Jens Axboe ba04291eb6
io_uring: allow use of offset == -1 to mean file position ...
This behaves like preadv2/pwritev2 with offset == -1, it'll use (and
update) the current file position. This obviously comes with the caveat
that if the application has multiple read/writes in flight, then the
end result will not be as expected. This is similar to threads sharing
a file descriptor and doing IO using the current file position.
Since this feature isn't easily detectable by doing a read or write,
add a feature flags, IORING_FEAT_RW_CUR_POS, to allow applications to
detect presence of this feature.
Reported-by: 李通洲 <carter.li@eoitek.com >
Signed-off-by: Jens Axboe <axboe@kernel.dk >
2020-01-20 17:03:59 -07:00
2019-09-27 15:10:34 -07:00
2019-07-19 11:33:22 -07:00
2019-11-18 14:26:43 +01:00
2020-01-14 09:56:31 -08:00
2019-12-05 17:11:48 -08:00
2019-08-30 07:27:17 -07:00
2019-08-30 07:27:17 -07:00
2020-01-17 11:21:05 -08:00
2019-05-24 17:27:11 +02:00
2019-12-09 20:55:10 +01:00
2019-12-23 09:04:44 -06:00
2019-09-19 09:42:37 -07:00
2019-11-06 18:36:01 +01:00
2019-11-23 21:44:49 -05:00
2019-12-09 10:36:44 -08:00
2019-12-06 09:06:58 -08:00
2019-09-03 09:30:56 -04:00
2019-07-12 17:37:53 -07:00
2019-12-01 13:46:15 -08:00
2019-07-19 10:42:02 -07:00
2019-08-30 07:27:17 -07:00
2019-12-11 12:25:32 -08:00
2019-11-11 09:21:59 -05:00
2019-11-30 11:16:07 -08:00
2019-12-22 10:41:48 -08:00
2019-12-01 13:46:15 -08:00
2019-10-23 17:23:43 +02:00
2019-08-30 07:27:17 -07:00
2019-07-10 18:43:43 -07:00
2020-01-16 11:09:36 +01:00
2019-12-05 13:20:11 -08:00
2019-05-21 10:50:46 +02:00
2019-07-16 19:23:23 -07:00
2019-05-12 17:52:13 -04:00
2019-10-23 17:23:46 +02:00
2020-01-03 10:39:08 -08:00
2019-12-05 07:41:16 -08:00
2019-09-19 09:42:37 -07:00
2019-11-30 10:53:02 -08:00
2019-11-29 11:29:58 +01:00
2019-09-19 09:42:37 -07:00
2019-12-06 09:06:58 -08:00
2019-11-03 21:28:45 -05:00
2019-08-30 07:27:17 -07:00
2020-01-15 01:36:06 -05:00
2019-05-21 10:50:46 +02:00
2019-12-07 16:56:00 -08:00
2019-10-23 17:23:46 +02:00
2019-05-21 10:50:46 +02:00
2019-12-18 00:03:01 -05:00
2019-09-26 10:10:44 -07:00
2020-01-04 13:55:09 -08:00
2019-08-30 08:11:25 -07:00
2019-07-19 10:42:02 -07:00
2019-12-04 08:52:55 -05:00
2019-12-14 11:13:54 -08:00
2020-01-19 19:47:04 -07:00
2020-01-08 17:05:45 -08:00
2019-08-30 07:27:17 -07:00
2019-08-30 07:27:17 -07:00
2019-12-18 00:03:01 -05:00
2019-09-12 21:05:34 -04:00
2019-11-05 12:25:22 +01:00
2019-09-19 10:06:57 -07:00
2019-09-19 10:06:57 -07:00
2019-07-19 10:42:02 -07:00
2019-08-30 07:27:18 -07:00
2019-10-12 20:49:07 -04:00
2019-11-17 22:22:54 +01:00
2019-09-04 18:19:43 +02:00
2019-09-19 09:42:37 -07:00
2019-09-17 11:48:24 -04:00
2019-12-09 10:36:44 -08:00
2019-12-20 08:07:31 -08:00
2019-12-01 14:00:59 -08:00
2019-07-19 10:42:02 -07:00
2019-08-30 07:27:17 -07:00
2019-05-21 10:50:45 +02:00
2019-11-15 14:38:29 +01:00
2019-12-04 19:44:13 -08:00
2019-05-21 10:50:45 +02:00
2019-07-16 19:23:22 -07:00
2019-07-19 10:42:02 -07:00
2019-05-21 10:50:45 +02:00
2019-12-02 18:49:30 -07:00
2020-01-09 08:16:12 -07:00
2020-01-06 20:10:26 +01:00
2019-11-15 14:38:29 +01:00
2019-12-02 14:46:22 -08:00
2019-06-19 17:09:55 +02:00
2019-08-03 07:02:01 -07:00
2019-08-30 19:31:09 -04:00
2019-11-30 10:44:49 -08:00
2019-12-08 11:08:28 -08:00
2019-05-21 10:50:45 +02:00
2020-01-04 13:55:09 -08:00
2019-12-18 00:03:01 -05:00
2019-05-21 10:50:45 +02:00
2019-12-04 19:44:13 -08:00
2019-12-03 12:20:25 -08:00
2019-12-08 11:08:28 -08:00
2019-08-07 21:51:47 -04:00
2019-08-19 11:00:39 -04:00
2020-01-20 17:01:53 -07:00
2019-02-28 03:29:26 -05:00
2019-09-06 21:28:49 +02:00
2019-09-12 21:06:14 -04:00
2019-07-16 22:52:37 -04:00
2019-05-21 10:50:45 +02:00
2019-01-21 17:48:13 +01:00
2019-11-08 13:37:24 -07:00
2019-07-19 10:42:02 -07:00
2019-12-18 00:03:01 -05:00
2020-01-20 17:03:54 -07:00
2020-01-20 17:03:59 -07:00
2020-01-20 17:03:59 -07:00
2020-01-20 17:03:59 -07:00
2019-12-02 14:46:22 -08:00
2019-10-29 12:43:00 -06:00
2019-06-24 09:16:47 +10:00
2019-10-14 15:04:01 -07:00
2019-12-29 09:00:58 -05:00
2019-10-29 12:43:00 -06:00
2019-05-21 10:50:45 +02:00
2019-07-16 22:52:37 -04:00
2020-01-09 08:16:12 -07:00
2020-01-19 19:47:04 -07:00
2020-01-04 13:55:09 -08:00
2019-05-30 11:26:32 -07:00
2020-01-19 19:47:04 -07:00
2020-01-20 17:01:53 -07:00
2019-12-22 09:47:47 -08:00
2019-06-17 17:36:09 -04:00
2019-05-30 11:29:53 -07:00
2020-01-04 13:55:09 -08:00
2019-09-06 21:28:49 +02:00
2019-08-16 18:43:24 -07:00
2019-10-18 18:41:16 -04:00
2019-11-15 14:38:29 +01:00
2019-08-13 16:06:52 -07:00
2019-04-08 18:21:02 -05:00
2019-12-07 13:21:01 -08:00
2019-05-21 10:50:45 +02:00
2020-01-20 17:03:54 -07:00
2019-10-03 14:21:35 -07:00
2019-12-18 00:03:01 -05:00
2019-05-14 09:47:50 -07:00
2019-11-15 14:38:30 +01:00
2019-12-01 20:36:41 -08:00
2019-11-15 14:38:29 +01:00
2019-05-21 10:50:45 +02:00
ba04291eb6