Commit graph

287 commits

Author SHA1 Message Date
Ben Gras
1561067ee4 Grant system dynamic-only. 2006-06-30 14:40:29 +00:00
Ben Gras
b654c02f55 Give pm its own brk() so malloc() works in pm. pm needs more stack for this. 2006-06-30 14:36:11 +00:00
Ben Gras
b5179d7025 Split do_brk in a stub and a function that does the real work, so that
the real work can be called from elsewhere too. Specifically, to allow PM
its own brk().
2006-06-30 14:35:38 +00:00
Ben Gras
0323892f71 3rd fix for improper behaviour on crashing driver with safe_io_conversion 2006-06-29 14:24:07 +00:00
Ben Gras
bfca7d68ba Fix another bug related to trying i/o more than once 2006-06-28 12:20:30 +00:00
Ben Gras
46646a49a8 Don't print cloexec 2006-06-28 10:04:32 +00:00
Ben Gras
f9fb0ff546 Fix bug where safe conversion doesn't happen after 1st time in loop 2006-06-28 10:03:18 +00:00
Ben Gras
bd535a120b . satisfy some gcc warnings (uninitialized/unused variables)
. change cloexec mask from long to fd_set to remove 32 fd's per
   process restriction (from cloexec at least)
2006-06-27 16:47:35 +00:00
Ben Gras
a587273c56 . expanded grant manipulation interface to more direct
manipulation
. made fs allocate a grant for every ioctl, even if no data
  is being copied, in order to disambiguate concurrent ioctls
  on the same minor
2006-06-26 16:08:42 +00:00
Philip Homburg
2f50f92eb3 Move inet to safe copies. 2006-06-26 16:03:35 +00:00
Philip Homburg
de07a562d1 Vectored safe copies for inet. 2006-06-26 14:20:11 +00:00
Philip Homburg
14c9743ecf First cut at safe copies for inet. Breaks tcpstat. 2006-06-26 11:17:19 +00:00
Philip Homburg
8dfac43a75 Print ipc_to in hex. Also print the 'system' call mask. 2006-06-23 13:27:03 +00:00
Ben Gras
82855e9cf5 . leave out dead code from device.c
. don't loop doing a receive() after sendrec() - chance of recovering is not
  high, and can lead to receive()ing a notify() (which can't happen in sendrec()),
  which is terrible
. return status from device when DEV_CANCEL is done on a signal; hardcode EAGAIN to
  become EINTR though
2006-06-23 11:51:56 +00:00
Ben Gras
7b6a1e5f59 More space for rs 2006-06-20 10:59:45 +00:00
Ben Gras
0d39b17655 Changed order of -lsys and -lsysutil for printf() 2006-06-20 10:50:29 +00:00
Ben Gras
705f1039d9 order changed for printf() 2006-06-20 10:47:25 +00:00
Ben Gras
150c964b49 Fix for losing REVIVE 2006-06-20 10:12:30 +00:00
Ben Gras
2384a85296 FS support for grant-based i/o.
For character device i/o, FS does a so-called 'magic' grant to let the
driver copy from or to user space. As this is done in FS address space,
the driver is told to do this in FS address space. The redirection to
the right user process then happens at copy-time in the kernel, using the
FS grant table. This also happens for DEV_READ and DEV_WRITE on block
devices.

For other block device i/o, which happens from/to FS buffers, FS does
a 'direct' grant to its own address space for the driver.

After the i/o returns, this access has to be K-I-L-L-E-D, revoked.
Sometimes this is after a SUSPEND and DEV_REVIVE, in which case the
revoking happens in pipe.c.

This conversion happens in safe_io_conversion() in device.c, called
by dev_io and dev_bio.

