From 2bef526331a194da199993ec747598f625a5a9a8 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Fri, 16 Dec 2011 00:25:17 +0100 Subject: [PATCH] ash: add comment about bash's ENOEXEC handling. No code changes Signed-off-by: Denys Vlasenko --- shell/ash.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/shell/ash.c b/shell/ash.c index 14472cb61..d02b74a4c 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -7435,6 +7435,12 @@ tryexec(IF_FEATURE_SH_STANDALONE(int applet_no,) char *cmd, char **argv, char ** * * That is, do not use $SHELL, user's shell, or /bin/sh; * just call ourselves. + * + * Note that bash reads ~80 chars of the file, and if it sees + * a zero byte before it sees newline, it doesn't try to + * interpret it, but fails with "cannot execute binary file" + * message. For one, it prevents atempts to interpret + * foreign ELF binaries as shell scripts. */ char **ap; char **new; -- 2.25.1