CUSERID(3C) Standard C Library Functions CUSERID(3C)
cuserid - get character login name of the user
#include <stdio.h>
char *cuserid(char *s);
The cuserid() function generates a character-string representation of
the login name under which the owner of the current process is logged
in. If s is a null pointer, this representation is generated in an
internal static area whose address is returned. Otherwise, s is
assumed to point to an array of at least L_cuserid characters; the
representation is left in this array. The constant L_cuserid is
defined in the <stdio.h> header.
In multithreaded applications, the caller must always supply an array
s for the return value.
If the login name cannot be found, cuserid() returns a null pointer.
If s is not a null pointer, the null character `\0' will be placed at
s[0].
See attributes(7) for descriptions of the following attributes:
+---------------+-----------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------+
|MT-Level | MT-Safe |
+---------------+-----------------+
getlogin(3C), getpwnam(3C), attributes(7)
December 30, 1996 CUSERID(3C)
NAME
cuserid - get character login name of the user
SYNOPSIS
#include <stdio.h>
char *cuserid(char *s);
DESCRIPTION
The cuserid() function generates a character-string representation of
the login name under which the owner of the current process is logged
in. If s is a null pointer, this representation is generated in an
internal static area whose address is returned. Otherwise, s is
assumed to point to an array of at least L_cuserid characters; the
representation is left in this array. The constant L_cuserid is
defined in the <stdio.h> header.
In multithreaded applications, the caller must always supply an array
s for the return value.
RETURN VALUES
If the login name cannot be found, cuserid() returns a null pointer.
If s is not a null pointer, the null character `\0' will be placed at
s[0].
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+-----------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------+
|MT-Level | MT-Safe |
+---------------+-----------------+
SEE ALSO
getlogin(3C), getpwnam(3C), attributes(7)
December 30, 1996 CUSERID(3C)