1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin * *
3da2e3ebdSchin * This software is part of the ast package *
4*3e14f97fSRoger A. Faulkner * Copyright (c) 1992-2010 AT&T Intellectual Property *
5da2e3ebdSchin * and is licensed under the *
6da2e3ebdSchin * Common Public License, Version 1.0 *
77c2fbfb3SApril Chin * by AT&T Intellectual Property *
8da2e3ebdSchin * *
9da2e3ebdSchin * A copy of the License is available at *
10da2e3ebdSchin * http://www.opensource.org/licenses/cpl1.0.txt *
11da2e3ebdSchin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
12da2e3ebdSchin * *
13da2e3ebdSchin * Information and Software Systems Research *
14da2e3ebdSchin * AT&T Research *
15da2e3ebdSchin * Florham Park NJ *
16da2e3ebdSchin * *
17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> *
18da2e3ebdSchin * David Korn <dgk@research.att.com> *
19da2e3ebdSchin * *
20da2e3ebdSchin ***********************************************************************/
21da2e3ebdSchin #pragma prototyped
22da2e3ebdSchin /*
23da2e3ebdSchin * David Korn
24da2e3ebdSchin * AT&T Research
25da2e3ebdSchin *
26da2e3ebdSchin * logname
27da2e3ebdSchin */
28da2e3ebdSchin
29da2e3ebdSchin static const char usage[] =
30da2e3ebdSchin "[-?\n@(#)$Id: logname (AT&T Research) 1999-04-30 $\n]"
31da2e3ebdSchin USAGE_LICENSE
32da2e3ebdSchin "[+NAME?logname - return the user's login name]"
33da2e3ebdSchin "[+DESCRIPTION?\blogname\b writes the users's login name to standard "
34da2e3ebdSchin "output. The login name is the string that is returned by the "
35da2e3ebdSchin "\bgetlogin\b(2) function. If \bgetlogin\b(2) does not return "
36da2e3ebdSchin "successfully, the corresponding to the real user id of the calling "
37da2e3ebdSchin "process is used instead.]"
38da2e3ebdSchin
39da2e3ebdSchin "\n"
40da2e3ebdSchin "\n\n"
41da2e3ebdSchin "\n"
42da2e3ebdSchin "[+EXIT STATUS?]{"
43da2e3ebdSchin "[+0?Successful Completion.]"
44da2e3ebdSchin "[+>0?An error occurred.]"
45da2e3ebdSchin "}"
46da2e3ebdSchin "[+SEE ALSO?\bgetlogin\b(2)]"
47da2e3ebdSchin ;
48da2e3ebdSchin
49da2e3ebdSchin
50da2e3ebdSchin #include <cmd.h>
51da2e3ebdSchin
52da2e3ebdSchin int
b_logname(int argc,char ** argv,void * context)53da2e3ebdSchin b_logname(int argc, char** argv, void* context)
54da2e3ebdSchin {
55da2e3ebdSchin register char* logname;
56da2e3ebdSchin
57da2e3ebdSchin cmdinit(argc, argv, context, ERROR_CATALOG, 0);
58da2e3ebdSchin for (;;)
59da2e3ebdSchin {
60da2e3ebdSchin switch (optget(argv, usage))
61da2e3ebdSchin {
62da2e3ebdSchin case ':':
63da2e3ebdSchin error(2, "%s", opt_info.arg);
64da2e3ebdSchin continue;
65da2e3ebdSchin case '?':
66da2e3ebdSchin error(ERROR_usage(2), "%s", opt_info.arg);
67da2e3ebdSchin continue;
68da2e3ebdSchin }
69da2e3ebdSchin break;
70da2e3ebdSchin }
71da2e3ebdSchin if (error_info.errors)
72da2e3ebdSchin error(ERROR_usage(2), "%s", optusage(NiL));
73da2e3ebdSchin if (!(logname = getlogin()))
74da2e3ebdSchin logname = fmtuid(getuid());
75da2e3ebdSchin sfputr(sfstdout, logname, '\n');
76da2e3ebdSchin return 0;
77da2e3ebdSchin }
78da2e3ebdSchin
79