[PATCH] man/man2/clone.2: Document E2BIG-based extension handshake
From: Florian Weimer <hidden>
Date: 2025-12-15 10:34:38
Subsystem:
the rest · Maintainer:
Linus Torvalds
The clone3 system call uses copy_struct_from_user and the E2BIG error code to handle changes to the struct clone_args size. Signed-off-by: Florian Weimer <redacted> --- man/man2/clone.2 | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/man/man2/clone.2 b/man/man2/clone.2
index 74c5a59be..1d62a5df1 100644
--- a/man/man2/clone.2
+++ b/man/man2/clone.2@@ -1188,6 +1188,16 @@ in the caller's context, no child process is created, and is set to indicate the error. .SH ERRORS .TP +.BR E2BIG " (" clone3 "() only)" +The kernel does not support some functionality requested in this +.BR clone3 () +call: +The size argument is larger than what the kernel supports, +and there are non-zero values in the struct after the kernel-supported size. +.TP +.BR E2BIG " (" clone3 "() only)" +The size argument is larger than the page size. +.TP .BR EACCES " (" clone3 "() only)" .B CLONE_INTO_CGROUP was specified in
base-commit: 46950a0845de91c422efe6c639091ace42cb92f8