[PATCH] Documentation/binfmt-misc.rst: Specify aux vector for "O" flag description

Charlie Jenkins
2026-04-18T21:09:02Z

Instead of replacing the file path in the argument vector, the file
descriptor is passed as AT_EXECFD in the auxilary vector. This appears
to have been the case at least since the git port, update the
documentation to reflect this.

Signed-off-by: Charlie Jenkins <thecharlesjenkins@gmail.com>
---
Documentation/admin-guide/binfmt-misc.rst | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Documentation/admin-guide/binfmt-misc.rst b/Documentation/admin-guide/binfmt-misc.rst
index 59cd902e3549..c0a34fbf8022 100644
--- a/Documentation/admin-guide/binfmt-misc.rst
+++ b/Documentation/admin-guide/binfmt-misc.rst
@@ -68,10 +68,10 @@ Here is what the fields mean:
Legacy behavior of binfmt_misc is to pass the full path
of the binary to the interpreter as an argument. When this flag is
included, binfmt_misc will open the file for reading and pass its
- descriptor as an argument, instead of the full path, thus allowing
- the interpreter to execute non-readable binaries. This feature
- should be used with care - the interpreter has to be trusted not to
- emit the contents of the non-readable binary.
+ descriptor into the auxilary vector with the key "AT_EXECFD", thus
+ allowing the interpreter to execute non-readable binaries. This
+ feature should be used with care - the interpreter has to be trusted
+ not to emit the contents of the non-readable binary.
``C`` - credentials
Currently, the behavior of binfmt_misc is to calculate
the credentials and security token of the new process according to

---
base-commit: 028ef9c96e96197026887c0f092424679298aae8
change-id: ${change-id}

- Charlie