198 lines
8.7 KiB
Markdown
198 lines
8.7 KiB
Markdown
# StudyingUnixInterface
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对Linux/UNIX环境下的系统调用与公共函数库的学习实践代码
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## 简介
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本仓库中包含有本人在Linux/UNIX环境相关的笔记与代码，使用C语言并使用VIM编辑器进行编写。
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## 运行环境
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本仓库的代码均在本人的开发服务器上运行与调试
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### 开发服务器环境
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主要列出开发服务器的基本信息和软硬件环境
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#### 系统基本信息
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1. Linux Saturneric-Dev 4.19.0-12-amd64 #1 SMP Debian 4.19.152-1 (2020-10-18) x86_64 GNU/Linux
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2. Debian GNU/Linux 10 \n \l
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### 软件环境
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1. 编译环境GCC
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```
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Using built-in specs.
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COLLECT_GCC=gcc
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COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
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OFFLOAD_TARGET_NAMES=nvptx-none
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OFFLOAD_TARGET_DEFAULT=1
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Target: x86_64-linux-gnu
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Configured with: ../src/configure -v --with-pkgversion='Debian 8.3.0-6' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
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Thread model: posix
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gcc version 8.3.0 (Debian 8.3.0-6)
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```
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2. 已加载的内核模块
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```
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Module Size Used by
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ipt_MASQUERADE 16384 1
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nf_conntrack_netlink 49152 0
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xfrm_user 40960 1
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xfrm_algo 16384 1 xfrm_user
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nft_chain_nat_ipv4 16384 4
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nf_nat_ipv4 16384 2 ipt_MASQUERADE,nft_chain_nat_ipv4
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br_netfilter 24576 0
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bridge 188416 1 br_netfilter
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stp 16384 1 bridge
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llc 16384 2 bridge,stp
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aufs 274432 0
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rfkill 28672 1
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overlay 131072 0
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binfmt_misc 20480 1
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snd_hda_codec_analog 20480 1
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snd_hda_codec_generic 86016 1 snd_hda_codec_analog
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snd_hda_intel 49152 1
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snd_hda_codec 151552 3 snd_hda_codec_generic,snd_hda_intel,snd_hda_codec_analog
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coretemp 16384 0
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snd_hda_core 94208 4 snd_hda_codec_generic,snd_hda_intel,snd_hda_codec_analog,snd_hda_codec
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snd_hwdep 16384 1 snd_hda_codec
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snd_pcm 114688 3 snd_hda_intel,snd_hda_codec,snd_hda_core
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snd_timer 36864 1 snd_pcm
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snd 94208 9 snd_hda_codec_generic,snd_hwdep,snd_hda_intel,snd_hda_codec_analog,snd_hda_codec,snd_timer,snd_pcm
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kvm 757760 0
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iTCO_wdt 16384 0
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iTCO_vendor_support 16384 1 iTCO_wdt
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soundcore 16384 1 snd
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irqbypass 16384 1 kvm
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dcdbas 16384 0
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sg 36864 0
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serio_raw 16384 0
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rng_core 16384 0
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evdev 28672 2
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pcspkr 16384 0
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nf_log_ipv6 16384 5
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ip6t_REJECT 16384 1
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nf_reject_ipv6 16384 1 ip6t_REJECT
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xt_hl 16384 22
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ip6_tables 32768 52
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ip6t_rt 16384 3
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nf_log_ipv4 16384 5
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nf_log_common 16384 2 nf_log_ipv4,nf_log_ipv6
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ipt_REJECT 16384 1
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nf_reject_ipv4 16384 1 ipt_REJECT
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xt_LOG 16384 10
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nft_limit 16384 13
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xt_limit 16384 0
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xt_addrtype 16384 6
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xt_tcpudp 16384 30
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xt_conntrack 16384 17
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nft_compat 20480 151
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nft_counter 16384 197
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nf_conntrack_netbios_ns 16384 0
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nf_conntrack_broadcast 16384 1 nf_conntrack_netbios_ns
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nf_nat_ftp 16384 0
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nf_nat 36864 2 nf_nat_ftp,nf_nat_ipv4
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nf_conntrack_ftp 20480 1 nf_nat_ftp
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nf_conntrack 172032 9 xt_conntrack,nf_nat,nf_nat_ftp,ipt_MASQUERADE,nf_conntrack_netbios_ns,nf_nat_ipv4,nf_conntrack_broadcast,nf_conntrack_netlink,nf_conntrack_ftp
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nf_defrag_ipv6 20480 1 nf_conntrack
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nf_defrag_ipv4 16384 1 nf_conntrack
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libcrc32c 16384 2 nf_conntrack,nf_nat
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nf_tables 143360 472 nft_compat,nft_chain_nat_ipv4,nft_counter,nft_limit
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nfnetlink 16384 4 nft_compat,nf_conntrack_netlink,nf_tables
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parport_pc 32768 1
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ppdev 20480 0
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lp 20480 0
