cb176df60f
UPDATING INFO:
20100317:
/usr/src/etc/system.conf updated to ignore default kernel calls: copy
it (or merge it) to /etc/system.conf.
The hello driver (/dev/hello) added to the distribution:
# cd /usr/src/commands/scripts && make clean install
# cd /dev && MAKEDEV hello
KERNEL CHANGES:
- Generic signal handling support. The kernel no longer assumes PM as a signal
manager for every process. The signal manager of a given process can now be
specified in its privilege slot. When a signal has to be delivered, the kernel
performs the lookup and forwards the signal to the appropriate signal manager.
PM is the default signal manager for user processes, RS is the default signal
manager for system processes. To enable ptrace()ing for system processes, it
is sufficient to change the default signal manager to PM. This will temporarily
disable crash recovery, though.
- sys_exit() is now split into sys_exit() (i.e. exit() for system processes,
which generates a self-termination signal), and sys_clear() (i.e. used by PM
to ask the kernel to clear a process slot when a process exits).
- Added a new kernel call (i.e. sys_update()) to swap two process slots and
implement live update.
PM CHANGES:
- Posix signal handling is no longer allowed for system processes. System
signals are split into two fixed categories: termination and non-termination
signals. When a non-termination signaled is processed, PM transforms the signal
into an IPC message and delivers the message to the system process. When a
termination signal is processed, PM terminates the process.
- PM no longer assumes itself as the signal manager for system processes. It now
makes sure that every system signal goes through the kernel before being
actually processes. The kernel will then dispatch the signal to the appropriate
signal manager which may or may not be PM.
SYSLIB CHANGES:
- Simplified SEF init and LU callbacks.
- Added additional predefined SEF callbacks to debug crash recovery and
live update.
- Fixed a temporary ack in the SEF init protocol. SEF init reply is now
completely synchronous.
- Added SEF signal event type to provide a uniform interface for system
processes to deal with signals. A sef_cb_signal_handler() callback is
available for system processes to handle every received signal. A
sef_cb_signal_manager() callback is used by signal managers to process
system signals on behalf of the kernel.
- Fixed a few bugs with memory mapping and DS.
VM CHANGES:
- Page faults and memory requests coming from the kernel are now implemented
using signals.
- Added a new VM call to swap two process slots and implement live update.
- The call is used by RS at update time and in turn invokes the kernel call
sys_update().
RS CHANGES:
- RS has been reworked with a better functional decomposition.
- Better kernel call masks. com.h now defines the set of very basic kernel calls
every system service is allowed to use. This makes system.conf simpler and
easier to maintain. In addition, this guarantees a higher level of isolation
for system libraries that use one or more kernel calls internally (e.g. printf).
- RS is the default signal manager for system processes. By default, RS
intercepts every signal delivered to every system process. This makes crash
recovery possible before bringing PM and friends in the loop.
- RS now supports fast rollback when something goes wrong while initializing
the new version during a live update.
- Live update is now implemented by keeping the two versions side-by-side and
swapping the process slots when the old version is ready to update.
- Crash recovery is now implemented by keeping the two versions side-by-side
and cleaning up the old version only when the recovery process is complete.
DS CHANGES:
- Fixed a bug when the process doing ds_publish() or ds_delete() is not known
by DS.
- Fixed the completely broken support for strings. String publishing is now
implemented in the system library and simply wraps publishing of memory ranges.
Ideally, we should adopt a similar approach for other data types as well.
- Test suite fixed.
DRIVER CHANGES:
- The hello driver has been added to the Minix distribution to demonstrate basic
live update and crash recovery functionalities.
- Other drivers have been adapted to conform the new SEF interface.
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
#define NCALLS 112 /* number of system calls allowed */
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#define EXIT 1
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#define FORK 2
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#define READ 3
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#define WRITE 4
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#define OPEN 5
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#define CLOSE 6
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#define WAIT 7
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#define CREAT 8
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#define LINK 9
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#define UNLINK 10
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#define WAITPID 11
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#define CHDIR 12
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#define TIME 13
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#define MKNOD 14
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#define CHMOD 15
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#define CHOWN 16
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#define BRK 17
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#define STAT 18
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#define LSEEK 19
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#define MINIX_GETPID 20
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#define MOUNT 21
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#define UMOUNT 22
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#define SETUID 23
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#define GETUID 24
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#define STIME 25
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#define PTRACE 26
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#define ALARM 27
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#define FSTAT 28
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#define PAUSE 29
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#define UTIME 30
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#define ACCESS 33
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#define SYNC 36
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#define KILL 37
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#define RENAME 38
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#define MKDIR 39
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#define RMDIR 40
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#define DUP 41
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#define PIPE 42
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#define TIMES 43
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#define SYMLINK 45
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#define SETGID 46
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#define GETGID 47
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#define SIGNAL 48
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#define RDLNK 49
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#define LSTAT 50
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#define IOCTL 54
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#define FCNTL 55
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#define FS_READY 57
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#define EXEC 59
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#define UMASK 60
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#define CHROOT 61
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#define SETSID 62
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#define GETPGRP 63
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#define ITIMER 64
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#define GETGROUPS 65
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#define SETGROUPS 66
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#define GETMCONTEXT 67
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#define SETMCONTEXT 68
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/* Posix signal handling. */
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#define SIGACTION 71
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#define SIGSUSPEND 72
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#define SIGPENDING 73
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#define SIGPROCMASK 74
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#define SIGRETURN 75
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#define REBOOT 76
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#define SVRCTL 77
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#define SYSUNAME 78
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#define GETSYSINFO 79 /* to PM or FS */
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#define GETDENTS 80 /* to FS */
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#define LLSEEK 81 /* to FS */
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#define FSTATFS 82 /* to FS */
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#define SELECT 85 /* to FS */
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#define FCHDIR 86 /* to FS */
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#define FSYNC 87 /* to FS */
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#define GETPRIORITY 88 /* to PM */
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#define SETPRIORITY 89 /* to PM */
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#define GETTIMEOFDAY 90 /* to PM */
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#define SETEUID 91 /* to PM */
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#define SETEGID 92 /* to PM */
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#define TRUNCATE 93 /* to FS */
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#define FTRUNCATE 94 /* to FS */
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#define FCHMOD 95 /* to FS */
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#define FCHOWN 96 /* to FS */
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#define GETSYSINFO_UP 97 /* to PM or FS */
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#define SPROF 98 /* to PM */
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#define CPROF 99 /* to PM */
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/* Calls provided by PM and FS that are not part of the API */
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#define EXEC_NEWMEM 100 /* from FS or RS to PM: new memory map for
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* exec
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*/
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#define SRV_FORK 101 /* to PM: special fork call for RS */
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#define EXEC_RESTART 102 /* to PM: final part of exec for RS */
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#define PROCSTAT 103 /* to PM */
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#define GETPROCNR 104 /* to PM */
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#define GETEPINFO 107 /* to PM: get pid/uid/gid of an endpoint */
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#define ADDDMA 108 /* to PM: inform PM about a region of memory
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* that is used for bus-master DMA
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*/
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#define DELDMA 109 /* to PM: inform PM that a region of memory
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* that is no longer used for bus-master DMA
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*/
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#define GETDMA 110 /* to PM: ask PM for a region of memory
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* that should not be used for bus-master DMA
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* any longer
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*/
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#define SRV_KILL 111 /* to PM: special kill call for RS */
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#define TASK_REPLY 121 /* to FS: reply code from drivers, not
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* really a standalone call.
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*/
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#define MAPDRIVER 122 /* to FS, map a device */
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