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Annotation of 3BSD/sys/h/user.h, revision 1.1

1.1     ! root        1: /*     user.h  2.1     1/5/80  */
        !             2: 
        !             3: #ifdef KERNEL
        !             4: #include "../h/pcb.h"
        !             5: #include "../h/dmap.h"
        !             6: #else
        !             7: #include <sys/pcb.h>
        !             8: #include <sys/dmap.h>
        !             9: #endif
        !            10: /*
        !            11:  * The user structure.
        !            12:  * One allocated per process.
        !            13:  * Contains all per process data
        !            14:  * that doesn't need to be referenced
        !            15:  * while the process is swapped.
        !            16:  * The user block is UPAGES*512 bytes
        !            17:  * long; resides at virtual kernel
        !            18:  * loc 80040000; contains the system
        !            19:  * stack per user; is cross referenced
        !            20:  * with the proc structure for the
        !            21:  * same process.
        !            22:  */
        !            23:  
        !            24: #define        EXCLOSE 01
        !            25:  
        !            26: struct user
        !            27: {
        !            28:        struct  pcb u_pcb;              /* pcb, save area when exchanging stacks */
        !            29:        label_t u_rsav;
        !            30:        char    u_segflg;               /* IO flag: 0:user D; 1:system; 2:user I */
        !            31:        char    u_error;                /* return error code */
        !            32:        short   u_uid;                  /* effective user id */
        !            33:        short   u_gid;                  /* effective group id */
        !            34:        short   u_ruid;                 /* real user id */
        !            35:        short   u_rgid;                 /* real group id */
        !            36:        struct  proc *u_procp;          /* pointer to proc structure */
        !            37:        int     *u_ap;                  /* pointer to arglist */
        !            38:        union {                         /* syscall return values */
        !            39:                struct  {
        !            40:                        int     r_val1;
        !            41:                        int     r_val2;
        !            42:                };
        !            43:                off_t   r_off;
        !            44:                time_t  r_time;
        !            45:        } u_r;
        !            46:        caddr_t u_base;                 /* base address for IO */
        !            47:        unsigned int u_count;           /* bytes remaining for IO */
        !            48:        off_t   u_offset;               /* offset in file for IO */
        !            49:        struct  inode *u_cdir;          /* pointer to inode of current directory */
        !            50:        struct  inode *u_rdir;          /* root directory of current process */
        !            51:        char    u_dbuf[DIRSIZ];         /* current pathname component */
        !            52:        caddr_t u_dirp;                 /* pathname pointer */
        !            53:        struct  direct u_dent;          /* current directory entry */
        !            54:        struct  inode *u_pdir;          /* inode of parent directory of dirp */
        !            55:        struct  file *u_ofile[NOFILE];  /* pointers to file structures of open files */
        !            56:        char    u_pofile[NOFILE];       /* per-process flags of open files */
        !            57:        int     u_arg[5];               /* arguments to current system call */
        !            58:        label_t u_qsav;                 /* label variable for quits and interrupts */
        !            59:        label_t u_ssav;                 /* label variable for swapping */
        !            60:        int     u_signal[NSIG];         /* disposition of signals */
        !            61:        time_t  u_utime;                /* this process user time */
        !            62:        time_t  u_stime;                /* this process system time */
        !            63:        time_t  u_cutime;               /* sum of childs' utimes */
        !            64:        time_t  u_cstime;               /* sum of childs' stimes */
        !            65:        int     *u_ar0;                 /* address of users saved R0 */
        !            66:        struct uprof {                  /* profile arguments */
        !            67:                short   *pr_base;       /* buffer base */
        !            68:                unsigned pr_size;       /* buffer size */
        !            69:                unsigned pr_off;        /* pc offset */
        !            70:                unsigned pr_scale;      /* pc scaling */
        !            71:        } u_prof;
        !            72:        char    u_intflg;               /* catch intr from sys */
        !            73:        char    u_sep;                  /* flag for I and D separation */
        !            74:        struct  tty *u_ttyp;            /* controlling tty pointer */
        !            75:        dev_t   u_ttyd;                 /* controlling tty dev */
        !            76:        struct {                        /* header of executable file */
