SDENTER(3)

��
��
(095) 932-9212, 932-9213, 939-0783
E-mail: [email protected]

�� (!) ��

CIT Forum CD-ROM

SDENTER(3)
XENIX System V (21 �� 1987)

��
sdenter, sdleave - c��xpo��pye� �oc�y� � pa��e��e�� ce��e��a� �a��x

��

	#include <sys/sd.h>
	
	int sdenter (addr, flags)
	char *addr;
	int flags;
	
	int sdleave (addr)
	char *addr;

��
Sdenter �c�o��ye�c� �p� �o��e �e�y�e�o �po�ecca �o�y�� oc�y� � co�ep��o�y pa��e��e�o�o ce��e��a �a��x. Ap�y�e�� addr pa�e� ��a�e��, �o��pa�e��o�y �pe��y�� o�o� sdget(3). B��o��e�oe �e�c��e o�pe�e��e�c� ap�y�e��o� flags, �o�op�� c�po��c� �o��ec�o� c�o�e��e� c�e�y��x ��a�o�:

SD_NOWAIT: Ec�� py�o� �po�ecc y�e c�e�a� ��o� sdenter �o o��o�e�� o�y ce��e��y �a��x, �o �e c�e�a� coo��e�c��y�� sdleave c ��a�o� SD_UNLOCK, �po�ecc �e ��e� oc�o�o��e�� ce��e��a � ��c�pye�c� o��a ENAVAIL.
SD_WRITE: ��a��ae�, ��o �po�ecc co��pae�c� �e�a�� a��c� � pa��e��e�� ce��e�� a��x. �po�ecc, �p�coe�� pa��e��e�� ce��e�� a��x c yc�a�o��e�� a�o� SD_RDONLY, �e �o�e� ��o�� sdenter c ��a�o� SD_WRITE.

Sdleave �c�o��ye�c� �� y�a�a�� o�o, ��o �e�y�� po�ecc �a�o�� o��a�� co�ep��o�o pa��e��e�o�o ce��e��a �a��x.

Mo��a�� pa��e��e�o�o ce��e��a �a��x, c�e�a��e �e��y ��o�a�� sdenter � sdleave, ��o��c� �oppe��o � �o�y� �� y��e�� py�� po�ecca��. He pe�o�e��ye�c� �a�o��o oc�a�� ce��e�� o� �e�c��e� ��o�a sdenter: �a� �o��o �a�ep�e�a �e�y�a� pa�o�a c ce��e��o�, ��a�� sdleave. B �ac��oc��, �e pe�o�e��ye�c� �e��y sdenter � sdleave ��o�� c�c�e��e ��o��.

Ec�� ce��e�� co��a� �e� ��a�a SD_UNLOCK, �e��y sdenter � sdleave �a�pe�e� c�c�e�� o� fork.

Bo��pa�ae�oe ��a�e��e
B c�y�ae yc�e��o�o �a�ep�e�� o��pa�ae�c� ��a�e��e 0. ��a�e �o��pa�ae�c� ��a�e��e -1 � � errno �a�oc��c� �o� o��. O��a EINVAL o��a�ae�, ��o �po�ecc ��a� sdenter c ��a�o� SD_WRITE, a ce��e�� y�e �p�coe��e� �py�� po�ecco� c ��a�o� SD_RDONLY. O��a ENAVAIL o��a�ae�, ��o � sdenter y�a�a� ��a� SD_NOWAIT, a pa��e��e�� ce��e�� e c�o�o�e�.

��. ��
sdget(3), sdgetv(3)

�A�E�A��
�� cpe�c��a c�e�� XENIX � �o�y� o�cy�c��o�a�� py��x pea��a��x UNIX. �po�pa��, �c�o��y��e �� y��, �o�� o��o�o�a��c� c ��a�o� -lx.

Comments: [email protected]
Designed by Andrey Novikov
Copyright © CIT

SDENTER(3) XENIX System V (21 ���� 1987)

SDENTER(3)
XENIX System V (21 �� 1987)