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authorbigbiff <bigbiff@teamw.in>2015-01-02 01:44:14 +0100
committerDees Troy <dees_troy@teamw.in>2015-01-05 04:38:42 +0100
commit7b4c7a681cc4c0a53dc8a8baf4853e921cfbf5de (patch)
treefb69cb515cb4ab675d5850684cc402100b7a2a22 /libblkid/blkdev.c
parentcrypto: remove unused libs and clean up makefile (diff)
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Diffstat (limited to '')
-rw-r--r--libblkid/blkdev.c375
1 files changed, 0 insertions, 375 deletions
diff --git a/libblkid/blkdev.c b/libblkid/blkdev.c
deleted file mode 100644
index 514082e34..000000000
--- a/libblkid/blkdev.c
+++ /dev/null
@@ -1,375 +0,0 @@
-/*
- * No copyright is claimed. This code is in the public domain; do with
- * it what you wish.
- *
- * Written by Karel Zak <kzak@redhat.com>
- */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-#include <stdint.h>
-
-#ifdef HAVE_LINUX_FD_H
-#include <linux/fd.h>
-#endif
-
-#ifdef HAVE_SYS_DISKLABEL_H
-#include <sys/disklabel.h>
-#endif
-
-#ifdef HAVE_SYS_DISK_H
-#ifdef HAVE_SYS_QUEUE_H
-#include <sys/queue.h> /* for LIST_HEAD */
-#endif
-#include <sys/disk.h>
-#endif
-
-#include "blkdev.h"
-#include "c.h"
-#include "linux_version.h"
-#include "xalloc.h"
-
-static long
-blkdev_valid_offset (int fd, off_t offset) {
- char ch;
-
- if (lseek (fd, offset, 0) < 0)
- return 0;
- if (read (fd, &ch, 1) < 1)
- return 0;
- return 1;
-}
-
-int is_blkdev(int fd)
-{
- struct stat st;
- return (fstat(fd, &st) == 0 && S_ISBLK(st.st_mode));
-}
-
-off_t
-blkdev_find_size (int fd) {
- uintmax_t high, low = 0;
-
- for (high = 1024; blkdev_valid_offset (fd, high); ) {
- if (high == UINTMAX_MAX)
- return -1;
-
- low = high;
-
- if (high >= UINTMAX_MAX/2)
- high = UINTMAX_MAX;
- else
- high *= 2;
- }
-
- while (low < high - 1)
- {
- uintmax_t mid = (low + high) / 2;
-
- if (blkdev_valid_offset (fd, mid))
- low = mid;
- else
- high = mid;
- }
- blkdev_valid_offset (fd, 0);
- return (low + 1);
-}
-
-/* get size in bytes */
-int
-blkdev_get_size(int fd, unsigned long long *bytes)
-{
-#ifdef DKIOCGETBLOCKCOUNT
- /* Apple Darwin */
- if (ioctl(fd, DKIOCGETBLOCKCOUNT, bytes) >= 0) {
- *bytes <<= 9;
- return 0;
- }
-#endif
-
-#ifdef BLKGETSIZE64
- {
-#ifdef __linux__
- int ver = get_linux_version();
-
- /* kernels 2.4.15-2.4.17, had a broken BLKGETSIZE64 */
- if (ver >= KERNEL_VERSION (2,6,0) ||
- (ver >= KERNEL_VERSION (2,4,18) && ver < KERNEL_VERSION (2,5,0)))
-#endif
- if (ioctl(fd, BLKGETSIZE64, bytes) >= 0)
- return 0;
- }
-#endif /* BLKGETSIZE64 */
-
-#ifdef BLKGETSIZE
- {
- unsigned long size;
-
- if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
- *bytes = ((unsigned long long)size << 9);
- return 0;
- }
- }
-
-#endif /* BLKGETSIZE */
-
-#ifdef DIOCGMEDIASIZE
- /* FreeBSD */
- if (ioctl(fd, DIOCGMEDIASIZE, bytes) >= 0)
- return 0;
-#endif
-
-#ifdef FDGETPRM
- {
- struct floppy_struct this_floppy;
-
- if (ioctl(fd, FDGETPRM, &this_floppy) >= 0) {
- *bytes = this_floppy.size << 9;
- return 0;
- }
- }
-#endif /* FDGETPRM */
-
-#ifdef HAVE_SYS_DISKLABEL_H
- {
- /*
- * This code works for FreeBSD 4.11 i386, except for the full device
- * (such as /dev/ad0). It doesn't work properly for newer FreeBSD
- * though. FreeBSD >= 5.0 should be covered by the DIOCGMEDIASIZE
- * above however.
- *
- * Note that FreeBSD >= 4.0 has disk devices as unbuffered (raw,
- * character) devices, so we need to check for S_ISCHR, too.
- */
- int part = -1;
- struct disklabel lab;
- struct partition *pp;
- char ch;
- struct stat st;
-
- if ((fstat(fd, &st) >= 0) &&
- (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode)))
- part = st.st_rdev & 7;
-
- if (part >= 0 && (ioctl(fd, DIOCGDINFO, (char *)&lab) >= 0)) {
- pp = &lab.d_partitions[part];
- if (pp->p_size) {
- *bytes = pp->p_size << 9;
- return 0;
- }
- }
- }
-#endif /* HAVE_SYS_DISKLABEL_H */
-
- {
- struct stat st;
-
- if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode)) {
- *bytes = st.st_size;
- return 0;
- }
- if (!S_ISBLK(st.st_mode))
- return -1;
- }
-
- *bytes = blkdev_find_size(fd);
- return 0;
-}
-
-/* get 512-byte sector count */
-int
-blkdev_get_sectors(int fd, unsigned long long *sectors)
-{
- unsigned long long bytes;
-
- if (blkdev_get_size(fd, &bytes) == 0) {
- *sectors = (bytes >> 9);
- return 0;
- }
-
- return -1;
-}
-
-/*
- * Get logical sector size.
