libexplain/buffer/errno/execvp.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/stdlib.h>
#include <libexplain/ac/string.h>
#include <libexplain/ac/sys/stat.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/buffer/caption_name_type.h>
#include <libexplain/buffer/efault.h>
#include <libexplain/buffer/errno/execve.h>
#include <libexplain/buffer/errno/execvp.h>
#include <libexplain/buffer/pathname.h>
#include <libexplain/buffer/pointer.h>
#include <libexplain/explanation.h>
#include <libexplain/have_permission.h>
#include <libexplain/name_max.h>
#include <libexplain/is_efault.h>
#include <libexplain/sizeof.h>

Go to the source code of this file.

Functions
static size_t	count (char *const *p)
static void	explain_buffer_errno_execvp_system_call (explain_string_buffer_t *sb, int errnum, const char *pathname, char *const *argv)
static int	can_execute (const char *pathname)
void	explain_buffer_errno_execvp_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, const char *pathname, char *const *argv)
void	explain_buffer_errno_execvp (explain_string_buffer_t *sb, int errnum, const char *pathname, char *const *argv)

---

Function Documentation

static int can_execute

(

const char *

pathname

)

[static]

Definition at line 110 of file execvp.c.

static size_t count

(

char *const *

p

)

[static]

Definition at line 39 of file execvp.c.

void explain_buffer_errno_execvp	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	pathname,
		char *const *	argv
	)

The explain_buffer_errno_execvp function is used to obtain an explanation of an error returned by the execvp(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.
pathname	The original pathname, exactly as passed to the execvp(3) system call.
argv	The original argv, exactly as passed to the execvp(3) system call.

Definition at line 357 of file execvp.c.

void explain_buffer_errno_execvp_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	syscall_name,
		const char *	pathname,
		char *const *	argv
	)

Definition at line 124 of file execvp.c.

static void explain_buffer_errno_execvp_system_call	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	pathname,
		char *const *	argv
	)		[static]

Definition at line 54 of file execvp.c.