dtruss and statsnoop are broken on FreeBSD 12

[seschwar]

Trying to execute dtruss or statsnoop immediately leads to errors on FreeBSD 12:

# dtruss true
dtrace: invalid probe specifier 
(...)
: probe description syscall::lstat*:return does not match any probes
# statsnoop
dtrace: invalid probe specifier 
(...)
: probe description syscall::stat:entry does not match any probes

Some version information:

$ uname -a
FreeBSD epiphron 12.0-RELEASE FreeBSD 12.0-RELEASE r341666 GENERIC  amd64
$ freebsd-version
12.0-RELEASE-p1
$ pkg query %v dtrace-toolkit
1.0_4

[grahamperrin]

From https://www.freshports.org/sysutils/dtrace-toolkit/#message:

Many of the DTraceToolkit scripts will not work as they are either too Solaris-specific or use probes which are unsupported at this time on FreeBSD.

[grahamperrin]

Similarly (FreeBSD 14.0-CURRENT),

root@mowa219-gjp4-8570p-freebsd:~ # sudo /usr/local/share/dtrace-toolkit/Bin/bitesize.d
dtrace: failed to compile script /usr/local/share/dtrace-toolkit/Bin/bitesize.d: line 1: b_bcount is not a member of struct bio
root@mowa219-gjp4-8570p-freebsd:~ # sudo /usr/local/share/dtrace-toolkit/Disk/bitesize.d
dtrace: failed to compile script /usr/local/share/dtrace-toolkit/Disk/bitesize.d: line 1: b_bcount is not a member of struct bio
root@mowa219-gjp4-8570p-freebsd:~ #