• Paul Eggert's avatar
    Clean up errno reporting and fix some errno-reporting bugs. · a773ed9a
    Paul Eggert authored
    * callproc.c (Fcall_process):
    * fileio.c (Fcopy_file, Finsert_file_contents, Fwrite_region):
    * process.c (create_process, Fmake_network_process):
    * unexaix.c (report_error):
    * unexcoff.c (report_error):
    Be more careful about reporting the errno of failed operations.
    The code previously reported the wrong errno sometimes.
    Also, prefer report_file_errno to setting errno + report_file_error.
    (Fcall_process): Look at openp return value rather than at path,
    as that's a bit faster and clearer when there's a numeric predicate.
    * fileio.c (report_file_errno): New function, with most of the
    old contents of report_file_error.
    (report_file_error): Use it.
    (Ffile_exists_p, Ffile_accessible_directory_p):
    Set errno to 0 when it is junk.
    * fileio.c (Faccess_file):
    * image.c (x_create_bitmap_from_file):
    Use faccessat rather than opening the file, to avoid the hassle of
    having a file descriptor open.
    * lisp.h (report_file_errno): New decl.
    * lread.c (Flocate_file...
process.c 211 KB