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0d35e2e0bb
Add dpopen()/dpclose() as the descriptor-based counterpart of popen()/pclose(), analogous to how dprintf() relates to fprintf(). dpopen() returns a raw file descriptor instead of a FILE stream, avoiding the stdio.h dependency for callers that only need an fd. Refactor popen() as a thin wrapper: dpopen() + fdopen() + FILE container. All pipe creation and process spawning logic now lives in dpopen.c. Also remove the hard dependency on NSH_LIBRARY from SYSTEM_POPEN. When NSH is available, commands are executed through sh -c with full shell syntax support. When NSH is not available, commands are split by whitespace and executed directly via posix_spawnp(). Add CONFIG_SYSTEM_POPEN_MAXARGUMENTS (default 7) to control the argv array size for the no-shell path. Signed-off-by: cuiziwei <cuiziwei@xiaomi.com>
29 lines
1.1 KiB
Makefile
29 lines
1.1 KiB
Makefile
############################################################################
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# apps/system/popen/Makefile
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#
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# SPDX-License-Identifier: Apache-2.0
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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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include $(APPDIR)/Make.defs
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# dpopen()/dpclose() core and popen()/pclose() FILE wrappers
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CSRCS = dpopen.c popen.c
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include $(APPDIR)/Application.mk
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