Usermode/Applications/cat_src/main.c

   1 /*
   2  * Acess2 CAT command
   3  */
   4 #include <acess/sys.h>
   5 #include <stdlib.h>
   6 #include <stdio.h>
   7
   8 #define BUF_SIZE        1024
   9
  10 int main(int argc, char *argv[])
  11 {
  12          int    fd;
  13          int    num;
  14         char    buf[BUF_SIZE+1];
  15
  16         if(argc < 2) {
  17                 printf("Usage: cat <file>\n");
  18                 return -1;
  19         }
  20
  21         fd = open(argv[1], OPENFLAG_READ);
  22         if(fd == -1) {
  23                 printf("Unable to open '%s' for reading\n", argv[1]);
  24                 return -1;
  25         }
  26
  27         do {
  28                 num = read(fd, BUF_SIZE, buf);
  29                 printf("num = %i\n", num);
  30                 buf[num] = '\0';
  31                 printf("%s", buf);
  32         } while(num == BUF_SIZE);
  33
  34         close(fd);
  35         printf("\n");
  36
  37         return 0;
  38 }