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blk: host_dev: Sanity check on the size of host backing file

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Since we are emulating a block device, its size should be multiple
of the configured block size.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2023-09-26 16:43:35 +08:00 committed by Tom Rini
parent 0491cb8f9b
commit e261fbf347
1 changed files with 5 additions and 0 deletions
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5
drivers/block/host_dev.c
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@ -58,6 +58,11 @@ static int host_sb_attach_file(struct udevice *dev, const char *filename)
size = os_filesize(fd); size = os_filesize(fd);
desc = dev_get_uclass_plat(blk); desc = dev_get_uclass_plat(blk);
if (size % desc->blksz) {
printf("The size of host backing file '%s' is not multiple of "
"the device block size\n", filename);
goto err_fname;
}
desc->lba = size / desc->blksz; desc->lba = size / desc->blksz;
/* write this in last, when nothing can go wrong */ /* write this in last, when nothing can go wrong */