ec492b4973
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@ |
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