Michal Schmidt writes:
On 07/18/2012 12:35 AM, Sam Varshavchik wrote:Really? An example of a "symbolic link pointing to a non-existent pathname"? lrwxrwxrwx. 1 root root 15 Jul 17 18:02 /dev/stderr → /proc/self/fd/2 lrwxrwxrwx. 1 root root 15 Jul 17 18:02 /dev/stdin → /proc/self/fd/0 lrwxrwxrwx. 1 root root 15 Jul 17 18:02 /dev/stdout → /proc/self/fd/1 You mean to tell me that none of those symlinks exist? Could've fooled me:Cut the sarcasm. In your example they existed, but generally they do not have to. Try this: $ while :; do echo hello; sleep 10; done > /tmp/dumbdumbdumb & [1] 32595 $ rm /tmp/dumbdumbdumb $ readlink /proc/32595/fd/1 /tmp/dumbdumbdumb (deleted) $ cat /proc/32595/fd/1 hello helloSee? We have an actual magical symlink that points to a non-existing path and yet it can still be opened.
Ok. I was wondering if there was any other case similar to /proc/pid/exe where you have a symlink from /proc pointing to a non-existent file, yet still can be opened.
You said yes, and you offered a different symlink from /proc pointing to a non-existent file, as an example.
Ok, so we've established that /proc symlinks have the ability to do that. Great. Now, anything else?
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