b423d7b477
o Support for ptrace T_ATTACH/T_DETACH and T_SYSCALL o PM signal handling logic should now work properly, even with debuggers being present o Asynchronous PM/VFS protocol, full IPC support for senda(), and AMF_NOREPLY senda() flag DETAILS Process stop and delay call handling of PM: o Added sys_runctl() kernel call with sys_stop() and sys_resume() aliases, for PM to stop and resume a process o Added exception for sending/syscall-traced processes to sys_runctl(), and matching SIGKREADY pseudo-signal to PM o Fixed PM signal logic to deal with requests from a process after stopping it (so-called "delay calls"), using the SIGKREADY facility o Fixed various PM panics due to race conditions with delay calls versus VFS calls o Removed special PRIO_STOP priority value o Added SYS_LOCK RTS kernel flag, to stop an individual process from running while modifying its process structure Signal and debugger handling in PM: o Fixed debugger signals being dropped if a second signal arrives when the debugger has not retrieved the first one o Fixed debugger signals being sent to the debugger more than once o Fixed debugger signals unpausing process in VFS; removed PM_UNPAUSE_TR protocol message o Detached debugger signals from general signal logic and from being blocked on VFS calls, meaning that even VFS can now be traced o Fixed debugger being unable to receive more than one pending signal in one process stop o Fixed signal delivery being delayed needlessly when multiple signals are pending o Fixed wait test for tracer, which was returning for children that were not waited for o Removed second parallel pending call from PM to VFS for any process o Fixed process becoming runnable between exec() and debugger trap o Added support for notifying the debugger before the parent when a debugged child exits o Fixed debugger death causing child to remain stopped forever o Fixed consistently incorrect use of _NSIG Extensions to ptrace(): o Added T_ATTACH and T_DETACH ptrace request, to attach and detach a debugger to and from a process o Added T_SYSCALL ptrace request, to trace system calls o Added T_SETOPT ptrace request, to set trace options o Added TO_TRACEFORK trace option, to attach automatically to children of a traced process o Added TO_ALTEXEC trace option, to send SIGSTOP instead of SIGTRAP upon a successful exec() of the tracee o Extended T_GETUSER ptrace support to allow retrieving a process's priv structure o Removed T_STOP ptrace request again, as it does not help implementing debuggers properly o Added MINIX3-specific ptrace test (test42) o Added proper manual page for ptrace(2) Asynchronous PM/VFS interface: o Fixed asynchronous messages not being checked when receive() is called with an endpoint other than ANY o Added AMF_NOREPLY senda() flag, preventing such messages from satisfying the receive part of a sendrec() o Added asynsend3() that takes optional flags; asynsend() is now a #define passing in 0 as third parameter o Made PM/VFS protocol asynchronous; reintroduced tell_fs() o Made PM_BASE request/reply number range unique o Hacked in a horrible temporary workaround into RS to deal with newly revealed RS-PM-VFS race condition triangle until VFS is asynchronous System signal handling: o Fixed shutdown logic of device drivers; removed old SIGKSTOP signal o Removed is-superuser check from PM's do_procstat() (aka getsigset()) o Added sigset macros to allow system processes to deal with the full signal set, rather than just the POSIX subset Miscellaneous PM fixes: o Split do_getset into do_get and do_set, merging common code and making structure clearer o Fixed setpriority() being able to put to sleep processes using an invalid parameter, or revive zombie processes o Made find_proc() global; removed obsolete proc_from_pid() o Cleanup here and there Also included: o Fixed false-positive boot order kernel warning o Removed last traces of old NOTIFY_FROM code THINGS OF POSSIBLE INTEREST o It should now be possible to run PM at any priority, even lower than user processes o No assumptions are made about communication speed between PM and VFS, although communication must be FIFO o A debugger will now receive incoming debuggee signals at kill time only; the process may not yet be fully stopped o A first step has been made towards making the SYSTEM task preemptible
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/* Function prototypes. */
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struct mproc;
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struct stat;
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struct mem_map;
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struct memory;
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#include <timers.h>
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/* alarm.c */
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_PROTOTYPE( int do_alarm, (void) );
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_PROTOTYPE( int do_itimer, (void) );
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_PROTOTYPE( void set_alarm, (struct mproc *rmp, clock_t ticks) );
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_PROTOTYPE( void check_vtimer, (int proc_nr, int sig) );
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/* break.c */
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_PROTOTYPE( int do_brk, (void) );
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/* dma.c */
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_PROTOTYPE( int do_adddma, (void) );
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_PROTOTYPE( int do_deldma, (void) );
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_PROTOTYPE( int do_getdma, (void) );
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/* exec.c */
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_PROTOTYPE( int do_exec, (void) );
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_PROTOTYPE( int exec_newmem, (void) );
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_PROTOTYPE( int do_execrestart, (void) );
