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libc和根文件系统包含指南

最新推荐文章于 2024-08-27 14:40:47 发布

原创最新推荐文章于 2024-08-27 14:40:47 发布 · 983 阅读

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CC 4.0 BY-SA版权

文章标签：

#linux #library #debugging #application #profiling #components

本文详细介绍了在操作系统中包含libc和根文件系统组件的指导原则，包括动态链接器、本地修复、段错误处理等关键库组件的作用及使用场景。

Library components in glibc and root filesystem inclusion guidelines
Library component	Content	Inclusion guidelines
ld	Dynamic linker.^[2]	Compulsory.
libBrokenLocale	Fixup routines to get applications with broken locale features to run. Overrides application defaults through preloading. (Need to use `LD_PRELOAD`).	Rarely used.
libSegFault	Routines for catching segmentation faults and doing backtraces.	Rarely used.
libanl	Asynchronous name lookup routines.	Rarely used.
libc	Main C library routines.	Compulsory.
libcrypt	Cryptography routines.	Required for most applications involved in authentication.
libdl	Routines for loading shared objects dynamically.	Required for applications that use functions such as dlopen( ).
libm	Math routines.	Required for math functions.
libmemusage	Routines for heap and stack memory profiling.	Rarely used.
libnsl	NIS network services library routines.	Rarely used.
libnss_compat	Name Switch Service (NSS) compatibility routines for NIS.	Loaded automatically by the glibc NSS.^[3]
libnss_dns	NSS routines for DNS.	Loaded automatically by the glibc NSS.
libnss_files	NSS routines for file lookups.	Loaded automatically by the glibc NSS.
libnss_hesiod	NSS routines for Hesiod name service.	Loaded automatically by the glibc NSS.
libnss_nis	NSS routines for NIS.	Loaded automatically by the glibc NSS.
libnss_nisplus	NSS routines for NIS plus.	Loaded automatically by the glibc NSS.
libpcprofile	Program counter profiling routines.	Rarely used.
libpthread	Posix 1003.1c threads routines for Linux.	Required for threads programming.
libresolv	Name resolver routines.	Required for name resolution.
librt	Asynchronous I/O routines.	Rarely used.
libthread_db	Thread debugging routines.	Loaded automatically by gdb when debugging threaded applications. Never actually linked to by any application.
libutil	Login routines, part of user accounting database.	Required for terminal connection management.

^[2] This library component is actually not a library itself. Instead, ld.so is an executable invoked by the ELF binary format loader to load the dynamically linked libraries into an application's memory space