lib/util/sys_rw.h

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  * Samba system utilities
   4  * Copyright (C) Andrew Tridgell 1992-1998
   5  * Copyright (C) Jeremy Allison  1998-2005
   6  * Copyright (C) Timur Bakeyev        2005
   7  * Copyright (C) Bjoern Jacke    2006-2007
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #ifndef __LIB_SYS_RW_H__
  24 #define __LIB_SYS_RW_H__
  25
  26 #include <unistd.h>
  27
  28 struct iovec;
  29
  30 off_t sys_block_align_truncate(off_t len, off_t align);
  31 off_t sys_block_align(off_t len, off_t align);
  32 bool sys_valid_io_range(off_t offset, size_t length);
  33 bool sys_io_ranges_overlap(size_t c1, off_t o1,
  34                            size_t c2, off_t o2);
  35 ssize_t sys_read(int fd, void *buf, size_t count);
  36 void sys_read_v(int fd, void *buf, size_t count);
  37 ssize_t sys_write(int fd, const void *buf, size_t count);
  38 void sys_write_v(int fd, const void *buf, size_t count);
  39 ssize_t sys_writev(int fd, const struct iovec *iov, int iovcnt);
  40 ssize_t sys_pread(int fd, void *buf, size_t count, off_t off);
  41 ssize_t sys_pread_full(int fd, void *buf, size_t count, off_t off);
  42 ssize_t sys_pwrite(int fd, const void *buf, size_t count, off_t off);
  43 ssize_t sys_pwrite_full(int fd, const void *buf, size_t count, off_t off);
  44
  45 #endif