1 /*
2  * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
3  *
4  * This program is free software; you can redistribute it and/or modify it
5  * under the terms of version 2 of the GNU General Public License as
6  * published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it would be useful, but
9  * WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11  *
12  * You should have received a copy of the GNU General Public License along
13  * with this program; if not, write the Free Software Foundation, Inc.,
14  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
15  *
16  */
17 /**********************************************************
18  *
19  *    TEST IDENTIFIER	: setdomainname01
20  *
21  *    EXECUTED BY	: root / superuser
22  *
23  *    TEST TITLE	: Basic test for setdomainame(2)
24  *
25  *    TEST CASE TOTAL	: 1
26  *
27  *    AUTHOR		: Saji Kumar.V.R <saji.kumar@wipro.com>
28  *
29  *    SIGNALS
30  * 	Uses SIGUSR1 to pause before test if option set.
31  * 	(See the parse_opts(3) man page).
32  *
33  *    DESCRIPTION
34  *	This is a Phase I test for the setdomainname(2) system call.
35  *	It is intended to provide a limited exposure of the system call.
36  *
37  * 	Setup:
38  * 	  Setup signal handling.
39  *	  Pause for SIGUSR1 if option specified.
40  *	  Save the current domainname.
41  *
42  * 	Test:
43  *	 Loop if the proper options are given.
44  * 	  Execute system call
45  *	  Check return code, if system call failed (return=-1)
46  *		Log the errno and Issue a FAIL message.
47  *	  Otherwise, Issue a PASS message.
48  *
49  * 	Cleanup:
50  *	  Restore old domain name.
51  * 	  Print errno log and/or timing stats if options given
52  *
53  * USAGE:  <for command-line>
54  *  setdomainname01  [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
55  *			where,  -c n : Run n copies concurrently.
56  *				-e   : Turn on errno logging.
57  *				-h   : Show help screen
58  *				-f   : Turn off functional testing
59  *				-i n : Execute test n times.
60  *				-I x : Execute test for x seconds.
61  *				-p   : Pause for SIGUSR1 before starting
62  *				-P x : Pause for x seconds between iterations.
63  *				-t   : Turn on syscall timing.
64  *
65  ****************************************************************/
66 
67 #include <errno.h>
68 #include <string.h>
69 #include <sys/utsname.h>
70 #include "test.h"
71 
72 #define MAX_NAME_LEN _UTSNAME_DOMAIN_LENGTH
73 
74 static void setup();
75 static void cleanup();
76 
77 char *TCID = "setdomainname01";
78 int TST_TOTAL = 1;
79 
80 static char *test_domain_name = "test_dom";
81 static char old_domain_name[MAX_NAME_LEN];
82 
83 int main(int ac, char **av)
84 {
85 
86 	int lc;
87 
88 	tst_parse_opts(ac, av, NULL, NULL);
89 
90 	setup();
91 
92 	for (lc = 0; TEST_LOOPING(lc); lc++) {
93 
94 		tst_count = 0;
95 
96 		/*
97 		 * Call setdomainname(2)
98 		 */
99 		TEST(setdomainname(test_domain_name, sizeof(test_domain_name)));
100 
101 		/* check return code */
102 		if (TEST_RETURN == -1) {
103 			tst_resm(TFAIL, "setdomainname() Failed, errno = %d :"
104 				 " %s", TEST_ERRNO, strerror(TEST_ERRNO));
105 		} else {
106 			tst_resm(TPASS, "setdomainname() returned %ld, "
107 				 "Domain name set to \"%s\"", TEST_RETURN,
108 				 test_domain_name);
109 		}
110 
111 	}
112 
113 	/* cleanup and exit */
114 	cleanup();
115 	tst_exit();
116 
117 }
118 
119 /* setup() - performs all ONE TIME setup for this test */
120 void setup(void)
121 {
122 	tst_require_root();
123 
124 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
125 
126 	/* Save current domain name */
127 	if ((getdomainname(old_domain_name, sizeof(old_domain_name))) < 0) {
128 		tst_brkm(TBROK, NULL, "getdomainname() failed while"
129 			 " getting current domain name");
130 	}
131 
132 	TEST_PAUSE;
133 
134 }
135 
136 /*
137  *cleanup() -  performs all ONE TIME cleanup for this test at
138  *		completion or premature exit.
139  */
140 void cleanup(void)
141 {
142 
143 	/* Restore domain name */
144 	if ((setdomainname(old_domain_name, strlen(old_domain_name))) < 0) {
145 		tst_resm(TWARN, "setdomainname() failed while restoring"
146 			 " domainname to \"%s\"", old_domain_name);
147 	}
148 
149 }
150