linux_emul_base/dat.h

   1 typedef struct Ref Ref;
   2 typedef struct Urestart Urestart;
   3 typedef struct Uproc Uproc;
   4 typedef struct Uproctab Uproctab;
   5 typedef struct Uwaitq Uwaitq;
   6 typedef struct Uwait Uwait;
   7
   8 typedef struct Udev Udev;
   9 typedef struct Ufile Ufile;
  10 typedef struct Ustat Ustat;
  11 typedef struct Udirent Udirent;
  12
  13 typedef struct Ureg Ureg;
  14 typedef struct Usiginfo Usiginfo;
  15
  16 enum {
  17         HZ = 100,
  18         PAGESIZE = 0x1000,
  19
  20         MAXPROC = 128,
  21         MAXFD   = 256,
  22
  23         USTACK  = 8*1024*1024,
  24         KSTACK  = 8*1024,
  25 };
  26
  27 struct Ref
  28 {
  29         long    ref;
  30 };
  31
  32 struct Urestart
  33 {
  34         Urestart                *link;
  35         char                    *syscall;
  36
  37         union {
  38                 struct {
  39                         vlong   timeout;
  40                 }                       nanosleep;
  41                 struct {
  42                         vlong   timeout;
  43                 }                       poll;
  44                 struct {
  45                         vlong   timeout;
  46                 }                       select;
  47                 struct {
  48                         vlong   timeout;
  49                 }                       futex;
  50         };
  51 };
  52
  53 struct Uproc
  54 {
  55         QLock;
  56
  57         int             tid;
  58         int             pid;
  59         int             ppid;
  60         int             pgid;
  61         int             psid;
  62         int             uid;
  63         int             gid;
  64         int             umask;
  65         int             tlsmask;
  66
  67         int             kpid;
  68         int             notefd;
  69         int             argsfd;
  70
  71         int             wstate;
  72         int             wevent;
  73         int             exitcode;
  74         int             exitsignal;
  75
  76         int             *cleartidptr;
  77
  78         vlong   timeout;
  79
  80         vlong   alarm;
  81         Uproc   *alarmq;
  82
  83         char    *state;
  84         char    *xstate;
  85         int             innote;
  86         int             notified;
  87         Ureg            *ureg;
  88         char            *syscall;
  89         void            (*sysret)(int errno);
  90         Urestart        *restart;
  91         Urestart        restart0;
  92         Uwait   *freewait;
  93
  94         void            (*traceproc)(void *arg);
  95         void            *tracearg;
  96
  97         int             linkloop;
  98         char            *root;
  99         char            *cwd;
 100         char            *kcwd;
 101
 102         void            *fdtab;
 103         void            *mem;
 104         void            *trace;
 105         void            *signal;
 106
 107         char            *comm;
 108         int             ncomm;
 109         ulong   codestart;
 110         ulong   codeend;
 111         ulong   stackstart;
 112         vlong   starttime;
 113 };
 114
 115 struct Uproctab
 116 {
 117         QLock;
 118         int             nextpid;
 119         int             alloc;
 120         Uproc   proc[MAXPROC];
 121 };
 122
 123 struct Uwaitq
 124 {
 125         QLock;
 126         Uwait   *w;
 127 };
 128
 129 struct Uwait
 130 {
 131         Uwait   *next;
 132         Uwaitq  *q;
 133         Uwait   *nextq;
 134         Uproc   *proc;
 135         Ufile   *file;
 136 };
 137
 138 enum {
 139         ROOTDEV,
 140         SOCKDEV,
 141         PIPEDEV,
 142         CONSDEV,
 143         MISCDEV,
 144         DSPDEV,
 145         PTYDEV,
 146         PROCDEV,
 147         MAXDEV,
 148 };
 149
 150 /* device */
 151 struct Udev
 152 {
 153         int             (*open)(char *path, int mode, int perm, Ufile **pf);
 154         int             (*access)(char *path, int perm);
 155         int             (*stat)(char *path, int link, Ustat *ps);
 156
 157         int             (*link)(char *old, char *new, int sym);
 158         int             (*unlink)(char *path, int rmdir);
 159         int             (*readlink)(char *path, char *buf, int len);
