From: David van Moolenbroek Date: Fri, 12 Oct 2012 12:55:55 +0000 (+0000) Subject: blocktest: make fewer assumptions about driver X-Git-Tag: v3.2.1~283 X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/readme1st.txt?a=commitdiff_plain;h=2e26c872c4e9d95da5d1cdcf797bdb7212f0e20d;p=minix.git blocktest: make fewer assumptions about driver In particular, allow partial results to be returned in some cases, and do not require that the driver fail on word-unaligned access. --- diff --git a/test/blocktest/blocktest.c b/test/blocktest/blocktest.c index 5e67712d2..8f2299ef5 100644 --- a/test/blocktest/blocktest.c +++ b/test/blocktest/blocktest.c @@ -75,14 +75,20 @@ static int set_result(result_t *res, int type, ssize_t value) return type; } -static void accept_result(result_t *res, int type, ssize_t value) +static int accept_result(result_t *res, int type, ssize_t value) { /* If the result is of the given type and value, reset it to a success - * result. This allows for a logical OR on error codes. + * result. This allows for a logical OR on error codes. Return whether + * the result was indeed reset. */ - if (res->type == type && res->value == value) + if (res->type == type && res->value == value) { set_result(res, RESULT_OK, 0); + + return TRUE; + } + + return FALSE; } static void got_result(result_t *res, char *desc) @@ -226,7 +232,7 @@ static int sendrec_driver(message *m_ptr, ssize_t exp, result_t *res) return set_result(res, RESULT_OK, 0); } -static int raw_xfer(dev_t minor, u64_t pos, iovec_s_t *iovec, int nr_req, +static void raw_xfer(dev_t minor, u64_t pos, iovec_s_t *iovec, int nr_req, int write, ssize_t exp, result_t *res) { /* Perform a transfer with a safecopy iovec already supplied. @@ -257,24 +263,24 @@ static int raw_xfer(dev_t minor, u64_t pos, iovec_s_t *iovec, int nr_req, panic("unable to revoke grant"); if (r != RESULT_OK) - return r; + return; if (m.BDEV_STATUS == exp) - return r; + return; if (exp < 0) - return set_result(res, RESULT_BADSTATUS, m.BDEV_STATUS); + set_result(res, RESULT_BADSTATUS, m.BDEV_STATUS); else - return set_result(res, RESULT_TRUNC, exp - m.BDEV_STATUS); + set_result(res, RESULT_TRUNC, exp - m.BDEV_STATUS); } -static int vir_xfer(dev_t minor, u64_t pos, iovec_t *iovec, int nr_req, +static void vir_xfer(dev_t minor, u64_t pos, iovec_t *iovec, int nr_req, int write, ssize_t exp, result_t *res) { /* Perform a transfer, creating and revoking grants for the I/O vector. */ iovec_s_t iov_s[NR_IOREQS]; - int i, r; + int i; assert(nr_req <= NR_IOREQS); @@ -287,7 +293,7 @@ static int vir_xfer(dev_t minor, u64_t pos, iovec_t *iovec, int nr_req, panic("unable to allocate grant"); } - r = raw_xfer(minor, pos, iov_s, nr_req, write, exp, res); + raw_xfer(minor, pos, iov_s, nr_req, write, exp, res); for (i = 0; i < nr_req; i++) { iovec[i].iov_size = iov_s[i].iov_size; @@ -295,11 +301,9 @@ static int vir_xfer(dev_t minor, u64_t pos, iovec_t *iovec, int nr_req, if (cpf_revoke(iov_s[i].iov_grant) != OK) panic("unable to revoke grant"); } - - return r; } -static int simple_xfer(dev_t minor, u64_t pos, u8_t *buf, size_t size, +static void simple_xfer(dev_t minor, u64_t pos, u8_t *buf, size_t size, int write, ssize_t exp, result_t *res) { /* Perform a transfer involving a single buffer. @@ -309,7 +313,7 @@ static int simple_xfer(dev_t minor, u64_t pos, u8_t *buf, size_t size, iov.iov_addr = (vir_bytes) buf; iov.iov_size = size; - return vir_xfer(minor, pos, &iov, 1, write, exp, res); + vir_xfer(minor, pos, &iov, 1, write, exp, res); } static void alloc_buf_and_grant(u8_t **ptr, cp_grant_id_t *grant, @@ -499,7 +503,7 @@ static void bad_read2(void) * size exceed the per-operation size (128KB ?). On the other