libexplain/buffer/errno/waitpid.h File Reference

#include <libexplain/string_buffer.h>

Go to the source code of this file.

Functions
void	explain_buffer_errno_waitpid (explain_string_buffer_t *sb, int errnum, int pid, int *status, int options)
void	explain_buffer_errno_waitpid_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, int pid, int *status, int options)

---

Function Documentation

void explain_buffer_errno_waitpid	(	explain_string_buffer_t *	sb,
		int	errnum,
		int	pid,
		int *	status,
		int	options
	)

The explain_buffer_errno_waitpid function is used to obtain an explanation of an error returned by the waitpid(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 safe 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.
pid	The original pid, exactly as passed to the waitpid(2) system call.
status	The original status, exactly as passed to the waitpid(2) system call.
options	The original options, exactly as passed to the waitpid(2) system call.

Definition at line 188 of file waitpid.c.

void explain_buffer_errno_waitpid_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	syscall_name,
		int	pid,
		int *	status,
		int	options
	)

The explain_buffer_errno_waitpid_explanation function is used by explain_buffer_errno_waitpid function (and others) to obtain an explanation of an error returned by one of the wait*(2) system calls.

Parameters:

sb	The string buffer to print the message into.
errnum	The error value to be decoded.
syscall_name	The name of the offending system call.
pid	The original pid, exactly as passed to the waitpid(2) system call.
status	The original status, exactly as passed to the waitpid(2) system call.
options	The original options, exactly as passed to the waitpid(2) system call.

Definition at line 65 of file waitpid.c.