1*b30d1939SAndy Fiddaman /***********************************************************************
2*b30d1939SAndy Fiddaman * *
3*b30d1939SAndy Fiddaman * This software is part of the ast package *
4*b30d1939SAndy Fiddaman * Copyright (c) 1992-2012 AT&T Intellectual Property *
5*b30d1939SAndy Fiddaman * and is licensed under the *
6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 *
7*b30d1939SAndy Fiddaman * by AT&T Intellectual Property *
8*b30d1939SAndy Fiddaman * *
9*b30d1939SAndy Fiddaman * A copy of the License is available at *
10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html *
11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12*b30d1939SAndy Fiddaman * *
13*b30d1939SAndy Fiddaman * Information and Software Systems Research *
14*b30d1939SAndy Fiddaman * AT&T Research *
15*b30d1939SAndy Fiddaman * Florham Park NJ *
16*b30d1939SAndy Fiddaman * *
17*b30d1939SAndy Fiddaman * Glenn Fowler <gsf@research.att.com> *
18*b30d1939SAndy Fiddaman * David Korn <dgk@research.att.com> *
19*b30d1939SAndy Fiddaman * *
20*b30d1939SAndy Fiddaman ***********************************************************************/
21*b30d1939SAndy Fiddaman #pragma prototyped
22*b30d1939SAndy Fiddaman /*
23*b30d1939SAndy Fiddaman * David Korn
24*b30d1939SAndy Fiddaman * AT&T Research
25*b30d1939SAndy Fiddaman *
26*b30d1939SAndy Fiddaman * logname
27*b30d1939SAndy Fiddaman */
28*b30d1939SAndy Fiddaman
29*b30d1939SAndy Fiddaman static const char usage[] =
30*b30d1939SAndy Fiddaman "[-?\n@(#)$Id: logname (AT&T Research) 1999-04-30 $\n]"
31*b30d1939SAndy Fiddaman USAGE_LICENSE
32*b30d1939SAndy Fiddaman "[+NAME?logname - return the user's login name]"
33*b30d1939SAndy Fiddaman "[+DESCRIPTION?\blogname\b writes the users's login name to standard "
34*b30d1939SAndy Fiddaman "output. The login name is the string that is returned by the "
35*b30d1939SAndy Fiddaman "\bgetlogin\b(2) function. If \bgetlogin\b(2) does not return "
36*b30d1939SAndy Fiddaman "successfully, the corresponding to the real user id of the calling "
37*b30d1939SAndy Fiddaman "process is used instead.]"
38*b30d1939SAndy Fiddaman
39*b30d1939SAndy Fiddaman "\n"
40*b30d1939SAndy Fiddaman "\n\n"
41*b30d1939SAndy Fiddaman "\n"
42*b30d1939SAndy Fiddaman "[+EXIT STATUS?]{"
43*b30d1939SAndy Fiddaman "[+0?Successful Completion.]"
44*b30d1939SAndy Fiddaman "[+>0?An error occurred.]"
45*b30d1939SAndy Fiddaman "}"
46*b30d1939SAndy Fiddaman "[+SEE ALSO?\bgetlogin\b(2)]"
47*b30d1939SAndy Fiddaman ;
48*b30d1939SAndy Fiddaman
49*b30d1939SAndy Fiddaman
50*b30d1939SAndy Fiddaman #include <cmd.h>
51*b30d1939SAndy Fiddaman
52*b30d1939SAndy Fiddaman int
b_logname(int argc,char ** argv,Shbltin_t * context)53*b30d1939SAndy Fiddaman b_logname(int argc, char** argv, Shbltin_t* context)
54*b30d1939SAndy Fiddaman {
55*b30d1939SAndy Fiddaman register char* logname;
56*b30d1939SAndy Fiddaman
57*b30d1939SAndy Fiddaman cmdinit(argc, argv, context, ERROR_CATALOG, 0);
58*b30d1939SAndy Fiddaman for (;;)
59*b30d1939SAndy Fiddaman {
60*b30d1939SAndy Fiddaman switch (optget(argv, usage))
61*b30d1939SAndy Fiddaman {
62*b30d1939SAndy Fiddaman case ':':
63*b30d1939SAndy Fiddaman error(2, "%s", opt_info.arg);
64*b30d1939SAndy Fiddaman continue;
65*b30d1939SAndy Fiddaman case '?':
66*b30d1939SAndy Fiddaman error(ERROR_usage(2), "%s", opt_info.arg);
67*b30d1939SAndy Fiddaman continue;
68*b30d1939SAndy Fiddaman }
69*b30d1939SAndy Fiddaman break;
70*b30d1939SAndy Fiddaman }
71*b30d1939SAndy Fiddaman if (error_info.errors)
72*b30d1939SAndy Fiddaman error(ERROR_usage(2), "%s", optusage(NiL));
73*b30d1939SAndy Fiddaman if (!(logname = getlogin()))
74*b30d1939SAndy Fiddaman logname = fmtuid(getuid());
75*b30d1939SAndy Fiddaman sfputr(sfstdout, logname, '\n');
76*b30d1939SAndy Fiddaman return 0;
77*b30d1939SAndy Fiddaman }
78*b30d1939SAndy Fiddaman
79