diff options
Diffstat (limited to 'e2fsprogs/ext2fs/getsize.c')
| -rw-r--r-- | e2fsprogs/ext2fs/getsize.c | 291 |
1 files changed, 0 insertions, 291 deletions
diff --git a/e2fsprogs/ext2fs/getsize.c b/e2fsprogs/ext2fs/getsize.c deleted file mode 100644 index 516886c1f..000000000 --- a/e2fsprogs/ext2fs/getsize.c +++ /dev/null @@ -1,291 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * 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% - */ - -#include <stdio.h> -#if HAVE_UNISTD_H -#include <unistd.h> -#endif -#if 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> -#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 */ - -#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; - - if (ext2fs_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 - */ -errcode_t ext2fs_get_device_size(const char *file, int blocksize, - blk_t *retblocks) -{ - int fd; - 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; -#endif -#ifdef HAVE_SYS_DISKLABEL_H - int part; - struct disklabel lab; - struct partition *pp; - char ch; -#endif /* HAVE_SYS_DISKLABEL_H */ - -#ifdef CONFIG_LFS - 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); - *retblocks = size / (blocksize / 512); - return 0; - } -#endif - -#ifdef FDGETPRM - if (ioctl(fd, FDGETPRM, &this_floppy) >= 0) { - close(fd); - *retblocks = this_floppy.size / (blocksize / 512); - 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]; - if (isdigit(ch)) - part = 0; - else if (ch >= 'a' && ch <= 'h') - part = ch - 'a'; - else - part = -1; - } - if (part >= 0 && (ioctl(fd, DIOCGDINFO, (char *)&lab) >= 0)) { - pp = &lab.d_partitions[part]; - if (pp->p_size) { - close(fd); - *retblocks = pp->p_size / (blocksize / 512); - return 0; - } - } -#endif /* defined(DIOCG*) */ -#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 ext2_loff_t mid = (low + high) / 2; - - if (valid_offset (fd, mid)) - low = mid; - else - high = mid; - } - valid_offset (fd, 0); - close(fd); - size64 = low + 1; - if ((sizeof(*retblocks) < sizeof(unsigned long long)) - && ((size64 / blocksize) > 0xFFFFFFFF)) - return EFBIG; - *retblocks = size64 / 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 |