libexplain/buffer/errno/popen.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/buffer/emfile.h>
#include <libexplain/buffer/enfile.h>
#include <libexplain/buffer/enomem.h>
#include <libexplain/buffer/errno/generic.h>
#include <libexplain/buffer/errno/popen.h>
#include <libexplain/buffer/pathname.h>
#include <libexplain/explanation.h>
#include <libexplain/string_flags.h>

Go to the source code of this file.

Functions
static void	explain_buffer_errno_popen_system_call (explain_string_buffer_t *sb, int errnum, const char *command, const char *flags)
static void	explain_buffer_errno_popen_explanation (explain_string_buffer_t *sb, int errnum, const char *command, const char *flags)
void	explain_buffer_errno_popen (explain_string_buffer_t *sb, int errnum, const char *command, const char *flags)

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Function Documentation

void explain_buffer_errno_popen	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	command,
		const char *	flags
	)

The explain_buffer_errno_popen function is used to obtain an explanation of an error returned by the popen(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 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.
command	The original command, exactly as passed to the popen(3) system call.
flags	The original flags, exactly as passed to the popen(3) system call.

Definition at line 83 of file popen.c.

static void explain_buffer_errno_popen_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	command,
		const char *	flags
	)		[static]

Definition at line 45 of file popen.c.

static void explain_buffer_errno_popen_system_call	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	command,
		const char *	flags
	)		[static]

Definition at line 32 of file popen.c.