96 lines
4.3 KiB
C
96 lines
4.3 KiB
C
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/* This table has one slot per process. It contains all the process management
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* information for each process. Among other things, it defines the text, data
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* and stack segments, uids and gids, and various flags. The kernel and file
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* systems have tables that are also indexed by process, with the contents
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* of corresponding slots referring to the same process in all three.
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*/
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#include <limits.h>
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#include <minix/timers.h>
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#include <signal.h>
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#include <sys/cdefs.h>
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/* Needs to be included here, for 'ps' etc */
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#include "const.h"
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EXTERN struct mproc {
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char mp_exitstatus; /* storage for status when process exits */
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char mp_sigstatus; /* storage for signal # for killed procs */
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pid_t mp_pid; /* process id */
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endpoint_t mp_endpoint; /* kernel endpoint id */
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pid_t mp_procgrp; /* pid of process group (used for signals) */
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pid_t mp_wpid; /* pid this process is waiting for */
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int mp_parent; /* index of parent process */
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int mp_tracer; /* index of tracer process, or NO_TRACER */
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/* Child user and system times. Accounting done on child exit. */
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clock_t mp_child_utime; /* cumulative user time of children */
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clock_t mp_child_stime; /* cumulative sys time of children */
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/* Real and effective uids and gids. */
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uid_t mp_realuid; /* process' real uid */
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uid_t mp_effuid; /* process' effective uid */
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gid_t mp_realgid; /* process' real gid */
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gid_t mp_effgid; /* process' effective gid */
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/* Supplemental groups. */
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int mp_ngroups; /* number of supplemental groups */
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gid_t mp_sgroups[NGROUPS_MAX];/* process' supplemental groups */
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/* Signal handling information. */
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sigset_t mp_ignore; /* 1 means ignore the signal, 0 means don't */
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sigset_t mp_catch; /* 1 means catch the signal, 0 means don't */
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sigset_t mp_sigmask; /* signals to be blocked */
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sigset_t mp_sigmask2; /* saved copy of mp_sigmask */
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sigset_t mp_sigpending; /* pending signals to be handled */
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sigset_t mp_ksigpending; /* bitmap for pending signals from the kernel */
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sigset_t mp_sigtrace; /* signals to hand to tracer first */
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struct sigaction mp_sigact[_NSIG]; /* as in sigaction(2) */
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#ifdef __ACK__
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char mp_padding[60]; /* align structure with new libc */
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#endif
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vir_bytes mp_sigreturn; /* address of C library __sigreturn function */
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minix_timer_t mp_timer; /* watchdog timer for alarm(2), setitimer(2) */
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clock_t mp_interval[NR_ITIMERS]; /* setitimer(2) repetition intervals */
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unsigned mp_flags; /* flag bits */
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unsigned mp_trace_flags; /* trace options */
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message mp_reply; /* reply message to be sent to one */
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/* Process execution frame. Both fields are used by procfs. */
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vir_bytes mp_frame_addr; /* ptr to proc's initial stack arguments */
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size_t mp_frame_len; /* size of proc's initial stack arguments */
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/* Scheduling priority. */
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signed int mp_nice; /* nice is PRIO_MIN..PRIO_MAX, standard 0. */
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/* User space scheduling */
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endpoint_t mp_scheduler; /* scheduler endpoint id */
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char mp_name[PROC_NAME_LEN]; /* process name */
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int mp_magic; /* sanity check, MP_MAGIC */
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} mproc[NR_PROCS];
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/* Flag values */
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#define IN_USE 0x00001 /* set when 'mproc' slot in use */
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#define WAITING 0x00002 /* set by WAITPID system call */
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#define ZOMBIE 0x00004 /* waiting for parent to issue WAITPID call */
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#define PROC_STOPPED 0x00008 /* process is stopped in the kernel */
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#define ALARM_ON 0x00010 /* set when SIGALRM timer started */
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#define EXITING 0x00020 /* set by EXIT, process is now exiting */
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#define TOLD_PARENT 0x00040 /* parent wait() completed, ZOMBIE off */
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#define TRACE_STOPPED 0x00080 /* set if process stopped for tracing */
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#define SIGSUSPENDED 0x00100 /* set by SIGSUSPEND system call */
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#define VFS_CALL 0x00400 /* set if waiting for VFS (normal calls) */
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#define NEW_PARENT 0x00800 /* process's parent changed during VFS call */
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#define UNPAUSED 0x01000 /* VFS has replied to unpause request */
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#define PRIV_PROC 0x02000 /* system process, special privileges */
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#define PARTIAL_EXEC 0x04000 /* process got a new map but no content */
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#define TRACE_EXIT 0x08000 /* tracer is forcing this process to exit */
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#define TRACE_ZOMBIE 0x10000 /* waiting for tracer to issue WAITPID call */
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#define DELAY_CALL 0x20000 /* waiting for call before sending signal */
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#define TAINTED 0x40000 /* process is 'tainted' */
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#define MP_MAGIC 0xC0FFEE0
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