https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217649
Bug ID: 217649
Summary: cam_open_device is potentially broken; errors with
pass(4) from cam_real_open_device helper function
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: freebsd-bugs@FreeBSD.org
Reporter: n...@freebsd.org
Repro:
- Log in as root (or a user with sudo/su privileges or write access to devices)
- Copy this directory to your FreeBSD machine:
https://people.freebsd.org/~ngie/bugs/cam_open_device/
- cd to the downloaded path and run "make" (don't call "make obj" first).
- Run "./cam_open_device /some/cam/device/path", e.g. "./cam_open_device
/dev/da0".
Expected results:
- If passthrough support is enabled, it should open the device, but not do
anything with it.
Actual results:
I get the following error message from the program when running it against my
fake mpt(4) controller in my VMware fusion instance:
# ls -l /dev/pass*
crw------- 1 root operator 0x36 Mar 6 20:03 /dev/pass0
crw------- 1 root operator 0x37 Mar 6 20:03 /dev/pass1
# ./cam_open_device da0
cam_open_device: cam_open_device failed: Operation not permitted
cam_open_device: cam_errbuf is: cam_real_open_device: couldn't open passthrough
device /dev/pass0
cam_real_open_device: Operation not permitted
#
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