* %End-Header%
*/
+#ifndef _LARGEFILE_SOURCE
#define _LARGEFILE_SOURCE
+#endif
+#ifndef _LARGEFILE64_SOURCE
#define _LARGEFILE64_SOURCE
+#endif
+
+#include "config.h"
+#include "blkidP.h"
#include <stdio.h>
#if HAVE_UNISTD_H
#include <errno.h>
#endif
#include <fcntl.h>
-#ifdef HAVE_LINUX_FD_H
+#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_LINUX_FD_H
#include <linux/fd.h>
-#endif /* HAVE_LINUX_FD_H */
+#endif
#ifdef HAVE_SYS_DISKLABEL_H
-#include <sys/ioctl.h>
#include <sys/disklabel.h>
-#include <sys/stat.h>
-#endif /* HAVE_SYS_DISKLABEL_H */
+#endif
+#ifdef HAVE_SYS_DISK_H
+#include <sys/disk.h>
+#endif
#ifdef __linux__
#include <sys/utsname.h>
#endif
+#if HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
-#include "blkidP.h"
#if defined(__linux__) && defined(_IO) && !defined(BLKGETSIZE)
#define BLKGETSIZE _IO(0x12,96) /* return device size */
#endif
#ifdef APPLE_DARWIN
-#include <sys/ioctl.h>
-#include <sys/disk.h>
-
#define BLKGETSIZE DKIOCGETBLOCKCOUNT32
#endif /* APPLE_DARWIN */
}
/*
- * Returns the number of blocks in a partition
+ * Returns the number of bytes 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;
+ unsigned long long size64 __BLKID_ATTR((unused));
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 / (blocksize / 512)) > 0xFFFFFFFF))
+#if defined DKIOCGETBLOCKCOUNT && defined DKIOCGETBLOCKSIZE /* For Apple Darwin */
+ unsigned int size;
+
+ if (ioctl(fd, DKIOCGETBLOCKCOUNT, &size64) >= 0 &&
+ ioctl(fd, DKIOCGETBLOCKSIZE, &size) >= 0) {
+ if (sizeof(blkid_loff_t) < sizeof(unsigned long long) &&
+ (size64 * size) > 0xFFFFFFFF)
return 0; /* EFBIG */
- return (blkid_loff_t) size64 << 9;
+ return (blkid_loff_t)size64 * size;
}
#endif
#ifdef BLKGETSIZE64
+ {
+ int valid_blkgetsize64 = 1;
#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;
- }
+ struct utsname ut;
+
+ 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 /* BLKGETSIZE64 */
#ifdef BLKGETSIZE
- if (ioctl(fd, BLKGETSIZE, &size) >= 0)
- return (blkid_loff_t)size << 9;
+ {
+ unsigned long size;
+
+ if (ioctl(fd, BLKGETSIZE, &size) >= 0)
+ return (blkid_loff_t)size << 9;
+ }
#endif
+/* tested on FreeBSD 6.1-RELEASE i386 */
+#ifdef DIOCGMEDIASIZE
+ if (ioctl(fd, DIOCGMEDIASIZE, &size64) >= 0)
+ return (off_t)size64;
+#endif /* DIOCGMEDIASIZE */
+
#ifdef FDGETPRM
- if (ioctl(fd, FDGETPRM, &this_floppy) >= 0)
- return (blkid_loff_t)this_floppy.size << 9;
+ {
+ struct floppy_struct this_floppy;
+
+ 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;
+#if defined(HAVE_SYS_DISKLABEL_H) && defined(DIOCGDINFO)
+ {
+ int part = -1;
+ struct disklabel lab;
+ struct partition *pp;
+ char ch;
+ struct stat st;
+
+ /*
+ * 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.
+ */
+ if (fstat(fd, &st) >= 0 &&
+ blkidP_is_disk_device(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 /* defined(HAVE_SYS_DISKLABEL_H) && defined(DIOCGDINFO) */
+ {
+#if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
+ struct stat64 st;
+ if (fstat64(fd, &st) == 0)
+#else
+ struct stat st;
+ if (fstat(fd, &st) == 0)
#endif
-#endif /* HAVE_SYS_DISKLABEL_H */
+ if (S_ISREG(st.st_mode))
+ return st.st_size;
+ }
/*
* OK, we couldn't figure it out by using a specialized ioctl,
low = 0;
for (high = 1024; valid_offset(fd, high); high *= 2)
low = high;
- while (low < high - 1)
- {
+ while (low < high - 1) {
const blkid_loff_t mid = (low + high) / 2;
if (valid_offset(fd, mid))
#ifdef TEST_PROGRAM
int main(int argc, char **argv)
{
- blkid_loff_t bytes;
+ long long bytes;
int fd;
if (argc < 2) {
perror(argv[0]);
bytes = blkid_get_dev_size(fd);
- printf("Device %s has %Ld 1k blocks.\n", argv[1], bytes >> 10);
+ printf("Device %s has %lld 1k blocks.\n", argv[1],
+ (unsigned long long)bytes >> 10);
return 0;
}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff