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libcontainer/SPEC.md: fix /dev/stdio symlinks 

The spec uses symlinks to "/proc/1/..." but the implementation uses
"/proc/self/...": see setupDevSymlinks (libcontainer/rootfs_linux.go).

The implementation is more correct, so I'm changing the spec to match
the implementation.

Signed-off-by: Alban Crequy <alban.crequy@coreos.com>
This commit is contained in:
Alban Crequy 2015-10-16 13:22:53 +02:00
parent 3be7f87b1b
commit f381717120
1 changed files with 6 additions and 6 deletions
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12
libcontainer/SPEC.md
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@ -97,12 +97,12 @@ that is local to the container's rootfs.
After the container has `/proc` mounted a few standard symlinks are setup
within `/dev/` for the io.
| Source | Destination |
| ------------ | ----------- |
| /proc/1/fd | /dev/fd |
| /proc/1/fd/0 | /dev/stdin |
| /proc/1/fd/1 | /dev/stdout |
| /proc/1/fd/2 | /dev/stderr |
| Source | Destination |
| --------------- | ----------- |
| /proc/self/fd | /dev/fd |
| /proc/self/fd/0 | /dev/stdin |
| /proc/self/fd/1 | /dev/stdout |
| /proc/self/fd/2 | /dev/stderr |
A `pivot_root` is used to change the root for the process, effectively
jailing the process inside the rootfs.