libexplain/buffer/errno/setreuid.c File Reference

#include <libexplain/buffer/errno/setresuid.h>
#include <libexplain/buffer/errno/setreuid.h>
#include <libexplain/buffer/uid.h>
#include <libexplain/explanation.h>

Go to the source code of this file.

Functions
static void	explain_buffer_errno_setreuid_system_call (explain_string_buffer_t *sb, int errnum, uid_t ruid, uid_t euid)
void	explain_buffer_errno_setreuid_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, uid_t ruid, uid_t euid)
void	explain_buffer_errno_setreuid (explain_string_buffer_t *sb, int errnum, uid_t ruid, uid_t euid)

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Function Documentation

void explain_buffer_errno_setreuid	(	explain_string_buffer_t *	sb,
		int	errnum,
		uid_t	ruid,
		uid_t	euid
	)

The explain_buffer_errno_setreuid function is used to obtain an explanation of an error returned by the setreuid(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.
ruid	The original ruid, exactly as passed to the setreuid(2) system call.
euid	The original euid, exactly as passed to the setreuid(2) system call.

Definition at line 53 of file setreuid.c.

void explain_buffer_errno_setreuid_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	syscall_name,
		uid_t	ruid,
		uid_t	euid
	)

The explain_buffer_errno_setreuid_explanation function is used to obtain the explanation (the part after "because") of an error returned by the setreuid(2) 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.
ruid	The original ruid, exactly as passed to the setreuid(2) system call.
euid	The original euid, exactly as passed to the setreuid(2) system call.

Definition at line 39 of file setreuid.c.

static void explain_buffer_errno_setreuid_system_call	(	explain_string_buffer_t *	sb,
		int	errnum,
		uid_t	ruid,
		uid_t	euid
	)		[static]

Definition at line 26 of file setreuid.c.