Hide most of the implementation of `struct rb_io`. (#6511)

* Add rb_io_path and rb_io_open_descriptor. * Use rb_io_open_descriptor to create PTY objects * Rename FMODE_PREP -> FMODE_EXTERNAL and expose it FMODE_PREP I believe refers to the concept of a "pre-prepared" file, but FMODE_EXTERNAL is clearer about what the file descriptor represents and aligns with language in the IO::Buffer module. * Ensure that rb_io_open_descriptor closes the FD if it fails If FMODE_EXTERNAL is not set, then it's guaranteed that Ruby will be responsible for closing your file, eventually, if you pass it to rb_io_open_descriptor, even if it raises an exception. * Rename IS_EXTERNAL_FD -> RUBY_IO_EXTERNAL_P * Expose `rb_io_closed_p`. * Add `rb_io_mode` to get IO mode. --------- Co-authored-by: KJ Tsanaktsidis <ktsanaktsidis@zendesk.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/debug.c b/debug.c
index d3f41f1a3a..b5cba590ba 100644
--- a/debug.c
+++ b/debug.c
@@ -70,7 +70,7 @@ const union {
 RUBY_FMODE_NOREVLOOKUP = 0x00000100,
 RUBY_FMODE_TRUNC = FMODE_TRUNC,
 RUBY_FMODE_TEXTMODE = FMODE_TEXTMODE,
- RUBY_FMODE_PREP = 0x00010000,
+ RUBY_FMODE_EXTERNAL = 0x00010000,
 RUBY_FMODE_SETENC_BY_BOM = FMODE_SETENC_BY_BOM,
 RUBY_FMODE_UNIX = 0x00200000,
 RUBY_FMODE_INET = 0x00400000,