USCLOSEPOLLSEMA(3P)					   USCLOSEPOLLSEMA(3P)

NAME    [Toc]    [Back]

     usclosepollsema - detach a	file descriptor	from a pollable	semaphore

C SYNOPSIS    [Toc]    [Back]

     #include <ulocks.h>

     int usclosepollsema (usema_t *sema);

DESCRIPTION    [Toc]    [Back]

     usclosepollsema detaches the file descriptor associated with sema.	 In
     addition to closing the caller's file descriptor, it invalidates and
     closes any	file descriptors used by other processes using the same
     semaphore and in the same share group as the caller (assuming of course
     that the share group is sharing file descriptors).

     usclosepollsema will fail if one or more of the following are true:

     [EBADF]	      The file descriptor for the semaphore has	somehow	been
		      already invalidated.  This implies a corruption of the
		      semaphore	data structure.

     [EINVAL]	      The caller isn't a registered member of the arena	that
		      sema was allocated from.

SEE ALSO    [Toc]    [Back]

     chmod(2), open(2),	sproc(2), amalloc(3P), usopenpollsema(3P),
     usconfig(3P), uscpsema(3P), usctlsema(3P),	usdumpsema(3P),
     usfreesema(3P), usfreepollsema(3P), usinit(3P), usnewsema(3P),
     usnewpollsema(3P),	uspsema(3P), usvsema(3P), usema(7M).

DIAGNOSTICS    [Toc]    [Back]

     Upon successful completion, 0 is returned.	Otherwise, a value of -1 is
     returned and errno	is set to indicate the error.


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