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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | SEE ALSO | COLOPHON |
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io_uring_prep_ftruncate(3) liburing Manual io_uring_prep_ftruncate(3)
io_uring_prep_ftruncate - prepare an ftruncate request
#include <liburing.h>
void io_uring_prep_ftruncate(struct io_uring_sqe *sqe,
int fd,
loff_t len);
The io_uring_prep_ftruncate(3) function prepares an ftruncate
request. The submission queue entry sqe is setup to use the file
descriptor fd that should get truncated to the length indicated by
the len argument.
Applications must define _GNU_SOURCE to obtain the definition of
this helper, as loff_t will not be defined without it.
None
The CQE res field will contain the result of the operation. See
the related man page for details on possible values. Note that
where synchronous system calls will return -1 on failure and set
errno to the actual error value, io_uring never uses errno.
Instead it returns the negated errno directly in the CQE res
field.
io_uring_get_sqe(3), io_uring_submit(3), ftruncate(2),
This page is part of the liburing (A library for io_uring)
project. Information about the project can be found at
⟨https://github.com/axboe/liburing⟩. If you have a bug report for
this manual page, send it to [email protected]. This page
was obtained from the project's upstream Git repository
⟨https://github.com/axboe/liburing⟩ on 2025-08-11. (At that time,
the date of the most recent commit that was found in the
repository was 2025-08-02.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
liburing-2.6 January 23, 2024 io_uring_prep_ftruncate(3)
Pages that refer to this page: io_uring_prep_ftruncate(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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