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42 lines
729 B
C
42 lines
729 B
C
#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/disklabel.h>
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#include <errno.h>
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#include <inttypes.h>
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#include "tapdisk.h"
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#include "blk.h"
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int blk_getimagesize(int fd, uint64_t *size)
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{
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int rc;
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struct disklabel dl;
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*size = 0;
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rc = ioctl(fd, DIOCGDINFO, &dl);
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if (rc) {
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DPRINTF("ERR: DIOCGDINFO failed, couldn't stat image");
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return -EINVAL;
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}
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*size = dl.d_secsize * dl.d_secpercyl;
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return 0;
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}
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int blk_getsectorsize(int fd, uint64_t *sector_size)
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{
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int rc;
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struct disklabel dl;
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*sector_size = DEV_BSIZE;
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rc = ioctl(fd, DIOCGDINFO, &dl);
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if (rc) {
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DPRINTF("ERR: DIOCGDINFO failed, couldn't stat image");
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return 0; /* fallback to DEV_BSIZE */
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}
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*sector_size = dl.d_secsize;
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return 0;
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}
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