| 1 | /* This table has one slot per process. It contains all the process management
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| 2 | * information for each process. Among other things, it defines the text, data
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| 3 | * and stack segments, uids and gids, and various flags. The kernel and file
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| 4 | * systems have tables that are also indexed by process, with the contents
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| 5 | * of corresponding slots referring to the same process in all three.
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| 6 | */
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| 7 | #include <timers.h>
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| 8 |
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| 9 | EXTERN struct mproc {
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| 10 | struct mem_map mp_seg[NR_LOCAL_SEGS]; /* points to text, data, stack */
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| 11 | char mp_exitstatus; /* storage for status when process exits */
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| 12 | char mp_sigstatus; /* storage for signal # for killed procs */
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| 13 | pid_t mp_pid; /* process id */
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| 14 | pid_t mp_procgrp; /* pid of process group (used for signals) */
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| 15 | pid_t mp_wpid; /* pid this process is waiting for */
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| 16 | int mp_parent; /* index of parent process */
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| 17 |
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| 18 | /* Child user and system times. Accounting done on child exit. */
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| 19 | clock_t mp_child_utime; /* cumulative user time of children */
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| 20 | clock_t mp_child_stime; /* cumulative sys time of children */
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| 21 |
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| 22 | /* Real and effective uids and gids. */
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| 23 | uid_t mp_realuid; /* process' real uid */
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| 24 | uid_t mp_effuid; /* process' effective uid */
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| 25 | gid_t mp_realgid; /* process' real gid */
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| 26 | gid_t mp_effgid; /* process' effective gid */
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| 27 |
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| 28 | /* File identification for sharing. */
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| 29 | ino_t mp_ino; /* inode number of file */
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| 30 | dev_t mp_dev; /* device number of file system */
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| 31 | time_t mp_ctime; /* inode changed time */
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| 32 |
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| 33 | /* Signal handling information. */
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| 34 | sigset_t mp_ignore; /* 1 means ignore the signal, 0 means don't */
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| 35 | sigset_t mp_catch; /* 1 means catch the signal, 0 means don't */
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| 36 | sigset_t mp_sig2mess; /* 1 means transform into notify message */
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| 37 | sigset_t mp_sigmask; /* signals to be blocked */
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| 38 | sigset_t mp_sigmask2; /* saved copy of mp_sigmask */
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| 39 | sigset_t mp_sigpending; /* pending signals to be handled */
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| 40 | struct sigaction mp_sigact[_NSIG + 1]; /* as in sigaction(2) */
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| 41 | vir_bytes mp_sigreturn; /* address of C library __sigreturn function */
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| 42 | struct timer mp_timer; /* watchdog timer for alarm(2) */
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| 43 |
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| 44 | /* Backwards compatibility for signals. */
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| 45 | sighandler_t mp_func; /* all sigs vectored to a single user fcn */
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| 46 |
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| 47 | unsigned mp_flags; /* flag bits */
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| 48 | vir_bytes mp_procargs; /* ptr to proc's initial stack arguments */
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| 49 | struct mproc *mp_swapq; /* queue of procs waiting to be swapped in */
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| 50 | message mp_reply; /* reply message to be sent to one */
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| 51 |
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| 52 | /* Scheduling priority. */
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| 53 | signed int mp_nice; /* nice is PRIO_MIN..PRIO_MAX, standard 0. */
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| 54 |
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| 55 | char mp_name[PROC_NAME_LEN]; /* process name */
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| 56 | } mproc[NR_PROCS];
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| 57 |
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| 58 | /* Flag values */
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| 59 | #define IN_USE 0x001 /* set when 'mproc' slot in use */
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| 60 | #define WAITING 0x002 /* set by WAIT system call */
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| 61 | #define ZOMBIE 0x004 /* set by EXIT, cleared by WAIT */
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| 62 | #define PAUSED 0x008 /* set by PAUSE system call */
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| 63 | #define ALARM_ON 0x010 /* set when SIGALRM timer started */
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| 64 | #define SEPARATE 0x020 /* set if file is separate I & D space */
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| 65 | #define TRACED 0x040 /* set if process is to be traced */
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| 66 | #define STOPPED 0x080 /* set if process stopped for tracing */
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| 67 | #define SIGSUSPENDED 0x100 /* set by SIGSUSPEND system call */
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| 68 | #define REPLY 0x200 /* set if a reply message is pending */
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| 69 | #define ONSWAP 0x400 /* set if data segment is swapped out */
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| 70 | #define SWAPIN 0x800 /* set if on the "swap this in" queue */
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| 71 | #define DONT_SWAP 0x1000 /* never swap out this process */
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| 72 | #define PRIV_PROC 0x2000 /* system process, special privileges */
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| 73 |
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| 74 | #define NIL_MPROC ((struct mproc *) 0)
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| 75 |
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