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Annotation of 42BSD/sys/h/user.h, revision 1.1

1.1     ! root        1: /*     user.h  6.1     83/07/29        */
        !             2: 
        !             3: #ifdef KERNEL
        !             4: #include "../machine/pcb.h"
        !             5: #include "../h/dmap.h"
        !             6: #include "../h/time.h"
        !             7: #include "../h/resource.h"
        !             8: #else
        !             9: #include <machine/pcb.h>
        !            10: #include <sys/dmap.h>
        !            11: #include <sys/time.h>
        !            12: #include <sys/resource.h>
        !            13: #endif
        !            14: 
        !            15: /*
        !            16:  * Per process structure containing data that
        !            17:  * isn't needed in core when the process is swapped out.
        !            18:  */
        !            19:  
        !            20: #define        SHSIZE          32
        !            21: #define        MAXCOMLEN       16              /* <= MAXNAMLEN, >= sizeof(a_comm) */
        !            22:  
        !            23: struct user {
        !            24:        struct  pcb u_pcb;
        !            25:        struct  proc *u_procp;          /* pointer to proc structure */
        !            26:        int     *u_ar0;                 /* address of users saved R0 */
        !            27:        char    u_comm[MAXNAMLEN + 1];
        !            28: 
        !            29: /* syscall parameters, results and catches */
        !            30:        int     u_arg[8];               /* arguments to current system call */
        !            31:        int     *u_ap;                  /* pointer to arglist */
        !            32:        label_t u_qsave;                /* for non-local gotos on interrupts */
        !            33:        char    u_error;                /* return error code */
        !            34:        union {                         /* syscall return values */
        !            35:                struct  {
        !            36:                        int     R_val1;
        !            37:                        int     R_val2;
        !            38:                } u_rv;
        !            39: #define        r_val1  u_rv.R_val1
        !            40: #define        r_val2  u_rv.R_val2
        !            41:                off_t   r_off;
        !            42:                time_t  r_time;
        !            43:        } u_r;
        !            44:        char    u_eosys;                /* special action on end of syscall */
        !            45: 
        !            46: /* 1.1 - processes and protection */
        !            47:        short   u_uid;                  /* effective user id */
        !            48:        short   u_gid;                  /* effective group id */
        !            49:        int     u_groups[NGROUPS];      /* groups, 0 terminated */
        !            50:        short   u_ruid;                 /* real user id */
        !            51:        short   u_rgid;                 /* real group id */
        !            52: 
        !            53: /* 1.2 - memory management */
        !            54:        size_t  u_tsize;                /* text size (clicks) */
        !            55:        size_t  u_dsize;                /* data size (clicks) */
        !            56:        size_t  u_ssize;                /* stack size (clicks) */
        !            57:        struct  dmap u_dmap;            /* disk map for data segment */
        !            58:        struct  dmap u_smap;            /* disk map for stack segment */
        !            59:        struct  dmap u_cdmap, u_csmap;  /* shadows of u_dmap, u_smap, for
        !            60:                                           use of parent during fork */
        !            61:        label_t u_ssave;                /* label variable for swapping */
        !            62:        size_t  u_odsize, u_ossize;     /* for (clumsy) expansion swaps */
        !            63:        time_t  u_outime;               /* user time at last sample */
        !            64: 
        !            65: /* 1.3 - signal management */
        !            66:        int     (*u_signal[NSIG])();    /* disposition of signals */
        !            67:        int     u_sigmask[NSIG];        /* signals to be blocked */
        !            68:        int     u_sigonstack;           /* signals to take on sigstack */
        !            69:        int     u_oldmask;              /* saved mask from before sigpause */
        !            70:        int     u_code;                 /* ``code'' to trap */
        !            71:        struct  sigstack u_sigstack;    /* sp & on stack state variable */
        !            72: #define        u_onstack       u_sigstack.ss_onstack
        !            73: #define        u_sigsp         u_sigstack.ss_sp
        !            74: 
        !            75: /* 1.4 - descriptor management */
        !            76:        struct  file *u_ofile[NOFILE];  /* file structures for open files */
        !            77:        char    u_pofile[NOFILE];       /* per-process flags of open files */
