src/usr.bin/elfctl, branch releng/14.2

Add mitigations(7) describing our vulnerability mitigations

2023-10-10T13:34:31Z

This is an initial take on documenting vulnerability mitigations. Connect mitigations(7) to the build Also add some cross references. Reviewed by: gbe (earlier) Sponsored by: The FreeBSD Foundation Co-authored-by: Olivier Certner Differential Revision: https://reviews.freebsd.org/D41794 (cherry picked from commit b6a61ac2d475fba9c45f7f407549a522f60dea18) (cherry picked from commit 6e5dcc6113da649a79e5bc2c3ea9329bcd1d85d5) (cherry picked from commit a2b289608d6b54b6e1ce85096560807e551bb5ac)

Remove $FreeBSD$: two-line nroff pattern

2023-08-16T17:55:10Z

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

Remove $FreeBSD$: one-line sh pattern

2023-08-16T17:55:03Z

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Remove $FreeBSD$: one-line .c pattern

2023-08-16T17:54:42Z

Remove /^[\s*]*__FBSDID$"\$FreeBSD\$"$;?\s*\n/

Mark usage function as __dead2 in programs where it does not return

2023-07-07T16:45:18Z

In most cases, usage does not return, so mark them as __dead2. For the cases where they do return, they have not been marked __dead2. Reviewed by: imp Pull Request: https://github.com/freebsd/freebsd-src/pull/735

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

2023-05-12T16:44:03Z

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix

elfctl: whitespace cleanup

2022-02-15T13:46:14Z

Reported by: jrm (in review D34283)

elfctl: fix operations with multiple features on multiple files

2022-02-15T13:42:17Z

Previously an invocation like elfctl -e +feature1,feature2 file1 file2 would set both feature flags in file 1 but only feature1 in file2 (due to the string being modified by strsep()). Reported by: jrm Tested by: jrm MFC after: 3 days Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D34283

elfctl: fix -e invalid operation error handling

2022-02-15T03:35:03Z

Validate the operation prior to parsing the feature string, so that e.g. -e 0x1 reports invalid operation '0' rather than invalid feature 'x11'. Also make it an error rather than a warning, so that it is not repeated if multiple files are specified. (Previously an invalid operation resulted in a segfault.) MFC after: 3 days Sponsored by: The FreeBSD Foundation

elfctl: error if -e is specified multiple times

2022-02-15T03:08:47Z

Reported by: jrm MFC after: 3 days Sponsored by: The FreeBSD Foundation