libexplain/buffer/errno/getgroups.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/limits.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/buffer/efault.h>
#include <libexplain/buffer/einval.h>
#include <libexplain/buffer/errno/generic.h>
#include <libexplain/buffer/errno/getgroups.h>
#include <libexplain/buffer/pointer.h>
#include <libexplain/explanation.h>
#include <libexplain/option.h>

Go to the source code of this file.

Functions
static void	explain_buffer_errno_getgroups_system_call (explain_string_buffer_t *sb, int errnum, int data_size, gid_t *data)
static void	explain_buffer_errno_getgroups_explanation (explain_string_buffer_t *sb, int errnum, int data_size, gid_t *data)
void	explain_buffer_errno_getgroups (explain_string_buffer_t *sb, int errnum, int data_size, gid_t *data)

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Function Documentation

void explain_buffer_errno_getgroups	(	explain_string_buffer_t *	sb,
		int	errnum,
		int	data_size,
		gid_t *	data
	)

The explain_buffer_errno_getgroups function is used to obtain an explanation of an error returned by the getgroups(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_size	The original data_size, exactly as passed to the getgroups(2) system call.
data	The original data, exactly as passed to the getgroups(2) system call.

Definition at line 88 of file getgroups.c.

static void explain_buffer_errno_getgroups_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		int	data_size,
		gid_t *	data
	)		[static]

Definition at line 46 of file getgroups.c.

static void explain_buffer_errno_getgroups_system_call	(	explain_string_buffer_t *	sb,
		int	errnum,
		int	data_size,
		gid_t *	data
	)		[static]

Definition at line 33 of file getgroups.c.