Removing files in devfs
Hello,
Is this behaviour supposed to be?
9:36 root@kiza /dev# l null
crw-rw-rw- 1 root root 1, 3 Jan 1 1970 null
9:36 root@kiza /dev# rm null
removing `null'
9:36 root@kiza /dev# l null
ls: null: No such file or directory
9:36 root@kiza /dev#
I have kernel 2.4.16 with devfs and on every other system I tried I
only get "rm: cannot unlink `null': Operation not permitted" when trying to delete something in devfs. And I cannot see any differences as far as devfs is concerned on the systems I tried. devfs compiled in, mounted on boot time, same version of devfsd.
Regards,
Oliver
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Oliver Feiler [email protected] http://www.lionking.org/~kiza/pgpkey PGP key ID: 0x561D4FD2 http://www.lionking.org/~kiza/
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"oliver" == Oliver Feiler <[email protected]> writes:
oliver> Hello,
oliver> Is this behaviour supposed to be?
oliver> 9:36 root@kiza /dev# l null
oliver> crw-rw-rw- 1 root root 1, 3 Jan 1 1970 null
oliver> 9:36 root@kiza /dev# rm null
oliver> removing `null'
oliver> 9:36 root@kiza /dev# l null
oliver> ls: null: No such file or directory
oliver> 9:36 root@kiza /dev#
oliver> I have kernel 2.4.16 with devfs and on every other system I tried I oliver> only get "rm: cannot unlink `null': Operation not permitted" when trying to oliver> delete something in devfs. And I cannot see any differences as far as devfs is oliver> concerned on the systems I tried. devfs compiled in, mounted on boot time, oliver> same version of devfsd.
oliver> Regards,
oliver> Oliver
Since 2.4.16-preX, you can't remove a {file,symlink} in devfs created by devfs :(
That hit me hardly whith /dev/root. I had to remove the code that generate that link to get my system booting (where system is anything booting with mkinitrd + devfs).
Later, Juan.
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In theory, practice and theory are the same, but in practice they are different -- Larry McVoy
Quoted 12 lines · Oliver Feiler
Hello,
Is this behaviour supposed to be?
9:36 root@kiza /dev# l null
crw-rw-rw- 1 root root 1, 3 Jan 1 1970 null
9:36 root@kiza /dev# rm null
removing `null'
9:36 root@kiza /dev# l null
ls: null: No such file or directory
9:36 root@kiza /dev#
Quoted 6 lines
I have kernel 2.4.16 with devfs and on every other system I
tried I only get "rm: cannot unlink `null': Operation not permitted" when trying to delete something in devfs. And I cannot see any differences as far as devfs is concerned on the systems I tried. devfs compiled in, mounted on boot time, same version of devfsd.
What is "every other system"?
Regards, Richard.... Permanent: [email protected] Current: [email protected]
Quoted 3 lines · Richard Gooch
What is "every other system"?
Sorry, the last mail didn't get a followup to the list... that should
explain it:
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"oliver" == Oliver Feiler <[email protected]> writes:
Quoted 3 lines · oliver> Juan Quintela wrote:
Quoted 3 lines
Since 2.4.16-preX, you can't remove a {file,symlink} in devfs created by devfs :(
oliver> Hmm, that'll be it. Since the other systems I tried were both running oliver> 2.4.17 kernels and I'm with .16 at the moment. Thanks for the hint.
this patch should make the trick (it is a workaround, but it is not trivial to do it an easier way without still more incestuous relations, Wating for Richard to do something to the respect.
Later, Juan.
fs/super.c Fri Jan 4 21:09:45 2002 renamed from fs/super.c.orig Fri Jan 4 21:28:24 2002 +2 -2
@@ -1056,8 +1056,8 @@ putname(fs_names); if (path_start >= 0) { name = path + path_start; - devfs_mk_symlink (NULL, "root", DEVFS_FL_DEFAULT, - name + 5, NULL, NULL); +// devfs_mk_symlink (NULL, "root", DEVFS_FL_DEFAULT, +// name + 5, NULL, NULL); memcpy (name, "/dev/", 5); } vfsmnt = alloc_vfsmnt();
----end forward----
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Oliver Feiler [email protected] http://www.lionking.org/~kiza/pgpkey PGP key ID: 0x561D4FD2 http://www.lionking.org/~kiza/