        !            78: #define        UF_EXCLOSE      0x1             /* auto-close on exec */
        !            79: #define        UF_MAPPED       0x2             /* mapped from device */
        !            80:        struct  inode *u_cdir;          /* current directory */
        !            81:        struct  inode *u_rdir;          /* root directory of current process */
        !            82:        struct  tty *u_ttyp;            /* controlling tty pointer */
        !            83:        dev_t   u_ttyd;                 /* controlling tty dev */
        !            84:        short   u_cmask;                /* mask for file creation */
        !            85: 
        !            86: /* 1.5 - timing and statistics */
        !            87:        struct  rusage u_ru;            /* stats for this proc */
        !            88:        struct  rusage u_cru;           /* sum of stats for reaped children */
        !            89:        struct  itimerval u_timer[3];
        !            90:        int     u_XXX[3];
        !            91:        time_t  u_start;
        !            92:        short   u_acflag;
        !            93: 
        !            94: /* 1.6 - resource controls */
        !            95:        struct  rlimit u_rlimit[RLIM_NLIMITS];
        !            96:        struct  quota *u_quota;         /* user's quota structure */
        !            97:        int     u_qflags;               /* per process quota flags */
        !            98: 
        !            99: /* BEGIN TRASH */
        !           100:        char    u_segflg;               /* 0:user D; 1:system; 2:user I */
        !           101:        caddr_t u_base;                 /* base address for IO */
        !           102:        unsigned int u_count;           /* bytes remaining for IO */
        !           103:        off_t   u_offset;               /* offset in file for IO */
        !           104:        union {
        !           105:           struct {                     /* header of executable file */
        !           106:                int     Ux_mag;         /* magic number */
        !           107:                unsigned Ux_tsize;      /* text size */
        !           108:                unsigned Ux_dsize;      /* data size */
        !           109:                unsigned Ux_bsize;      /* bss size */
        !           110:                unsigned Ux_ssize;      /* symbol table size */
        !           111:                unsigned Ux_entloc;     /* entry location */
        !           112:                unsigned Ux_unused;
        !           113:                unsigned Ux_relflg;
        !           114:           } Ux_A;
        !           115:           char ux_shell[SHSIZE];       /* #! and name of interpreter */
        !           116:        } u_exdata;
        !           117: #define        ux_mag          Ux_A.Ux_mag
        !           118: #define        ux_tsize        Ux_A.Ux_tsize
        !           119: #define        ux_dsize        Ux_A.Ux_dsize
        !           120: #define        ux_bsize        Ux_A.Ux_bsize
        !           121: #define        ux_ssize        Ux_A.Ux_ssize
        !           122: #define        ux_entloc       Ux_A.Ux_entloc
        !           123: #define        ux_unused       Ux_A.Ux_unused
        !           124: #define        ux_relflg       Ux_A.Ux_relflg
        !           125:        caddr_t u_dirp;                 /* pathname pointer */
        !           126:        struct  direct u_dent;          /* current directory entry */
        !           127:        struct  inode *u_pdir;          /* inode of parent directory of dirp */
        !           128: /* END TRASH */
        !           129:        struct uprof {                  /* profile arguments */
        !           130:                short   *pr_base;       /* buffer base */
        !           131:                unsigned pr_size;       /* buffer size */
        !           132:                unsigned pr_off;        /* pc offset */
        !           133:                unsigned pr_scale;      /* pc scaling */
        !           134:        } u_prof;
        !           135:        int     u_stack[1];
        !           136: };
        !           137: 
        !           138: /* u_eosys values */
        !           139: #define        JUSTRETURN      0
        !           140: #define        RESTARTSYS      1
        !           141: #define        SIMULATERTI     2
        !           142: #define        REALLYRETURN    3
        !           143: 
        !           144: /* u_error codes */
        !           145: #include <errno.h>
        !           146: 
        !           147: #ifdef KERNEL
        !           148: extern struct user u;
        !           149: extern struct user swaputl;
        !           150: extern struct user forkutl;
        !           151: extern struct user xswaputl;
        !           152: extern struct user xswap2utl;
        !           153: extern struct user pushutl;
        !           154: extern struct user vfutl;
        !           155: #endif

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