83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __INCLUDE_FS_FDTABLE_H
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#define __INCLUDE_FS_FDTABLE_H
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#include <limits.h>
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#include <sys/select.h>
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#include <semaphore.h>
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#include "linux/spinlock.h"
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/* open file table for process fd */
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struct file_table_s {
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intptr_t sysFd; /* system fd associate with the tg_filelist index */
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};
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struct fd_table_s {
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unsigned int max_fds;
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struct file_table_s *ft_fds; /* process fd array associate with system fd */
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fd_set *proc_fds;
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sem_t ft_sem; /* manage access to the file table */
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};
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struct files_struct {
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int count;
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struct fd_table_s *fdt;
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unsigned int file_lock;
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unsigned int next_fd;
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#ifdef VFS_USING_WORKDIR
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spinlock_t workdir_lock;
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char workdir[PATH_MAX];
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#endif
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};
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typedef struct ProcessCB LosProcessCB;
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void files_refer(int fd);
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int files_close_internal(int fd, LosProcessCB *processCB);
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struct files_struct *dup_fd(struct files_struct *oldf);
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struct files_struct *alloc_files(void);
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void delete_files(LosProcessCB *processCB, struct files_struct *files);
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struct files_struct *create_files_snapshot(const struct files_struct *oldf);
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void delete_files_snapshot(struct files_struct *files);
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int alloc_fd(int minfd);
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void alloc_std_fd(struct fd_table_s *fdt);
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#endif
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