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queue: ensure io_uring_submit() returns the right error

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We weren't passing back -errno for the system call failure.
This meant any error got turned into EPERM as far as the
caller was concerned.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2019-03-05 20:12:48 -07:00
parent b080d0680c
commit 8260029608
1 changed files with 6 additions and 1 deletions
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7
src/queue.c
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@@ -81,6 +81,7 @@ int io_uring_submit(struct io_uring *ring)
struct io_uring_sq *sq = &ring->sq; struct io_uring_sq *sq = &ring->sq;
const unsigned mask = *sq->kring_mask; const unsigned mask = *sq->kring_mask;
unsigned ktail, ktail_next, submitted; unsigned ktail, ktail_next, submitted;
int ret;
/* /*
* If we have pending IO in the kring, submit it first. We need a * If we have pending IO in the kring, submit it first. We need a
@@ -132,8 +133,12 @@ int io_uring_submit(struct io_uring *ring)
} }
submit: submit:
return io_uring_enter(ring->ring_fd, submitted, 0, ret = io_uring_enter(ring->ring_fd, submitted, 0,
IORING_ENTER_GETEVENTS, NULL); IORING_ENTER_GETEVENTS, NULL);
if (ret < 0)
return -errno;
return 0;
} }
/* /*