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9dc306b1db
Signal an error for file-oriented errors that are not tame errors like ENOENT and ENOTDIR (Bug#37389). Do this for primitives exposed to Lisp; the lower level internal C API merely makes errno values available to higher-level C code. * doc/lispref/files.texi (Testing Accessibility) (File Attributes, Extended Attributes): Do not say that the functions return nil when the return value cannot be determined. * etc/NEWS: Mention the change. * src/dired.c (Ffile_attributes): Fix doc string confusion about opening a file vs getting its attributes. (file_attributes): Signal serious errors. * src/fileio.c (check_existing, check_executable) (check_writable): Remove. All callers changed to use check_file_access or file_access_p. (file_access_p, file_metadata_errno, file_attribute_errno) (file_test_errno, check_file_access, check_emacs_readlinkat): New functions. * src/fileio.c (Ffile_executable_p, Ffile_readable_p) (Ffile_name_case_insensitive_p, Frename_file, Ffile_exists_p): (Ffile_symlink_p, Ffile_directory_p) (Ffile_accessible_directory_p, Ffile_regular_p) (Ffile_selinux_context, Ffile_acl, Ffile_modes) (Ffile_newer_than_file_p, Fset_visited_file_modtime) (Ffile_system_info): * src/filelock.c (unlock_file, Ffile_locked_p): * src/lread.c (Fload): Signal serious errors. * src/fileio.c (Ffile_writable_p): Remove unnecessary CHECK_STRING. (emacs_readlinkat): Now static. * src/filelock.c (current_lock_owner, lock_if_free): Return a positive errno on error, and the negative of the old old value on success. All callers changed. * src/lread.c (openp): Propagate serious errno values to caller. |
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