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Red Hat Bugzilla – Attachment 188861 Details for
Bug 253803
mkqdisk cannot use device with 4kb sector size
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ioctl debugging program to grab sector / block sizes
itest.c (text/plain), 617 bytes, created by
Lon Hohberger
on 2007-09-06 15:13:35 UTC
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Description:
ioctl debugging program to grab sector / block sizes
Filename:
MIME Type:
Creator:
Lon Hohberger
Created:
2007-09-06 15:13:35 UTC
Size:
617 bytes
patch
obsolete
>#include <sys/ioctl.h> >#include <linux/fs.h> >#include <stdio.h> >#include <unistd.h> >#include <fcntl.h> > >int >main(int argc, char **argv) >{ > int fd; > unsigned long ssz; > size_t bsz; > > if (argc < 2) { > printf("Usage: %s <device>\n", argv[0]); > return -1; > } > > fd = open(argv[1], O_RDONLY); > > if (fd < 0) { > perror("open"); > return -1; > } > > ssz = 0; > if (ioctl(fd, BLKSSZGET, &ssz) < 0) { > perror("ioctl1"); > return -1; > } > > bsz = 0; > if (ioctl(fd, BLKBSZGET, &bsz) < 0) { > perror("ioctl2"); > return -1; > } > > close(fd); > > printf("BLKSSZGET = %d\n", (int)ssz); > printf("BLKBSZGET = %d\n", (int)bsz); > > return 0; >}
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