Merge changes I928ddebc,Iade322a2
* changes:
storageproxyd: Add logging of failed RPMB transactions
storageproxyd: Add file handle param to debug buffer print
diff --git a/trusty/storage/proxy/rpmb.c b/trusty/storage/proxy/rpmb.c
index b59fb67..a40105f 100644
--- a/trusty/storage/proxy/rpmb.c
+++ b/trusty/storage/proxy/rpmb.c
@@ -16,7 +16,10 @@
#include <errno.h>
#include <fcntl.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_proto.h>
#include <scsi/sg.h>
+#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
@@ -104,22 +107,18 @@
static const char* UFS_WAKE_LOCK_NAME = "ufs_seq_wakelock";
-#ifdef RPMB_DEBUG
-
-static void print_buf(const char* prefix, const uint8_t* buf, size_t size) {
+static void print_buf(FILE* handle, const char* prefix, const uint8_t* buf, size_t size) {
size_t i;
- printf("%s @%p [%zu]", prefix, buf, size);
+ fprintf(handle, "%s @%p [%zu]", prefix, buf, size);
for (i = 0; i < size; i++) {
- if (i && i % 32 == 0) printf("\n%*s", (int)strlen(prefix), "");
- printf(" %02x", buf[i]);
+ if (i && i % 32 == 0) fprintf(handle, "\n%*s", (int)strlen(prefix), "");
+ fprintf(handle, " %02x", buf[i]);
}
- printf("\n");
- fflush(stdout);
+ fprintf(handle, "\n");
+ fflush(handle);
}
-#endif
-
static void set_sg_io_hdr(sg_io_hdr_t* io_hdrp, int dxfer_direction, unsigned char cmd_len,
unsigned char mx_sb_len, unsigned int dxfer_len, void* dxferp,
unsigned char* cmdp, void* sbp) {
@@ -135,6 +134,111 @@
io_hdrp->timeout = TIMEOUT;
}
+/* Returns false if the sense data was valid and no errors were present */
+static bool check_scsi_sense(const uint8_t* sense_buf, size_t len) {
+ uint8_t response_code = 0;
+ uint8_t sense_key = 0;
+ uint8_t additional_sense_code = 0;
+ uint8_t additional_sense_code_qualifier = 0;
+ uint8_t additional_length = 0;
+
+ if (!sense_buf || len == 0) {
+ ALOGE("Invalid SCSI sense buffer, length: %zu\n", len);
+ return false;
+ }
+
+ response_code = 0x7f & sense_buf[0];
+
+ if (response_code < 0x70 || response_code > 0x73) {
+ ALOGE("Invalid SCSI sense response code: %hhu\n", response_code);
+ return false;
+ }
+
+ if (response_code >= 0x72) {
+ /* descriptor format, SPC-6 4.4.2 */
+ if (len > 1) {
+ sense_key = 0xf & sense_buf[1];
+ }
+ if (len > 2) {
+ additional_sense_code = sense_buf[2];
+ }
+ if (len > 3) {
+ additional_sense_code_qualifier = sense_buf[3];
+ }
+ if (len > 7) {
+ additional_length = sense_buf[7];
+ }
+ } else {
+ /* fixed format, SPC-6 4.4.3 */
+ if (len > 2) {
+ sense_key = 0xf & sense_buf[2];
+ }
+ if (len > 7) {
+ additional_length = sense_buf[7];
+ }
+ if (len > 12) {
+ additional_sense_code = sense_buf[12];
+ }
+ if (len > 13) {
+ additional_sense_code_qualifier = sense_buf[13];
+ }
+ }
+
+ switch (sense_key) {
+ case NO_SENSE:
+ case 0x0f: /* COMPLETED, not present in kernel headers */
+ ALOGD("SCSI success with sense data: key=%hhu, asc=%hhu, ascq=%hhu\n", sense_key,
+ additional_sense_code, additional_sense_code_qualifier);
+ return true;
+ }
+
