lib/rpmlead.c

   1 /** \ingroup lead
   2  * \file lib/rpmlead.c
   3  */
   4
   5 #include "system.h"
   6
   7 #if HAVE_MACHINE_TYPES_H
   8 # include <machine/types.h>
   9 #endif
  10
  11 #ifdef  __LCLINT__
  12 #define ntohl(_x)       (_x)
  13 #define ntohs(_x)       (_x)
  14 #define htonl(_x)       (_x)
  15 #define htons(_x)       (_x)
  16 #else
  17 #include <netinet/in.h>
  18 #endif  /* __LCLINT__ */
  19
  20 #include <rpmlib.h>
  21
  22 #include "rpmlead.h"
  23
  24 /* The lead needs to be 8 byte aligned */
  25
  26 int writeLead(FD_t fd, struct rpmlead *lead)
  27 {
  28     struct rpmlead l;
  29
  30     memcpy(&l, lead, sizeof(*lead));
  31
  32     l.magic[0] = RPMLEAD_MAGIC0;
  33     l.magic[1] = RPMLEAD_MAGIC1;
  34     l.magic[2] = RPMLEAD_MAGIC2;
  35     l.magic[3] = RPMLEAD_MAGIC3;
  36
  37     l.type = htons(l.type);
  38     l.archnum = htons(l.archnum);
  39     l.osnum = htons(l.osnum);
  40     l.signature_type = htons(l.signature_type);
  41
  42     if (Fwrite(&l, sizeof(char), sizeof(l), fd) < 0) {
  43         return 1;
  44     }
  45
  46     return 0;
  47 }
  48
  49 int readLead(FD_t fd, struct rpmlead *lead)
  50 {
  51     if (timedRead(fd, (char *)lead, sizeof(*lead)) != sizeof(*lead)) {
  52         rpmError(RPMERR_READ, _("read failed: %s (%d)"), Fstrerror(fd),
  53               errno);
  54         return 1;
  55     }
  56
  57     lead->type = ntohs(lead->type);
  58     lead->archnum = ntohs(lead->archnum);
  59     lead->osnum = ntohs(lead->osnum);
  60
  61     if (lead->major >= 2)
  62         lead->signature_type = ntohs(lead->signature_type);
  63
  64     return 0;
  65 }