get_my_path_linux.c 961 B

1234567891011121314151617181920212223242526272829303132
  1. /*
  2. * Copyright (C) 2007 The Android Open Source Project
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. #include <sys/types.h>
  17. #include <unistd.h>
  18. #include <limits.h>
  19. #include <stdio.h>
  20. void get_my_path(char *exe, size_t maxLen)
  21. {
  22. char proc[64];
  23. snprintf(proc, sizeof proc, "/proc/%d/exe", getpid());
  24. int err = readlink(proc, exe, maxLen - 1);
  25. if(err > 0) {
  26. exe[err] = '\0';
  27. } else {
  28. exe[0] = '\0';
  29. }
  30. }