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rpmlead.c

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00001 
00005 #include "system.h"
00006 
00007 #if HAVE_MACHINE_TYPES_H
00008 # include <machine/types.h>
00009 #endif
00010 
00011 #include <netinet/in.h>
00012 
00013 #include <rpmlib.h>
00014 
00015 #include "rpmlead.h"
00016 #include "debug.h"
00017 
00018 /* The lead needs to be 8 byte aligned */
00019 
00020 int writeLead(FD_t fd, const struct rpmlead *lead)
00021 {
00022     struct rpmlead l;
00023 
00024     memcpy(&l, lead, sizeof(*lead));
00025     
00026     l.magic[0] = RPMLEAD_MAGIC0;
00027     l.magic[1] = RPMLEAD_MAGIC1;
00028     l.magic[2] = RPMLEAD_MAGIC2;
00029     l.magic[3] = RPMLEAD_MAGIC3;
00030 
00031     l.type = htons(l.type);
00032     l.archnum = htons(l.archnum);
00033     l.osnum = htons(l.osnum);
00034     l.signature_type = htons(l.signature_type);
00035         
00036     /*@-sizeoftype@*/
00037     if (Fwrite(&l, sizeof(char), sizeof(l), fd) != sizeof(l)) {
00038         return 1;
00039     }
00040     /*@=sizeoftype@*/
00041 
00042     return 0;
00043 }
00044 
00045 int readLead(FD_t fd, struct rpmlead *lead)
00046 {
00047     memset(lead, 0, sizeof(*lead));
00048     /*@-type@*/ /* FIX: remove timed read */
00049     if (timedRead(fd, (char *)lead, sizeof(*lead)) != sizeof(*lead)) {
00050         rpmError(RPMERR_READ, _("read failed: %s (%d)\n"), Fstrerror(fd), 
00051               errno);
00052         return 1;
00053     }
00054     /*@=type@*/
00055 
00056     lead->type = ntohs(lead->type);
00057     lead->archnum = ntohs(lead->archnum);
00058     lead->osnum = ntohs(lead->osnum);
00059 
00060     if (lead->major >= 2)
00061         lead->signature_type = ntohs(lead->signature_type);
00062 
00063     return 0;
00064 }

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