1 /* test whether 64 bit fcntl locking really 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.fcntl64"
36 /* lock a byte range in a open file */
37 int main(int argc, char *argv[])
40 int fd, ret, status=1;
45 fd = open64(DATA, O_RDONLY);
47 if (fd == -1) return 1;
49 lock.l_type = F_WRLCK;
50 lock.l_whence = SEEK_SET;
53 lock.l_pid = getpid();
55 lock.l_type = F_WRLCK;
57 /* check if a lock applies */
58 ret = fcntl(fd,F_GETLK64,&lock);
61 (lock.l_type == F_UNLCK)) {
62 /* printf("No lock conflict\n"); */
65 /* printf("lock conflict\n"); */
70 fd = open64(DATA, O_RDWR|O_CREAT|O_TRUNC, 0600);
72 lock.l_type = F_WRLCK;
73 lock.l_whence = SEEK_SET;
74 #if defined(COMPILER_SUPPORTS_LL)
75 lock.l_start = 0x100000000LL;
77 lock.l_start = 0x100000000;
80 lock.l_pid = getpid();
82 /* set a 4 byte write lock */
83 fcntl(fd,F_SETLK64,&lock);
85 sys_waitpid(pid, &status, 0);
87 #if defined(WIFEXITED) && defined(WEXITSTATUS)
88 if(WIFEXITED(status)) {
89 status = WEXITSTATUS(status);
93 #else /* defined(WIFEXITED) && defined(WEXITSTATUS) */
94 status = (status == 0) ? 0 : 1;
95 #endif /* defined(WIFEXITED) && defined(WEXITSTATUS) */