Commit graph

25 commits

Author SHA1 Message Date
David van Moolenbroek
b8b8f537bd IPC privileges fixes
Kernel:
o Remove s_ipc_sendrec, instead using s_ipc_to for all send primitives
o Centralize s_ipc_to bit manipulation,
  - disallowing assignment of bits pointing to unused priv structs;
  - preventing send-to-self by not setting bit for own priv struct;
  - preserving send mask matrix symmetry in all cases
o Add IPC send mask checks to SENDA, which were missing entirely somehow
o Slightly improve IPC stats accounting for SENDA
o Remove SYSTEM from user processes' send mask
o Half-fix the dependency between boot image order and process numbers,
  - correcting the table order of the boot processes;
  - documenting the order requirement needed for proper send masks;
  - warning at boot time if the order is violated

RS:
o Add support in /etc/drivers.conf for servers that talk to user processes,
  - disallowing IPC to user processes if no "ipc" field is present
  - adding a special "USER" label to explicitly allow IPC to user processes
o Always apply IPC masks when specified; remove -i flag from service(8)
o Use kernel send mask symmetry to delay adding IPC permissions for labels
  that do not exist yet, adding them to that label's process upon creation
o Add VM to ipc permissions list for rtl8139 and fxp in drivers.conf

Left to future fixes:
o Removal of the table order vs process numbers dependency altogether,
  possibly using per-process send list structures as used for SYSTEM calls
o Proper assignment of send masks to boot processes;
  some of the assigned (~0) masks are much wider than necessary
o Proper assignment of IPC send masks for many more servers in drivers.conf
o Removal of the debugging warning about the now legitimate case where RS's
  add_forward_ipc cannot find the IPC destination's label yet
2009-07-02 16:25:31 +00:00
David van Moolenbroek
3affa4c796 'service' null pointer dereference fix 2009-05-12 16:52:00 +00:00
Ben Gras
e5717f7aef clarify not found error message a bit. 2009-04-14 14:16:24 +00:00
Ben Gras
3cc092ff06 . new kernel call sysctl for generic unprivileged system operations;
now used for printing diagnostic messages through the kernel message
   buffer. this lets processes print diagnostics without sending messages
   to tty and log directly, simplifying the message protocol a lot and
   reducing difficulties with deadlocks and other situations in which
   diagnostics are blackholed (e.g. grants don't work). this makes
   DIAGNOSTICS(_S), ASYN_DIAGNOSTICS and DIAG_REPL obsolete, although tty
   and log still accept the codes for 'old' binaries. This also simplifies
   diagnostics in several servers and drivers - only tty needs its own
   kputc() now.
 . simplifications in vfs, and some effort to get the vnode references
   right (consistent) even during shutdown. m_mounted_on is now NULL
   for root filesystems (!) (the original and new root), a less awkward
   special case than 'm_mounted_on == m_root_node'. root now has exactly
   one reference, to root, if no files are open, just like all other
   filesystems. m_driver_e is unused.
2009-01-26 17:43:59 +00:00
Ben Gras
628ed99101 CPROFILE wants this 2009-01-09 21:11:23 +00:00
Ben Gras
eeba8ef01f No more HZ. 2008-12-11 14:43:53 +00:00
Ben Gras
c078ec0331 Basic VM and other minor improvements.
Not complete, probably not fully debugged or optimized.
2008-11-19 12:26:10 +00:00
Philip Homburg
9d62f56ea1 SYS_MAPDMAx -> SYS_MAPDMA. 2008-02-25 14:36:28 +00:00
Philip Homburg
ca8291c815 Support for restricting limiting IPC to a set of endpoints. Not enabled by
default, pass -i to service. Do not reply to bogus request types. Reply using
sendnb.
2008-02-21 16:20:22 +00:00
Ben Gras
30ba1ec187 also allow vm_map. 2007-07-11 13:45:06 +00:00
Philip Homburg
56a68dc32b Hack in service to use RS_START instead of RS_UP. RS reports the use of RS_UP. 2007-05-02 15:20:28 +00:00
Philip Homburg
849285f66d Diagnostics from service go to standard error. 2007-04-23 14:42:58 +00:00
Ben Gras
3b08825d85 . service tells you which device it couldn't stat
. bigger rs and ramdisk for drivers
. sanity check for pv_set macro for oversized arguments
2007-02-23 18:22:46 +00:00
Ben Gras
2194bc0310 vfs/mount/rs/service changes:
. changed umount() and mount() to call 'service', so that it can include
   a custom label, so that umount() works again (RS slot gets freed now).
   merged umount() and mount() into one file to encode keep this label
   knowledge in one file.
 . removed obsolete RS_PID field and RS_RESCUE rescue command
 . added label to RS_START struct
 . vfs no longer does kill of fs process on unmount (which was failing
   due to RS_PID request not working)
 . don't assume that if error wasn't one of three errors, that no error
   occured in vfs/request.c
mfs changes:
 . added checks to copy statements to truncate copies at buffer sizes
   (left in debug code for now)
 . added checks for null-terminatedness, if less than NAME_MAX was copied
 . added checks for copy function success
is changes: 
 . dump rs label
drivers.conf changes:
 . added acl for mfs so that mfs can be started with 'service start',
   so that a custom label can be provided
2007-01-22 15:25:41 +00:00
Philip Homburg
0c1d433f60 rs changes (also use driver configurations in the image ramdisk) 2006-10-31 13:35:04 +00:00
Philip Homburg
f9ccfca2a1 (Incomplete) support for access control in PCI (pci_set_acl).
-script argument to service for crash recovery scripts
-config argument to service for driver resource configuration
restart command in service to restart a driver after a crash (for use in
crash recovery scripts).
down and refresh now take labels instead of pids.
verious changes in rs to make this work.
2006-10-20 15:01:32 +00:00
Ben Gras
b888922d62 Added 'service run' to run a service without restart. 2006-08-15 15:54:51 +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
ae92cc208d The new service command managed to escape. 2006-05-11 15:30:56 +00:00
Ben Gras
39f1fb81ea Don't print usage if service can't find binary. 2006-01-17 15:56:55 +00:00
Jorrit Herder
78f20c3959 Rest ... 2005-10-21 13:46:47 +00:00
Jorrit Herder
9333141704 New rescue functionality. 2005-10-21 13:28:26 +00:00
Jorrit Herder
2a98fed515 New Reincarnation Server functionality.
- service refresh: to cleanly stop and restart a server or driver
- binary exponential backoff: don't restart in a loop
2005-10-20 20:31:18 +00:00
Jorrit Herder
5a9dec8bd2 New signal handling behaviour at PM (services can be killed).
New Shift-F6 dump for RS server at IS.
New getnpid, getnproc, getpproc library calls at PM.
New reincarnation server (basic functionality is there now).
2005-10-12 15:07:38 +00:00
Jorrit Herder
7bf400a709 *** empty log message *** 2005-08-23 11:31:32 +00:00
Renamed from servers/sm/service.c (Browse further)