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Annotation of 43BSDTahoe/ucb/whoami.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: char copyright[] =
                     20: "@(#) Copyright (c) 1988 Regents of the University of California.\n\
                     21:  All rights reserved.\n";
                     22: #endif /* not lint */
                     23: 
                     24: #ifndef lint
                     25: static char sccsid[] = "@(#)whoami.c   5.3 (Berkeley) 6/29/88";
                     26: #endif /* not lint */
                     27: 
                     28: #include <sys/types.h>
                     29: #include <pwd.h>
                     30: 
                     31: main()
                     32: {
                     33:        struct passwd *p, *getpwuid();
                     34:        uid_t uid;
                     35: 
                     36:        uid = geteuid();
                     37:        if (!(p = getpwuid(uid))) {
                     38:                printf("whoami: no login associated with uid %u.\n", uid);
                     39:                exit(1);
                     40:        }
                     41:        printf("%s\n", p->pw_name);
                     42:        exit(0);
                     43: }

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