libexplain/buffer/errno/select.h File Reference

#include <libexplain/ac/sys/select.h>
#include <libexplain/string_buffer.h>

Go to the source code of this file.

Functions
void	explain_buffer_errno_select (explain_string_buffer_t *sb, int errnum, int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)

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Function Documentation

void explain_buffer_errno_select	(	explain_string_buffer_t *	sb,
		int	errnum,
		int	nfds,
		fd_set *	readfds,
		fd_set *	writefds,
		fd_set *	exceptfds,
		struct timeval *	timeout
	)

The explain_buffer_errno_select function is used to obtain an explanation of an error returned by the select(2) system call. The least the message will contain is the value of strerror(errnum), but usually it will do much better, and indicate the underlying cause in more detail.

Parameters:

sb	The string buffer to print the message into. If a safe buffer is specified, this function is thread safe.
errnum	The error value to be decoded, usually obtained from the errno global variable just before this function is called. This is necessary if you need to call any code between the system call to be explained and this function, because many libc functions will alter the value of errno.
nfds	The original nfds, exactly as passed to the select(2) system call.
readfds	The original readfds, exactly as passed to the select(2) system call.
writefds	The original writefds, exactly as passed to the select(2) system call.
exceptfds	The original exceptfds, exactly as passed to the select(2) system call.
timeout	The original timeout, exactly as passed to the select(2) system call.

Definition at line 188 of file select.c.