libexplain  1.4.D001
Functions
libexplain/buffer/errno/writev.c File Reference
#include <libexplain/ac/errno.h>
#include <libexplain/ac/stdio.h>
#include <libexplain/ac/sys/uio.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/buffer/efault.h>
#include <libexplain/buffer/eintr.h>
#include <libexplain/buffer/einval.h>
#include <libexplain/buffer/enosys.h>
#include <libexplain/buffer/errno/write.h>
#include <libexplain/buffer/errno/writev.h>
#include <libexplain/buffer/fildes.h>
#include <libexplain/buffer/int.h>
#include <libexplain/buffer/iovec.h>
#include <libexplain/buffer/long_long.h>
#include <libexplain/buffer/ssize_t.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_writev_system_call (explain_string_buffer_t *sb, int errnum, int fildes, const struct iovec *data, int data_size)
void explain_buffer_errno_writev_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, int fildes, const struct iovec *data, int data_size)
void explain_buffer_errno_writev (explain_string_buffer_t *sb, int errnum, int fildes, const struct iovec *data, int data_size)

Function Documentation

void explain_buffer_errno_writev ( explain_string_buffer_t sb,
int  errnum,
int  fildes,
const struct iovec *  data,
int  data_size 
)

The explain_buffer_errno_writev function is used to obtain an explanation of an error returned by the writev(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 suitable 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.
fildesThe original fildes, exactly as passed to the writev(2) system call.
dataThe original data, exactly as passed to the writev(2) system call.
data_sizeThe original data_size, exactly as passed to the writev(2) system call.

Definition at line 186 of file writev.c.

void explain_buffer_errno_writev_explanation ( explain_string_buffer_t sb,
int  errnum,
const char *  syscall_name,
int  fildes,
const struct iovec *  data,
int  data_size 
)

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

Parameters:
sbThe string buffer to print the message into. If a suitable 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.
syscall_nameThe name of the offending system call.
fildesThe original fildes, exactly as passed to the writev(2) system call.
dataThe original data, exactly as passed to the writev(2) system call.
data_sizeThe original data_size, exactly as passed to the writev(2) system call.

Definition at line 56 of file writev.c.

static void explain_buffer_errno_writev_system_call ( explain_string_buffer_t sb,
int  errnum,
int  fildes,
const struct iovec *  data,
int  data_size 
) [static]

Definition at line 41 of file writev.c.