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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-02 18:00:15 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-02 18:00:15 +0000 |
commit | 799c767d319d65c94b3770e82490c8dd4dc80378 (patch) | |
tree | bf9909c7f3ae617a34e401a0f88dc314f982f772 /c/src/exec/posix/src/semunlink.c | |
parent | Split some more stuff out of psignal.c. (diff) | |
download | rtems-799c767d319d65c94b3770e82490c8dd4dc80378.tar.bz2 |
Split the POSIX semaphore manager into multiple files.
Diffstat (limited to 'c/src/exec/posix/src/semunlink.c')
-rw-r--r-- | c/src/exec/posix/src/semunlink.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/c/src/exec/posix/src/semunlink.c b/c/src/exec/posix/src/semunlink.c new file mode 100644 index 0000000000..7fc2c56a28 --- /dev/null +++ b/c/src/exec/posix/src/semunlink.c @@ -0,0 +1,65 @@ +/* + * $Id$ + */ + +#include <stdarg.h> + +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <semaphore.h> +#include <limits.h> + +#include <rtems/system.h> +#include <rtems/score/object.h> +#include <rtems/posix/semaphore.h> +#include <rtems/posix/time.h> +#include <rtems/posix/seterr.h> + +/*PAGE + * + * 11.2.5 Remove a Named Semaphore, P1003.1b-1993, p.225 + */ + +int sem_unlink( + const char *name +) +{ + int status; + register POSIX_Semaphore_Control *the_semaphore; + Objects_Id the_semaphore_id; + Objects_Locations location; + + status = _POSIX_Semaphore_Name_to_id( name, &the_semaphore_id ); + + if ( !status ) + set_errno_and_return_minus_one( status ); + + the_semaphore = _POSIX_Semaphore_Get( &the_semaphore_id, &location ); + switch ( location ) { + case OBJECTS_ERROR: + set_errno_and_return_minus_one( EINVAL ); + case OBJECTS_REMOTE: + _Thread_Dispatch(); + return POSIX_MP_NOT_IMPLEMENTED(); + set_errno_and_return_minus_one( EINVAL ); + case OBJECTS_LOCAL: + +#if defined(RTEMS_MULTIPROCESSING) + if ( the_semaphore->process_shared == PTHREAD_PROCESS_SHARED ) { + _Objects_MP_Close( + &_POSIX_Semaphore_Information, + the_semaphore->Object.id + ); + } +#endif + + the_semaphore->linked = FALSE; + + _POSIX_Semaphore_Delete( the_semaphore ); + + _Thread_Enable_dispatch(); + return 0; + } + return POSIX_BOTTOM_REACHED(); +} |