Hi,
I was wondering, how I can tell a file is a regular file ("-" when
you run ls -l) or a socket ("s" when you run ls -l). I think I can use
sockfd_lookup on the fd to check if a fd points to a socket (NULL if
it doesn't).
But I see these macros in stat.h (S_ISREG, S_ISSOCK) that takes an
inode's umode and returns true if the inode is a specific file type.
But I was wondering, if I use fget() to get the file of a fd, can I
get the inode from the file from f_inode? I see the comment says it is
a cached value. So what would go wrong if I went something like
S_ISREG(file->f_inode) or is this the correct way to do this?
Peter
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