761ee81956
currently, nuttx implements readv/writev on the top of read/write. while it might work for the simplest cases, it's broken by design. for example, it's impossible to make it work correctly for files which need to preserve data boundaries without allocating a single contiguous buffer. (udp socket, some character devices, etc) this change is a start of the migration to a better design. that is, implement read/write on the top of readv/writev. to avoid a single huge change, following things will NOT be done in this commit: * fix actual bugs caused by the original readv-based-on-read design. (cf. https://github.com/apache/nuttx/pull/12674) * adapt filesystems/drivers to actually benefit from the new interface. (except a few trivial examples) * eventually retire the old interface. * retire read/write syscalls. implement them in libc instead. * pread/pwrite/preadv/pwritev (except the introduction of struct uio, which is a preparation to back these variations with the new interface.)
67 lines
2 KiB
Text
67 lines
2 KiB
Text
############################################################################
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# fs/vfs/Make.defs
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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# Common file/socket descriptor support
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CSRCS += fs_chstat.c fs_close.c fs_dup.c fs_dup2.c fs_fcntl.c fs_epoll.c
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CSRCS += fs_fchstat.c fs_fstat.c fs_fstatfs.c fs_ioctl.c fs_lseek.c
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CSRCS += fs_mkdir.c fs_open.c fs_poll.c fs_pread.c fs_pwrite.c fs_read.c
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CSRCS += fs_rename.c fs_rmdir.c fs_select.c fs_sendfile.c fs_stat.c
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CSRCS += fs_statfs.c fs_uio.c fs_unlink.c fs_write.c fs_dir.c fs_fsync.c
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CSRCS += fs_syncfs.c fs_truncate.c
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# Certain interfaces are not available if there is no mountpoint support
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ifneq ($(CONFIG_FS_LOCK_BUCKET_SIZE),0)
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CSRCS += fs_lock.c
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endif
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ifneq ($(CONFIG_PSEUDOFS_SOFTLINKS),0)
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CSRCS += fs_link.c fs_symlink.c fs_readlink.c
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endif
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# Pseudofile support
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ifeq ($(CONFIG_PSEUDOFS_FILE),y)
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CSRCS += fs_pseudofile.c
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endif
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# Support for eventfd
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ifeq ($(CONFIG_EVENT_FD),y)
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CSRCS += fs_eventfd.c
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endif
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# Support for timerfd
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ifeq ($(CONFIG_TIMER_FD),y)
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CSRCS += fs_timerfd.c
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endif
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# Support for signalfd
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ifeq ($(CONFIG_SIGNAL_FD),y)
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CSRCS += fs_signalfd.c
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endif
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# Include vfs build support
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DEPPATH += --dep-path vfs
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VPATH += :vfs
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