Date: Fri, 28 Jan 2005 15:29:03 +0900 From: takawata@jp.freebsd.org To: freebsd-current@freebsd.org Subject: Cannot cp(1) file from smbfs.(MMAP problem) Message-ID: <200501280629.PAA20868@axe-inc.co.jp>
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Hi, I have problem when try to copy file by cp(1).
When /mnt is smbfs,
% cp /mnt/foo.txt /tmp
will produce
cp: /mnt/foo.txt: Invalid argument
And tracing syscall shows that the error is produced by
mmap(2).
Is it known problem?
FreeBSD tmp.init-main.com 6.0-CURRENT FreeBSD 6.0-CURRENT #59: Wed Jan 26 02:29:16 JST 2005 takawata@sana.init-main.com:/usr/obj/usr/src/sys/LIEUTENANT i386
=========-
> cat /mnt/foo.txt
fugafuga
> cp /mnt/foo.txt .
cp: /mnt/foo.txt: Invalid argument
> cat foo.txt
> ls -l foo.txt
-rwxr-xr-x 1 takawata wheel 0 1 28 15:24 foo.txt
> gcc -o mm mm.c
> ./mm foo.txt
3
0x28158000
> ./mm /mnt/foo.txt
3
0xffffffff
MMAP: Invalid argument
mm: MMAP
> cat mm.c
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/mman.h>
main(int argc, char * argv[])
{
int fd;
void *ptr;
if(argc <= 1){
exit(-1);
}
if((fd = open(argv[1], O_RDONLY))== -1){
errx(-1, "OPEN");
}
printf("%d\n", fd);
ptr = mmap(NULL, 4096, PROT_READ, MAP_PRIVATE, fd, 0);
printf("%p\n", ptr);
if(ptr == MAP_FAILED){
perror("MMAP");
errx(-1, "MMAP");
}
}
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