com32/lib/opendir.c

   1 /*
   2  * opendir.c
   3  */
   4
   5 #include <dirent.h>
   6 #include <stdio.h>
   7 #include <errno.h>
   8
   9 #include <com32.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include <fcntl.h>
  13 #include <stdlib.h>
  14
  15 DIR *opendir(const char *pathname)
  16 {
  17     DIR *newdir;
  18     com32sys_t regs;
  19
  20     newdir = NULL;
  21
  22     strlcpy(__com32.cs_bounce, pathname, __com32.cs_bounce_size);
  23
  24     regs.eax.w[0] = 0x0020;
  25     regs.esi.w[0] = OFFS(__com32.cs_bounce);
  26     regs.es = SEG(__com32.cs_bounce);
  27
  28     __com32.cs_intcall(0x22, &regs, &regs);
  29
  30     if (!(regs.eflags.l & EFLAGS_CF)) {
  31         /* Initialization: malloc() then zero */
  32         newdir = calloc(1, sizeof(DIR));
  33         strcpy(newdir->dd_name, pathname);
  34         newdir->dd_fd = regs.esi.w[0];
  35         newdir->dd_sect = regs.eax.l;
  36         newdir->dd_stat = 0;
  37     }
  38
  39     /* We're done */
  40     return newdir;
  41 }