linux-ext4 - [Bug 29212] noexec on file level (acl)

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Date:	Wed, 16 Feb 2011 18:20:42 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 29212] noexec on file level (acl)

https://bugzilla.kernel.org/show_bug.cgi?id=29212





--- Comment #3 from krzf83@...il.com  2011-02-16 18:20:41 ---
denying executing code has little to do with filesystem. Noexec was implemented
as mount flag so there is no problem of specifing more precice paths to
dissalow exec-ing - laziness

fs/open.c


        if ((mode & MAY_EXEC) && S_ISREG(inode->i_mode)) {
                /*
                 * MAY_EXEC on regular files is denied if the fs is mounted
                 * with the "noexec" flag.
                 */
                res = -EACCES;
                if (path.mnt->mnt_flags & MNT_NOEXEC)
                        goto out_path_release;
        }

if there were next if but with checking against list of paths in a file (if not
xattr) instead of MNT_NOEXEC. I'm not good in c so I have no way of programing
this stuff any time soon.

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