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* include/grub/file.h (GRUB_FILE_SIZE_UNKNOWN): New definition.

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* grub-core/disk/loopback.c (grub_loopback_open): Handle unknown file
	size.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-09-05 17:01:16 +02:00
parent 3579415d20
commit 82a8506214
3 changed files with 14 additions and 2 deletions
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7
grub-core/disk/loopback.c
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@ -167,8 +167,11 @@ grub_loopback_open (const char *name, grub_disk_t disk)
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "can't open device");
/* Use the filesize for the disk size, round up to a complete sector. */
disk->total_sectors = ((dev->file->size + GRUB_DISK_SECTOR_SIZE - 1)
/ GRUB_DISK_SECTOR_SIZE);
if (dev->file->size != GRUB_FILE_SIZE_UNKNOWN)
disk->total_sectors = ((dev->file->size + GRUB_DISK_SECTOR_SIZE - 1)
/ GRUB_DISK_SECTOR_SIZE);
else
disk->total_sectors = GRUB_DISK_SIZE_UNKNOWN;
disk->id = (unsigned long) dev;
disk->has_partitions = dev->has_partitions;