _hurd_userlink_unlink,
_hurd_userlink_clear): Likewise.
* mach/lock-intern.h (__spin_lock_init, __spin_lock, __mutex_lock,
__mutex_unlock, __mutex_trylock): Always declare functions, and provide
inline versions only if __USE_EXTERN_INLINES and _LIBC are defined.
* mach/mach/mig_support.h (__mig_strncpy): Likewise.
* sysdeps/generic/machine-lock.h (__spin_unlock, __spin_try_lock,
__spin_lock_locked): Likewise.
* sysdeps/mach/i386/machine-lock.h (__spin_unlock, __spin_try_lock,
__spin_lock_locked): Likewise.
* mach/spin-lock.c (__USE_EXTERN_INLINES): Define to 1.
* hurd/Versions (libc: GLIBC_2.27): Add _hurd_fd_error_signal,
_hurd_fd_error, __hurd_dfail, __hurd_sockfail, _hurd_port_locked_set,
__hurd_threadvar_location_from_sp, __hurd_threadvar_location,
_hurd_userlink_link, _hurd_userlink_unlink, _hurd_userlink_clear.
This commit is contained in:
Samuel Thibault 2018-01-28 18:43:10 +01:00
parent 3fc1ecf935
commit 28f6186f3e
13 changed files with 204 additions and 0 deletions
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30
ChangeLog
View File

@ -60,6 +60,36 @@
_POSIX_CHOWN_RESTRICTED is defined to 0.
* io/tst-copy_file_range.c [!defined CLONE_NEWNS]: Do not include
<sys/mount.h>.
* hurd/hurd.h (__hurd_fail): Always declare function, and provide inline
version only if __USE_EXTERN_INLINES is defined.
* hurd/hurd/fd.h (_hurd_fd_error_signal, _hurd_fd_error, __hurd_dfail,
__hurd_sockfail): Likewise.
(_hurd_fd_get): Always declare functions, and provide inline versions
only if __USE_EXTERN_INLINES and _LIBC are defined and IS_IN(libc).
* hurd/hurd/port.h (_hurd_port_init, _hurd_port_locked_get,
_hurd_port_get, _hurd_port_free, _hurd_port_locked_set,
_hurd_port_set): Always declare functions, and provide inline versions
only if __USE_EXTERN_INLINES and _LIBC are defined and
IS_IN(libc).
* hurd/hurd/signal.h (_hurd_self_sigstate, _hurd_critical_section_lock,
_hurd_critical_section_unlock): Likewise.
* hurd/hurd/threadvar.h (__hurd_threadvar_location_from_sp,
* __hurd_threadvar_location): Likewise.
* hurd/hurd/userlink.h (_hurd_userlink_link, _hurd_userlink_unlink,
_hurd_userlink_clear): Likewise.
* mach/lock-intern.h (__spin_lock_init, __spin_lock, __mutex_lock,
__mutex_unlock, __mutex_trylock): Always declare functions, and provide
inline versions only if __USE_EXTERN_INLINES and _LIBC are defined.
* mach/mach/mig_support.h (__mig_strncpy): Likewise.
* sysdeps/generic/machine-lock.h (__spin_unlock, __spin_try_lock,
__spin_lock_locked): Likewise.
* sysdeps/mach/i386/machine-lock.h (__spin_unlock, __spin_try_lock,
__spin_lock_locked): Likewise.
* mach/spin-lock.c (__USE_EXTERN_INLINES): Define to 1.
* hurd/Versions (libc: GLIBC_2.27): Add _hurd_fd_error_signal,
_hurd_fd_error, __hurd_dfail, __hurd_sockfail, _hurd_port_locked_set,
__hurd_threadvar_location_from_sp, __hurd_threadvar_location,
_hurd_userlink_link, _hurd_userlink_unlink, _hurd_userlink_clear.
2008-12-18 Thomas Schwinge <tschwinge@gnu.org>

