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f3probe: improve debugging facility

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This commit is contained in:
Michel Machado 2014-08-15 17:56:37 -04:00
parent c1c7a95f0b
commit ceb79aae4e
2 changed files with 17 additions and 19 deletions
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19
f3probe.c
View File

@ -39,7 +39,7 @@ static struct argp_option options[] = {
"Enable debuging with a regular file", 1},
{"debug-fake-size", 'f', "SIZE_GB", OPTION_HIDDEN,
"Fake size of the emulated flash", 0},
{"debug-type", 't', "TYPE", OPTION_HIDDEN,
{"debug-type", 't', "N", OPTION_HIDDEN,
"Set the type of the fake flash", 0},
{"debug-unit-test", 'u', NULL, OPTION_HIDDEN,
"Run a unit test; it ignores all other debug options", 0},
@ -90,18 +90,16 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state)
args->debug = true;
break;
case 't':
if (!strcmp(arg, "good"))
args->fake_type = FKTY_GOOD;
else if (!strcmp(arg, "limbo"))
args->fake_type = FKTY_LIMBO;
else if (!strcmp(arg, "wraparound"))
args->fake_type = FKTY_WRAPAROUND;
else
case 't': {
long l = arg_to_long(state, arg);
if (l < FKTY_GOOD || l >= FKTY_MAX)
argp_error(state,
"Fake type must be either `good', `limbo' or `wraparound'");
"Fake type must be a number in the interval [%i, %i]",
FKTY_GOOD, FKTY_MAX);
args->fake_type = l;
args->debug = true;
break;
}
case 'u':
args->unit_test = true;
@ -140,6 +138,7 @@ struct unit_test_item {
static const struct unit_test_item ftype_to_params[] = {
{FKTY_GOOD, 1, 1},
{FKTY_BAD, 0, 1},
{FKTY_LIMBO, 1, 2},
{FKTY_WRAPAROUND, 1, 2},
{FKTY_WRAPAROUND, 2, 3},

17
libprobe.c
View File

@ -70,6 +70,10 @@ static int fdev_read_block(struct device *dev, char *buf, uint64_t block)
int done;
switch (fdev->fake_type) {
case FKTY_BAD:
memset(buf, 0, BLOCK_SIZE);
return 0;
case FKTY_LIMBO:
if (offset >= GIGABYTE * fdev->file_size_gb) {
memset(buf, 0, BLOCK_SIZE);
@ -77,19 +81,11 @@ static int fdev_read_block(struct device *dev, char *buf, uint64_t block)
}
break;
/* XXX Support FKTY_TRUNCATE.
* That is, it drops the highest bits, and addresses the real memory
* with the resulting address.
*
* If @fake_size_gb % @file_size_gb == 0, it's identical to
* FKTY_WRAPAROUND.
*/
case FKTY_WRAPAROUND:
offset %= GIGABYTE * fdev->file_size_gb;
/* Fall through. */
case FKTY_GOOD:
case FKTY_GOOD:
break;
default:
@ -131,6 +127,9 @@ static int fdev_write_block(struct device *dev, char *buf, uint64_t block)
off_t offset = block * BLOCK_SIZE;
switch (fdev->fake_type) {
case FKTY_BAD:
return 0;
case FKTY_LIMBO:
if (offset >= GIGABYTE * fdev->file_size_gb)
return 0;