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
;
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
;
96 lock
.l_pid
= getpid();
98 /* set a 4 byte write lock */
99 fcntl(fd
,F_SETLK
,&lock
);
101 sys_waitpid(pid
, &status
, 0);
105 #if defined(WIFEXITED) && defined(WEXITSTATUS)
106 if(WIFEXITED(status
)) {
107 status
= WEXITSTATUS(status
);
111 #else /* defined(WIFEXITED) && defined(WEXITSTATUS) */
112 status
= (status
== 0) ? 0 : 1;
113 #endif /* defined(WIFEXITED) && defined(WEXITSTATUS) */
116 fprintf(stderr
,"ERROR: lock test failed with status=%d\n",