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Diffstat (limited to 'Documentation/binfmt_misc.txt')
| -rw-r--r-- | Documentation/binfmt_misc.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/binfmt_misc.txt b/Documentation/binfmt_misc.txt index 6b1de7058..ec83bbce5 100644 --- a/Documentation/binfmt_misc.txt +++ b/Documentation/binfmt_misc.txt @@ -66,6 +66,13 @@ Here is what the fields mean: This feature should be used with care as the interpreter will run with root permissions when a setuid binary owned by root is run with binfmt_misc. + 'F' - fix binary. The usual behaviour of binfmt_misc is to spawn the + binary lazily when the misc format file is invoked. However, + this doesn't work very well in the face of mount namespaces and + changeroots, so the F mode opens the binary as soon as the + emulation is installed and uses the opened image to spawn the + emulator, meaning it is always available once installed, + regardless of how the environment changes. There are some restrictions: |