Commit graph

14 commits

Author SHA1 Message Date
David van Moolenbroek
da21d85025 Add PTYFS, Unix98 pseudo terminal support
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
2015-06-23 17:43:46 +00:00
Lionel Sambuc
17eed55f28 releasetools/*image.sh
- 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
2014-08-08 17:42:41 +02:00
Lionel Sambuc
84bb300f88 Remove /multiboot
This is just a duplicate of /boot/.temp, and it is not used anymore.

Change-Id: I8a4d6e68829de3ff3628ff0fe15f6d1d0a6b128f
2014-07-31 16:00:31 +02:00
Ben Gras
e3a0e6c3c3 custom message type for VM_REMAP, VM_REMAP_RO 2014-07-28 17:06:16 +02:00
Cristiano Giuffrida
3bfef65a9a releasetools: Add rc.local support when building x86 images. 2014-07-28 17:06:11 +02:00
Koustubha Bhat
2d00147b3f CREATE_IMAGE_ONLY option added to releasetools/x86_hdimage.sh 2014-07-28 17:06:04 +02:00
Thomas Cort
6bc75c4a0d x86_hdimage.sh: use nbstat from tooldir.
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
2014-07-28 17:05:09 +02:00
Kees Jongenburger
b12bb57943 build:Remove the usage of sloppy file list.
Remove the usage of sloppy files list in the build scripts to
get early errors when files are added.

Change-Id: Id89c1391da675c76d7511a973f7f2dcda8befbb2
2014-07-28 17:05:08 +02:00
Lionel Sambuc
cd36dd7703 Fix devman boot crash when using image scripts
This was caused by a missing line in the generated fstab.

Change-Id: If0590a27706bbb62e53d72f224ccb332e31421f6
2014-03-02 12:28:32 +01:00
Lionel Sambuc
859a265cba Removing MK{GCCCMDS,BINUTILS}=yes in image scripts
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
2014-03-01 09:05:01 +01:00
Lionel Sambuc
bbb8908c16 Adapting build system to call MAKEDEV for /dev
* 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
2014-03-01 09:04:56 +01:00
Ben Gras
8dbe32610b mkfs.mfs -I: insert fs at offset feature
. use it in x86_hdimage.sh:
	  avoid copying big FS images into iso & hd images each time

Change-Id: I0775f43cd1821ea7be2fec5b96d107a68afb96d6
2013-11-08 11:59:47 +00:00
Ben Gras
09143af258 x86_hdimage.sh -i: crossbuild x86 release CD
. 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
2013-11-07 13:44:22 +00:00
Ben Gras
a9db0ea184 x86 hd image creator
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
2013-09-25 19:30:22 +02:00