[Bug 244962] emulators/virtualbox-ose-additions mount -t vboxsf Operation not supported by device

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244962

--- Comment #3 from groenveld at acm.org ---
The kernel does not offer bcmp:
$ nm /boot/kernel/kernel|grep -i bcmp
ffffffff80cb4610 T timingsafe_bcmp

The port links vboxvfs.ko with a library that references bcmp
$ cat
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs.dep
define vboxvfs_CMDS_PREV_

@kmk_builtin_rm -f --
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs.dep
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs.ko

/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs.map
ld               -d --warn-common   -m elf_x86_64_fbsd   -r -o 
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs.ko
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs_vfsops.o
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs_vnops.o
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs_prov.o
  
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/lib/additions/VBoxGuestR0Lib.a
 
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/lib/additions/RuntimeGuestR0.a
awk -f /usr/src/sys/conf/kmod_syms.awk 
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs.ko
/dev/null | xargs -J% objcopy %
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/obj/vboxvfs/vboxvfs.ko
endef
$ nm
/usr/ports/emulators/virtualbox-ose-additions/work/VirtualBox-5.2.34/out/freebsd.amd64/release/lib/additions/RuntimeGuestR0.a
| grep -B13 bcmp
strformatrt.o:
                 U VBoxGuest_RTStrFormat
                 U VBoxGuest_RTStrFormatNumber
0000000000000000 r _ZL13g_szHexDigits
0000000000002060 t _ZL15rtstrFormatIPv6PFmPvPKcmES_PK10RTUINT128U
0000000000000000 r _ZZ13rtstrFormatRtE12s_wszBigNull
0000000000000280 r _ZZ13rtstrFormatRtE8s_aTypes
0000000000000870 r _ZZ13rtstrFormatRtE8s_aTypes_0
0000000000000850 r _ZZ13rtstrFormatRtE8s_szNull
0000000000000857 r _ZZ13rtstrFormatRtE8s_szTrue
000000000000085d r _ZZ13rtstrFormatRtE9s_szFalse
                 U __start_set_pcpu
                 U __stop_set_pcpu
                 U bcmp

Someone with an understanding of FreeBSD kernel modules will have to explain
where things went sideways.
John
groenveld at acm.org

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