+ ALOGE("Unexpected SCSI sense data: key=%hhu, asc=%hhu, ascq=%hhu\n", sense_key,
+ additional_sense_code, additional_sense_code_qualifier);
+ print_buf(stderr, "sense buffer: ", sense_buf, len);
+ return false;
+}
+
+static void check_sg_io_hdr(const sg_io_hdr_t* io_hdrp) {
+ if (io_hdrp->status == 0 && io_hdrp->host_status == 0 && io_hdrp->driver_status == 0) {
+ return;
+ }
+
+ if (io_hdrp->status & 0x01) {
+ ALOGE("SG_IO received unknown status, LSB is set: %hhu", io_hdrp->status);
+ }
+
+ if (io_hdrp->masked_status != GOOD && io_hdrp->sb_len_wr > 0) {
+ bool sense_error = check_scsi_sense(io_hdrp->sbp, io_hdrp->sb_len_wr);
+ if (sense_error) {
+ ALOGE("Unexpected SCSI sense. masked_status: %hhu, host_status: %hu, driver_status: "
+ "%hu\n",
+ io_hdrp->masked_status, io_hdrp->host_status, io_hdrp->driver_status);
+ return;
+ }
+ }
+
+ switch (io_hdrp->masked_status) {
+ case GOOD:
+ break;
+ case CHECK_CONDITION:
+ /* handled by check_sg_sense above */
+ break;
+ default:
+ ALOGE("SG_IO failed with masked_status: %hhu, host_status: %hu, driver_status: %hu\n",
+ io_hdrp->masked_status, io_hdrp->host_status, io_hdrp->driver_status);
+ return;
+ }
+
+ if (io_hdrp->host_status != 0) {
+ ALOGE("SG_IO failed with host_status: %hu, driver_status: %hu\n", io_hdrp->host_status,
+ io_hdrp->driver_status);
+ }
+
+ if (io_hdrp->resid != 0) {
+ ALOGE("SG_IO resid was non-zero: %d\n", io_hdrp->resid);
+ }
+}
+
static int send_mmc_rpmb_req(int mmc_fd, const struct storage_rpmb_send_req* req) {
struct {
struct mmc_ioc_multi_cmd multi;
@@ -153,7 +257,7 @@
mmc_ioc_cmd_set_data((*cmd), write_buf);
#ifdef RPMB_DEBUG
ALOGI("opcode: 0x%x, write_flag: 0x%x\n", cmd->opcode, cmd->write_flag);
- print_buf("request: ", write_buf, req->reliable_write_size);
+ print_buf(stdout, "request: ", write_buf, req->reliable_write_size);
#endif
write_buf += req->reliable_write_size;
mmc.multi.num_of_cmds++;
@@ -169,7 +273,7 @@
mmc_ioc_cmd_set_data((*cmd), write_buf);
#ifdef RPMB_DEBUG
ALOGI("opcode: 0x%x, write_flag: 0x%x\n", cmd->opcode, cmd->write_flag);
- print_buf("request: ", write_buf, req->write_size);
+ print_buf(stdout, "request: ", write_buf, req->write_size);
#endif
write_buf += req->write_size;
mmc.multi.num_of_cmds++;
@@ -225,6 +329,7 @@
ALOGE("%s: ufs ioctl failed: %d, %s\n", __func__, rc, strerror(errno));
goto err_op;
}
+ check_sg_io_hdr(&io_hdr);
write_buf += req->reliable_write_size;
}
@@ -239,6 +344,7 @@
ALOGE("%s: ufs ioctl failed: %d, %s\n", __func__, rc, strerror(errno));
goto err_op;
}
+ check_sg_io_hdr(&io_hdr);
write_buf += req->write_size;
}
@@ -252,6 +358,7 @@
if (rc < 0) {
ALOGE("%s: ufs ioctl failed: %d, %s\n", __func__, rc, strerror(errno));
}
+ check_sg_io_hdr(&io_hdr);
}
err_op:
@@ -353,7 +460,7 @@
goto err_response;
}
#ifdef RPMB_DEBUG
- if (req->read_size) print_buf("response: ", read_buf, req->read_size);
+ if (req->read_size) print_buf(stdout, "response: ", read_buf, req->read_size);
#endif
if (msg->flags & STORAGE_MSG_FLAG_POST_COMMIT) {