 160         int             (*rename)(char *old, char *new);
 161         int             (*mkdir)(char *path, int mode);
 162         int             (*utime)(char *path, long atime, long mtime);
 163         int             (*chmod)(char *path, int mode);
 164         int             (*chown)(char *path, int uid, int gid, int link);
 165         int             (*truncate)(char *path, vlong size);
 166
 167         int             (*read)(Ufile *file, void *buf, int len, vlong off);
 168         int             (*write)(Ufile *file, void *buf, int len, vlong off);
 169
 170         vlong   (*size)(Ufile *file);
 171         int             (*poll)(Ufile *file, void *tab);
 172         int             (*ioctl)(Ufile *file, int cmd, void *arg);
 173         int             (*close)(Ufile *file);
 174
 175         int             (*fstat)(Ufile *file, Ustat *ps);
 176         int             (*readdir)(Ufile *file, Udirent **pd);
 177
 178         int             (*fchmod)(Ufile *file, int mode);
 179         int             (*fchown)(Ufile *file, int uid, int gid);
 180         int             (*ftruncate)(Ufile *file, vlong size);
 181 };
 182
 183 struct Ufile
 184 {
 185         Ref;
 186
 187         int             mode;
 188         int             dev;
 189         char            *path;
 190         int             fd;
 191         vlong   off;
 192
 193         Udirent *rdaux; /* aux pointer to hold Udirent* chains */
 194 };
 195
 196 struct Ustat
 197 {
 198         int             mode;
 199         int             uid;
 200         int             gid;
 201         int             dev;
 202         int             rdev;
 203         vlong   size;
 204         ulong   atime;
 205         ulong   mtime;
 206         ulong   ctime;
 207         uvlong  ino;
 208 };
 209
 210 struct Udirent
 211 {
 212         Udirent *next;
 213
 214         uvlong  ino;
 215         int             mode;
 216         char    name[];
 217 };
 218
 219 struct Usiginfo
 220 {
 221         int             signo;
 222         int             errno;
 223         int             code;
 224
 225         union {
 226                 /* kill() */
 227                 struct {
 228                         int     pid;            /* sender's pid */
 229                         int     uid;            /* sender's uid */
 230                 } kill;
 231
 232                 /* POSIX.1b timers */
 233                 struct {
 234                         int     tid;                    /* timer id */
 235                         int     overrun;                /* overrun count */
 236                         int     val;                    /* same as below */
 237                         int     sys_private;    /* not to be passed to user */
 238                 } timer;
 239
 240                 /* POSIX.1b signals */
 241                 struct {
 242                         int     pid;                    /* sender's pid */
 243                         int     uid;                    /* sender's uid */
 244                         int     val;
 245                 } rt;
 246
 247                 /* SIGCHLD */
 248                 struct {
 249                         int     pid;                    /* which child */
 250                         int     uid;                    /* sender's uid */
 251                         int     status;                 /* exit code */
 252                         long    utime;
 253                         long    stime;
 254                 } chld;
 255
 256                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 257                 struct {
 258                         void    *addr;          /* faulting insn/memory ref. */
 259                         int     trapno;         /* TRAP # which caused the signal */
 260                 } fault;
 261
 262                 /* SIGPOLL */
 263                 struct {
 264                         long    band;           /* POLL_IN, POLL_OUT, POLL_MSG */
 265                         int     fd;
 266                 } poll;
 267         };
 268
 269         int             topid;
 270         int             group;
 271 };
 272
 273 int debug;
 274 long *kstack;
 275 long *exitjmp;
 276 Uproc **pcurrent;
 277 #define current (*pcurrent)
 278 vlong boottime;
 279
 280 Udev *devtab[MAXDEV];
 281 Uproctab proctab;