diff options
| author | Christian Brauner <brauner@kernel.org> | 2026-07-21 16:13:54 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-08-03 10:08:46 +0200 |
| commit | 21e04378e0b1b2a9bdf34f2458d4950716b14b2e (patch) | |
| tree | 4d2593181d2bf2b86bdbac58739fae21eab81bb4 /include/linux/binfmt_misc.h | |
| parent | 75e536852f9a5f1880091d58f46cdf2fce2101b4 (diff) | |
binfmt_misc: let a bpf handler run the interpreter transparently
Expose transparent mode 'T' to the bpf handler via a new
BPF_BINPRM_TRANSPARENT flag. A bpf handler can decide per binary whether
the dispatch is transparent. This way users may choose a native-looking
loader for one binary and a visible wrapper invocation for the next.
Link: https://patch.msgid.link/20260721-work-bpf-binfmt_misc-ptinterp-v2-12-e57866e4ae0f@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Diffstat (limited to 'include/linux/binfmt_misc.h')
| -rw-r--r-- | include/linux/binfmt_misc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/binfmt_misc.h b/include/linux/binfmt_misc.h index d3112a00cc19..26da749391b4 100644 --- a/include/linux/binfmt_misc.h +++ b/include/linux/binfmt_misc.h @@ -16,6 +16,9 @@ struct user_namespace; * @BPF_BINPRM_CREDENTIALS: compute credentials from the binary; implies execfd * (like the 'C' flag) * @BPF_BINPRM_EXECFD: pass the binary via AT_EXECFD (like the 'O' flag) + * @BPF_BINPRM_TRANSPARENT: leave argv untouched, the interpreter takes the + * binary from AT_EXECFD (like the 'T' flag); implies + * execfd, excludes preserve-argv0 * * Set from a load program with bpf_binprm_set_flags(). Unlike a static entry, * a bpf handler chooses these per exec rather than once at registration. @@ -24,6 +27,7 @@ enum bpf_binprm_flags { BPF_BINPRM_PRESERVE_ARGV0 = (1ULL << 0), BPF_BINPRM_CREDENTIALS = (1ULL << 1), BPF_BINPRM_EXECFD = (1ULL << 2), + BPF_BINPRM_TRANSPARENT = (1ULL << 3), }; /** |