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hw/block: Request permissions

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This makes all device emulations with a qdev drive property request
permissions on their BlockBackend. The only thing we block at this point
is resizing images for some devices that can't support it.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Kevin Wolf 2017-01-24 13:43:31 +01:00
parent 39829a01ae
commit a17c17a274
17 changed files with 142 additions and 27 deletions
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19
hw/block/pflash_cfi02.c
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@ -632,6 +632,19 @@ static void pflash_cfi02_realize(DeviceState *dev, Error **errp)
vmstate_register_ram(&pfl->orig_mem, DEVICE(pfl));
pfl->storage = memory_region_get_ram_ptr(&pfl->orig_mem);
pfl->chip_len = chip_len;
if (pfl->blk) {
uint64_t perm;
pfl->ro = blk_is_read_only(pfl->blk);
perm = BLK_PERM_CONSISTENT_READ | (pfl->ro ? 0 : BLK_PERM_WRITE);
ret = blk_set_perm(pfl->blk, perm, BLK_PERM_ALL, errp);
if (ret < 0) {
return;
}
} else {
pfl->ro = 0;
}
if (pfl->blk) {
/* read the initial flash content */
ret = blk_pread(pfl->blk, 0, pfl->storage, chip_len);
@ -646,12 +659,6 @@ static void pflash_cfi02_realize(DeviceState *dev, Error **errp)
pfl->rom_mode = 1;
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &pfl->mem);
if (pfl->blk) {
pfl->ro = blk_is_read_only(pfl->blk);
} else {
pfl->ro = 0;
}
pfl->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, pflash_timer, pfl);
pfl->wcycle = 0;
pfl->cmd = 0;