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drivers/storage: Fix array references 

Fix bug detected by coverity to handle the zero capacity case.  Specific
changes:

* Reduce loop count by one to handle zero capacity case
* Use structure instead of dual arrays
* Move structures into display_capacity routine

Coverity Issues:
* 1374931
* 1374932
* 1374933
* 1374934

TEST=Build and run on Galileo Gen2

Change-Id: Ie5c96e78417b667438a00ee22c70894a00d13291
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/19643
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Lee Leahy 2017-05-09 16:37:58 -07:00
parent 72f730e23c
commit bf5d5093fc
1 changed files with 31 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
src/drivers/storage/storage.c
View File

@ -30,41 +30,9 @@
#define DECIMAL_CAPACITY_MULTIPLIER 1000ULL
#define HEX_CAPACITY_MULTIPLIER 1024ULL
static const char * const hex_unit_name[] = {
"TiB", "GiB", "MiB", "KiB", "B"
};
static const char * const decimal_unit_name[] = {
"TB", "GB", "MB", "KB", "B"
};
static const uint64_t decimal_capacity_table[] = {
/* TB */
DECIMAL_CAPACITY_MULTIPLIER * DECIMAL_CAPACITY_MULTIPLIER
* DECIMAL_CAPACITY_MULTIPLIER * DECIMAL_CAPACITY_MULTIPLIER,
/* GB */
DECIMAL_CAPACITY_MULTIPLIER * DECIMAL_CAPACITY_MULTIPLIER
* DECIMAL_CAPACITY_MULTIPLIER,
/* MB */
DECIMAL_CAPACITY_MULTIPLIER * DECIMAL_CAPACITY_MULTIPLIER,
/* KB */
DECIMAL_CAPACITY_MULTIPLIER,
/* B */
1
};
static const uint64_t hex_capacity_table[] = {
/* TiB */
HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER
* HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER,
/* GiB */
HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER
* HEX_CAPACITY_MULTIPLIER,
/* MiB */
HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER,
/* KiB */
HEX_CAPACITY_MULTIPLIER,
/* B */
1
struct capacity {
const char * const units;
uint64_t bytes;
};
static void display_capacity(struct storage_media *media, int partition_number)
@ -77,6 +45,26 @@ static void display_capacity(struct storage_media *media, int partition_number)
int index;
const char *name;
const char *separator;
const struct capacity decimal_list[] = {
{"TB", DECIMAL_CAPACITY_MULTIPLIER * DECIMAL_CAPACITY_MULTIPLIER
* DECIMAL_CAPACITY_MULTIPLIER
* DECIMAL_CAPACITY_MULTIPLIER},
{"GB", DECIMAL_CAPACITY_MULTIPLIER * DECIMAL_CAPACITY_MULTIPLIER
* DECIMAL_CAPACITY_MULTIPLIER},
{"MB", DECIMAL_CAPACITY_MULTIPLIER
* DECIMAL_CAPACITY_MULTIPLIER},
{"KB", DECIMAL_CAPACITY_MULTIPLIER},
{"B", 1}
};
const struct capacity hex_list[] = {
{"TiB", HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER
* HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER},
{"GiB", HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER
* HEX_CAPACITY_MULTIPLIER},
{"MiB", HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER},
{"KiB", HEX_CAPACITY_MULTIPLIER},
{"B", 1}
};
/* Get the partition name */
capacity = media->capacity[partition_number];
@ -86,23 +74,20 @@ static void display_capacity(struct storage_media *media, int partition_number)
separator = ": ";
/* Determine the decimal divisor for the capacity */
ASSERT(ARRAY_SIZE(decimal_capacity_table)
== ARRAY_SIZE(decimal_unit_name));
for (index = 0; index < ARRAY_SIZE(decimal_capacity_table); index++) {
if (capacity >= decimal_capacity_table[index])
for (index = 0; index < ARRAY_SIZE(decimal_list) - 1; index++) {
if (capacity >= decimal_list[index].bytes)
break;
}
decimal_divisor = decimal_capacity_table[index];
decimal_units = decimal_unit_name[index];
decimal_divisor = decimal_list[index].bytes;
decimal_units = decimal_list[index].units;
/* Determine the hex divisor for the capacity */
ASSERT(ARRAY_SIZE(hex_capacity_table) == ARRAY_SIZE(hex_unit_name));
for (index = 0; index < ARRAY_SIZE(hex_capacity_table); index++) {
if (capacity >= hex_capacity_table[index])
for (index = 0; index < ARRAY_SIZE(hex_list) - 1; index++) {
if (capacity >= hex_list[index].bytes)
break;
}
hex_divisor = hex_capacity_table[index];
hex_units = hex_unit_name[index];
hex_divisor = hex_list[index].bytes;
hex_units = hex_list[index].units;
/* Display the capacity */
sdhc_debug("%3lld.%03lld %sytes (%3lld.%03lld %sytes)%s%s\n",