1io_uring_prep_close(3)          liburing Manual         io_uring_prep_close(3)
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NAME

6       io_uring_prep_close - prepare a file descriptor close request
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SYNOPSIS

9       #include <liburing.h>
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11       void io_uring_prep_close(struct io_uring_sqe *sqe,
12                                 int fd);
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14       void io_uring_prep_close_direct(struct io_uring_sqe *sqe,
15                                       unsigned file_index);
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DESCRIPTION

18       The  io_uring_prep_close(3) function prepares a close request. The sub‐
19       mission queue entry sqe is setup to close the file descriptor indicated
20       by fd.
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22       For  a  direct descriptor close request, the offset is specified by the
23       file_index argument instead of the fd.  This is identical  to  unregis‐
24       tering the direct descriptor, and is provided as a convenience.
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26       These  functions  prepare  an async close(2) request. See that man page
27       for details.
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RETURN VALUE

31       None
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ERRORS

34       The CQE res field will contain the result of the operation. See the re‐
35       lated man page for details on possible values. Note that where synchro‐
36       nous system calls will return -1 on failure and set errno to the actual
37       error value, io_uring never uses errno.  Instead it returns the negated
38       errno directly in the CQE res field.
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SEE ALSO

41       io_uring_get_sqe(3), io_uring_submit(3), close(2)
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45liburing-2.2                    March 13, 2022          io_uring_prep_close(3)