libexplain/buffer/errno/poll.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/fcntl.h>
#include <libexplain/ac/stdio.h>
#include <libexplain/ac/sys/resource.h>
#include <libexplain/buffer/ebadf.h>
#include <libexplain/buffer/efault.h>
#include <libexplain/buffer/eintr.h>
#include <libexplain/buffer/enomem.h>
#include <libexplain/buffer/errno/generic.h>
#include <libexplain/buffer/errno/poll.h>
#include <libexplain/buffer/gettext.h>
#include <libexplain/buffer/int.h>
#include <libexplain/buffer/pollfd.h>
#include <libexplain/explanation.h>
#include <libexplain/is_efault.h>

Go to the source code of this file.

Functions
static void	explain_buffer_errno_poll_system_call (explain_string_buffer_t *sb, int errnum, struct pollfd *data, int data_size, int timeout)
static int	ebadf (int fildes)
void	explain_buffer_errno_poll_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, struct pollfd *data, int data_size, int timeout)
void	explain_buffer_errno_poll (explain_string_buffer_t *sb, int errnum, struct pollfd *data, int data_size, int timeout)

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Function Documentation

static int ebadf

(

int

fildes

)

[static]

Definition at line 53 of file poll.c.

void explain_buffer_errno_poll	(	explain_string_buffer_t *	sb,
		int	errnum,
		struct pollfd *	fds,
		int	nfds,
		int	timeout
	)

The explain_buffer_errno_poll function is used to obtain an explanation of an error returned by the poll(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 suitable 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.
fds	The original fds, exactly as passed to the poll(2) system call.
nfds	The original nfds, exactly as passed to the poll(2) system call.
timeout	The original timeout, exactly as passed to the poll(2) system call.

Definition at line 145 of file poll.c.

void explain_buffer_errno_poll_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	syscall_name,
		struct pollfd *	fds,
		int	nfds,
		int	timeout
	)

The explain_buffer_errno_poll_explanation function is used to obtain the explanation (the part after "because") of an error returned by the poll(2) system call (and similar).

Parameters:

sb	The string buffer to print the message into. If a suitable 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.
syscall_name	The name of the offending system call.
fds	The original fds, exactly as passed to the poll(2) system call.
nfds	The original nfds, exactly as passed to the poll(2) system call.
timeout	The original timeout, exactly as passed to the poll(2) system call.

Definition at line 62 of file poll.c.

static void explain_buffer_errno_poll_system_call	(	explain_string_buffer_t *	sb,
		int	errnum,
		struct pollfd *	data,
		int	data_size,
		int	timeout
	)		[static]

Definition at line 38 of file poll.c.