1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2002
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /* 11/12/2002 Port to LTP robbiew@us.ibm.com */
21 /* 06/30/2001 Port to Linux nsharoff@us.ibm.com */
22
23 /*
24 * NAME
25 * rename14.c - create and rename files
26 *
27 * CALLS
28 * create, unlink, rename
29 *
30 * ALGORITHM
31 * Creates two processes. One creates and unlinks a file.
32 * The other renames that file.
33 *
34 */
35
36 #include <stdio.h>
37 #include <errno.h>
38 #include <signal.h>
39 #include <stdlib.h>
40 #include <unistd.h>
41 #include <sys/wait.h>
42 #include <sys/types.h>
43 #include <sys/stat.h>
44 #include <fcntl.h>
45
46 #include "test.h"
47
48 #define FAILED 0
49 #define PASSED 1
50
51 int local_flag = PASSED;
52
53 char *TCID = "rename14";
54 int TST_TOTAL = 1;
55
56 #define RUNTIME 5
57
58 int kidpid[2];
59 int parent_pid;
60
61 int term(void);
62 int al(void);
63 void dochild1(void);
64 void dochild2(void);
65
main(int argc,char * argv[])66 int main(int argc, char *argv[])
67 {
68 int pid;
69 sigset_t set;
70 struct sigaction act, oact;
71
72 tst_parse_opts(argc, argv, NULL, NULL);
73
74 sigemptyset(&set);
75 act.sa_handler = (void (*)())term;
76 act.sa_mask = set;
77 act.sa_flags = 0;
78 if (sigaction(SIGTERM, &act, &oact)) {
79 tst_brkm(TBROK, NULL, "Sigaction(SIGTERM)");
80 }
81
82 sigemptyset(&set);
83 act.sa_handler = (void (*)())al;
84 act.sa_mask = set;
85 act.sa_flags = 0;
86 if (sigaction(SIGALRM, &act, 0)) {
87 tst_brkm(TBROK, NULL, "Sigaction(SIGALRM)");
88 }
89 parent_pid = getpid();
90 tst_tmpdir();
91
92 pid = FORK_OR_VFORK();
93 if (pid < 0)
94 tst_brkm(TBROK, NULL, "fork() returned %d", pid);
95 if (pid == 0)
96 dochild1();
97
98 kidpid[0] = pid;
99 pid = FORK_OR_VFORK();
100 if (pid < 0) {
101 (void)kill(kidpid[0], SIGTERM);
102 (void)unlink("./rename14");
103 tst_brkm(TBROK, NULL, "fork() returned %d", pid);
104 }
105 if (pid == 0)
106 dochild2();
107
108 kidpid[1] = pid;
109
110 alarm(RUNTIME);
111
112 /* Collect child processes. */
113 /* Wait for timeout */
114 pause();
115
116 kill(kidpid[0], SIGTERM);
117 kill(kidpid[1], SIGTERM);
118
119 waitpid(kidpid[0], NULL, 0);
120 waitpid(kidpid[1], NULL, 0);
121
122 unlink("./rename14");
123 unlink("./rename14xyz");
124 (local_flag == PASSED) ? tst_resm(TPASS, "Test Passed")
125 : tst_resm(TFAIL, "Test Failed");
126
127 tst_rmdir();
128 tst_exit();
129 }
130
term(void)131 int term(void)
132 {
133 if (parent_pid != getpid())
134 exit(0);
135 if (kidpid[0])
136 return (kill(kidpid[0], SIGTERM));
137 if (kidpid[1])
138 return (kill(kidpid[1], SIGTERM));
139 return 0;
140 }
141
al(void)142 int al(void)
143 {
144 if (kidpid[0])
145 return (kill(kidpid[0], SIGTERM));
146 if (kidpid[1])
147 return (kill(kidpid[1], SIGTERM));
148 return 0;
149 }
150
dochild1(void)151 void dochild1(void)
152 {
153 int fd;
154
155 for (;;) {
156 fd = creat("./rename14", 0666);
157 unlink("./rename14");
158 close(fd);
159 }
160 }
161
dochild2(void)162 void dochild2(void)
163 {
164 for (;;)
165 rename("./rename14", "./rename14xyz");
166 }
167