src/bin/sh/exec.c, branch stable/14

Remove $FreeBSD$: one-line .c pattern

2023-08-16T17:54:42Z

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

sh: Add -o verify to use O_VERIFY when sourcing scripts

2021-09-23T08:43:09Z

Add -o verify to sh to make it use O_VERIFY when sourcing scripts and reading profiles. Useful in conjunction with mac_veriexec to help protect at least some parts of the boot sequence, e.g., /etc/rc*. Differential revision: https://reviews.freebsd.org/D30464 Reviewed by: jilles, sjg Obtained from: Stormshield

sh: Write absolute path in command -vV and type

2020-09-01T13:19:15Z

POSIX is pretty clear that command -v, command -V and type shall write absolute pathnames. Therefore, we need to prepend the current directory's name to relative pathnames. This can happen either when PATH contains a relative pathname or when the operand contains a slash but is not an absolute pathname.

sh: Allow more scripts without #!

2020-05-30T16:00:49Z

Austin Group bugs #1226 and #1250 changed the requirements for shell scripts without #! (POSIX does not specify #!; this is about the shell execution when execve(2) returns an [ENOEXEC] error). POSIX says we shall allow execution if the initial part intended to be parsed by the shell consists of characters and does not contain the NUL character. This allows concatenating a shell script (ending with exec or exit) and a binary payload. In order to reject common binary files such as PNG images, check that there is a lowercase letter or expansion before the last newline before the NUL character, in addition to the check for the newline character suggested by POSIX.

sh: Unify EXERROR and EXEXEC

2018-11-09T14:58:24Z

The difference between EXERROR and EXEXEC was that EXEXEC passed along exitstatus and EXERROR set exitstatus to 2 in the handling code. By changing the places that raised EXERROR to set exitstatus to 2, the handling of EXERROR and EXEXEC becomes the same.

sh: Use exitstatus instead of exerrno to pass EXEXEC status

2018-10-27T20:17:57Z

No functional change is intended.

sh: Don't treat % specially in CDPATH

2018-07-15T21:55:17Z

sh: Update TOUR and comments for some code changes, some of them old.

2017-05-06T13:28:42Z

Also, improve some terminology in TOUR and comments.

Renumber copyright clause 4

2017-02-28T23:42:47Z

Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96

sh: Fix copying uninitialized field 'special'.

2016-03-13T22:54:14Z

This just copied uninitialized data and did not depend on it later, so it should not be dangerous. Found by: clang static analyzer