ash: command -v CMD must skip (go to next path) when CMD exists, but is not executable

Upstream commit:

    Date: Fri, 5 Apr 2024 17:55:46 +0800
    exec: Check executable bit when searching path

    Andrej Shadura <andrew.shadura@collabora.co.uk> wrote:
    ...
    > https://bugs.debian.org/874264
    > -------- Forwarded Message --------
    > Subject: dash: 'command -v' mistakenly returns a shell script whose
    > executable is not set
    > Date: Mon, 04 Sep 2017 10:45:48 -0400
    > From: Norman Ramsey <nr@cs.tufts.edu>
    > To: Debian Bug Tracking System <submit@bugs.debian.org>
    ...
    > I tracked a build bug in s-nail to a problem with dash.  Symptom:
    > building s-nail tries to run /home/nr/bin/clang, a script whose
    > executable bit is not set.  We tracked the problem to the result of
    > running `command -v clang` with /bin/sh:
    ...
    This is inherited from NetBSD.  There is even a commented-out
    block of code that tried to fix this.

    Anyway, we now have faccessat so we can simply use it.

function                                             old     new   delta
test_exec                                              -     125    +125
find_command                                         911     918      +7
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 132/0)             Total: 132 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

0 files changed, 0 insertions, 0 deletions