Jan Engelhardt:
> >> 12:40 shanghai:/home/jengelh # mount lo:/home/Video /mnt -t nfs
> >> 12:40 shanghai:/home/jengelh # cd /mnt/
> >> 12:40 shanghai:/mnt # touch it
> >> touch: cannot touch `it': Read-only file system
:::
> >Can you "touch it" on nfs server locally?
>
> Well yes :)
I have tried on linux-2.6.13.2, and got EACCES from open(2).
But I tried as superuser and got EROFS from utime(2).
----------------------------------------------------------------------
jroun:~$ grep /ext2 /etc/exports
/ext2 xxx.xxx.xxx.xxx(ro,async,no_root_squash)
jroun:~$ sudo mount jroun:/ext2 /mnt
jroun:~$ strace -e trace=file touch /mnt/file
:::
open("/mnt/file", O_WRONLY|O_NONBLOCK|O_CREAT|O_NOCTTY|O_LARGEFILE, 0666) = -1
EACCES (Permission denied)
utime("/mnt/file", NULL) = -1 ENOENT (No such file or directory)
touch: cannot touch `/mnt/file': Permission denied
jroun:~$ sudo strace -e trace=file touch /mnt/file
:::
open("/mnt/file", O_WRONLY|O_NONBLOCK|O_CREAT|O_NOCTTY|O_LARGEFILE, 0666) = -1
EACCES (Permission denied)
utime("/mnt/file", NULL) = -1 EROFS (Read-only file system)
touch: cannot touch `/mnt/file': Permission denied
----------------------------------------------------------------------
I guess your open(2) acts like what I wrote.
You might be confused by your touch command's error message.
$ touch --version
touch (coreutils) 5.2.1
Junjiro Okajima
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