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disk: Added function disk_dump_raw for dumping raw block device

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1 parent d5ff815 commit 9164f331a37261602a2539cb1c47ecabfe4a8412 @pali pali committed Nov 24, 2012
Showing with 124 additions and 0 deletions.
  1. +121 −0 src/disk.c
  2. +3 −0 src/disk.h
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121 src/disk.c
@@ -16,11 +16,24 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <fcntl.h>
+#include <libgen.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/statvfs.h>
+
+#include <linux/fs.h>
+
#include "disk.h"
#include "global.h"
#include "image.h"
#include "device.h"
#include "usb-device.h"
+#include "printf-utils.h"
+
+static char global_buf[1 << 22]; /* 4MB */
int disk_init(struct usb_device_info * dev) {
@@ -38,6 +51,15 @@ enum device disk_get_device(struct usb_device_info * dev) {
}
+int disk_flash_raw(const char * blkdev, const char * file) {
+
+ ERROR("Not implemented yet");
+ (void)blkdev;
+ (void)file;
+ return -1;
+
+}
+
int disk_flash_image(struct usb_device_info * dev, struct image * image) {
ERROR("Not implemented yet");
@@ -47,6 +69,105 @@ int disk_flash_image(struct usb_device_info * dev, struct image * image) {
}
+int disk_dump_raw(const char * blkdev, const char * file) {
+
+ int fd1, fd2;
+ int ret;
+ char * path;
+ uint64_t blksize;
+ size_t need, readed;
+ ssize_t size;
+ struct stat st;
+ struct statvfs buf;
+
+ printf("Dump block device %s to file %s...\n", blkdev, file);
+
+ if ( stat(blkdev, &st) != 0 ) {
+ ERROR_INFO("Cannot stat block device %s", blkdev);
+ return -1;
+ }
+
+ if ( ! S_ISBLK(st.st_mode) ) {
+ ERROR("Invalid block device %s", blkdev);
+ return -1;
+ }
+
+ fd1 = open(blkdev, O_RDONLY);
+
+ if ( fd1 < 0 ) {
+ ERROR_INFO("Cannot open block device %s", blkdev);
+ return -1;
+ }
+
+ if ( ioctl(fd1, BLKGETSIZE64, &blksize) != 0 ) {
+ ERROR_INFO("Cannot get size of block device %s", blkdev);
+ close(fd1);
+ return -1;
+ }
+
+ if ( blksize > ULLONG_MAX ) {
+ ERROR("Block device %s is too big", blkdev);
+ close(fd1);
+ return -1;
+ }
+
+ if ( blksize == 0 ) {
+ ERROR("Block device %s has zero size", blkdev);
+ close(fd1);
+ return -1;
+ }
+
+ path = strdup(file);
+ if ( ! path ) {
+ ALLOC_ERROR();
+ close(fd1);
+ return -1;
+ }
+
+ ret = statvfs(dirname(path), &buf);
+
+ free(path);
+
+ if ( ret == 0 && buf.f_bsize * buf.f_bfree < blksize ) {
+ ERROR("Not enought free space (have: %llu, need: %llu)", (unsigned long long int)(buf.f_bsize) * buf.f_bfree, (unsigned long long int)blksize);
+ close(fd1);
+ return -1;
+ }
+
+ fd2 = creat(file, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+
+ if ( fd2 < 0 ) {
+ ERROR_INFO("Cannot create file %s", file);
+ close(fd1);
+ return -1;
+ }
+
+ readed = 0;
+ printf_progressbar(0, blksize);
+
+ while ( readed < blksize ) {
+ need = blksize - readed;
+ if ( need > sizeof(global_buf) )
+ need = sizeof(global_buf);
+ size = read(fd1, global_buf, need);
+ if ( size == 0 )
+ break;
+ if ( write(fd2, global_buf, size) != size ) {
+ PRINTF_ERROR("Dumping image failed");
+ close(fd1);
+ close(fd2);
+ return -1;
+ }
+ readed += size;
+ printf_progressbar(readed, blksize);
+ }
+
+ close(fd1);
+ close(fd2);
+ return 0;
+
+}
+
int disk_dump_image(struct usb_device_info * dev, enum image_type image, const char * file) {
ERROR("Not implemented yet");
View
3 src/disk.h
@@ -27,6 +27,9 @@ int disk_init(struct usb_device_info * dev);
enum device disk_get_device(struct usb_device_info * dev);
+int disk_flash_raw(const char * blkdev, const char * file);
+int disk_dump_raw(const char * blkdev, const char * file);
+
int disk_flash_image(struct usb_device_info * dev, struct image * image);
int disk_dump_image(struct usb_device_info * dev, enum image_type image, const char * file);
int disk_check_badblocks(struct usb_device_info * dev, const char * device);

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