cleanup unused code

src/trace_exec.cc

@@ -315,70 +315,6 @@ void read_maybe_relative_pathname_from_tracee(pid_t pid, char *cwd, __u64 addr,
   }
 }
 
-void join_path(const char *path1, const char *path2, char *fullpath, size_t fullpath_size)
-{
-  char *path1_segments[PATH_MAX];
-  char *path2_segments[PATH_MAX];
-  char *fullpath_segments[PATH_MAX];
-  int path1_segment_count = 0;
-  int path2_segment_count = 0;
-  int fullpath_segment_count = 0;
-
-  char *token = strtok((char *)path1, "/");
-  while (token != NULL)
-  {
-    path1_segments[path1_segment_count++] = token;
-    token = strtok(NULL, "/");
-  }
-
-  token = strtok((char *)path2, "/");
-  while (token != NULL)
-  {
-    path2_segments[path2_segment_count++] = token;
-    token = strtok(NULL, "/");
-  }
-
-  for (int i = 0; i < path1_segment_count; i++)
-  {
-    if (strcmp(path1_segments[i], "..") == 0)
-    {
-      if (fullpath_segment_count > 0)
-      {
-        fullpath_segment_count--;
-      }
-    }
-    else if (strcmp(path1_segments[i], ".") != 0)
-    {
-      fullpath_segments[fullpath_segment_count++] = path1_segments[i];
-    }
-  }
-
-  for (int i = 0; i < path2_segment_count; i++)
-  {
-    if (strcmp(path2_segments[i], "..") == 0)
-    {
-      if (fullpath_segment_count > 0)
-      {
-        fullpath_segment_count--;
-      }
-    }
-    else if (strcmp(path2_segments[i], ".") != 0)
-    {
-      fullpath_segments[fullpath_segment_count++] = path2_segments[i];
-    }
-  }
-
-  fullpath[0] = '\0';
-  for (int i = 0; i < fullpath_segment_count; i++)
-  {
-    if (i > 0)
-    {
-      strncat(fullpath, "/", fullpath_size);
-    }
-    strncat(fullpath, fullpath_segments[i], fullpath_size);
-  }
-}
-
 void parse_dirfd_pathname_from_tracee(pid_t pid, __u64 dirfd, __u64 pathname, char *fullpath, size_t fullpath_size)
 {
   char path[PATH_MAX];