lib/rpmlead.c

   1 #include <netinet/in.h>
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <unistd.h>
   5 #include <string.h>
   6 #include <errno.h>
   7
   8 #include "rpmerr.h"
   9 #include "rpmlead.h"
  10
  11 int writeLead(int fd, struct rpmlead *lead)
  12 {
  13     struct rpmlead l;
  14
  15     memcpy(&l, lead, sizeof(*lead));
  16
  17     l.magic[0] = RPMLEAD_MAGIC0;
  18     l.magic[1] = RPMLEAD_MAGIC1;
  19     l.magic[2] = RPMLEAD_MAGIC2;
  20     l.magic[3] = RPMLEAD_MAGIC3;
  21
  22     l.type = htons(l.type);
  23     l.archnum = htons(l.archnum);
  24     l.osnum = htons(l.osnum);
  25     l.signature_type = htons(l.signature_type);
  26
  27     write(fd, &l, sizeof(l));
  28
  29     return 0;
  30 }
  31
  32 int readLead(int fd, struct rpmlead *lead)
  33 {
  34     if (read(fd, lead, sizeof(*lead)) != sizeof(*lead)) {
  35         error(RPMERR_READERROR, "read failed: %s (%d)", strerror(errno),
  36               errno);
  37         return 1;
  38     }
  39
  40     lead->type = ntohs(lead->type);
  41     lead->archnum = ntohs(lead->archnum);
  42     lead->osnum = ntohs(lead->osnum);
  43
  44     if (lead->major >= 2)
  45         lead->signature_type = ntohs(lead->signature_type);
  46
  47     return 0;
  48 }
  49