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hw/block/pflash: Check return value of blk_pwrite()

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When updating the PFLASH file contents, we should check for a
possible failure of blk_pwrite(). Similar to commit 3a688294e.

Reported-by: Coverity (CID 1357678 CHECKED_RETURN)
Signed-off-by: Mansour Ahmadi <mansourweb@gmail.com>
Message-Id: <20200408003552.58095-1-mansourweb@gmail.com>
[PMD: Add missing "qemu/error-report.h" include and TODO comment]
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Mansour Ahmadi 2020-04-07 20:35:52 -04:00 committed by Philippe Mathieu-Daudé
parent 3072182dc1
commit 1857b9db49
2 changed files with 14 additions and 2 deletions
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8
hw/block/pflash_cfi01.c
View file

@ -42,6 +42,7 @@
#include "hw/qdev-properties.h"
#include "sysemu/block-backend.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/bitops.h"
#include "qemu/error-report.h"
#include "qemu/host-utils.h"
@ -389,13 +390,18 @@ static void pflash_update(PFlashCFI01 *pfl, int offset,
int size)
{
int offset_end;
int ret;
if (pfl->blk) {
offset_end = offset + size;
/* widen to sector boundaries */
offset = QEMU_ALIGN_DOWN(offset, BDRV_SECTOR_SIZE);
offset_end = QEMU_ALIGN_UP(offset_end, BDRV_SECTOR_SIZE);
blk_pwrite(pfl->blk, offset, pfl->storage + offset,
ret = blk_pwrite(pfl->blk, offset, pfl->storage + offset,
offset_end - offset, 0);
if (ret < 0) {
/* TODO set error bit in status */
error_report("Could not update PFLASH: %s", strerror(-ret));
}
}
}

8
hw/block/pflash_cfi02.c
View file

@ -37,6 +37,7 @@
#include "hw/block/flash.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/bitmap.h"
#include "qemu/timer.h"
#include "sysemu/block-backend.h"
@ -393,13 +394,18 @@ static uint64_t pflash_read(void *opaque, hwaddr offset, unsigned int width)
static void pflash_update(PFlashCFI02 *pfl, int offset, int size)
{
int offset_end;
int ret;
if (pfl->blk) {
offset_end = offset + size;
/* widen to sector boundaries */
offset = QEMU_ALIGN_DOWN(offset, BDRV_SECTOR_SIZE);
offset_end = QEMU_ALIGN_UP(offset_end, BDRV_SECTOR_SIZE);
blk_pwrite(pfl->blk, offset, pfl->storage + offset,
ret = blk_pwrite(pfl->blk, offset, pfl->storage + offset,
offset_end - offset, 0);
if (ret < 0) {
/* TODO set error bit in status */
error_report("Could not update PFLASH: %s", strerror(-ret));
}
}
}