Date: Wed, 15 Mar 2006 17:42:38 +0000 From: Brian Candler <B.Candler@pobox.com> To: freebsd-stable@freebsd.org Subject: Strangeness with /dev nodes and mknod Message-ID: <20060315174238.GA60143@uk.tiscali.com>
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I have a box running 6.0-STABLE as of 10 Nov last year. Previously I had created device nodes for /dev/random within chroot environments (this was for building and testing openssl). However now they don't work. I am left with the strange situation that device nodes from devfs work, but seemingly indentical device nodes created with mknod don't. # dd if=/dev/random bs=1 count=8 | hexdump 8+0 records in 8+0 records out 8 bytes transferred in 0.000070 secs (114131 bytes/sec) 0000000 6eaf 1d71 513b 8d8c 0000008 # mknod /tmp/test1 c 0 24 root:wheel # mknod /tmp/test2 c 24 0 root:wheel # chmod 666 /tmp/test1 /tmp/test2 # ls -l /tmp/test1 /tmp/test2 crw-rw-rw- 1 root wheel 0, 24 Mar 15 17:45 /tmp/test1 crw-rw-rw- 1 root wheel 24, 0 Mar 15 17:45 /tmp/test2 # dd if=/tmp/test1 bs=1 count=8 | hexdump dd: /tmp/test1: Operation not supported # dd if=/tmp/test2 bs=1 count=8 | hexdump dd: /tmp/test2: Operation not supported Why do my lovingly hand-created device nodes fail with "Operation not supported"? Thanks, Brian.
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