8fe8417ffb
In embedded development environments, due to the lack of address isolation between processes, fd may be passed between processes and lead to misuse, We have designed an fd cross-process automatic detection tool, fdcheck_protect returns the fd containing the pid information, indicating that the ownership of the current fd belongs to the pid and is not allowed to be used by other processes. fdcheck_restore will obtain the true fd and check if the ownership of the fd is legal For ease of understanding, let's give an example where the following information is represented in 32-bit binary format fd 00000000 00000000 00000000 10001010 pid 00000000 00000000 00000011 01010101 ret 00000000 00000011 01010101 10001010 Signed-off-by: hujun5 <hujun5@xiaomi.com>
84 lines
2.5 KiB
Plaintext
84 lines
2.5 KiB
Plaintext
############################################################################
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# libs/libc/misc/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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# Add the internal C files to the build
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CSRCS += lib_mknod.c lib_umask.c lib_utsname.c lib_getrandom.c
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CSRCS += lib_xorshift128.c lib_tea_encrypt.c lib_tea_decrypt.c
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CSRCS += lib_cxx_initialize.c lib_impure.c lib_memfd.c lib_mutex.c
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CSRCS += lib_fchmodat.c lib_fstatat.c lib_getfullpath.c lib_openat.c
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CSRCS += lib_mkdirat.c lib_utimensat.c
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# Support for platforms that do not have long long types
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CSRCS += lib_umul32.c lib_umul64.c lib_umul32x64.c
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CSRCS += lib_uadd32x64.c lib_uadd64.c lib_usub64x32.c lib_usub64.c
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ifeq ($(CONFIG_PIPES),y)
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CSRCS += lib_mkfifo.c
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endif
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# Add the miscellaneous C files to the build
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CSRCS += lib_dumpbuffer.c lib_dumpvbuffer.c lib_fnmatch.c lib_debug.c
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CSRCS += lib_crc64.c lib_crc32.c lib_crc16.c lib_crc16ccitt.c lib_crc8.c
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CSRCS += lib_crc8ccitt.c lib_crc8table.c lib_glob.c lib_execinfo.c
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CSRCS += lib_ftok.c lib_err.c
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# Keyboard driver encoder/decoder
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ifeq ($(CONFIG_LIBC_KBDCODEC),y)
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CSRCS += lib_kbdencode.c lib_kbddecode.c
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endif
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# SLCD driver encoder/decoder
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ifeq ($(CONFIG_LIBC_SLCDCODEC),y)
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CSRCS += lib_slcdencode.c lib_slcddecode.c
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endif
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# Environment search path support
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ifeq ($(CONFIG_LIBC_ENVPATH),y)
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CSRCS += lib_envpath.c
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endif
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# Fdsan support
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ifeq ($(CONFIG_FDSAN),y)
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CSRCS += lib_fdsan.c
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endif
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# Fdcheck support
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ifeq ($(CONFIG_FDCHECK),y)
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CSRCS += lib_fdcheck.c
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endif
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# To ensure uname information is newest,
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# add lib_utsname.o to phony target for force rebuild
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.PHONY: lib_utsname$(OBJEXT)
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# Add the misc directory to the build
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DEPPATH += --dep-path misc
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VPATH += :misc
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