2 * Copyright (c) 2000, 2006 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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41 #include <sys/types.h>
52 * tries to trigger a case where nnpfs believes it has blocks beyond
53 * eof on a newly truncated file, which causes arlad to be surprised
54 * about the length of the subsequent write.
56 * Fixed in nnpfs/bsd/nnpfs_message.c: 1.99.4.16.
60 create_and_write(char *name
, const char *buf
, int len
)
63 fd
= open(name
, O_WRONLY
|O_CREAT
|O_TRUNC
, 0666);
66 ret
= write(fd
, buf
, len
);
75 write_and_truncate(char *name
, const char *buf
, int len
)
78 fd
= open(name
, O_WRONLY
);
81 ret
= write(fd
, buf
, len
);
84 ret
= ftruncate(fd
, 0);
93 main(int argc
, char **argv
)
96 int size
= 260*1024; /* keep it larger than block size */
97 char *buf
= malloc(size
);
101 memset(buf
, 'c', size
);
103 create_and_write("foo", buf
, size
);
104 create_and_write("foo", buf
, size
);
106 write_and_truncate("foo", buf
, size
);
107 write_and_truncate("foo", buf
, size
);