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Diffstat (limited to 'REORG.TODO/misc/sys/uio.h')
| -rw-r--r-- | REORG.TODO/misc/sys/uio.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/REORG.TODO/misc/sys/uio.h b/REORG.TODO/misc/sys/uio.h new file mode 100644 index 0000000000..66c22f04f6 --- /dev/null +++ b/REORG.TODO/misc/sys/uio.h @@ -0,0 +1,163 @@ +/* Copyright (C) 1991-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _SYS_UIO_H +#define _SYS_UIO_H 1 + +#include <features.h> + +#include <sys/types.h> + +__BEGIN_DECLS + +/* This file defines `struct iovec'. */ +#include <bits/uio.h> + + +/* Read data from file descriptor FD, and put the result in the + buffers described by IOVEC, which is a vector of COUNT 'struct iovec's. + The buffers are filled in the order specified. + Operates just like 'read' (see <unistd.h>) except that data are + put in IOVEC instead of a contiguous buffer. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern ssize_t readv (int __fd, const struct iovec *__iovec, int __count) + __wur; + +/* Write data pointed by the buffers described by IOVEC, which + is a vector of COUNT 'struct iovec's, to file descriptor FD. + The data is written in the order specified. + Operates just like 'write' (see <unistd.h>) except that the data + are taken from IOVEC instead of a contiguous buffer. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern ssize_t writev (int __fd, const struct iovec *__iovec, int __count) + __wur; + + +#ifdef __USE_MISC +# ifndef __USE_FILE_OFFSET64 +/* Read data from file descriptor FD at the given position OFFSET + without change the file pointer, and put the result in the buffers + described by IOVEC, which is a vector of COUNT 'struct iovec's. + The buffers are filled in the order specified. Operates just like + 'pread' (see <unistd.h>) except that data are put in IOVEC instead + of a contiguous buffer. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern ssize_t preadv (int __fd, const struct iovec *__iovec, int __count, + __off_t __offset) __wur; + +/* Write data pointed by the buffers described by IOVEC, which is a + vector of COUNT 'struct iovec's, to file descriptor FD at the given + position OFFSET without change the file pointer. The data is + written in the order specified. Operates just like 'pwrite' (see + <unistd.h>) except that the data are taken from IOVEC instead of a + contiguous buffer. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern ssize_t pwritev (int __fd, const struct iovec *__iovec, int __count, + __off_t __offset) __wur; + +# else +# ifdef __REDIRECT +extern ssize_t __REDIRECT (preadv, (int __fd, const struct iovec *__iovec, + int __count, __off64_t __offset), + preadv64) __wur; +extern ssize_t __REDIRECT (pwritev, (int __fd, const struct iovec *__iovec, + int __count, __off64_t __offset), + pwritev64) __wur; +# else +# define preadv preadv64 +# define pwritev pwritev64 +# endif +# endif + +# ifdef __USE_LARGEFILE64 +/* Read data from file descriptor FD at the given position OFFSET + without change the file pointer, and put the result in the buffers + described by IOVEC, which is a vector of COUNT 'struct iovec's. + The buffers are filled in the order specified. Operates just like + 'pread' (see <unistd.h>) except that data are put in IOVEC instead + of a contiguous buffer. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern ssize_t preadv64 (int __fd, const struct iovec *__iovec, int __count, + __off64_t __offset) __wur; + +/* Write data pointed by the buffers described by IOVEC, which is a + vector of COUNT 'struct iovec's, to file descriptor FD at the given + position OFFSET without change the file pointer. The data is + written in the order specified. Operates just like 'pwrite' (see + <unistd.h>) except that the data are taken from IOVEC instead of a + contiguous buffer. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern ssize_t pwritev64 (int __fd, const struct iovec *__iovec, int __count, + __off64_t __offset) __wur; +# endif +#endif /* Use misc. */ + + +#ifdef __USE_GNU +# ifndef __USE_FILE_OFFSET64 +/* Same as preadv but with an additional flag argumenti defined at uio.h. */ +extern ssize_t preadv2 (int __fp, const struct iovec *__iovec, int __count, + __off_t __offset, int ___flags) __wur; + +/* Same as preadv but with an additional flag argument defined at uio.h. */ +extern ssize_t pwritev2 (int __fd, const struct iovec *__iodev, int __count, + __off_t __offset, int __flags) __wur; + +# else +# ifdef __REDIRECT +extern ssize_t __REDIRECT (pwritev2, (int __fd, const struct iovec *__iovec, + int __count, __off64_t __offset, + int __flags), + pwritev64v2) __wur; +extern ssize_t __REDIRECT (preadv2, (int __fd, const struct iovec *__iovec, + int __count, __off64_t __offset, + int __flags), + preadv64v2) __wur; +# else +# define preadv2 preadv64v2 +# define pwritev2 pwritev64v2 +# endif +# endif + +# ifdef __USE_LARGEFILE64 +/* Same as preadv but with an additional flag argumenti defined at uio.h. */ +extern ssize_t preadv64v2 (int __fp, const struct iovec *__iovec, + int __count, __off64_t __offset, + int ___flags) __wur; + +/* Same as preadv but with an additional flag argument defined at uio.h. */ +extern ssize_t pwritev64v2 (int __fd, const struct iovec *__iodev, + int __count, __off64_t __offset, + int __flags) __wur; +# endif +#endif /* Use GNU. */ + +__END_DECLS + +#endif /* sys/uio.h */ |