cagney@highland.oz.au wrote:
> 
> Hi,
> 
> The code below doesn't work on NetBSD-current ~2nd May on a x86
> yet works under SunOS 4.1.3. (The call to ftruncate() fails???).
> 
> One thing I did notice but didn't seem to fix the problem (I didn't really
> expect it to :-) is in:
> 
> 	src/lib/libc/sys/ftruncate.c
> 
> it is declared as:
> 
> 	ftruncate(char *path, off_t length)
> 
> instead of:
> 
> 	ftruncate(int fd, off_t length)
> 
> The output I get is:
> 
> 	After open: Undefined error: 0
> 	Open returns 3
> 	After Write: Undefined error: 0
> 	Write returns 6
> 	After ftruncate: Invalid argument
> 	ftruncate returns -1
> 
> 
> any hints? Is it an error and if so has it been fixed?
> 
> 			Andrew
> 
> 
> 
> #include <fcntl.h>
> main()
> {
> 	int fd;
> 	int status;
> 	char *file = "/tmp/foo";
> 	char *data = "123456";
> 	int datalen = strlen(data);
> 
> 	fd = open(file, O_RDWR | O_CREAT, 0600);
> 	perror("After open");
> 	printf("Open returns %d\n", fd);
> 
> 	status = write(fd, data, datalen);
> 	perror("After Write");
> 	printf("Write returns %d\n", status);
> 
> 	status = ftruncate(fd, 6);
> 	perror("After ftruncate");
> 	printf("ftruncate returns %d\n", status);
> 
> 	unlink(file);
> 
> 	exit(0);
> }
> 
> 

/usr/include/fnctl.h doesn't seem to include /usr/include/unistd.h, where is
the prototype for ftruncate.
Perhaps you should add '#include <unistd.h>', or use a cast:
'status = ftruncate(fd, (off_t)6);'



-- 
--
Manuel Bouyer, Ecole Nationale Superieure de Techniques Avancees, Paris
email: bouyer@ensta.fr
--

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