8
hurd/Versions
View File

@ -130,6 +130,14 @@ libc {
__errno_location;
}
GLIBC_2.27 {
# These always existed as inlines but the real functions were not exported.
_hurd_fd_error_signal; _hurd_fd_error;
__hurd_dfail; __hurd_sockfail;
_hurd_port_locked_set;
__hurd_threadvar_location_from_sp;
__hurd_threadvar_location;
_hurd_userlink_link; _hurd_userlink_unlink; _hurd_userlink_clear;
# "quasi-internal" functions
_hurd_exec_paths;
}

4
hurd/hurd.h
View File

@ -46,6 +46,9 @@
#define _HURD_H_EXTERN_INLINE __extern_inline
#endif
extern int __hurd_fail (error_t err);
#ifdef __USE_EXTERN_INLINES
_HURD_H_EXTERN_INLINE int
__hurd_fail (error_t err)
{
@ -75,6 +78,7 @@ __hurd_fail (error_t err)
errno = err;
return -1;
}
#endif
/* Basic ports and info, initialized by startup. */

26
hurd/hurd/fd.h
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@ -59,6 +59,10 @@ extern struct mutex _hurd_dtable_lock; /* Locks those two variables. */
NULL. The cell is unlocked; when ready to use it, lock it and check for
it being unused. */
extern struct hurd_fd *_hurd_fd_get (int fd);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_FD_H_EXTERN_INLINE struct hurd_fd *
_hurd_fd_get (int fd)
{
@ -91,6 +95,8 @@ _hurd_fd_get (int fd)
return descriptor;
}
# endif
#endif
/* Evaluate EXPR with the variable `descriptor' bound to a pointer to the
@ -138,6 +144,9 @@ _hurd_fd_get (int fd)
/* Check if ERR should generate a signal.
Returns the signal to take, or zero if none. */
extern int _hurd_fd_error_signal (error_t err);
#ifdef __USE_EXTERN_INLINES
_HURD_FD_H_EXTERN_INLINE int
_hurd_fd_error_signal (error_t err)
{
@ -154,11 +163,15 @@ _hurd_fd_error_signal (error_t err)
return 0;
}
}
#endif
/* Handle an error from an RPC on a file descriptor's port. You should
always use this function to handle errors from RPCs made on file
descriptor ports. Some errors are translated into signals. */
extern error_t _hurd_fd_error (int fd, error_t err);
#ifdef __USE_EXTERN_INLINES
_HURD_FD_H_EXTERN_INLINE error_t
_hurd_fd_error (int fd, error_t err)
{
@ -171,20 +184,28 @@ _hurd_fd_error (int fd, error_t err)
}
return err;
}
#endif
/* Handle error code ERR from an RPC on file descriptor FD's port.
Set `errno' to the appropriate error code, and always return -1. */
extern int __hurd_dfail (int fd, error_t err);
#ifdef __USE_EXTERN_INLINES
_HURD_FD_H_EXTERN_INLINE int
__hurd_dfail (int fd, error_t err)
{
errno = _hurd_fd_error (fd, err);
return -1;
}
#endif
/* Likewise, but do not raise SIGPIPE on EPIPE if flags contain
MSG_NOSIGNAL. */
exern int __hurd_sockfail (int fd, int flags, error_t err);
#ifdef __USE_EXTERN_INLINES
_HURD_FD_H_EXTERN_INLINE int
__hurd_sockfail (int fd, int flags, error_t err)
{
@ -193,6 +214,7 @@ __hurd_sockfail (int fd, int flags, error_t err)
errno = err;
return -1;
}
#endif
/* Set up *FD to have PORT its server port, doing appropriate ctty magic.
Does no locking or unlocking. */
@ -258,6 +280,8 @@ extern int _hurd_select (int nfds, struct pollfd *pollfds,
/* Apply AT_FLAGS on FLAGS, in preparation for calling
__hurd_file_name_lookup. */
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_FD_H_EXTERN_INLINE error_t
__hurd_at_flags (int *at_flags, int *flags)
{
@ -274,6 +298,8 @@ __hurd_at_flags (int *at_flags, int *flags)
return 0;
}
# endif
#endif
/* Variant of file_name_lookup used in *at function implementations.
AT_FLAGS may only contain AT_SYMLINK_FOLLOW or AT_SYMLINK_NOFOLLOW,

