Date: Sun, 7 Mar 2010 10:43:45 +0000 (UTC) From: Ed Schouten <ed@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/compat/linprocfs linprocfs.c Message-ID: <201003071044.o27Ai8jn049985@repoman.freebsd.org>
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ed 2010-03-07 10:43:45 UTC
FreeBSD src repository
Modified files:
sys/compat/linprocfs linprocfs.c
Log:
SVN rev 204825 on 2010-03-07 10:43:45Z by ed
Make /proc/self/fd `work'.
On Linux, /proc/<pid>/fd is comparable to fdescfs, where it allows you
to inspect the file descriptors used by each process. Glibc's ttyname()
works by performing a readlink() on these nodes, since all nodes in this
directory are symlinks.
It is a bit hard to implement this in linprocfs right now, so I am not
going to bother. Add a way to make ttyname(3) work, by adding a
/proc/<pid>/fd symlink, which points to /dev/fd only if the calling
process matches. When fdescfs is mounted, this will cause the
readlink() in ttyname() to fail, causing it to fall back on manually
finding a matching node in /dev.
Discussed on: emulation@
Revision Changes Path
1.144 +16 -0 src/sys/compat/linprocfs/linprocfs.c
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