FS has to pre-allocate its own space for these grant tables. This happens
in main.c.
2006-06-20 10:12:09 +00:00
Ben Gras
54f1e6d3d4 Use endpoint_t 2006-06-20 10:04:33 +00:00
Ben Gras
7a76a7a495 Rename protected to prot
Also print size of grant table known in system
2006-06-20 10:03:48 +00:00
Philip Homburg
221e731e45 Wake up writer when selecting for read on an empty pipe.
Set fp_revived to NOT_REVIVING when decrementing reviving.
2006-06-14 13:17:41 +00:00
Philip Homburg
cb02a90b77 Fixed some select bugs related to pipes. Removed SELFD_* because they were
bogus and unused.
2006-06-07 14:41:47 +00:00
Philip Homburg
e9aabcf2f8 Disabled building rescue driver (no longer needed). Moved allocmem from
library to the memory driver. Always put output from within TTY directly on
the console. Removed second include of driver.h from tty.c. Made tty_inrepcode
bigger. First step to move PM and FS calls that are not regular (API)
system calls out of callnr.h (renumbered them, and removed them from the
table.c files). Imported the Minix-vmd uname implementation. This provides
a more stable ABI than the current implementation. Added a bit of security
checking. Unfortunately not nearly enough to get a secure system. Fixed a
bug related to the sizes of the programs in the image (in PM patch_mem_chunks).
2006-05-19 12:19:37 +00:00
Philip Homburg
c3cf4ef460 Fixed off by one error in backoff code. Limit backoff to 1 second for
disk drivers.
2006-05-15 12:08:43 +00:00
Philip Homburg
c9ff3994f1 Unpause requests (to FS) can be generated in parallel to other requests. 2006-05-15 12:06:19 +00:00
Philip Homburg
f0186f4179 Do not unmap a driver when the driver dies (it interferes with restarting
disk drivers). Fixed accounting for REVIVING/reviving.
2006-05-15 11:43:06 +00:00
Philip Homburg
ae92cc208d The new service command managed to escape. 2006-05-11 15:30:56 +00:00
Philip Homburg
14b7a72ba3 Init need more space (the results of removing the special case for init in
adjust in PM). Better flags dump in IS.
2006-05-11 15:00:46 +00:00
Philip Homburg
e4967b06bb Special code for restarting disk drivers (-c flag in service). 2006-05-11 14:58:33 +00:00
Philip Homburg
773844a816 New interface between PM and FS. 2006-05-11 14:57:23 +00:00
Ben Gras
461a4fafb1 Added fchmod() and fchown() 2006-04-18 11:26:04 +00:00
Ben Gras
7497a76779 More filesystems. 2006-03-28 11:34:59 +00:00
Ben Gras
2d5058685d Don't open pipes readwrite as it leads to confusion. 2006-03-28 11:28:16 +00:00
Ben Gras
52cd12195e Typo 2006-03-28 10:09:43 +00:00
Ben Gras
7b58dd7f9b Renamed findproc() to _pm_findproc() to reduce polluting of application
namespace.
2006-03-25 04:49:04 +00:00
Ben Gras
df9f4f4369 . minor fix in select() logic on pipes
. fix in pipe_check when 'notouch' is on - we touched something!
2006-03-24 20:53:10 +00:00
Philip Homburg
6e0bf57f82 Fixed bug in tcp select, added NWIOTCPGERROR. 2006-03-24 14:06:03 +00:00
Philip Homburg
e695deb8f8 Fixed mq leak in NWIOQUERYPARAM. 2006-03-24 14:05:11 +00:00
Ben Gras
26a59eea43 readlink(); check bounds
top: add 'system' cpu time to 'kernel', 'idle' and 'user'
2006-03-17 13:34:40 +00:00
Ben Gras
eae250dea4 . load average calculation changed to calculate it all over every tick
instead of keeping a running total of enqueued processes
   (because somehow the load average was broken)
 . added SI_KPROC_TAB to get a copy of kernel process table from PM, for
   a top implementation
 . fixed arg to sys_nice() to make it an endpoint, not a slot number
2006-03-16 09:33:35 +00:00
Ben Gras
6e7ba75acb Driver disappearing during dev_io() is not a fatal error. 2006-03-15 21:55:32 +00:00
Ben Gras
ff67776995 FS:
. loops checked for PID_FREE
  . exit broken down in exit and cleanup functions; when reboot happens,
    cleanup is done but not exit (as processes have not actually exited),
    this keeps drivers working
  . fixed a few uninitialized and unused variables

scripts:
  . new packaging system
2006-03-15 15:34:12 +00:00
Ben Gras
557d865b35 Removed some debug prints 2006-03-15 15:16:16 +00:00
Philip Homburg
50d805144c dmap_io now returns a status. map_driver no longer calls dev_up. 2006-03-15 13:37:20 +00:00
Philip Homburg
454dc8a180 Disabled special processing of KILL signals that are passed to pm by the kernel 2006-03-15 11:35:53 +00:00
Philip Homburg
57ed4b2bf7 Pass endpoint to sys_trace instead of slot number. 2006-03-15 11:32:00 +00:00
Ben Gras
def8c13ba8 Do a sync() before reboot()ing in FS. 2006-03-14 13:54:20 +00:00
Ben Gras
1a7f7d6333 at_wini: removed RO_BIT misfeature, not used any more
pm: fixed rebooting by making a copy of the monitor code from the user
    process. this is necessary because that process is dead by the time
    sys_abort() is called.

    also added more info to the "can't reply" panic.
2006-03-13 13:21:13 +00:00
Ben Gras
cd8905f906 Don't need this change with new reboot 2006-03-13 10:36:52 +00:00