Yes
> You could royally screw up your file system with the ln command as
> root, I don't even recall if ln checked for directories or if you had
> to add a flag to force it.
I don't think that's true... ln(1) doesn't seem to touch directories, nor
does there seem to be an obvious flag (nor is one documented in the man
page). UID 0 could call link(2) on a directory, though:
# mkdir a
# ls -ld a
drwxrwxr-x 2 root other 32 Dec 25 00:59 a
# ln a b
ln: a is a directory
# echo 'main() { link("a","b"); } ' > l.c
# cc l.c -o l
# ./l
# ls -ld a b
drwxrwxr-x 3 root other 32 Dec 25 01:05 a
drwxrwxr-x 3 root other 32 Dec 25 01:05 b
# ls -lia a b
a:
total 2
541 drwxrwxr-x 3 root other 32 Dec 25 01:05 .
276 drwxrwxrwx 3 bin bin 240 Dec 25 01:06 ..
b:
total 2
541 drwxrwxr-x 3 root other 32 Dec 25 01:05 .
276 drwxrwxrwx 3 bin bin 240 Dec 25 01:06 ..
-Mitch
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/