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Re: UID|EUID variables lose their ro properties
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From: |
Chet Ramey |
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Subject: |
Re: UID|EUID variables lose their ro properties |
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Date: |
Fri, 3 Nov 2017 15:13:11 -0400 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
On 11/3/17 12:09 PM, mike b wrote:
> Bash Version: 4.4
> Patch Level: 12
> Release Status: release
>
> Description:
> Whenever UID|EUID are exported to the env of newly exec Bash
> instance said variables lose their ro properties. Here's example:
Two reasons: you can't pass variable attributes through the environment;
and bash doesn't overwrite EUID or UID if a shell instance inherits them
via the environment. This is the general case; PPID is a rare exception.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/