lttng-ctl rotate: fix: possible unaligned access in packed structure

[lttng-tools.git] / src / lib / lttng-ctl / rotate.c

diff --git a/src/lib/lttng-ctl/rotate.c b/src/lib/lttng-ctl/rotate.c
index 5c5b1b70cc05b2eecee78809cce1309d716b9a14..bc3a63cc8aa67d8a0bd089e32b56677d0795039f 100644 (file)
--- a/src/lib/lttng-ctl/rotate.c
+++ b/src/lib/lttng-ctl/rotate.c
@@ -233,7 +233,7 @@ int lttng_rotate_session(const char *session_name,
                        sizeof(lsm.session.name));
 
        ret = lttng_ctl_ask_sessiond(&lsm, (void **) &rotate_return);
-       if (ret < 0) {
+       if (ret <= 0) {
                *rotation_handle = NULL;
                goto end;
        }
@@ -299,23 +299,33 @@ enum lttng_rotation_status lttng_rotation_update_schedule(
        switch (schedule->type) {
        case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD:
        {
+               uint64_t threshold;
+
                status = lttng_rotation_schedule_size_threshold_get_threshold(
-                               schedule, &lsm.u.rotation_set_schedule.value);
+                               schedule, &threshold);
                if (status != LTTNG_ROTATION_STATUS_OK) {
+                       if (status == LTTNG_ROTATION_STATUS_UNAVAILABLE) {
+                               status = LTTNG_ROTATION_STATUS_INVALID;
+                       }
                        goto end;
                }
-
+               lsm.u.rotation_set_schedule.value = threshold;
                lsm.u.rotation_set_schedule.set = !!add;
                break;
        }
        case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC:
        {
+               uint64_t period;
+
                status = lttng_rotation_schedule_periodic_get_period(
-                               schedule, &lsm.u.rotation_set_schedule.value);
+                               schedule, &period);
                if (status != LTTNG_ROTATION_STATUS_OK) {
+                       if (status == LTTNG_ROTATION_STATUS_UNAVAILABLE) {
+                               status = LTTNG_ROTATION_STATUS_INVALID;
+                       }
                        goto end;
                }
-
+               lsm.u.rotation_set_schedule.value = period;
                lsm.u.rotation_set_schedule.set = !!add;
                break;
        }
@@ -468,7 +478,8 @@ lttng_rotation_schedule_size_threshold_get_threshold(
        enum lttng_rotation_status status = LTTNG_ROTATION_STATUS_OK;
        struct lttng_rotation_schedule_size_threshold *size_schedule;
 
-       if (!schedule || !size_threshold_bytes) {
+       if (!schedule || !size_threshold_bytes ||
+                       schedule->type != LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD) {
                status = LTTNG_ROTATION_STATUS_INVALID;
                goto end;
        }
@@ -495,7 +506,8 @@ lttng_rotation_schedule_size_threshold_set_threshold(
        struct lttng_rotation_schedule_size_threshold *size_schedule;
 
        if (!schedule || size_threshold_bytes == 0 ||
-                       size_threshold_bytes == -1ULL) {
+                       size_threshold_bytes == -1ULL ||
+                       schedule->type != LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD) {
                status = LTTNG_ROTATION_STATUS_INVALID;
                goto end;
        }
@@ -532,7 +544,8 @@ lttng_rotation_schedule_periodic_get_period(
        enum lttng_rotation_status status = LTTNG_ROTATION_STATUS_OK;
        struct lttng_rotation_schedule_periodic *periodic_schedule;
 
-       if (!schedule || !period_us) {
+       if (!schedule || !period_us ||
+                       schedule->type != LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC) {
                status = LTTNG_ROTATION_STATUS_INVALID;
                goto end;
        }
@@ -558,7 +571,8 @@ lttng_rotation_schedule_periodic_set_period(
        enum lttng_rotation_status status = LTTNG_ROTATION_STATUS_OK;
        struct lttng_rotation_schedule_periodic *periodic_schedule;
 
-       if (!schedule || period_us == 0 || period_us == -1ULL) {
+       if (!schedule || period_us == 0 || period_us == -1ULL ||
+                       schedule->type != LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC) {
                status = LTTNG_ROTATION_STATUS_INVALID;
                goto end;
        }