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mtd/config: Add some error checks for I/O errors

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This commit is contained in:
Juha Niskanen 2017-06-01 06:22:27 -06:00 committed by Gregory Nutt
parent 32610b53f4
commit 06edfae133
2 changed files with 32 additions and 4 deletions
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34
drivers/mtd/mtd_config.c
View File

@ -352,7 +352,14 @@ static int mtdconfig_findfirstentry(FAR struct mtdconfig_struct_s *dev,
off_t bytes_left_in_block;
uint16_t endblock;
mtdconfig_readbytes(dev, 0, sig, sizeof(sig)); /* Read the signature bytes */
/* Read the signature bytes */
ret = mtdconfig_readbytes(dev, 0, sig, sizeof(sig));
if (ret != OK)
{
return 0;
}
if (sig[0] != 'C' || sig[1] != 'D' || sig[2] != CONFIGDATA_FORMAT_VERSION)
{
/* Config Data partition not formatted. */
@ -788,7 +795,14 @@ static off_t mtdconfig_consolidate(FAR struct mtdconfig_struct_s *dev)
/* Scan all headers and move them to the src_offset */
retry_relocate:
MTD_READ(dev->mtd, src_offset, sizeof(hdr), (uint8_t *) &hdr);
bytes = MTD_READ(dev->mtd, src_offset, sizeof(hdr), (uint8_t *) &hdr);
if (bytes != sizeof(hdr))
{
/* I/O Error! */
goto errout;
}
if (hdr.flags == MTD_ERASED_FLAGS)
{
/* Test if the source entry is active or if we are at the end
@ -967,6 +981,11 @@ static ssize_t mtdconfig_read(FAR struct file *filep, FAR char *buffer,
/* Read data from the file */
bytes = MTD_READ(dev->mtd, dev->readoff, len, (uint8_t *) buffer);
if (bytes != len)
{
return -EIO;
}
dev->readoff += bytes;
return bytes;
}
@ -981,6 +1000,7 @@ static int mtdconfig_findentry(FAR struct mtdconfig_struct_s *dev,
FAR struct mtdconfig_header_s *phdr)
{
uint16_t endblock;
int ret;
#ifdef CONFIG_MTD_CONFIG_RAM_CONSOLIDATE
endblock = dev->neraseblocks;
@ -1013,7 +1033,15 @@ static int mtdconfig_findentry(FAR struct mtdconfig_struct_s *dev,
/* Read the 1st header from the next block */
mtdconfig_readbytes(dev, offset, (uint8_t *) phdr, sizeof(*phdr));
ret = mtdconfig_readbytes(dev, offset, (uint8_t *) phdr, sizeof(*phdr));
if (ret != OK)
{
/* Error reading the data */
offset = 0;
break;
}
if (phdr->flags == MTD_ERASED_FLAGS)
{
continue;

2
drivers/mtd/mtd_partition.c
View File

@ -157,7 +157,7 @@ static int part_procfs_stat(FAR const char *relpath,
****************************************************************************/
#if defined(CONFIG_FS_PROCFS) && !defined(CONFIG_PROCFS_EXCLUDE_PARTITIONS)
struct mtd_partition_s *g_pfirstpartition = NULL;
static struct mtd_partition_s *g_pfirstpartition = NULL;
const struct procfs_operations part_procfsoperations =
{