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Diffstat (limited to 'e2fsprogs/blkid/blkid_getsize.c')
-rw-r--r--e2fsprogs/blkid/blkid_getsize.c179
1 files changed, 0 insertions, 179 deletions
diff --git a/e2fsprogs/blkid/blkid_getsize.c b/e2fsprogs/blkid/blkid_getsize.c
deleted file mode 100644
index 941efa4..0000000
--- a/e2fsprogs/blkid/blkid_getsize.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * getsize.c --- get the size of a partition.
- *
- * Copyright (C) 1995, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-/* include this before sys/queues.h! */
-#include "blkidP.h"
-
-#include <stdio.h>
-#include <unistd.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <fcntl.h>
-#ifdef HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
-#endif
-#ifdef HAVE_LINUX_FD_H
-#include <linux/fd.h>
-#endif
-#ifdef HAVE_SYS_DISKLABEL_H
-#include <sys/disklabel.h>
-#include <sys/stat.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
-#ifdef __linux__
-#include <sys/utsname.h>
-#endif
-
-#if defined(__linux__) && defined(_IO) && !defined(BLKGETSIZE)
-#define BLKGETSIZE _IO(0x12,96) /* return device size */
-#endif
-
-#if defined(__linux__) && defined(_IOR) && !defined(BLKGETSIZE64)
-#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
-#endif
-
-#ifdef APPLE_DARWIN
-#define BLKGETSIZE DKIOCGETBLOCKCOUNT32
-#endif /* APPLE_DARWIN */
-
-static int valid_offset(int fd, blkid_loff_t offset)
-{
- char ch;
-
- if (blkid_llseek(fd, offset, 0) < 0)
- return 0;
- if (read(fd, &ch, 1) < 1)
- return 0;
- return 1;
-}
-
-/*
- * Returns the number of blocks in a partition
- */
-blkid_loff_t blkid_get_dev_size(int fd)
-{
- int valid_blkgetsize64 = 1;
-#ifdef __linux__
- struct utsname ut;
-#endif
- unsigned long long size64;
- unsigned long size;
- blkid_loff_t high, low;
-#ifdef FDGETPRM
- struct floppy_struct this_floppy;
-#endif
-#ifdef HAVE_SYS_DISKLABEL_H
- int part = -1;
- struct disklabel lab;
- struct partition *pp;
- char ch;
- struct stat st;
-#endif /* HAVE_SYS_DISKLABEL_H */
-
-#ifdef DKIOCGETBLOCKCOUNT /* For Apple Darwin */
- if (ioctl(fd, DKIOCGETBLOCKCOUNT, &size64) >= 0) {
- if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
- && (size64 << 9 > 0xFFFFFFFF))
- return 0; /* EFBIG */
- return (blkid_loff_t) size64 << 9;
- }
-#endif
-
-#ifdef BLKGETSIZE64
-#ifdef __linux__
- if ((uname(&ut) == 0) &&
- ((ut.release[0] == '2') && (ut.release[1] == '.') &&
- (ut.release[2] < '6') && (ut.release[3] == '.')))
- valid_blkgetsize64 = 0;
-#endif
- if (valid_blkgetsize64 &&
- ioctl(fd, BLKGETSIZE64, &size64) >= 0) {
- if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
- && ((size64) > 0xFFFFFFFF))
- return 0; /* EFBIG */
- return size64;
- }
-#endif
-
-#ifdef BLKGETSIZE
- if (ioctl(fd, BLKGETSIZE, &size) >= 0)
- return (blkid_loff_t)size << 9;
-#endif
-
-#ifdef FDGETPRM
- if (ioctl(fd, FDGETPRM, &this_floppy) >= 0)
- return (blkid_loff_t)this_floppy.size << 9;
-#endif
-#ifdef HAVE_SYS_DISKLABEL_H
-#if 0
- /*
- * This should work in theory but I haven't tested it. Anyone
- * on a BSD system want to test this for me? In the meantime,
- * binary search mechanism should work just fine.
- */
- if ((fstat(fd, &st) >= 0) && S_ISBLK(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)
- return pp->p_size << 9;
- }
-#endif
-#endif /* HAVE_SYS_DISKLABEL_H */
-
- /*
- * OK, we couldn't figure it out by using a specialized ioctl,
- * which is generally the best way. So do binary search to
- * find the size of the partition.
- */
- low = 0;
- for (high = 1024; valid_offset(fd, high); high *= 2)
- low = high;
- while (low < high - 1)
- {
- const blkid_loff_t mid = (low + high) / 2;
-
- if (valid_offset(fd, mid))
- low = mid;
- else
- high = mid;
- }
- return low + 1;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- blkid_loff_t bytes;
- int fd;
-
- if (argc < 2) {
- fprintf(stderr, "Usage: %s device\n"
- "Determine the size of a device\n", argv[0]);
- return 1;
- }
-
- if ((fd = open(argv[1], O_RDONLY)) < 0)
- perror(argv[0]);
-
- bytes = blkid_get_dev_size(fd);
- printf("Device %s has %lld 1k blocks.\n", argv[1], bytes >> 10);
-
- return 0;
-}
-#endif