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Changed to use file descriptors instead of stdio 

CVS patchset: 15
CVS date: 1995/12/12 23:25:31
This commit is contained in:
ewt 1995-12-12 23:25:31 +00:00
parent e55cb95954
commit 2239fa559c
2 changed files with 16 additions and 14 deletions
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26
lib/header.c
View File

@ -4,10 +4,12 @@
*/
#include <asm/byteorder.h>
#include <sys/mman.h>
#include <ctype.h>
#include <string.h>
#include <malloc.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
#include "header.h"
#define INDEX_MALLOC_SIZE 8
@ -37,23 +39,23 @@ struct indexEntry {
/********************************************************************/
void writeHeader(FILE *f, Header h)
void writeHeader(int fd, Header h)
{
int_32 l;
/* First write out the length of the index (count of index entries) */
l = htonl(h->entries_used);
fwrite(&l, sizeof(l), 1, f);
write(fd, &l, sizeof(l));
/* And the length of the data (number of bytes) */
l = htonl(h->data_used);
fwrite(&l, sizeof(l), 1, f);
write(fd, &l, sizeof(l));
/* Now write the index */
fwrite(h->index, sizeof(struct indexEntry), h->entries_used, f);
write(fd, h->index, sizeof(struct indexEntry) * h->entries_used);
/* Finally write the data */
fwrite(h->data, h->data_used, 1, f);
write(fd, h->data, h->data_used);
}
Header mmapHeader(int fd, long offset)
@ -90,7 +92,7 @@ Header mmapHeader(int fd, long offset)
return h;
}
Header readHeader(FILE *f)
Header readHeader(int fd)
{
int_32 il, dl;
@ -98,24 +100,24 @@ Header readHeader(FILE *f)
malloc(sizeof(struct headerToken));
/* First read the index length (count of index entries) */
fread(&il, sizeof(il), 1, f);
read(fd, &il, sizeof(il));
il = ntohl(il);
/* Then read the data length (number of bytes) */
fread(&dl, sizeof(dl), 1, f);
read(fd, &dl, sizeof(dl));
dl = ntohl(dl);
/* Next read the index */
h->index = malloc(il * sizeof(struct indexEntry));
h->entries_malloced = il;
h->entries_used = il;
fread(h->index, sizeof(struct indexEntry), il, f);
read(fd, h->index, sizeof(struct indexEntry) * il);
/* Finally, read the data */
h->data = malloc(dl);
h->data_malloced = dl;
h->data_used = dl;
fread(h->data, dl, 1, f);
read(fd, h->data, dl);
h->mutable = 0;

4
lib/header.h
View File

@ -28,9 +28,9 @@ typedef unsigned int uint_32;
typedef struct headerToken *Header;
/* read and write a header from a file */
Header readHeader(FILE *f);
Header readHeader(int fd);
Header mmapHeader(int fd, long offset);
void writeHeader(FILE *f, Header h);
void writeHeader(int fd, Header h);
/* load and unload a header from a chunk of memory */
Header loadHeader(void *p);