libexplain  1.4.D001
Functions
libexplain/buffer/errno/fseek.c File Reference
#include <libexplain/ac/errno.h>
#include <libexplain/buffer/ebadf.h>
#include <libexplain/buffer/einval.h>
#include <libexplain/buffer/errno/fseek.h>
#include <libexplain/buffer/errno/lseek.h>
#include <libexplain/buffer/long.h>
#include <libexplain/buffer/lseek_whence.h>
#include <libexplain/buffer/stream.h>
#include <libexplain/explanation.h>
#include <libexplain/stream_to_fildes.h>

Go to the source code of this file.

Functions

static void explain_buffer_errno_fseek_system_call (explain_string_buffer_t *sb, int errnum, FILE *fp, long offset, int whence)
void explain_buffer_errno_fseek_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, FILE *fp, long offset, int whence)
void explain_buffer_errno_fseek (explain_string_buffer_t *sb, int errnum, FILE *fp, long offset, int whence)

Function Documentation

void explain_buffer_errno_fseek ( explain_string_buffer_t sb,
int  errnum,
FILE *  fp,
long  offset,
int  whence 
)

The explain_buffer_errno_fseek function is used to obtain an explanation of an error returned by the fseek(3) 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.
fpThe original fp, exactly as passed to the fseek(3) system call.
offsetThe original offset, exactly as passed to the fseek(3) system call.
whenceThe original whence, exactly as passed to the fseek(3) system call.

Definition at line 76 of file fseek.c.

void explain_buffer_errno_fseek_explanation ( explain_string_buffer_t sb,
int  errnum,
const char *  syscall_name,
FILE *  fp,
long  offset,
int  whence 
)

The explain_buffer_errno_fseek_explanation function is used to obtain the explanation (the part after "because") of an error returned by the fseek(3) 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.
fpThe original fp, exactly as passed to the fseek(3) system call.
offsetThe original offset, exactly as passed to the fseek(3) system call.
whenceThe original whence, exactly as passed to the fseek(3) system call.

Definition at line 48 of file fseek.c.

static void explain_buffer_errno_fseek_system_call ( explain_string_buffer_t sb,
int  errnum,
FILE *  fp,
long  offset,
int  whence 
) [static]

Definition at line 33 of file fseek.c.