43
hurd/hurd/port.h
View File

@ -60,6 +60,10 @@ struct hurd_port
/* Initialize *PORT to INIT. */
extern void _hurd_port_init (struct hurd_port *port, mach_port_t init);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_PORT_H_EXTERN_INLINE void
_hurd_port_init (struct hurd_port *port, mach_port_t init)
{
@ -67,6 +71,8 @@ _hurd_port_init (struct hurd_port *port, mach_port_t init)
port->users = NULL;
port->port = init;
}
# endif
#endif
/* Cleanup function for non-local exits. */
@ -75,6 +81,12 @@ extern void _hurd_port_cleanup (void *, jmp_buf, int);
/* Get a reference to *PORT, which is locked.
Pass return value and LINK to _hurd_port_free when done. */
extern mach_port_t
_hurd_port_locked_get (struct hurd_port *port,
struct hurd_userlink *link);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_PORT_H_EXTERN_INLINE mach_port_t
_hurd_port_locked_get (struct hurd_port *port,
struct hurd_userlink *link)
@ -90,9 +102,17 @@ _hurd_port_locked_get (struct hurd_port *port,
__spin_unlock (&port->lock);
return result;
}
# endif
#endif
/* Same, but locks PORT first. */
extern mach_port_t
_hurd_port_get (struct hurd_port *port,
struct hurd_userlink *link);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_PORT_H_EXTERN_INLINE mach_port_t
_hurd_port_get (struct hurd_port *port,
struct hurd_userlink *link)
@ -104,10 +124,19 @@ _hurd_port_get (struct hurd_port *port,
HURD_CRITICAL_END;
return result;
}
# endif
#endif
/* Free a reference gotten with `USED_PORT = _hurd_port_get (PORT, LINK);' */
extern void
_hurd_port_free (struct hurd_port *port,
struct hurd_userlink *link,
mach_port_t used_port);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_PORT_H_EXTERN_INLINE void
_hurd_port_free (struct hurd_port *port,
struct hurd_userlink *link,
@ -127,11 +156,17 @@ _hurd_port_free (struct hurd_port *port,
if (dealloc)
__mach_port_deallocate (__mach_task_self (), used_port);
}
# endif
#endif
/* Set *PORT's port to NEWPORT. NEWPORT's reference is consumed by PORT->port.
PORT->lock is locked. */
extern void _hurd_port_locked_set (struct hurd_port *port, mach_port_t newport);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_PORT_H_EXTERN_INLINE void
_hurd_port_locked_set (struct hurd_port *port, mach_port_t newport)
{
@ -142,9 +177,15 @@ _hurd_port_locked_set (struct hurd_port *port, mach_port_t newport)
if (old != MACH_PORT_NULL)
__mach_port_deallocate (__mach_task_self (), old);
}
# endif
#endif
/* Same, but locks PORT first. */
extern void _hurd_port_set (struct hurd_port *port, mach_port_t newport);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_PORT_H_EXTERN_INLINE void
_hurd_port_set (struct hurd_port *port, mach_port_t newport)
{
@ -153,6 +194,8 @@ _hurd_port_set (struct hurd_port *port, mach_port_t newport)
_hurd_port_locked_set (port, newport);
HURD_CRITICAL_END;
}
# endif
#endif
#endif /* hurd/port.h */

16
hurd/hurd/signal.h
View File

@ -129,6 +129,8 @@ extern struct hurd_sigstate *_hurd_self_sigstate (void)
#define _HURD_SIGNAL_H_EXTERN_INLINE __extern_inline
#endif
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_SIGNAL_H_EXTERN_INLINE struct hurd_sigstate *
_hurd_self_sigstate (void)
{
@ -138,6 +140,8 @@ _hurd_self_sigstate (void)
*location = _hurd_thread_sigstate (__mach_thread_self ());
return *location;
}
# endif
#endif
/* Thread listening on our message port; also called the "signal thread". */
@ -164,6 +168,10 @@ extern int _hurd_core_limit;
interrupted lest the signal handler try to take the same lock and
deadlock result. */
extern void *_hurd_critical_section_lock (void);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_SIGNAL_H_EXTERN_INLINE void *
_hurd_critical_section_lock (void)
{
@ -188,7 +196,13 @@ _hurd_critical_section_lock (void)
_hurd_critical_section_unlock to unlock it. */
return ss;
}
# endif
#endif
extern void _hurd_critical_section_unlock (void *our_lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_SIGNAL_H_EXTERN_INLINE void
_hurd_critical_section_unlock (void *our_lock)
{
@ -211,6 +225,8 @@ _hurd_critical_section_unlock (void *our_lock)
__msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
}
}
# endif
#endif
/* Convenient macros for simple uses of critical sections.
These two must be used as a pair at the same C scoping level. */

