14887Schin /***********************************************************************
24887Schin * *
34887Schin * This software is part of the ast package *
4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1992-2010 AT&T Intellectual Property *
54887Schin * and is licensed under the *
64887Schin * Common Public License, Version 1.0 *
78462SApril.Chin@Sun.COM * by AT&T Intellectual Property *
84887Schin * *
94887Schin * A copy of the License is available at *
104887Schin * http://www.opensource.org/licenses/cpl1.0.txt *
114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
124887Schin * *
134887Schin * Information and Software Systems Research *
144887Schin * AT&T Research *
154887Schin * Florham Park NJ *
164887Schin * *
174887Schin * Glenn Fowler <gsf@research.att.com> *
184887Schin * David Korn <dgk@research.att.com> *
194887Schin * *
204887Schin ***********************************************************************/
214887Schin #pragma prototyped
224887Schin /*
234887Schin * David Korn
244887Schin * AT&T Research
254887Schin *
264887Schin * logname
274887Schin */
284887Schin
294887Schin static const char usage[] =
304887Schin "[-?\n@(#)$Id: logname (AT&T Research) 1999-04-30 $\n]"
314887Schin USAGE_LICENSE
324887Schin "[+NAME?logname - return the user's login name]"
334887Schin "[+DESCRIPTION?\blogname\b writes the users's login name to standard "
344887Schin "output. The login name is the string that is returned by the "
354887Schin "\bgetlogin\b(2) function. If \bgetlogin\b(2) does not return "
364887Schin "successfully, the corresponding to the real user id of the calling "
374887Schin "process is used instead.]"
384887Schin
394887Schin "\n"
404887Schin "\n\n"
414887Schin "\n"
424887Schin "[+EXIT STATUS?]{"
434887Schin "[+0?Successful Completion.]"
444887Schin "[+>0?An error occurred.]"
454887Schin "}"
464887Schin "[+SEE ALSO?\bgetlogin\b(2)]"
474887Schin ;
484887Schin
494887Schin
504887Schin #include <cmd.h>
514887Schin
524887Schin int
b_logname(int argc,char ** argv,void * context)534887Schin b_logname(int argc, char** argv, void* context)
544887Schin {
554887Schin register char* logname;
564887Schin
574887Schin cmdinit(argc, argv, context, ERROR_CATALOG, 0);
584887Schin for (;;)
594887Schin {
604887Schin switch (optget(argv, usage))
614887Schin {
624887Schin case ':':
634887Schin error(2, "%s", opt_info.arg);
644887Schin continue;
654887Schin case '?':
664887Schin error(ERROR_usage(2), "%s", opt_info.arg);
674887Schin continue;
684887Schin }
694887Schin break;
704887Schin }
714887Schin if (error_info.errors)
724887Schin error(ERROR_usage(2), "%s", optusage(NiL));
734887Schin if (!(logname = getlogin()))
744887Schin logname = fmtuid(getuid());
754887Schin sfputr(sfstdout, logname, '\n');
764887Schin return 0;
774887Schin }
784887Schin
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