libexplain  1.4.D001
Functions
libexplain/buffer/errno/freopen.c File Reference
#include <libexplain/ac/errno.h>
#include <libexplain/ac/fcntl.h>
#include <libexplain/buffer/ebadf.h>
#include <libexplain/buffer/errno/fclose.h>
#include <libexplain/buffer/errno/fflush.h>
#include <libexplain/buffer/errno/fopen.h>
#include <libexplain/buffer/errno/freopen.h>
#include <libexplain/buffer/note/underlying_fildes_open.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_freopen_system_call (explain_string_buffer_t *sb, int errnum, const char *pathname, const char *flags, FILE *fp)
static void explain_buffer_errno_freopen_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, const char *pathname, const char *flags, FILE *fp)
void explain_buffer_errno_freopen (struct explain_string_buffer_t *sb, int errnum, const char *pathname, const char *flags, FILE *fp)

Function Documentation

void explain_buffer_errno_freopen ( struct explain_string_buffer_t sb,
int  errnum,
const char *  path,
const char *  flags,
FILE *  fp 
)

The explain_buffer_errno_freopen function is used to obtain an explanation of an error returned by the freopen(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 in which the message is being constructed. If a safe buffer is specified, this function is thread safe.
errnumThe error value to be decoded, usually obtain 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.
pathThe original path, exactly has passed to the freopen(3) system call.
flagsThe original flags, exactly has passed to the freopen(3) system call.
fpThe original mode, exactly has passed to the freopen(3) system call.

Definition at line 89 of file freopen.c.

static void explain_buffer_errno_freopen_explanation ( explain_string_buffer_t sb,
int  errnum,
const char *  syscall_name,
const char *  pathname,
const char *  flags,
FILE *  fp 
) [static]

Definition at line 50 of file freopen.c.

static void explain_buffer_errno_freopen_system_call ( explain_string_buffer_t sb,
int  errnum,
const char *  pathname,
const char *  flags,
FILE *  fp 
) [static]

Definition at line 35 of file freopen.c.