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| author | Stefan Metzmacher <metze@samba.org> | 2022-08-11 09:11:16 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-08-12 17:01:00 -0600 |
| commit | 9c71d39aa0f40d4e6bfe14958045a42c722bd327 (patch) | |
| tree | c9ef83a7b7544d6ea0068c5eaae8ef0d2e0aed91 /io_uring | |
| parent | f2ccb5aed7bce1d8b3ed5b3385759a5509663028 (diff) | |
| download | lwn-9c71d39aa0f40d4e6bfe14958045a42c722bd327.tar.gz lwn-9c71d39aa0f40d4e6bfe14958045a42c722bd327.zip | |
io_uring: add missing BUILD_BUG_ON() checks for new io_uring_sqe fields
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Link: https://lore.kernel.org/r/ffcaf8dc4778db4af673822df60dbda6efdd3065.1660201408.git.metze@samba.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/io_uring.c | 19 | ||||
| -rw-r--r-- | io_uring/uring_cmd.c | 3 |
2 files changed, 19 insertions, 3 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index b54218da075c..ebfdb2212ec2 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -3885,13 +3885,15 @@ out_fput: static int __init io_uring_init(void) { -#define __BUILD_BUG_VERIFY_ELEMENT(stype, eoffset, etype, ename) do { \ +#define __BUILD_BUG_VERIFY_OFFSET_SIZE(stype, eoffset, esize, ename) do { \ BUILD_BUG_ON(offsetof(stype, ename) != eoffset); \ - BUILD_BUG_ON(sizeof(etype) != sizeof_field(stype, ename)); \ + BUILD_BUG_ON(sizeof_field(stype, ename) != esize); \ } while (0) #define BUILD_BUG_SQE_ELEM(eoffset, etype, ename) \ - __BUILD_BUG_VERIFY_ELEMENT(struct io_uring_sqe, eoffset, etype, ename) + __BUILD_BUG_VERIFY_OFFSET_SIZE(struct io_uring_sqe, eoffset, sizeof(etype), ename) +#define BUILD_BUG_SQE_ELEM_SIZE(eoffset, esize, ename) \ + __BUILD_BUG_VERIFY_OFFSET_SIZE(struct io_uring_sqe, eoffset, esize, ename) BUILD_BUG_ON(sizeof(struct io_uring_sqe) != 64); BUILD_BUG_SQE_ELEM(0, __u8, opcode); BUILD_BUG_SQE_ELEM(1, __u8, flags); @@ -3899,6 +3901,8 @@ static int __init io_uring_init(void) BUILD_BUG_SQE_ELEM(4, __s32, fd); BUILD_BUG_SQE_ELEM(8, __u64, off); BUILD_BUG_SQE_ELEM(8, __u64, addr2); + BUILD_BUG_SQE_ELEM(8, __u32, cmd_op); + BUILD_BUG_SQE_ELEM(12, __u32, __pad1); BUILD_BUG_SQE_ELEM(16, __u64, addr); BUILD_BUG_SQE_ELEM(16, __u64, splice_off_in); BUILD_BUG_SQE_ELEM(24, __u32, len); @@ -3917,13 +3921,22 @@ static int __init io_uring_init(void) BUILD_BUG_SQE_ELEM(28, __u32, statx_flags); BUILD_BUG_SQE_ELEM(28, __u32, fadvise_advice); BUILD_BUG_SQE_ELEM(28, __u32, splice_flags); + BUILD_BUG_SQE_ELEM(28, __u32, rename_flags); + BUILD_BUG_SQE_ELEM(28, __u32, unlink_flags); + BUILD_BUG_SQE_ELEM(28, __u32, hardlink_flags); + BUILD_BUG_SQE_ELEM(28, __u32, xattr_flags); + BUILD_BUG_SQE_ELEM(28, __u32, msg_ring_flags); BUILD_BUG_SQE_ELEM(32, __u64, user_data); BUILD_BUG_SQE_ELEM(40, __u16, buf_index); BUILD_BUG_SQE_ELEM(40, __u16, buf_group); BUILD_BUG_SQE_ELEM(42, __u16, personality); BUILD_BUG_SQE_ELEM(44, __s32, splice_fd_in); BUILD_BUG_SQE_ELEM(44, __u32, file_index); + BUILD_BUG_SQE_ELEM(44, __u16, notification_idx); + BUILD_BUG_SQE_ELEM(46, __u16, addr_len); BUILD_BUG_SQE_ELEM(48, __u64, addr3); + BUILD_BUG_SQE_ELEM_SIZE(48, 0, cmd); + BUILD_BUG_SQE_ELEM(56, __u64, __pad2); BUILD_BUG_ON(sizeof(struct io_uring_files_update) != sizeof(struct io_uring_rsrc_update)); diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index 478e86a9dfaf..8e0cc2d9205e 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -58,6 +58,9 @@ int io_uring_cmd_prep_async(struct io_kiocb *req) struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd); size_t cmd_size; + BUILD_BUG_ON(uring_cmd_pdu_size(0) != 16); + BUILD_BUG_ON(uring_cmd_pdu_size(1) != 80); + cmd_size = uring_cmd_pdu_size(req->ctx->flags & IORING_SETUP_SQE128); memcpy(req->async_data, ioucmd->cmd, cmd_size); |