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_PROTOTYPE( void exec_restart, (struct mproc *rmp, int result) );
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/* forkexit.c */
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_PROTOTYPE( int do_fork, (void) );
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_PROTOTYPE( int do_fork_nb, (void) );
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_PROTOTYPE( int do_exit, (void) );
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_PROTOTYPE( void exit_proc, (struct mproc *rmp, int exit_status,
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int dump_core) );
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_PROTOTYPE( void exit_restart, (struct mproc *rmp, int dump_core) );
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_PROTOTYPE( int do_waitpid, (void) );
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_PROTOTYPE( int wait_test, (struct mproc *rmp, struct mproc *child) );
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/* getset.c */
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_PROTOTYPE( int do_get, (void) );
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_PROTOTYPE( int do_set, (void) );
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/* main.c */
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_PROTOTYPE( int main, (void) );
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_PROTOTYPE( void setreply, (int proc_nr, int result) );
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/* misc.c */
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_PROTOTYPE( int do_reboot, (void) );
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_PROTOTYPE( int do_procstat, (void) );
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_PROTOTYPE( int do_sysuname, (void) );
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_PROTOTYPE( int do_getsysinfo, (void) );
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_PROTOTYPE( int do_getsysinfo_up, (void) );
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_PROTOTYPE( int do_getprocnr, (void) );
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_PROTOTYPE( int do_getpuid, (void) );
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_PROTOTYPE( int do_svrctl, (void) );
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_PROTOTYPE( int do_allocmem, (void) );
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_PROTOTYPE( int do_freemem, (void) );
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_PROTOTYPE( int do_getsetpriority, (void) );
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/* profile.c */
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_PROTOTYPE( int do_sprofile, (void) );
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_PROTOTYPE( int do_cprofile, (void) );
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/* signal.c */
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_PROTOTYPE( int do_kill, (void) );
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_PROTOTYPE( int ksig_pending, (void) );
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_PROTOTYPE( int do_pause, (void) );
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_PROTOTYPE( int check_sig, (pid_t proc_id, int signo) );
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_PROTOTYPE( void sig_proc, (struct mproc *rmp, int signo, int trace) );
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_PROTOTYPE( int do_sigaction, (void) );
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_PROTOTYPE( int do_sigpending, (void) );
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_PROTOTYPE( int do_sigprocmask, (void) );
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_PROTOTYPE( int do_sigreturn, (void) );
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_PROTOTYPE( int do_sigsuspend, (void) );
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_PROTOTYPE( void check_pending, (struct mproc *rmp) );
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_PROTOTYPE( void restart_sigs, (struct mproc *rmp) );
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_PROTOTYPE( void vm_notify_sig_wrapper, (endpoint_t ep) );
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/* time.c */
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_PROTOTYPE( int do_stime, (void) );
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_PROTOTYPE( int do_time, (void) );
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_PROTOTYPE( int do_times, (void) );
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_PROTOTYPE( int do_gettimeofday, (void) );
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/* timers.c */
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_PROTOTYPE( void pm_set_timer, (timer_t *tp, int delta,
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tmr_func_t watchdog, int arg) );
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_PROTOTYPE( void pm_expire_timers, (clock_t now) );
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_PROTOTYPE( void pm_cancel_timer, (timer_t *tp) );
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/* trace.c */
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_PROTOTYPE( int do_trace, (void) );
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_PROTOTYPE( void stop_proc, (struct mproc *rmp, int sig_nr) );
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/* utility.c */
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_PROTOTYPE( pid_t get_free_pid, (void) );
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_PROTOTYPE( int no_sys, (void) );
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_PROTOTYPE( char *find_param, (const char *key) );
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_PROTOTYPE( struct mproc *find_proc, (pid_t lpid) );
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_PROTOTYPE( int pm_isokendpt, (int ep, int *proc) );
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_PROTOTYPE( void tell_fs, (struct mproc *rmp, message *m_ptr) );
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