[Bug 269738] /rescue/pgrep does not work

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 21 Feb 2023 15:35:21 UTC

            Bug ID: 269738
           Summary: /rescue/pgrep does not work
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: stephen.wall@redcom.com

/rescue/pgrep fails to recognize the -q option.  When run without any options,
it prints the usage message for pkill.

Debugging with lldb shows that the call to getprogname() is actually calling
getexecname() from sys/contrib/openzfs/lib/libspl/os/freebsd/getexecname.c,
which does not trim the leading path from the executable name, resulting in "if
(strcmp(_getprogname(), "pgrep") == 0) {" not matching, and the executable
behaving as pkill instead of pgrep.

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