Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
io_uring/mock: allow to choose FMODE_NOWAIT
Add an option to choose whether the file supports FMODE_NOWAIT, that
changes the execution path io_uring request takes.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/1e532565b05a05b23589d237c24ee1a3d90c2fd9.1750599274.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
authored by
Pavel Begunkov
and committed by
Jens Axboe
2f71d238
d1aa0346
+12
-1
+5
include/uapi/linux/io_uring/mock_file.h
+5
include/uapi/linux/io_uring/mock_file.h
···
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enum {
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IORING_MOCK_FEAT_CMD_COPY,
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IORING_MOCK_FEAT_RW_ZERO,
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IORING_MOCK_FEAT_RW_NOWAIT,
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IORING_MOCK_FEAT_END,
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};
···
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struct io_uring_mock_probe {
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__u64 features;
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__u64 __resv[9];
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};
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enum {
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IORING_MOCK_CREATE_F_SUPPORT_NOWAIT = 1,
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};
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struct io_uring_mock_create {
+7
-1
io_uring/mock_file.c
+7
-1
io_uring/mock_file.c
···
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.llseek = io_mock_llseek,
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};
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+
#define IO_VALID_CREATE_FLAGS (IORING_MOCK_CREATE_F_SUPPORT_NOWAIT)
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+
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static int io_create_mock_file(struct io_uring_cmd *cmd, unsigned int issue_flags)
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{
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const struct io_uring_sqe *sqe = cmd->sqe;
···
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memset(&mc, 0, sizeof(mc));
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if (copy_from_user(&mc, uarg, uarg_size))
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return -EFAULT;
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-
if (!mem_is_zero(mc.__resv, sizeof(mc.__resv)) || mc.flags)
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if (!mem_is_zero(mc.__resv, sizeof(mc.__resv)))
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return -EINVAL;
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if (mc.flags & ~IO_VALID_CREATE_FLAGS)
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return -EINVAL;
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if (mc.file_size > SZ_1G)
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return -EINVAL;
···
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file->f_mode |= FMODE_READ | FMODE_CAN_READ |
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FMODE_WRITE | FMODE_CAN_WRITE |
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FMODE_LSEEK;
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if (mc.flags & IORING_MOCK_CREATE_F_SUPPORT_NOWAIT)
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file->f_mode |= FMODE_NOWAIT;
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mc.out_fd = fd;
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if (copy_to_user(uarg, &mc, uarg_size)) {