9
hurd/hurd/threadvar.h
View File

@ -81,6 +81,9 @@ enum __hurd_threadvar_index
extern unsigned long int *__hurd_threadvar_location_from_sp
(enum __hurd_threadvar_index __index, void *__sp);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_THREADVAR_H_EXTERN_INLINE unsigned long int *
__hurd_threadvar_location_from_sp (enum __hurd_threadvar_index __index,
void *__sp)
@ -92,6 +95,8 @@ __hurd_threadvar_location_from_sp (enum __hurd_threadvar_index __index,
: (unsigned long int *) ((__stack & __hurd_threadvar_stack_mask) +
__hurd_threadvar_stack_offset))[__index];
}
# endif
#endif
#include <machine-sp.h> /* Define __thread_stack_pointer. */
@ -105,12 +110,16 @@ __hurd_threadvar_location (enum __hurd_threadvar_index __index) __THROW
the same stack frame by different threads. */
__attribute__ ((__const__));
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_THREADVAR_H_EXTERN_INLINE unsigned long int *
__hurd_threadvar_location (enum __hurd_threadvar_index __index)
{
return __hurd_threadvar_location_from_sp (__index,
__thread_stack_pointer ());
}
# endif
#endif
#endif /* hurd/threadvar.h */

20
hurd/hurd/userlink.h
View File

@ -76,6 +76,12 @@ struct hurd_userlink
/* Attach LINK to the chain of users at *CHAINP. */
extern void
_hurd_userlink_link (struct hurd_userlink **chainp,
struct hurd_userlink *link);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_USERLINK_H_EXTERN_INLINE void
_hurd_userlink_link (struct hurd_userlink **chainp,
struct hurd_userlink *link)
@ -96,11 +102,17 @@ _hurd_userlink_link (struct hurd_userlink **chainp,
link->thread.prevp = thread_chainp;
*thread_chainp = link;
}
# endif
#endif
/* Detach LINK from its chain. Returns nonzero iff this was the
last user of the resource and it should be deallocated. */
extern int _hurd_userlink_unlink (struct hurd_userlink *link);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_USERLINK_H_EXTERN_INLINE int
_hurd_userlink_unlink (struct hurd_userlink *link)
{
@ -123,6 +135,8 @@ _hurd_userlink_unlink (struct hurd_userlink *link)
return dealloc;
}
# endif
#endif
/* Clear all users from *CHAINP. Call this when the resource *CHAINP
@ -131,6 +145,10 @@ _hurd_userlink_unlink (struct hurd_userlink *link)
value is zero, someone is still using the resource and they will
deallocate it when they are finished. */
extern int _hurd_userlink_clear (struct hurd_userlink **chainp);
#if defined __USE_EXTERN_INLINES && defined _LIBC
# if IS_IN (libc)
_HURD_USERLINK_H_EXTERN_INLINE int
_hurd_userlink_clear (struct hurd_userlink **chainp)
{
@ -143,5 +161,7 @@ _hurd_userlink_clear (struct hurd_userlink **chainp)
*chainp = NULL;
return 0;
}
# endif
#endif
#endif /* hurd/userlink.h */

