DMESG Analyzer Implement a system log analyzer and classifier for GNU/Linux. In this particular case, a sample log output file is provided. It's highly recommended to implement in a Linux-based operating system. This challenge involves a proper struct design choice for the logs classification and storing. Requirements The program must be implemented in the C programming language. You program will classify log entries by the : prefix Those log entries that don't follow the : convention will go to the General classification. Repeated log classes are not allowed. Use the dmesg-analyzer.c template The solution must use at least 3 of the following system calls: open() read() write() lseek() close() Don't forget to handle errors properly Sample Execution ./dmesg-analizer -input dmesg.txt -output dmesg_report.txt Sample Expected output file dmesg_report.txt General: [ 0.000000] Linux version 4.15.0-45-generic (buildd@lgw01-amd64-031) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2$ Command line: [ 0.000000] BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic root=UUID=d67ab183-f0e2-4bb6-8270-ad35088cef7a ro splash quiet KERNEL supported cpus: [ 0.000000] Intel GenuineIntel [ 0.000000] AMD AuthenticAMD [ 0.000000] Centaur CentaurHauls x86/fpu: [ 0.000000] Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 0.000000] Supporting XSAVE feature 0x002: 'SSE registers' [ 0.000000] Supporting XSAVE feature 0x004: 'AVX registers' [ 0.000000] xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000] Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. pci_bus 0000:00: [ 0.032806] root bus resource [io 0x0000-0x0cf7 window] [ 0.032808] root bus resource [io 0x0d00-0xffff window] [ 0.032809] root bus resource [mem 0x000a0000-0x000bffff window] [ 0.032810] root bus resource [mem 0x80000000-0xfdffffff window] [ 0.032812] root bus resource [bus 00-ff] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] DMA32 [mem 0x0000000001000000-0x000000007ffeffff] [ 0.000000] Normal empty [ 0.000000] Device empty.

DMESG Analyzer Implement a system log analyzer and classifier for GNU/Linux. In this particular case, a sample log output file is provided. It's highly recommended to implement in a Linux-based operating system. This challenge involves a proper struct design choice for the logs classification and storing. Requirements The program must be implemented in the C programming language. You program will classify log entries by the : prefix Those log entries that don't follow the : convention will go to the General classification. Repeated log classes are not allowed. Use the dmesg-analyzer.c template The solution must use at least 3 of the following system calls: open() read() write() lseek() close() Don't forget to handle errors properly Sample Execution ./dmesg-analizer -input dmesg.txt -output dmesg_report.txt Sample Expected output file dmesg_report.txt General: [ 0.000000] Linux version 4.15.0-45-generic (buildd@lgw01-amd64-031) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2$ Command line: [ 0.000000] BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic root=UUID=d67ab183-f0e2-4bb6-8270-ad35088cef7a ro splash quiet KERNEL supported cpus: [ 0.000000] Intel GenuineIntel [ 0.000000] AMD AuthenticAMD [ 0.000000] Centaur CentaurHauls x86/fpu: [ 0.000000] Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 0.000000] Supporting XSAVE feature 0x002: 'SSE registers' [ 0.000000] Supporting XSAVE feature 0x004: 'AVX registers' [ 0.000000] xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000] Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. pci_bus 0000:00: [ 0.032806] root bus resource [io 0x0000-0x0cf7 window] [ 0.032808] root bus resource [io 0x0d00-0xffff window] [ 0.032809] root bus resource [mem 0x000a0000-0x000bffff window] [ 0.032810] root bus resource [mem 0x80000000-0xfdffffff window] [ 0.032812] root bus resource [bus 00-ff] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] DMA32 [mem 0x0000000001000000-0x000000007ffeffff] [ 0.000000] Normal empty [ 0.000000] Device empty.

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter10: Pointers

Section10.1: Addresses And Pointers

Problem 7E

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DMESG Analyzer

Implement a system log analyzer and classifier for GNU/Linux. In this particular case, a sample log output file is provided. It's highly recommended to implement in a Linux-based operating system. This challenge involves a proper struct design choice for the logs classification and storing.

Requirements

The program must be implemented in the C programming language.

You program will classify log entries by the <log_type>: prefix

Those log entries that don't follow the <log_type>: convention will go to the General classification.

Repeated log classes are not allowed.

Use the dmesg-analyzer.c template

The solution must use at least 3 of the following system calls:

open()

read()

write()

lseek()

close()

Don't forget to handle errors properly

Sample Execution

./dmesg-analizer -input dmesg.txt -output dmesg_report.txt

Sample Expected output file dmesg_report.txt

General: [ 0.000000] Linux version 4.15.0-45-generic (buildd@lgw01-amd64-031) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2$ Command line: [ 0.000000] BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic root=UUID=d67ab183-f0e2-4bb6-8270-ad35088cef7a ro splash quiet KERNEL supported cpus: [ 0.000000] Intel GenuineIntel [ 0.000000] AMD AuthenticAMD [ 0.000000] Centaur CentaurHauls x86/fpu: [ 0.000000] Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 0.000000] Supporting XSAVE feature 0x002: 'SSE registers' [ 0.000000] Supporting XSAVE feature 0x004: 'AVX registers' [ 0.000000] xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000] Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. pci_bus 0000:00: [ 0.032806] root bus resource [io 0x0000-0x0cf7 window] [ 0.032808] root bus resource [io 0x0d00-0xffff window] [ 0.032809] root bus resource [mem 0x000a0000-0x000bffff window] [ 0.032810] root bus resource [mem 0x80000000-0xfdffffff window] [ 0.032812] root bus resource [bus 00-ff] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] DMA32 [mem 0x0000000001000000-0x000000007ffeffff] [ 0.000000] Normal empty [ 0.000000] Device empty.

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