1 /* test whether fcntl locking works on this system */
3 #if defined(HAVE_UNISTD_H)
15 #ifdef HAVE_SYS_FCNTL_H
16 #include <sys/fcntl.h>
19 #ifdef HAVE_SYS_WAIT_H
25 static int sys_waitpid(pid_t pid,int *status,int options)
28 return waitpid(pid,status,options);
29 #else /* USE_WAITPID */
30 return wait4(pid, status, options, NULL);
31 #endif /* USE_WAITPID */
34 #define DATA "conftest.fcntl"
40 /* lock a byte range in a open file */
41 int main(int argc, char *argv[])
44 int fd, ret, status=1;
48 testdir = getenv("TESTDIR");
49 if (testdir) chdir(testdir);
55 fd = open(DATA, O_RDONLY);
58 fprintf(stderr,"ERROR: failed to open %s (errno=%d)\n",
63 lock.l_type = F_WRLCK;
64 lock.l_whence = SEEK_SET;
65 lock.l_start = 0x100000000LL;
67 lock.l_pid = getpid();
69 lock.l_type = F_WRLCK;
71 /* check if a lock applies */
72 ret = fcntl(fd,F_GETLK,&lock);
75 (lock.l_type == F_UNLCK)) {
76 fprintf(stderr,"ERROR: lock test failed (ret=%d errno=%d)\n", ret, (int)errno);
84 fd = open(DATA, O_RDWR|O_CREAT|O_EXCL, 0600);
87 fprintf(stderr,"ERROR: failed to open %s (errno=%d)\n",
92 lock.l_type = F_WRLCK;
93 lock.l_whence = SEEK_SET;
95 lock.l_len = 0x100000004LL;
96 lock.l_pid = getpid();
98 /* set a 100000004 byte write lock, should conflict with the above */
99 ret = fcntl(fd,F_SETLK,&lock);
101 sys_waitpid(pid, &status, 0);
106 fprintf(stderr,"ERROR: failed to lock %s (errno=%d)\n",
111 if (lock.l_len < 0x100000004LL) {
112 fprintf(stderr,"ERROR: settign lock overflowed\n");
116 #if defined(WIFEXITED) && defined(WEXITSTATUS)
117 if(WIFEXITED(status)) {
118 status = WEXITSTATUS(status);
122 #else /* defined(WIFEXITED) && defined(WEXITSTATUS) */
123 status = (status == 0) ? 0 : 1;
124 #endif /* defined(WIFEXITED) && defined(WEXITSTATUS) */
127 fprintf(stderr,"ERROR: lock test failed with status=%d\n",