primos/primos.c

   1 /*
   2 ** primos.c
   3 **
   4 ** This file contains emulation routines for some common Unix functions
   5 **
   6 ** Author: Peter Eriksson <pen@lysator.liu.se>
   7 */
   8
   9 #ifdef __50SERIES
  10
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <sys/stat.h>
  14
  15
  16 uid_t  primos_uid = 42;
  17 gid_t  primos_gid = 42;
  18 mode_t primos_mode = 600;
  19
  20 /* Dummy do-nothing routine for chmod() */
  21 int chmod(path, mode)
  22   char *path;
  23   int mode;
  24 {
  25    return 0;
  26 }
  27
  28 char *getenv(var)
  29   char *var;
  30 {
  31   char buf[256];
  32   extern char *gvget();
  33
  34   buf[0] = '.';
  35   strcpy(buf+1, var);
  36
  37   return gvget(buf);
  38 }
  39
  40
  41 unlink(path)
  42   char *path;
  43 {
  44   return delete(path);
  45 }
  46
  47 int lstat(path, buf)
  48   char *path;
  49   struct stat *buf;
  50 {
  51   return stat(path, buf);
  52 }
  53
  54 int stat(path, buf)
  55   char *path;
  56   struct stat *buf;
  57 {
  58   buf->st_dev     = 1;
  59   buf->st_ino     = 1;
  60   buf->st_nlink   = 1;
  61   buf->st_uid     = primos_uid;
  62   buf->st_gid     = primos_gid;
  63   buf->st_rdev    = 1;
  64   buf->st_blksize = 2048;
  65
  66   buf->st_rwlock = frwlock(path);
  67   switch (buf->st_type = ftype(path))
  68   {
  69     case 0:
  70     case 1:
  71       /* Regular file (SAM or DAM) */
  72       buf->st_size   = fsize(path);
  73       buf->st_mtime  = fdtm(path);
  74
  75       buf->st_mode = S_IFREG|primos_mode;
  76       break;
  77
  78     case 4:
  79       buf->st_size = 0;
  80       buf->st_mtime = fdtm(path);
  81
  82       buf->st_mode = S_IFDIR|primos_mode;
  83       break;
  84
  85     case -1:
  86       return -1;
  87
  88     default:
  89       buf->st_mode = primos_mode;
  90       buf->st_size = fsize(path);
  91       buf->st_mtime = fdtm(path);
  92   }
  93
  94   buf->st_blocks = (buf->st_size-1) / buf->st_blksize + 1;
  95
  96   /* Should be fixed to really fetch these values, but that
  97    * would require calling some PRIMOS subroutines and I don't have
  98    * a copy of the Primos Subroutine reference manuals here..
  99    */
 100   buf->st_atime = buf->st_mtime;
 101   buf->st_ctime = buf->st_mtime;
 102
 103   return 0;
 104 }
 105
 106 int fstat(fd, buf)
 107   int fd;
 108   struct stat *buf;
 109 {
 110   char path[1025];
 111
 112   return stat(getname(fd, path), buf);
 113 }
 114
 115 int ascii2pascii(c)
 116   int c;
 117 {
 118   return (c ? (c | 0x80) : '\0');
 119 }
 120
 121
 122 #endif /* __50SERIES */