1*7a9219c1SSimon Glass /* 2*7a9219c1SSimon Glass * Copyright (c) 2011 The Chromium OS Authors. 3*7a9219c1SSimon Glass * See file CREDITS for list of people who contributed to this 4*7a9219c1SSimon Glass * project. 5*7a9219c1SSimon Glass * 6*7a9219c1SSimon Glass * This program is free software; you can redistribute it and/or 7*7a9219c1SSimon Glass * modify it under the terms of the GNU General Public License as 8*7a9219c1SSimon Glass * published by the Free Software Foundation; either version 2 of 9*7a9219c1SSimon Glass * the License, or (at your option) any later version. 10*7a9219c1SSimon Glass * 11*7a9219c1SSimon Glass * This program is distributed in the hope that it will be useful, 12*7a9219c1SSimon Glass * but WITHOUT ANY WARRANTY; without even the implied warranty of 13*7a9219c1SSimon Glass * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*7a9219c1SSimon Glass * GNU General Public License for more details. 15*7a9219c1SSimon Glass * 16*7a9219c1SSimon Glass * You should have received a copy of the GNU General Public License 17*7a9219c1SSimon Glass * along with this program; if not, write to the Free Software 18*7a9219c1SSimon Glass * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 19*7a9219c1SSimon Glass * MA 02111-1307 USA 20*7a9219c1SSimon Glass */ 21*7a9219c1SSimon Glass 22*7a9219c1SSimon Glass /* 23*7a9219c1SSimon Glass * Operating System Interface 24*7a9219c1SSimon Glass * 25*7a9219c1SSimon Glass * This provides access to useful OS routines from the sandbox architecture 26*7a9219c1SSimon Glass */ 27*7a9219c1SSimon Glass 28*7a9219c1SSimon Glass /** 29*7a9219c1SSimon Glass * Access to the OS read() system call 30*7a9219c1SSimon Glass * 31*7a9219c1SSimon Glass * \param fd File descriptor as returned by os_open() 32*7a9219c1SSimon Glass * \param buf Buffer to place data 33*7a9219c1SSimon Glass * \param count Number of bytes to read 34*7a9219c1SSimon Glass * \return number of bytes read, or -1 on error 35*7a9219c1SSimon Glass */ 36*7a9219c1SSimon Glass ssize_t os_read(int fd, void *buf, size_t count); 37*7a9219c1SSimon Glass 38*7a9219c1SSimon Glass /** 39*7a9219c1SSimon Glass * Access to the OS write() system call 40*7a9219c1SSimon Glass * 41*7a9219c1SSimon Glass * \param fd File descriptor as returned by os_open() 42*7a9219c1SSimon Glass * \param buf Buffer containing data to write 43*7a9219c1SSimon Glass * \param count Number of bytes to write 44*7a9219c1SSimon Glass * \return number of bytes written, or -1 on error 45*7a9219c1SSimon Glass */ 46*7a9219c1SSimon Glass ssize_t os_write(int fd, const void *buf, size_t count); 47*7a9219c1SSimon Glass 48*7a9219c1SSimon Glass /** 49*7a9219c1SSimon Glass * Access to the OS open() system call 50*7a9219c1SSimon Glass * 51*7a9219c1SSimon Glass * \param pathname Pathname of file to open 52*7a9219c1SSimon Glass * \param flags Flags, like O_RDONLY, O_RDWR 53*7a9219c1SSimon Glass * \return file descriptor, or -1 on error 54*7a9219c1SSimon Glass */ 55*7a9219c1SSimon Glass int os_open(const char *pathname, int flags); 56*7a9219c1SSimon Glass 57*7a9219c1SSimon Glass /** 58*7a9219c1SSimon Glass * Access to the OS close() system call 59*7a9219c1SSimon Glass * 60*7a9219c1SSimon Glass * \param fd File descriptor to close 61*7a9219c1SSimon Glass * \return 0 on success, -1 on error 62*7a9219c1SSimon Glass */ 63*7a9219c1SSimon Glass int os_close(int fd); 64*7a9219c1SSimon Glass 65*7a9219c1SSimon Glass /** 66*7a9219c1SSimon Glass * Access to the OS exit() system call 67*7a9219c1SSimon Glass * 68*7a9219c1SSimon Glass * This exits with the supplied return code, which should be 0 to indicate 69*7a9219c1SSimon Glass * success. 70*7a9219c1SSimon Glass * 71*7a9219c1SSimon Glass * @param exit_code exit code for U-Boot 72*7a9219c1SSimon Glass */ 73*7a9219c1SSimon Glass void os_exit(int exit_code); 74