diff options
Diffstat (limited to 'man/man3type/off_t.3type')
| -rw-r--r-- | man/man3type/off_t.3type | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/man/man3type/off_t.3type b/man/man3type/off_t.3type new file mode 100644 index 000000000..4b3838917 --- /dev/null +++ b/man/man3type/off_t.3type @@ -0,0 +1,92 @@ +.\" Copyright (c) 2020-2022 by Alejandro Colomar <alx@kernel.org> +.\" and Copyright (c) 2020 by Michael Kerrisk <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" +.TH off_t 3type (date) "Linux man-pages (unreleased)" +.SH NAME +off_t, off64_t, loff_t \- file sizes +.SH LIBRARY +Standard C library +.RI ( libc ) +.SH SYNOPSIS +.nf +.B #include <sys/types.h> +.P +.BR typedef " /* ... */ " off_t; +.P +.B #define _LARGEFILE64_SOURCE +.B #include <sys/types.h> +.P +.BR typedef " /* ... */ " off64_t; +.P +.B #define _GNU_SOURCE +.B #include <sys/types.h> +.P +.BR typedef " /* ... */ " loff_t; +.fi +.SH DESCRIPTION +.I off_t +is used for describing file sizes. +It is a signed integer type. +.P +.I off64_t +is a 64-bit version of the type, +used in glibc. +.P +.I loff_t +is a 64-bit version of the type, +introduced by the Linux kernel. +.SH STANDARDS +.TP +.I off_t +POSIX.1-2008. +.TP +.I off64_t +GNU and some BSDs. +.TP +.I loff_t +Linux. +.SH VERSIONS +.TP +.I off_t +POSIX.1-2001. +.P +.I <aio.h> +and +.I <stdio.h> +define +.I off_t +since POSIX.1-2008. +.SH NOTES +On some architectures, +the width of +.I off_t +can be controlled with the feature test macro +.BR _FILE_OFFSET_BITS . +.P +The following headers also provide +.IR off_t : +.IR <aio.h> , +.IR <fcntl.h> , +.IR <stdio.h> , +.IR <sys/mman.h> , +.IR <sys/stat.h> , +and +.IR <unistd.h> . +.SH SEE ALSO +.BR copy_file_range (2), +.BR llseek (2), +.BR lseek (2), +.BR mmap (2), +.BR posix_fadvise (2), +.BR pread (2), +.BR readahead (2), +.BR sync_file_range (2), +.BR truncate (2), +.BR fseeko (3), +.BR lockf (3), +.BR lseek64 (3), +.BR posix_fallocate (3), +.BR feature_test_macros (7) |