hand, we * then need to start checking partition sizes, possibly. */ - u8_t *buf_ptr, *buf2_ptr, *buf3_ptr; + u8_t *buf_ptr, *buf2_ptr, *buf3_ptr, c1, c2; size_t buf_size, buf2_size, buf3_size; cp_grant_id_t buf_grant, buf2_grant, buf3_grant, grant; u32_t buf_sum, buf2_sum, buf3_sum; @@ -598,12 +602,24 @@ static void bad_read2(void) buf_sum = fill_rand(buf_ptr, buf_size); buf2_sum = fill_rand(buf2_ptr, buf2_size); buf3_sum = fill_rand(buf3_ptr, buf3_size); + c1 = buf2_ptr[buf2_size - 1]; - raw_xfer(driver_minor, cvu64(0), iov, 3, FALSE, EINVAL, &res); + raw_xfer(driver_minor, cvu64(0), iov, 3, FALSE, BUF_SIZE * 3 - 1, + &res); - test_sum(buf_ptr, buf_size, buf_sum, TRUE, &res); - test_sum(buf2_ptr, buf2_size, buf2_sum, TRUE, &res); - test_sum(buf3_ptr, buf3_size, buf3_sum, TRUE, &res); + if (accept_result(&res, RESULT_BADSTATUS, EINVAL)) { + /* Do not test the first buffer, as it may contain a partial + * result. + */ + test_sum(buf2_ptr, buf2_size, buf2_sum, TRUE, &res); + test_sum(buf3_ptr, buf3_size, buf3_sum, TRUE, &res); + } else { + test_sum(buf_ptr, buf_size, buf_sum, FALSE, &res); + test_sum(buf2_ptr, buf2_size, buf2_sum, FALSE, &res); + test_sum(buf3_ptr, buf3_size, buf3_sum, FALSE, &res); + if (c1 != buf2_ptr[buf2_size - 1]) + set_result(&res, RESULT_CORRUPT, 0); + } got_result(&res, "word-unaligned size in iovec element"); @@ -611,13 +627,13 @@ static void bad_read2(void) memcpy(iov, iovt, sizeof(iovt)); iov[1].iov_grant = GRANT_INVALID; - buf_sum = fill_rand(buf_ptr, buf_size); + fill_rand(buf_ptr, buf_size); buf2_sum = fill_rand(buf2_ptr, buf2_size); buf3_sum = fill_rand(buf3_ptr, buf3_size); raw_xfer(driver_minor, cvu64(0), iov, 3, FALSE, EINVAL, &res); - test_sum(buf_ptr, buf_size, buf_sum, TRUE, &res); + /* Do not test the first buffer, as it may contain a partial result. */ test_sum(buf2_ptr, buf2_size, buf2_sum, TRUE, &res); test_sum(buf3_ptr, buf3_size, buf3_sum, TRUE, &res); @@ -641,7 +657,7 @@ static void bad_read2(void) accept_result(&res, RESULT_BADSTATUS, EPERM); - test_sum(buf_ptr, buf_size, buf_sum, TRUE, &res); + /* Do not test the first buffer, as it may contain a partial result. */ test_sum(buf2_ptr, buf2_size, buf2_sum, TRUE, &res); test_sum(buf3_ptr, buf3_size, buf3_sum, TRUE, &res); @@ -663,7 +679,7 @@ static void bad_read2(void) accept_result(&res, RESULT_BADSTATUS, EPERM); - test_sum(buf_ptr, buf_size, buf_sum, TRUE, &res); + /* Do not test the first buffer, as it may contain a partial result. */ test_sum(buf2_ptr, buf2_size, buf2_sum, TRUE, &res); test_sum(buf3_ptr, buf3_size, buf3_sum, TRUE, &res); @@ -683,12 +699,25 @@ static void bad_read2(void) buf_sum = fill_rand(buf_ptr, buf_size); buf2_sum = fill_rand(buf2_ptr, buf2_size); buf3_sum = fill_rand(buf3_ptr, buf3_size); + c1 = buf2_ptr[0]; + c2 = buf2_ptr[buf2_size - 1]; - raw_xfer(driver_minor, cvu64(0), iov, 3, FALSE, EINVAL, &res); + raw_xfer(driver_minor, cvu64(0), iov, 3, FALSE, BUF_SIZE * 3 - 2, + &res); - test_sum(buf_ptr, buf_size, buf_sum, TRUE, &res); - test_sum(buf2_ptr, buf2_size, buf2_sum, TRUE, &res); - test_sum(buf3_ptr, buf3_size, buf3_sum, TRUE, &res); + if (accept_result(&res, RESULT_BADSTATUS, EINVAL)) { + /* Do not test the first buffer, as it may contain a partial + * result. + */ + test_sum(buf2_ptr, buf2_size, buf2_sum, TRUE, &res); + test_sum(buf3_ptr, buf3_size, buf3_sum, TRUE, &res); + } else { + test_sum(buf_ptr, buf_size, buf_sum, FALSE, &res); + test_sum(buf2_ptr, buf2_size, buf2_sum, FALSE, &res); + test_sum(buf3_ptr, buf3_size, buf3_sum, FALSE, &res); + if (c1 != buf2_ptr[0] || c2 != buf2_ptr[buf2_size - 1]) + set_result(&res, RESULT_CORRUPT, 0); + } got_result(&res, "word-unaligned buffer in iovec element");