Messages in this thread | | | Date | Tue, 21 Aug 2007 07:32:06 +0200 (CEST) | From | Jan Engelhardt <> | Subject | Re: How Linux /proc filesystem convert a fd to the actual pathname? |
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>In the Linux proc filesystem, /proc/[pid]/fd is a link to the >actually the actual pathname of the opened file. > >I am curious how Linux convert an fd to the pathname? Does it >recursively walk back from current dentry to the root?
AFAICS the fd has a pointer to the vma of the file (don't ask me why), which in turn has a 'struct file' pointer, which in turn has the required 'struct dentry' in it.
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