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cuserid |
Portability: | UNIX compatible |
SYNOPSIS | |
DESCRIPTION | |
RETURN VALUE | |
DIAGNOSTICS | |
IMPLEMENTATION | |
EXAMPLE | |
SEE ALSO |
SYNOPSIS |
#include <lcio.h> char *cuserid(char *name);
DESCRIPTION |
cuserid
gets the userid associated with the current job or interactive session.
The argument to
cuserid
should be
NULL
, or it should address
a character array (
name
) whose size is
at least
L_cuserid
. The symbol
L_cuserid
is defined in the header file
<lcio.h>
.
If the argument is not
NULL
, the userid (followed by '\0') is copied into
name
. If the argument is
NULL
,
the userid can only be accessed by using the value returned by
cuserid
.
RETURN VALUE |
cuserid
returns a pointer to the userid. If the argument to
cuserid
is
NULL
, the return value
is in static storage and may be overlaid by the next call to
cuserid
.
DIAGNOSTICS |
If no userid can be determined,
cuserid
returns a pointer to a string with length
0.
IMPLEMENTATION |
The size of the string where the userid
is stored is determined by the constant
L_cuserid
, defined in the header file
<lcio.h>
.
Under CMS, the userid is returned by the VM control program (CP).
EXAMPLE |
#include <lcio.h> #include <time.h> #include <stdlib.h> main() { FILE *logfile; char username[L_cuserid]; time_t now; /* Open SYSLOG to add data to the end of the file. */ logfile = fopen("ddn:SYSLOG", "a"); if (!logfile){ puts("Failed to open log file."); exit(EXIT_FAILURE); } cuserid(username); /* Get userid. */ time(&now); fprintf(logfile, "File logfile last accessed by %s on %s", username, ctime(&now)); fclose(logfile); }
SEE ALSO |
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