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Operating Systems BSD Vbox - FreeBSD - get data from pendrive? Post 303046325 by sea on Thursday 30th of April 2020 11:22:16 PM
Old 05-01-2020
Vbox - FreeBSD - get data from pendrive?

Heyas

I'm trying to test SWARM in a Vbox-FreeBSD environment.
  • I had prepared an ISO of my USB pendrive that just contains SWARM.
  • I'm using the FreeBSD image from my host's harddrive.
  • Both images are connected/assigned in VBox under mass-storages -> CDROM and USB.
  • Since I dont want to install anything, I did not 'assign' a VDI for the FreeBSD-Vbox.
Vbox - FreeBSD - get data from pendrive?-freebsd-vbox-settingsjpg


So, I booted FreeBSD login in as root... and am getting lost there...
Now I do know how to mount stuff in linux, I know my ways around...
However, with FreeBSD... I am getting lost..

I tried to follow:
Mounting USB Flash Drive | The FreeBSD Forums

But the issue is, I do not have any entries they refer to... (no /dev/da*).
Vbox - FreeBSD - get data from pendrive?-freebsd-content-devjpg


I dont know if this is an issue (not knowing) with Vbox or with FreeBSD.

Any advice / hints please?
 
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AOUT(4) 						   BSD Kernel Interfaces Manual 						   AOUT(4)

NAME
aout -- kernel support for executing binary files in legacy a.out format SYNOPSIS
kldload a.out DESCRIPTION
The a.out(5) executable format was used before the release of FreeBSD 3.0. Since i386 was the only supported architecture at that time, a.out(5) executables can only be activated on platforms that support execution of i386 code, such as i386 and amd64. To add kernel support for old syscalls and old syscall invocation methods, place the following options in the kernel configuration file: options COMPAT_43 options COMPAT_FREEBSD32 The COMPAT_FREEBSD32 option is only required on 64-bit CPU architectures. The aout.ko module needs to be loaded with the kldload(8) utility in order to support the a.out(5) image activator: kldload aout Alternatively, to load the module at boot time, place the following line in loader.conf(5): aout_load="YES" The a.out(5) format was mainstream quite a long time ago. Reasonable default settings and security requirements of modern operating systems today contradict the default environment of that time and require adjustments of the system to mimic natural environment for old binaries. The following sysctl(8) tunables are useful for this: security.bsd.map_at_zero Set to 1 to allow mapping of process pages at address 0. Some very old ZMAGIC executable images require text mapping at address 0. kern.pid_max Old versions of FreeBSD used signed 16-bit type for pid_t. Current kernels use 32-bit type for pid_t, and allow process id's up to 99999. Such values cannot be represented by old pid_t, mostly causing issues for processes using wait(2) syscalls, for example shells. Set the sysctl to 30000 to work around the problem. kern.elf32.read_exec Set to 1 to force any accessible memory mapping performed by 32-bit process to allow execution, see mmap(2). Old i386 CPUs did not have a bit in PTE which disallowed execution from the page, so many old programs did not specify PROT_EXEC even for mapping of executable code. The sysctl forces PROT_EXEC if mapping has any access allowed at all. The setting is only needed if the host architecture allows non-executable mappings. SEE ALSO
execve(2), a.out(5), elf(5), sysctl(8) HISTORY
The a.out(5) executable format was used on ancient AT&T UNIX and served as the main executable format for FreeBSD from the beginning up to FreeBSD 2.2.9. In FreeBSD 3.0 it was superseded by elf(5). AUTHORS
The aout manual page was written by Konstantin Belousov <kib@FreeBSD.org>. BUGS
On 64bit architectures, not all wrappers for older syscalls are implemented. BSD
August 14, 2012 BSD

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