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diskimg.c
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diskimg.c
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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdint.h>
#include <stdbool.h>
#include <inttypes.h>
#include <pthread.h>
#include <assert.h>
#include "diskimg.h"
#include "disksim.h"
#include "debug.h"
static uint64_t numreads, numwrites;
/* Open a disk image for I/O. Returns an open file descriptor, or -1 if
* unsuccessful */
int
diskimg_open (char *pathname, int readOnly)
{
return disksim_open(pathname, readOnly);
}
/*
* Return the size of the disk image in bytes, or -1 if unsuccessful.
*/
int
diskimg_getsize(int fd)
{
return disksim_getsize(fd);
}
/*
* Read the specified sector from the disk. Return number of bytes read, or -1
* on error.
*/
int
diskimg_readsector(int fd, int sectorNum, void *buf)
{
numreads++;
return disksim_readsector(fd, sectorNum, buf);
}
/*
* Write the specified sector to the disk. Return number of bytes written,
* -1 on error.
*/
int diskimg_writesector(int fd, int sectorNum, void *buf)
{
numwrites++;
return disksim_writesector(fd, sectorNum, buf);
}
/*
* Clean up from a previous diskimg_open() call. Returns 0 on success, -1 on
* error
*/
int
diskimg_close(int fd)
{
return disksim_close(fd);
}
void
diskimg_dumpstats(FILE *file)
{
fprintf(file, "Diskimg: %"PRIu64" reads, %"PRIu64" writes\n",
numreads, numwrites);
}