#include <libexplain/ac/errno.h>
#include <libexplain/ac/fcntl.h>
#include <libexplain/ac/sys/mman.h>
#include <libexplain/ac/sys/resource.h>
#include <libexplain/ac/sys/stat.h>
#include <libexplain/buffer/eacces.h>
#include <libexplain/buffer/eagain.h>
#include <libexplain/buffer/ebadf.h>
#include <libexplain/buffer/einval.h>
#include <libexplain/buffer/enfile.h>
#include <libexplain/buffer/enodev.h>
#include <libexplain/buffer/enomem.h>
#include <libexplain/buffer/eperm.h>
#include <libexplain/buffer/errno/generic.h>
#include <libexplain/buffer/errno/mmap.h>
#include <libexplain/buffer/etxtbsy.h>
#include <libexplain/buffer/fildes.h>
#include <libexplain/buffer/gettext.h>
#include <libexplain/buffer/int.h>
#include <libexplain/buffer/mmap_flags.h>
#include <libexplain/buffer/mmap_prot.h>
#include <libexplain/buffer/mount_point.h>
#include <libexplain/buffer/must_be_multiple_of_page_size.h>
#include <libexplain/buffer/off_t.h>
#include <libexplain/buffer/open_flags.h>
#include <libexplain/buffer/pointer.h>
#include <libexplain/buffer/size_t.h>
#include <libexplain/buffer/wrong_file_type.h>
#include <libexplain/explanation.h>
#include <libexplain/getpagesize.h>
#include <libexplain/parse_bits.h>

Functions
static void	explain_buffer_errno_mmap_system_call (explain_string_buffer_t sb, int errnum, void data, size_t data_size, int prot, int flags, int fildes, off_t offset)
void	explain_buffer_errno_mmap_explanation (explain_string_buffer_t sb, int errnum, const char syscall_name, void *data, size_t data_size, int prot, int flags, int fildes, off_t offset)
void	explain_buffer_errno_mmap (explain_string_buffer_t sb, int errnum, void data, size_t data_size, int prot, int flags, int fildes, off_t offset)

Function Documentation

void explain_buffer_errno_mmap	(	explain_string_buffer_t *	sb,
		int	errnum,
		void *	data,
		size_t	data_size,
		int	prot,
		int	flags,
		int	fildes,
		off_t	offset
	)

The explain_buffer_errno_mmap function is used to obtain an explanation of an error returned by the mmap(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.
data	The original data, exactly as passed to the mmap(2) system call.
data_size	The original data_size, exactly as passed to the mmap(2) system call.
prot	The original prot, exactly as passed to the mmap(2) system call.
flags	The original flags, exactly as passed to the mmap(2) system call.
fildes	The original fildes, exactly as passed to the mmap(2) system call.
offset	The original offset, exactly as passed to the mmap(2) system call.

Definition at line 401 of file mmap.c.

void explain_buffer_errno_mmap_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	syscall_name,
		void *	data,
		size_t	data_size,
		int	prot,
		int	flags,
		int	fildes,
		off_t	offset
	)

The explain_buffer_errno_mmap_explanation function is used to obtain the explanation (the part after "because") of an error returned by the mmap(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.
data	The original data, exactly as passed to the mmap(2) system call.
data_size	The original data_size, exactly as passed to the mmap(2) system call.
prot	The original prot, exactly as passed to the mmap(2) system call.
flags	The original flags, exactly as passed to the mmap(2) system call.
fildes	The original fildes, exactly as passed to the mmap(2) system call.
offset	The original offset, exactly as passed to the mmap(2) system call.

xgettext: This message is used to explain an EAGAIN error reported by the mmap(2) syatem call, in the case where the file has been locked.

Definition at line 85 of file mmap.c.

static void explain_buffer_errno_mmap_system_call	(	explain_string_buffer_t *	sb,
		int	errnum,
		void *	data,
		size_t	data_size,
		int	prot,
		int	flags,
		int	fildes,
		off_t	offset
	)		`[static]`

Definition at line 54 of file mmap.c.

Functions

Function Documentation