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001 /* Copyright (C) 2005 David Decotigny 002 003 This program is free software; you can redistribute it and/or 004 modify it under the terms of the GNU General Public License 005 as published by the Free Software Foundation; either version 2 006 of the License, or (at your option) any later version. 007 008 This program is distributed in the hope that it will be useful, 009 but WITHOUT ANY WARRANTY; without even the implied warranty of 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 011 GNU General Public License for more details. 012 013 You should have received a copy of the GNU General Public License 014 along with this program; if not, write to the Free Software 015 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 016 USA. 017 */ 018 #ifndef _SOS_DEV_ZERO_H_ 019 #define _SOS_DEV_ZERO_H_ 020 021 /** 022 * "Driver" to map /dev/zero in user space 023 */ 024 025 026 #include <sos/umem_vmm.h> 027 028 029 /** 030 * Register the /dev/zero and /dev/null devices 031 */ 032 sos_ret_t sos_dev_zero_subsystem_setup(void); 033 034 035 /** 036 * Map /dev/zero into user space 037 * @note usage RESTRICTED to the kernel for start_init and the exec 038 * syscall 039 */ 040 sos_ret_t sos_dev_zero_map(struct sos_umem_vmm_as * dest_as, 041 sos_uaddr_t *uaddr, 042 sos_size_t size, 043 sos_ui32_t access_rights, 044 sos_ui32_t flags); 045 046 #endif /* _SOS_EXEC_ELF32_H_ */
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