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Date:      Wed, 03 Nov 2021 10:40:42 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 259625] fexecve interacts incorrectly with interpreters
Message-ID:  <bug-259625-227-JQC2VfkXn2@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-259625-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-259625-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D259625

Drew DeVault <sir@cmpwn.com> changed:

           What    |Removed                     |Added
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 Attachment #229240|text/x-log                  |text/plain
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--- Comment #2 from Drew DeVault <sir@cmpwn.com> ---
Created attachment 229240
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D229240&action=
=3Dedit
truss log reproducing the error

(In reply to Konstantin Belousov from comment #1)
I attached my own truss log. The only difference I see is the expected one:
openat fails.

I used truss -f ./a.out 2>log to obtain this file, which shows the two pids=
 in
the output. I noticed these are missing from yours: how did you obtain your
truss log? Note that simply running ./test.sh works fine as expected.

Additional notes:

Updating the interpreter to #!/bin/ls -l gives the following:

cr-xr-xr-x  1 root  wheel  0x6 Nov  3 11:34 /dev/fd/3

So, the file (1) exists, and (2) is readable, so the EACCESS doesn't make
sense.

Using #!/bin/cat gives the same error as #!/bin/sh.

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