Fix: Only save kernel enablers in session configuration

[lttng-tools.git] / src / bin / lttng-sessiond / syscall.c

diff --git a/src/bin/lttng-sessiond/syscall.c b/src/bin/lttng-sessiond/syscall.c
index 4c491995a1295c648d459d1f5a1b42aabab86123..7ae6682bb419c06c6cdd8231c5c92d0dbef475c4 100644 (file)
--- a/src/bin/lttng-sessiond/syscall.c
+++ b/src/bin/lttng-sessiond/syscall.c
@@ -333,113 +333,3 @@ error:
        rcu_read_unlock();
        return ret;
 }
-
-/*
- * Add enabled syscall to the events list using the given kernel channel.
- *
- * Return the number of entry of the events array that is different from size
- * if the array grows. On error, return negative value and events is untouched.
- */
-ssize_t syscall_list_channel(struct ltt_kernel_channel *kchan,
-               struct lttng_event **_events, size_t size)
-{
-       int err, i;
-       size_t new_size;
-       ssize_t ret, count;
-       char *mask = NULL;
-       uint32_t len;
-       struct lttng_event *events = NULL;
-       /* Hash table used to filter duplicate out. */
-       struct lttng_ht *syscalls_ht = NULL;
-
-       assert(kchan);
-
-       /* Get syscall mask from the kernel tracer. */
-       err = kernel_syscall_mask(kchan->fd, &mask, &len);
-       if (err < 0) {
-               ret = err;
-               goto error;
-       }
-
-       ret = init_syscall_ht(&syscalls_ht);
-       if (ret < 0) {
-               goto error;
-       }
-
-       count = new_size = size;
-       events = *_events;
-
-       for (i = 0; i < len; i++) {
-               unsigned char val;
-               struct syscall *ksyscall;
-
-               bitfield_read_be(mask, unsigned char, i, 1, &val);
-               if (!val) {
-                       /* Syscall is disabled, continue the loop. */
-                       continue;
-               }
-
-               /* Skip empty syscall. */
-               if (*syscall_table[i].name == '\0') {
-                       continue;
-               }
-
-               /* Syscall is enabled thus add it to the events list. */
-
-               if (count >= new_size) {
-                       struct lttng_event *new_events;
-
-                       /* Get the maximum here since count can be 0. */
-                       new_size = max(count << 1, 1);
-                       DBG3("Listing syscall realloc events array from %zu to %zu", count,
-                                       new_size);
-                       new_events = realloc(events, new_size * sizeof(*new_events));
-                       if (!new_events) {
-                               PERROR("realloc kernel events list");
-                               ret = -ENOMEM;
-                               goto error;
-                       }
-                       memset(new_events + count, 0,
-                                       (new_size - count) * sizeof(*new_events));
-                       events = new_events;
-               }
-
-               rcu_read_lock();
-               ksyscall = lookup_syscall(syscalls_ht, syscall_table[i].name);
-               if (ksyscall) {
-                       update_event_syscall_bitness(events, i, ksyscall->index);
-                       rcu_read_unlock();
-                       continue;
-               }
-               ksyscall = NULL;
-               rcu_read_unlock();
-
-               ret = add_syscall_to_ht(syscalls_ht, i, count);
-               if (ret < 0) {
-                       goto error;
-               }
-
-               update_event_syscall_bitness(events, i, count);
-               strncpy(events[count].name, syscall_table[i].name,
-                               sizeof(events[count].name));
-               events[count].enabled = 1;
-               events[count].type = LTTNG_EVENT_SYSCALL;
-               count++;
-       }
-
-       rcu_read_lock();
-       destroy_syscall_ht(syscalls_ht);
-       rcu_read_unlock();
-
-       *_events = events;
-
-       return count;
-
-error:
-       rcu_read_lock();
-       destroy_syscall_ht(syscalls_ht);
-       rcu_read_unlock();
-
-       free(events);
-       return ret;
-}