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Diffstat (limited to 'usr/src/lib/libcmd/common/logname.c')
| -rw-r--r-- | usr/src/lib/libcmd/common/logname.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/usr/src/lib/libcmd/common/logname.c b/usr/src/lib/libcmd/common/logname.c new file mode 100644 index 0000000000..fe771e95ed --- /dev/null +++ b/usr/src/lib/libcmd/common/logname.c @@ -0,0 +1,78 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1992-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped +/* + * David Korn + * AT&T Research + * + * logname + */ + +static const char usage[] = +"[-?\n@(#)$Id: logname (AT&T Research) 1999-04-30 $\n]" +USAGE_LICENSE +"[+NAME?logname - return the user's login name]" +"[+DESCRIPTION?\blogname\b writes the users's login name to standard " + "output. The login name is the string that is returned by the " + "\bgetlogin\b(2) function. If \bgetlogin\b(2) does not return " + "successfully, the corresponding to the real user id of the calling " + "process is used instead.]" + +"\n" +"\n\n" +"\n" +"[+EXIT STATUS?]{" + "[+0?Successful Completion.]" + "[+>0?An error occurred.]" +"}" +"[+SEE ALSO?\bgetlogin\b(2)]" +; + + +#include <cmd.h> + +int +b_logname(int argc, char** argv, void* context) +{ + register char* logname; + + cmdinit(argc, argv, context, ERROR_CATALOG, 0); + for (;;) + { + switch (optget(argv, usage)) + { + case ':': + error(2, "%s", opt_info.arg); + continue; + case '?': + error(ERROR_usage(2), "%s", opt_info.arg); + continue; + } + break; + } + if (error_info.errors) + error(ERROR_usage(2), "%s", optusage(NiL)); + if (!(logname = getlogin())) + logname = fmtuid(getuid()); + sfputr(sfstdout, logname, '\n'); + return 0; +} + |