mirror of
https://github.com/rwinkhart/cachyos-postinstall-helper.git
synced 2026-08-27 20:36:32 -04:00
109 lines
3.1 KiB
Go
109 lines
3.1 KiB
Go
package main
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import (
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"bufio"
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"os"
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"strings"
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"github.com/rwinkhart/go-boilerplate/front"
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"github.com/rwinkhart/go-boilerplate/other"
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)
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func system() {
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for {
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var choice int
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if performAllTweaks {
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choice = 2
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} else {
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choice = front.InputMenuGen("Tweak:", []string{"BACK", "ALL", "replace sudo with doas", "enable ipv6 privacy extensions", "enable SysRq reboots", "disable kernel security mitigations", "unlock amdgpu tuning", "enable amd_pstate in passive mode (recommended for zenver2)"})
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}
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var doAll bool
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switch choice {
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case 1:
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return
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case 2:
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doAll = true
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fallthrough
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case 3:
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writeFile(mountPoint+"/etc/doas.conf", "permit persist keepenv :wheel as root\n", "root", 0644)
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managePackages("-S", []string{"opendoas"})
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managePackages("-S", []string{"--asexplicit", "--dbonly", "archlinux-keyring", "autoconf", "automake", "binutils", "bison", "debugedit", "fakeroot", "file", "findutils", "flex", "gawk", "gcc", "gettext", "grep", "groff", "gzip", "libtool", "m4", "make", "pacman", "patch", "pkgconf", "sed", "texinfo", "which"})
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managePackages("-R", []string{"base-devel", "sudo"})
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mkdir(mountPoint + "/home/" + getUsername() + "/.config/yay")
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writeFile(mountPoint+"/home/"+getUsername()+"/.config/yay/config.json", yay, getUsername(), 0644)
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if !doAll {
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break
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}
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fallthrough
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case 4:
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nics, err := os.ReadDir("/sys/class/net")
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if err != nil {
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other.PrintError("Failed to retrieve NICs", 1)
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}
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var sysctlConf strings.Builder
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sysctlConf.WriteString("net.ipv6.conf.all.use_tempaddr = 2\nnet.ipv6.conf.default.use_tempaddr = 2")
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for _, nic := range nics {
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sysctlConf.WriteString("\nnet.ipv6.conf." + nic.Name() + ".use_tempaddr = 2")
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}
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writeFile(mountPoint+"/etc/sysctl.d/40-ipv6-priv-ext.conf", sysctlConf.String()+"\n", "root", 0644)
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if !doAll {
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break
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}
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fallthrough
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case 5:
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writeFile(mountPoint+"/etc/sysctl.d/35-sysrq.conf", "kernel.sysrq = 244\n", "root", 0644)
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if !doAll {
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break
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}
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fallthrough
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case 6:
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addKernelParams([]string{"mitigations=off"})
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if !doAll {
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break
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}
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fallthrough
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case 7:
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addKernelParams([]string{"amdgpu.ppfeaturemask=0xffffffff"})
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if !doAll {
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break
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}
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fallthrough
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case 8:
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addKernelParams([]string{"amd_pstate=passive"})
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}
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if performAllTweaks {
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break
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}
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}
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}
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func addKernelParams(newParameters []string) {
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f, err := os.Open(mountPoint + "/boot/loader/entries/linux-cachyos.conf")
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if err != nil {
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other.PrintError("Failed to open systemd-boot entry", 1)
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}
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fScanner := bufio.NewScanner(f)
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fScanner.Split(bufio.ScanLines)
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var parameters []string
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for i := 0; fScanner.Scan(); i++ {
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if i == 1 {
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parameters = strings.Split(fScanner.Text(), " ")[1:]
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break
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}
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}
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parameters = append(parameters, newParameters...)
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writeFile(mountPoint+"/boot/loader/entries/linux-cachyos.conf", "title Linux Cachyos\noptions "+strings.Join(parameters, " ")+"\nlinux /vmlinuz-linux-cachyos\ninitrd /initramfs-linux-cachyos.img\n", "root", 0700)
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}
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const yay = `{
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"sudobin": "doas",
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"sudoflags": "",
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"bottomup": true,
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"sudoloop": false
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}`
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