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parport 57344 3 parport_pc,lp,ppdev
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ip_tables 28672 8
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x_tables 45056 13 xt_conntrack,nft_compat,xt_LOG,xt_tcpudp,ipt_MASQUERADE,xt_addrtype,ip6t_rt,ip6_tables,ipt_REJECT,ip_tables,xt_limit,xt_hl,ip6t_REJECT
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autofs4 49152 2
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ext4 745472 3
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crc16 16384 1 ext4
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mbcache 16384 1 ext4
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jbd2 122880 1 ext4
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crc32c_generic 16384 7
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fscrypto 32768 1 ext4
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ecb 16384 0
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crypto_simd 16384 0
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cryptd 28672 1 crypto_simd
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glue_helper 16384 0
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aes_x86_64 20480 0
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sd_mod 61440 5
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ata_generic 16384 0
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ahci 40960 4
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libahci 40960 1 ahci
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ata_piix 36864 0
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libata 270336 4 ata_piix,libahci,ahci,ata_generic
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i915 1736704 1
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uhci_hcd 49152 0
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ehci_pci 16384 0
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ehci_hcd 94208 1 ehci_pci
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tg3 188416 0
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psmouse 172032 0
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i2c_i801 28672 0
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video 49152 1 i915
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scsi_mod 249856 3 sd_mod,libata,sg
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i2c_algo_bit 16384 1 i915
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drm_kms_helper 208896 1 i915
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lpc_ich 28672 0
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mfd_core 16384 1 lpc_ich
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usbcore 294912 3 ehci_pci,ehci_hcd,uhci_hcd
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drm 495616 3 drm_kms_helper,i915
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usb_common 16384 1 usbcore
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libphy 77824 1 tg3
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button 16384 0
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```
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### 硬件环境
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1. CPU
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```
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processor : 0
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vendor_id : GenuineIntel
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cpu family : 6
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model : 23
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model name : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
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stepping : 6
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microcode : 0x60f
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cpu MHz : 2014.515
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cache size : 6144 KB
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physical id : 0
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siblings : 2
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core id : 0
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cpu cores : 2
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apicid : 0
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initial apicid : 0
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fpu : yes
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fpu_exception : yes
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cpuid level : 10
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wp : yes
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flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm pti tpr_shadow vnmi flexpriority dtherm
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bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit
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bogomips : 5984.92
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clflush size : 64
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cache_alignment : 64
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address sizes : 36 bits physical, 48 bits virtual
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power management:
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processor : 1
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vendor_id : GenuineIntel
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cpu family : 6
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model : 23
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model name : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
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stepping : 6
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microcode : 0x60f
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cpu MHz : 2031.014
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cache size : 6144 KB
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physical id : 0
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siblings : 2
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core id : 1
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cpu cores : 2
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apicid : 1
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initial apicid : 1
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fpu : yes
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fpu_exception : yes
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cpuid level : 10
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wp : yes
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flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm pti tpr_shadow vnmi flexpriority dtherm
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bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit
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bogomips : 5984.92
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clflush size : 64
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cache_alignment : 64
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address sizes : 36 bits physical, 48 bits virtual
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power management:
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```
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2. 内存信息
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```
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total used free shared buff/cache available
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Mem: 3871 1230 1782 33 858 2378
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Swap: 4004 0 4004
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```
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