libexplain/buffer/errno/gethostid.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/fcntl.h>
#include <libexplain/buffer/errno/open.h>
#include <libexplain/buffer/errno/gethostid.h>
#include <libexplain/buffer/pathname.h>
#include <libexplain/explanation.h>

Go to the source code of this file.

Defines
#define	HOSTIDFILE   "/etc/hostid"
Functions
static void	explain_buffer_errno_gethostid_system_call (explain_string_buffer_t *sb, int errnum)
void	explain_buffer_errno_gethostid_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name)
void	explain_buffer_errno_gethostid (explain_string_buffer_t *sb, int errnum)

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Define Documentation

#define HOSTIDFILE   "/etc/hostid"

Definition at line 29 of file gethostid.c.

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Function Documentation

void explain_buffer_errno_gethostid	(	explain_string_buffer_t *	sb,
		int	errnum
	)

The explain_buffer_errno_gethostid function is used to obtain an explanation of an error returned by the gethostid(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:

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.

Definition at line 71 of file gethostid.c.

void explain_buffer_errno_gethostid_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	syscall_name
	)

The explain_buffer_errno_gethostid_explanation function is used to obtain the explanation (the part after "because") of an error returned by the gethostid(3) 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.

Definition at line 48 of file gethostid.c.

static void explain_buffer_errno_gethostid_system_call	(	explain_string_buffer_t *	sb,
		int	errnum
	)		[static]

Definition at line 34 of file gethostid.c.