libexplain  1.4.D001
Functions
libexplain/buffer/errno/select.c File Reference
#include <libexplain/ac/errno.h>
#include <libexplain/ac/fcntl.h>
#include <libexplain/ac/stdio.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/select.h>
#include <libexplain/buffer/fd_set.h>
#include <libexplain/buffer/timeval.h>
#include <libexplain/explanation.h>
#include <libexplain/option.h>
#include <libexplain/is_efault.h>

Go to the source code of this file.

Functions

static void explain_buffer_errno_select_system_call (explain_string_buffer_t *sb, int errnum, int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)
static int file_descriptor_is_open (int fildes)
static void explain_buffer_errno_select_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)
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)

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:
sbThe string buffer to print the message into. If a safe buffer is specified, this function is thread safe.
errnumThe 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.
nfdsThe original nfds, exactly as passed to the select(2) system call.
readfdsThe original readfds, exactly as passed to the select(2) system call.
writefdsThe original writefds, exactly as passed to the select(2) system call.
exceptfdsThe original exceptfds, exactly as passed to the select(2) system call.
timeoutThe original timeout, exactly as passed to the select(2) system call.

Definition at line 188 of file select.c.

static void explain_buffer_errno_select_explanation ( explain_string_buffer_t sb,
int  errnum,
const char *  syscall_name,
int  nfds,
fd_set *  readfds,
fd_set *  writefds,
fd_set *  exceptfds,
struct timeval *  timeout 
) [static]

Definition at line 66 of file select.c.

static void explain_buffer_errno_select_system_call ( explain_string_buffer_t sb,
int  errnum,
int  nfds,
fd_set *  readfds,
fd_set *  writefds,
fd_set *  exceptfds,
struct timeval *  timeout 
) [static]

Definition at line 37 of file select.c.

static int file_descriptor_is_open ( int  fildes) [static]

Definition at line 56 of file select.c.