This patch adds support for Unix98 pseudo terminals, that is,
posix_openpt(3), grantpt(3), unlockpt(3), /dev/ptmx, and /dev/pts/.
The latter is implemented with a new pseudo file system, PTYFS.
In effect, this patch adds secure support for unprivileged pseudo
terminal allocation, allowing programs such as tmux(1) to be used by
non-root users as well. Test77 has been extended with new tests, and
no longer needs to run as root.
The new functionality is optional. To revert to the old behavior,
remove the "ptyfs" entry from /etc/fstab.
Technical nodes:
o The reason for not implementing the NetBSD /dev/ptm approach is that
implementing the corresponding ioctl (TIOCPTMGET) would require
adding a number of extremely hairy exceptions to VFS, including the
PTY driver having to create new file descriptors for its own device
nodes.
o PTYFS is required for Unix98 PTYs in order to avoid that the PTY
driver has to be aware of old-style PTY naming schemes and even has
to call chmod(2) on a disk-backed file system. PTY cannot be its
own PTYFS since a character driver may currently not also be a file
system. However, PTYFS may be subsumed into a DEVFS in the future.
o The Unix98 PTY behavior differs somewhat from NetBSD's, in that
slave nodes are created on ptyfs only upon the first call to
grantpt(3). This approach obviates the need to revoke access as
part of the grantpt(3) call.
o Shutting down PTY may leave slave nodes on PTYFS, but once PTY is
restarted, these leftover slave nodes will be removed before they
create a security risk. Unmounting PTYFS will make existing PTY
slaves permanently unavailable, and absence of PTYFS will block
allocation of new Unix98 PTYs until PTYFS is (re)mounted.
Change-Id: I822b43ba32707c8815fd0f7d5bb7a438f51421c1
- Removed an "export CPPFLAGS=${FLAG}" which prevented proper settings
from the environment to be passed to the build step.
- Re-arranged variable settings at the top, so that we don't need
to evaluate the argument to vfat mkfs command anymore in
arm_sdimage.sh
- "Merged" both script for easier comparison in the future.
Change-Id: Id59f902e4eaeb7f268d5051789462f14421a114a
The syntax of the stat(1) command varies between Linux and FreeBSD.
This prevented `x86_hdimage.sh -i` from succeeding on FreeBSD 10.0.
The fix is to use the NetBSD stat from the tooldir for all systems.
Change-Id: I121e5fd36b0d4a944ba0109cf58095ab7d150847
Remove the usage of sloppy files list in the build scripts to
get early errors when files are added.
Change-Id: Id89c1391da675c76d7511a973f7f2dcda8befbb2
MKGCCCMDS=yes and MKBINUTILS=yes where added on the build command line
while they should have been left to the developer's discretion.
To build and install binutils and gcc do the following:
$ BUILDVARS='-V MKBINUTILS=yes -V MKGCC=yes -V MKGCCCMDS=yes' \
./releasetools/arm_sdimage.sh
or
$ BUILDVARS='-V MKBINUTILS=yes -V MKGCC=yes -V MKGCCCMDS=yes' \
./releasetools/x86_hdimage.sh
Change-Id: Icb46a3422f527747768fa107d14fc19ff3ac0a63
* Remove static proto.dev
* Update releasetools/*image.sh not to use proto.dev, as well as
minor comments cleanup
* Add TOOL_TOPROTO
Change-Id: If7dc16d4ebb3b0c4e859786fad25d4af000c999f
. build writeisofs as a native tool too for it
. also mkfs.mfs: make missing file in proto nonlethal
. make setup script a little more self-sufficient
. hdboot: use INSTALL_FILE instead of INSTALL so that the
results get added to the METALOG
Change-Id: Id233e4c861f81046bf6c4be0510b8a3bf39ff9be
A script that creates a HD image ready to be booted by an x86
emulator, ready to work in a crossbuild environment.
It's really just for qemu/kvm as there's no boot code in
the MBR and no bootloader installed so we rely on the in-kvm
multiboot implementation for now. This is very convenient for
passing args too.
To minimize reliance on external tools, we use the Minix
'partition' utility to write the partition table of the HD
image, which therefore has to be compiled natively.
. new script releasetools/x86_hdimage.sh
. natively compile minix 'partition' utility
. make <machine/partition.h> 64-bit safe for it
Change-Id: If645b4691536752271e0b8a8ed59a34f248dace4
