From 7a9219c17a6a15bfa96a87b352837be71b6738f6 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 3 Oct 2011 19:26:44 +0000 Subject: sandbox: Add OS dependent layer We want to keep all OS-dependent code in once place, with a simple interface to U-Boot. For now, this is that place. Signed-off-by: Simon Glass --- include/os.h | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 include/os.h (limited to 'include/os.h') diff --git a/include/os.h b/include/os.h new file mode 100644 index 0000000..3ea6d2d --- /dev/null +++ b/include/os.h @@ -0,0 +1,73 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * Operating System Interface + * + * This provides access to useful OS routines from the sandbox architecture + */ + +/** + * Access to the OS read() system call + * + * \param fd File descriptor as returned by os_open() + * \param buf Buffer to place data + * \param count Number of bytes to read + * \return number of bytes read, or -1 on error + */ +ssize_t os_read(int fd, void *buf, size_t count); + +/** + * Access to the OS write() system call + * + * \param fd File descriptor as returned by os_open() + * \param buf Buffer containing data to write + * \param count Number of bytes to write + * \return number of bytes written, or -1 on error + */ +ssize_t os_write(int fd, const void *buf, size_t count); + +/** + * Access to the OS open() system call + * + * \param pathname Pathname of file to open + * \param flags Flags, like O_RDONLY, O_RDWR + * \return file descriptor, or -1 on error + */ +int os_open(const char *pathname, int flags); + +/** + * Access to the OS close() system call + * + * \param fd File descriptor to close + * \return 0 on success, -1 on error + */ +int os_close(int fd); + +/** + * Access to the OS exit() system call + * + * This exits with the supplied return code, which should be 0 to indicate + * success. + * + * @param exit_code exit code for U-Boot + */ +void os_exit(int exit_code); -- cgit v1.1