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fd.c

#include "config.h"

#include "headers.h"
#include "types.h"
#include "error.h"
#include "fd.h"

int set_fl(int fd, int flags)
{
      int val;

      if ((val = fcntl(fd, F_GETFL, 0)) < 0) {
            print_error(stderr, "fcntl() failed");
            return(1);
      }
      val |= flags;
      if (fcntl(fd, F_SETFL, val) < 0) {
            print_error(stderr, "fcntl() failed");
            return(1);
      }
      return(0);
}

int clr_fl(int fd, int flags)
{
      int val;

      if ((val = fcntl(fd, F_GETFL, 0)) < 0) {
            print_error(stderr, "fcntl() failed");
            return(1);
      }
      val &= ~flags;
      if (fcntl(fd, F_SETFL, val) < 0) {
            print_error(stderr, "fcntl() failed");
            return(1);
      }
      return(0);
}

int fdBegin(int fd)
{
      return(set_fl(fd, O_NONBLOCK));
}

int fdEnd(int fd)
{
      return(clr_fl(fd, O_NONBLOCK));
}

int fdIsFile(int fd)
{
      struct stat st;

      if (fstat(fd, &st) != 0) {
            print_error(stderr, "fstat() failed");
            return(0);
      }
      if (S_ISREG(st.st_mode)) return(1);
      return(0);
}

int fdFileSize(int fd, uint64 *size)
{
      struct stat st;

      if (size == 0) {
            print_error(stderr, "size == NULL");
            return(1);
      }
      if (fstat(fd, &st) != 0) {
            print_error(stderr, "fstat() failed");
            return(1);
      }
      *size = (uint64)st.st_size;
      return(0);
}


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