- *
- * This is the smallest unit the storage device can
- * address. It is typically 512 bytes.
- */
-int blkdev_get_sector_size(int fd, int *sector_size)
-{
-#ifdef BLKSSZGET
- if (ioctl(fd, BLKSSZGET, sector_size) >= 0)
- return 0;
- return -1;
-#else
- *sector_size = DEFAULT_SECTOR_SIZE;
- return 0;
-#endif
-}
-
-/*
- * Get physical block device size. The BLKPBSZGET is supported since Linux
- * 2.6.32. For old kernels is probably the best to assume that physical sector
- * size is the same as logical sector size.
- *
- * Example:
- *
- * rc = blkdev_get_physector_size(fd, &physec);
- * if (rc || physec == 0) {
- * rc = blkdev_get_sector_size(fd, &physec);
- * if (rc)
- * physec = DEFAULT_SECTOR_SIZE;
- * }
- */
-int blkdev_get_physector_size(int fd, int *sector_size)
-{
-#ifdef BLKPBSZGET
- if (ioctl(fd, BLKPBSZGET, &sector_size) >= 0)
- return 0;
- return -1;
-#else
- *sector_size = DEFAULT_SECTOR_SIZE;
- return 0;
-#endif
-}
-
-/*
- * Return the alignment status of a device
- */
-int blkdev_is_misaligned(int fd)
-{
-#ifdef BLKALIGNOFF
- int aligned;
-
- if (ioctl(fd, BLKALIGNOFF, &aligned) < 0)
- return 0; /* probably kernel < 2.6.32 */
- /*
- * Note that kernel returns -1 as alignement offset if no compatible
- * sizes and alignments exist for stacked devices
- */
- return aligned != 0 ? 1 : 0;
-#else
- return 0;
-#endif
-}
-
-int blkdev_is_cdrom(int fd)
-{
-#ifdef CDROM_GET_CAPABILITY
- int ret;
-
- if ((ret = ioctl(fd, CDROM_GET_CAPABILITY, NULL)) < 0)
- return 0;
- else
- return ret;
-#else
- return 0;
-#endif
-}
-
-/*
- * Get kernel's interpretation of the device's geometry.
- *
- * Returns the heads and sectors - but not cylinders
- * as it's truncated for disks with more than 65535 tracks.
- *
- * Note that this is deprecated in favor of LBA addressing.
- */
-int blkdev_get_geometry(int fd, unsigned int *h, unsigned int *s)
-{
-#ifdef HDIO_GETGEO
- struct hd_geometry geometry;
-
- if (ioctl(fd, HDIO_GETGEO, &geometry) == 0) {
- *h = geometry.heads;
- *s = geometry.sectors;
- return 0;
- }
-#else
- *h = 0;
- *s = 0;
-#endif
- return -1;
-}
-
-/*
- * Convert scsi type to human readable string.
- */
-const char *blkdev_scsi_type_to_name(int type)
-{
- switch (type) {
- case SCSI_TYPE_DISK:
- return "disk";
- case SCSI_TYPE_TAPE:
- return "tape";
- case SCSI_TYPE_PRINTER:
- return "printer";
- case SCSI_TYPE_PROCESSOR:
- return "processor";
- case SCSI_TYPE_WORM:
- return "worm";
- case SCSI_TYPE_ROM:
- return "rom";
- case SCSI_TYPE_SCANNER:
- return "scanner";
- case SCSI_TYPE_MOD:
- return "mo-disk";
- case SCSI_TYPE_MEDIUM_CHANGER:
- return "changer";
- case SCSI_TYPE_COMM:
- return "comm";
- case SCSI_TYPE_RAID:
- return "raid";
- case SCSI_TYPE_ENCLOSURE:
- return "enclosure";
- case SCSI_TYPE_RBC:
- return "rbc";
- case SCSI_TYPE_OSD:
- return "osd";
- case SCSI_TYPE_NO_LUN:
- return "no-lun";
- default:
- break;
- }
- return NULL;
-}
-
-#ifdef TEST_PROGRAM
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-int
-main(int argc, char **argv)
-{
- unsigned long long bytes;
- unsigned long long sectors;
- int sector_size, phy_sector_size;
- int fd;
-
- if (argc != 2) {
- fprintf(stderr, "usage: %s device\n", argv[0]);
- exit(EXIT_FAILURE);
- }
-
- if ((fd = open(argv[1], O_RDONLY)) < 0)
- err(EXIT_FAILURE, "open %s failed", argv[1]);
-
- if (blkdev_get_size(fd, &bytes) < 0)
- err(EXIT_FAILURE, "blkdev_get_size() failed");
- if (blkdev_get_sectors(fd, &sectors) < 0)
- err(EXIT_FAILURE, "blkdev_get_sectors() failed");
- if (blkdev_get_sector_size(fd, &sector_size) < 0)
- err(EXIT_FAILURE, "blkdev_get_sector_size() failed");
- if (blkdev_get_physector_size(fd, &phy_sector_size) < 0)
- err(EXIT_FAILURE, "blkdev_get_physector_size() failed");
-
- printf(" bytes: %llu\n", bytes);
- printf(" sectors: %llu\n", sectors);
- printf(" sector size: %d\n", sector_size);
- printf("phy-sector size: %d\n", phy_sector_size);
-
- return EXIT_SUCCESS;
-}
-#endif /* TEST_PROGRAM */