        !            77:                int     ux_mag;         /* magic number */
        !            78:                unsigned ux_tsize;      /* text size */
        !            79:                unsigned ux_dsize;      /* data size */
        !            80:                unsigned ux_bsize;      /* bss size */
        !            81:                unsigned ux_ssize;      /* symbol table size */
        !            82:                unsigned ux_entloc;     /* entry location */
        !            83:                unsigned ux_unused;
        !            84:                unsigned ux_relflg;
        !            85:        } u_exdata;
        !            86:        char    u_comm[DIRSIZ];
        !            87:        time_t  u_start;
        !            88:        char    u_acflag;
        !            89:        short   u_fpflag;               /* unused now, will be later */
        !            90:        short   u_cmask;                /* mask for file creation */
        !            91:        size_t  u_tsize;                /* text size (clicks) */
        !            92:        size_t  u_dsize;                /* data size (clicks) */
        !            93:        size_t  u_ssize;                /* stack size (clicks) */
        !            94:        int     u_nswap;                /* no times swapped */
        !            95:        int     u_majorflt;             /* number of major faults */
        !            96:        int     u_cnswap;               /* no times children swapped */
        !            97:        int     u_cmajorflt;            /* no major faults in child */
        !            98:        int     u_averss;               /* time average of resident set size */
        !            99:        int     u_minorflt;             /* number of minor faults */
        !           100:        struct  dmap u_dmap;            /* disk map for data segment */
        !           101:        struct  dmap u_smap;            /* disk map for stack segment */
        !           102:        struct  dmap u_cdmap, u_csmap;  /* shadows of u_dmap, u_smap, for
        !           103:                                           use of parent during fork */
        !           104:        int     u_ustklim;              /* max stack growth */
        !           105:        char    u_uwantcore;            /* dump core even if large */
        !           106:        time_t  u_outime;               /* user time at last sample */
        !           107:        size_t  u_odsize;
        !           108:        size_t  u_ossize;
        !           109:        size_t  u_vrpages[NOFILE];      /* number vread pages hanging on fd */
        !           110:        int     u_stack[1];
        !           111: 
        !           112:                                        /*
        !           113:                                         * kernel stack per user
        !           114:                                         * extends from u + UPAGES*512
        !           115:                                         * backward not to reach here
        !           116:                                         */
        !           117: };
        !           118: 
        !           119: /* u_error codes */
        !           120: #define        EPERM   1
        !           121: #define        ENOENT  2
        !           122: #define        ESRCH   3
        !           123: #define        EINTR   4
        !           124: #define        EIO     5
        !           125: #define        ENXIO   6
        !           126: #define        E2BIG   7
        !           127: #define        ENOEXEC 8
        !           128: #define        EBADF   9
        !           129: #define        ECHILD  10
        !           130: #define        EAGAIN  11
        !           131: #define        ENOMEM  12
        !           132: #define        EACCES  13
        !           133: #define        EFAULT  14
        !           134: #define        ENOTBLK 15
        !           135: #define        EBUSY   16
        !           136: #define        EEXIST  17
        !           137: #define        EXDEV   18
        !           138: #define        ENODEV  19
        !           139: #define        ENOTDIR 20
        !           140: #define        EISDIR  21
        !           141: #define        EINVAL  22
        !           142: #define        ENFILE  23
        !           143: #define        EMFILE  24
        !           144: #define        ENOTTY  25
        !           145: #define        ETXTBSY 26
        !           146: #define        EFBIG   27
        !           147: #define        ENOSPC  28
        !           148: #define        ESPIPE  29
        !           149: #define        EROFS   30
        !           150: #define        EMLINK  31
        !           151: #define        EPIPE   32
        !           152: #define        EDOM    33
        !           153: #define        ERANGE  34
        !           154: 
        !           155: #ifdef KERNEL
        !           156: extern struct user u;
        !           157: extern struct user swaputl;
        !           158: extern struct user forkutl;
        !           159: extern struct user xswaputl;
        !           160: extern struct user xswap2utl;
        !           161: extern struct user pushutl;
        !           162: extern struct user vfutl;
        !           163: #endif

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