src/lib/libproc/proc_create.c, branch release/14.4.0

Remove $FreeBSD$: one-line .c pattern

2023-08-16T17:54:42Z

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

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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

Use a global extern declaration to appease gcc.

2017-12-06T17:52:01Z

Reported by: gjb X-MFC with: r326498

Add an envp argument to proc_create().

2017-12-03T16:50:16Z

This is needed to support dtrace's -x setenv option. MFC after: 2 weeks

lib: further adoption of SPDX licensing ID tags.

2017-11-26T02:00:33Z

Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.

Add initializations missed in r315728.

2017-03-22T18:33:29Z

X-MFC With: r315728

Avoid accessing an uninitialized variable when vfork() fails.

2017-03-22T18:31:44Z

Reported by: Miles Ohlrich MFC after: 1 week Sponsored by: Dell EMC Isilon

libproc: Add support for some proc_attach() flags.

2016-12-06T04:22:38Z

This change adds some handling for the equivalent of Solaris' PGRAB_* flags. In particular, support for PGRAB_RDONLY is needed to avoid a nasty deadlock: dtrace(1) may otherwise stop the master process for its pseudo-terminal and end up blocking while writing to standard output.

libproc: Cache symbol tables for mapped objects upon access.

2016-12-06T04:21:35Z

Extend the file handle cache entries to include symbol tables as well. An index is used to implement binary search by symbol value. Lookups by name are comparatively rare and are thus still implemented with a linear search, but support for a binary search by name would be straightforward to add if needed.

libproc: Cache ELF handles for loaded objects.

2016-12-06T04:19:08Z

libproc previously created a new handle for each symbol lookup, which gives rather egregious performance for DTrace's ustack() action. With this change libproc will cache the libelf descriptor upon access, making lookups much faster in the common case.