* getsize.c --- get the size of a partition.
*
* Copyright (C) 1995, 1995 Theodore Ts'o.
+ * Copyright (C) 2003 VMware, Inc.
*
+ * Windows version of ext2fs_get_device_size by Chris Li, VMware.
+ *
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
+#define _LARGEFILE_SOURCE
+#define _LARGEFILE64_SOURCE
+
#include <stdio.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
-#if HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_ERRNO_H
+#if HAVE_ERRNO_H
#include <errno.h>
#endif
#include <fcntl.h>
-#ifdef HAVE_LINUX_FS_H
-#include <linux/fs.h>
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
#endif
#ifdef HAVE_LINUX_FD_H
-#include <sys/ioctl.h>
#include <linux/fd.h>
#endif
#ifdef HAVE_SYS_DISKLABEL_H
-#include <sys/ioctl.h>
#include <sys/disklabel.h>
-#endif /* HAVE_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
+#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
-#include <linux/ext2_fs.h>
+#ifdef APPLE_DARWIN
+#define BLKGETSIZE DKIOCGETBLOCKCOUNT32
+#endif /* APPLE_DARWIN */
+
+#include "ext2_fs.h"
#include "ext2fs.h"
+#if defined(__CYGWIN__) || defined (WIN32)
+#include "windows.h"
+#include "winioctl.h"
+
+#if (_WIN32_WINNT >= 0x0500)
+#define HAVE_GET_FILE_SIZE_EX 1
+#endif
+
+errcode_t ext2fs_get_device_size(const char *file, int blocksize,
+ blk_t *retblocks)
+{
+ HANDLE dev;
+ PARTITION_INFORMATION pi;
+ DISK_GEOMETRY gi;
+ DWORD retbytes;
+#ifdef HAVE_GET_FILE_SIZE_EX
+ LARGE_INTEGER filesize;
+#else
+ DWORD filesize;
+#endif /* HAVE_GET_FILE_SIZE_EX */
+
+ dev = CreateFile(file, GENERIC_READ,
+ FILE_SHARE_READ | FILE_SHARE_WRITE ,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+
+ if (dev == INVALID_HANDLE_VALUE)
+ return EBADF;
+ if (DeviceIoControl(dev, IOCTL_DISK_GET_PARTITION_INFO,
+ &pi, sizeof(PARTITION_INFORMATION),
+ &pi, sizeof(PARTITION_INFORMATION),
+ &retbytes, NULL)) {
+
+ *retblocks = pi.PartitionLength.QuadPart / blocksize;
+
+ } else if (DeviceIoControl(dev, IOCTL_DISK_GET_DRIVE_GEOMETRY,
+ &gi, sizeof(DISK_GEOMETRY),
+ &gi, sizeof(DISK_GEOMETRY),
+ &retbytes, NULL)) {
+
+ *retblocks = gi.BytesPerSector *
+ gi.SectorsPerTrack *
+ gi.TracksPerCylinder *
+ gi.Cylinders.QuadPart / blocksize;
+
+#ifdef HAVE_GET_FILE_SIZE_EX
+ } else if (GetFileSizeEx(dev, &filesize)) {
+ *retblocks = filesize.QuadPart / blocksize;
+ }
+#else
+ } else {
+ filesize = GetFileSize(dev, NULL);
+ if (INVALID_FILE_SIZE != filesize) {
+ *retblocks = filesize / blocksize;
+ }
+ }
+#endif /* HAVE_GET_FILE_SIZE_EX */
+
+ CloseHandle(dev);
+ return 0;
+}
+
+#else
+
static int valid_offset (int fd, ext2_loff_t offset)
{
char ch;
blk_t *retblocks)
{
int fd;
-#ifdef BLKGETSIZE
- long size;
+ int valid_blkgetsize64 = 1;
+#ifdef __linux__
+ struct utsname ut;
#endif
+ unsigned long long size64;
+ unsigned long size;
ext2_loff_t high, low;
#ifdef FDGETPRM
struct floppy_struct this_floppy;
char ch;
#endif /* HAVE_SYS_DISKLABEL_H */
+#ifdef HAVE_OPEN64
+ fd = open64(file, O_RDONLY);
+#else
fd = open(file, O_RDONLY);
+#endif
if (fd < 0)
return errno;
+#ifdef DKIOCGETBLOCKCOUNT /* For Apple Darwin */
+ if (ioctl(fd, DKIOCGETBLOCKCOUNT, &size64) >= 0) {
+ if ((sizeof(*retblocks) < sizeof(unsigned long long))
+ && ((size64 / (blocksize / 512)) > 0xFFFFFFFF))
+ return EFBIG;
+ close(fd);
+ *retblocks = size64 / (blocksize / 512);
+ return 0;
+ }
+#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(*retblocks) < sizeof(unsigned long long))
+ && ((size64 / blocksize) > 0xFFFFFFFF))
+ return EFBIG;
+ close(fd);
+ *retblocks = size64 / blocksize;
+ return 0;
+ }
+#endif
+
#ifdef BLKGETSIZE
if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
close(fd);
return 0;
}
#endif
+
#ifdef FDGETPRM
if (ioctl(fd, FDGETPRM, &this_floppy) >= 0) {
close(fd);
return 0;
}
#endif
+
#ifdef HAVE_SYS_DISKLABEL_H
+#if defined(DIOCGMEDIASIZE)
+ {
+ off_t ms;
+ u_int bs;
+ if (ioctl(fd, DIOCGMEDIASIZE, &ms) >= 0) {
+ *retblocks = ms / blocksize;
+ return 0;
+ }
+ }
+#elif defined(DIOCGDINFO)
+ /* old disklabel interface */
part = strlen(file) - 1;
if (part >= 0) {
ch = file[part];
return 0;
}
}
+#endif /* defined(DIOCG*) */
#endif /* HAVE_SYS_DISKLABEL_H */
/*
*retblocks = (low + 1) / blocksize;
return 0;
}
+
+#endif /* WIN32 */
+
+#ifdef DEBUG
+int main(int argc, char **argv)
+{
+ blk_t blocks;
+ int retval;
+
+ if (argc < 2) {
+ fprintf(stderr, "Usage: %s device\n", argv[0]);
+ exit(1);
+ }
+
+ retval = ext2fs_get_device_size(argv[1], 1024, &blocks);
+ if (retval) {
+ com_err(argv[0], retval,
+ "while calling ext2fs_get_device_size");
+ exit(1);
+ }
+ printf("Device %s has %d 1k blocks.\n", argv[1], blocks);
+ exit(0);
+}
+#endif
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff