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gh-57684: Add -P cmdline option and PYTHONSAFEPATH env var (#31542)

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Add the -P command line option and the PYTHONSAFEPATH environment
variable to not prepend a potentially unsafe path to sys.path.

* Add sys.flags.safe_path flag.
* Add PyConfig.safe_path member.
* Programs/_bootstrap_python.c uses config.safe_path=0.
* Update subprocess._optim_args_from_interpreter_flags() to handle
  the -P command line option.
* Modules/getpath.py sets safe_path to 1 if a "._pth" file is
  present.
This commit is contained in:
Victor Stinner 2022-05-06 01:34:11 +02:00 • committed by GitHub
parent f6dd14c653
commit ada8b6d1b1
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20 changed files with 174 additions and 35 deletions
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Include/cpython/initconfig.h
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@ -176,6 +176,7 @@ typedef struct PyConfig {
#endif
wchar_t *check_hash_pycs_mode;
int use_frozen_modules;
int safe_path;
/* --- Path configuration inputs ------------ */
int pathconfig_warnings;