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Annotation of 43BSDReno/usr.bin/whoami/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 provided
                      6:  * that: (1) source distributions retain this entire copyright notice and
                      7:  * comment, and (2) distributions including binaries display the following
                      8:  * acknowledgement:  ``This product includes software developed by the
                      9:  * University of California, Berkeley and its contributors'' in the
                     10:  * documentation or other materials provided with the distribution and in
                     11:  * all advertising materials mentioning features or use of this software.
                     12:  * Neither the name of the University nor the names of its contributors may
                     13:  * be used to endorse or promote products derived from this software without
                     14:  * specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     16:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     17:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: char copyright[] =
                     22: "@(#) Copyright (c) 1988 Regents of the University of California.\n\
                     23:  All rights reserved.\n";
                     24: #endif /* not lint */
                     25: 
                     26: #ifndef lint
                     27: static char sccsid[] = "@(#)whoami.c   5.4 (Berkeley) 6/1/90";
                     28: #endif /* not lint */
                     29: 
                     30: #include <sys/types.h>
                     31: #include <pwd.h>
                     32: 
                     33: main()
                     34: {
                     35:        struct passwd *p, *getpwuid();
                     36:        uid_t uid;
                     37: 
                     38:        uid = geteuid();
                     39:        if (!(p = getpwuid(uid))) {
                     40:                printf("whoami: no login associated with uid %u.\n", uid);
                     41:                exit(1);
                     42:        }
                     43:        printf("%s\n", p->pw_name);
                     44:        exit(0);
                     45: }

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