lib/rpmlead.c

   1 #include "system.h"
   2
   3 #if HAVE_MACHINE_TYPES_H
   4 # include <machine/types.h>
   5 #endif
   6
   7 #include <netinet/in.h>
   8
   9 #include "rpmlib.h"
  10
  11 #include "rpmlead.h"
  12
  13 /* The lead needs to be 8 byte aligned */
  14
  15 int writeLead(FD_t fd, struct rpmlead *lead)
  16 {
  17     struct rpmlead l;
  18
  19     memcpy(&l, lead, sizeof(*lead));
  20
  21     l.magic[0] = RPMLEAD_MAGIC0;
  22     l.magic[1] = RPMLEAD_MAGIC1;
  23     l.magic[2] = RPMLEAD_MAGIC2;
  24     l.magic[3] = RPMLEAD_MAGIC3;
  25
  26     l.type = htons(l.type);
  27     l.archnum = htons(l.archnum);
  28     l.osnum = htons(l.osnum);
  29     l.signature_type = htons(l.signature_type);
  30
  31     if (fdWrite(fd, &l, sizeof(l)) < 0) {
  32         return 1;
  33     }
  34
  35     return 0;
  36 }
  37
  38 int readLead(FD_t fd, struct rpmlead *lead)
  39 {
  40     if (timedRead(fd, lead, sizeof(*lead)) != sizeof(*lead)) {
  41         rpmError(RPMERR_READERROR, _("read failed: %s (%d)"), strerror(errno),
  42               errno);
  43         return 1;
  44     }
  45
  46     lead->type = ntohs(lead->type);
  47     lead->archnum = ntohs(lead->archnum);
  48     lead->osnum = ntohs(lead->osnum);
  49
  50     if (lead->major >= 2)
  51         lead->signature_type = ntohs(lead->signature_type);
  52
  53     return 0;
  54 }
  55