27dca4d857
首先，POSIX规范规定文件描述符需要支持close-on-exec属性，修改前的vfs不支持close-on-exec，当exec系列函数执行时，进程所有的文件将会被关闭（0，1，2也重新被打开）。但是，系统有些时候是不能在exec时关闭全部文件的，例如在执行exec之前，就需要重定向进程的某些文件描述符时（使用dup2），就希望该文件不被关闭，继续保持重定向属性，shell执行进程并重定向其标准输出到文件，这是我们经常做的事情。 BREAKING CHANGE: 执行exec类函数后，进程拥有的文件描述符情况发生变化：修改前，默认关闭所有的进程文件描述符，0，1，2重新打开；修改后，除非文件描述符拥有FD_CLOEXEC标记，否则该描述符不会被关闭。 re #I3U81W Change-Id: I54e841ac88e9835ec23e97de0cbc906c4e11f5a4 Signed-off-by: Guangyao Ma <guangyao.ma@outlook.com>
119 lines
5.2 KiB
Plaintext
119 lines
5.2 KiB
Plaintext
# 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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import("//kernel/liteos_a/liteos.gni")
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module_switch = defined(LOSCFG_FS_VFS)
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module_name = get_path_info(rebase_path("."), "name")
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kernel_module(module_name) {
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sources = [
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"operation/fullpath.c",
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"operation/vfs_chattr.c",
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"operation/vfs_check.c",
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"operation/vfs_cloexec.c",
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"operation/vfs_fallocate.c",
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"operation/vfs_fallocate64.c",
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"operation/vfs_fcntl.c",
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"operation/vfs_file_mapping.c",
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"operation/vfs_init.c",
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"operation/vfs_other.c",
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"operation/vfs_preadv.c",
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"operation/vfs_procfd.c",
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"operation/vfs_pwritev.c",
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"operation/vfs_readv.c",
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"operation/vfs_utime.c",
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"operation/vfs_writev.c",
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"vfs_cmd/vfs_shellcmd.c",
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]
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sources += [
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"$LITEOSTHIRDPARTY/NuttX/fs/dirent/fs_closedir.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/dirent/fs_opendir.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/dirent/fs_readdir.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/dirent/fs_rewinddir.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/dirent/fs_seekdir.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/dirent/fs_telldir.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/driver/fs_blockproxy.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/driver/fs_closeblockdriver.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/driver/fs_findblockdriver.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/driver/fs_openblockdriver.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/driver/fs_registerblockdriver.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/driver/fs_registerdriver.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/driver/fs_unregisterblockdriver.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/driver/fs_unregisterdriver.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/inode/fs_files.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/mount/fs_foreachmountpoint.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/mount/fs_mount.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/mount/fs_umount.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_close.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_dup.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_dup2.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_dupfd.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_dupfd2.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_fcntl.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_fsync.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_getfilep.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_ioctl.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_link.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_lseek.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_lseek64.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_mkdir.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_open.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_poll.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_pread.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_pread64.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_pwrite.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_pwrite64.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_read.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_readlink.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_rename.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_rmdir.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_select.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_sendfile.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_stat.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_statfs.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_symlink.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_truncate.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_truncate64.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_unlink.c",
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"$LITEOSTHIRDPARTY/NuttX/fs/vfs/fs_write.c",
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"$LITEOSTOPDIR/fs/vfs/mount.c",
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"$LITEOSTOPDIR/fs/vfs/path_cache.c",
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"$LITEOSTOPDIR/fs/vfs/vnode.c",
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"$LITEOSTOPDIR/fs/vfs/vnode_hash.c",
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]
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include_dirs = [ "$LITEOSTOPDIR/syscall" ]
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public_configs = [ ":public" ]
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}
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config("public") {
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include_dirs = [ "include" ]
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}
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