version.c 1.3 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * linux/init/version.c
  4. *
  5. * Copyright (C) 1992 Theodore Ts'o
  6. *
  7. * May be freely distributed as part of Linux.
  8. */
  9. #include <generated/compile.h>
  10. #include <linux/build-salt.h>
  11. #include <linux/elfnote-lto.h>
  12. #include <linux/export.h>
  13. #include <linux/init.h>
  14. #include <linux/printk.h>
  15. #include <linux/uts.h>
  16. #include <linux/utsname.h>
  17. #include <linux/proc_ns.h>
  18. static int __init early_hostname(char *arg)
  19. {
  20. size_t bufsize = sizeof(init_uts_ns.name.nodename);
  21. size_t maxlen = bufsize - 1;
  22. ssize_t arglen;
  23. arglen = strscpy(init_uts_ns.name.nodename, arg, bufsize);
  24. if (arglen < 0) {
  25. pr_warn("hostname parameter exceeds %zd characters and will be truncated",
  26. maxlen);
  27. }
  28. return 0;
  29. }
  30. early_param("hostname", early_hostname);
  31. const char linux_proc_banner[] =
  32. "%s version %s"
  33. " (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ")"
  34. " (" LINUX_COMPILER ") %s\n";
  35. BUILD_SALT;
  36. BUILD_LTO_INFO;
  37. /*
  38. * init_uts_ns and linux_banner contain the build version and timestamp,
  39. * which are really fixed at the very last step of build process.
  40. * They are compiled with __weak first, and without __weak later.
  41. */
  42. struct uts_namespace init_uts_ns __weak;
  43. const char linux_banner[] __weak;
  44. #include "version-timestamp.c"
  45. EXPORT_SYMBOL_GPL(init_uts_ns);