20
mach/lock-intern.h
View File

@ -28,11 +28,15 @@
/* Initialize LOCK. */
extern void __spin_lock_init (__spin_lock_t *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE void
__spin_lock_init (__spin_lock_t *__lock)
{
*__lock = __SPIN_LOCK_INITIALIZER;
}
#endif
/* Lock LOCK, blocking if we can't get it. */
@ -40,12 +44,16 @@ extern void __spin_lock_solid (__spin_lock_t *__lock);
/* Lock the spin lock LOCK. */
extern void __spin_lock (__spin_lock_t *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE void
__spin_lock (__spin_lock_t *__lock)
{
if (! __spin_try_lock (__lock))
__spin_lock_solid (__lock);
}
#endif
/* Name space-clean internal interface to mutex locks.
@ -70,27 +78,39 @@ extern void __mutex_unlock_solid (void *__lock);
/* Lock the mutex lock LOCK. */
extern void __mutex_lock (void *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE void
__mutex_lock (void *__lock)
{
if (! __spin_try_lock ((__spin_lock_t *) __lock))
__mutex_lock_solid (__lock);
}
#endif
/* Unlock the mutex lock LOCK. */
extern void __mutex_unlock (void *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE void
__mutex_unlock (void *__lock)
{
__spin_unlock ((__spin_lock_t *) __lock);
__mutex_unlock_solid (__lock);
}
#endif
extern int __mutex_trylock (void *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE int
__mutex_trylock (void *__lock)
{
return __spin_try_lock ((__spin_lock_t *) __lock);
}
#endif
#endif /* lock-intern.h */

3
mach/mach/mig_support.h
View File

@ -66,6 +66,8 @@ extern void mig_reply_setup (const mach_msg_header_t *__request,
/* Idiocy support function. */
extern vm_size_t mig_strncpy (char *__dst, const char *__src, vm_size_t __len);
extern vm_size_t __mig_strncpy (char *__dst, const char *__src, vm_size_t);
#if defined __USE_EXTERN_INLINES && defined _LIBC
__extern_inline vm_size_t
__mig_strncpy (char *__dst, const char *__src, vm_size_t __len)
{
@ -76,6 +78,7 @@ mig_strncpy (char *__dst, const char *__src, vm_size_t __len)
{
return __mig_strncpy (__dst, __src, __len);
}
#endif

1
mach/spin-lock.c
View File

@ -1,3 +1,4 @@
#define __USE_EXTERN_INLINES 1
#define _EXTERN_INLINE /* Empty to define the real functions. */
#include "spin-lock.h"

12
sysdeps/generic/machine-lock.h
View File

@ -34,14 +34,21 @@ typedef volatile int __spin_lock_t;
/* Unlock LOCK. */
extern void __spin_unlock (__spin_lock_t *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE void
__spin_unlock (__spin_lock_t *__lock)
{
*__lock = 0;
}
#endif
/* Try to lock LOCK; return nonzero if we locked it, zero if another has. */
extern int __spin_try_lock (__spin_lock_t *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE int
__spin_try_lock (__spin_lock_t *__lock)
{
@ -50,14 +57,19 @@ __spin_try_lock (__spin_lock_t *__lock)
*__lock = 1;
return 1;
}
#endif
/* Return nonzero if LOCK is locked. */
extern int __spin_lock_locked (__spin_lock_t *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE int
__spin_lock_locked (__spin_lock_t *__lock)
{
return *__lock != 0;
}
#endif
#endif /* machine-lock.h */

12
sysdeps/mach/i386/machine-lock.h
View File

@ -34,6 +34,9 @@ typedef volatile int __spin_lock_t;
/* Unlock LOCK. */
extern void __spin_unlock (__spin_lock_t *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE void
__spin_unlock (__spin_lock_t *__lock)
{
@ -42,9 +45,13 @@ __spin_unlock (__spin_lock_t *__lock)
: "=&r" (__unlocked), "=m" (*__lock) : "0" (0)
: "memory");
}
#endif
/* Try to lock LOCK; return nonzero if we locked it, zero if another has. */
extern int __spin_try_lock (__spin_lock_t *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE int
__spin_try_lock (__spin_lock_t *__lock)
{
@ -54,14 +61,19 @@ __spin_try_lock (__spin_lock_t *__lock)
: "memory");
return !__locked;
}
#endif
/* Return nonzero if LOCK is locked. */
extern int __spin_lock_locked (__spin_lock_t *__lock);
#if defined __USE_EXTERN_INLINES && defined _LIBC
_EXTERN_INLINE int
__spin_lock_locked (__spin_lock_t *__lock)
{
return *__lock != 0;
}
#endif
#endif /* machine-lock.h */