lib/rpmlead.c

   1 #include <netinet/in.h>
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <unistd.h>
   5
   6 #include "rpmerr.h"
   7 #include "rpmlead.h"
   8
   9 int writeLead(int fd, struct rpmlead *lead)
  10 {
  11     struct rpmlead l;
  12
  13     memcpy(&l, lead, sizeof(*lead));
  14
  15     l.magic[0] = RPMLEAD_MAGIC0;
  16     l.magic[1] = RPMLEAD_MAGIC1;
  17     l.magic[2] = RPMLEAD_MAGIC2;
  18     l.magic[3] = RPMLEAD_MAGIC3;
  19
  20     l.type = htons(l.type);
  21     l.archnum = htons(l.archnum);
  22     l.osnum = htons(l.osnum);
  23     l.signature_type = htons(l.signature_type);
  24
  25     write(fd, &l, sizeof(l));
  26
  27     return 0;
  28 }
  29
  30 int readLead(int fd, struct rpmlead *lead)
  31 {
  32     if (read(fd, lead, sizeof(*lead)) != sizeof(*lead)) {
  33         error(RPMERR_READERROR, "read failed: %s (%d)", strerror(errno),
  34               errno);
  35         return 1;
  36     }
  37
  38     lead->type = ntohs(lead->type);
  39     lead->archnum = ntohs(lead->archnum);
  40     lead->osnum = ntohs(lead->osnum);
  41
  42     if (lead->major >= 2)
  43         lead->signature_type = ntohs(lead->signature_type);
  44
  45     return 0;
  46 }
  47