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jokoyoporo's questions

Martin Hope
round-down
Asked: 2022-11-17 15:38:55 +0800 CST
  • 5

我试图通过以下指南在启动时将 /dev/nvmeX 别名为/dev/nvdX：https://www.freebsd.org/cgi/man.cgi?query=nvd

我想知道具有以下内容的 loader.conf 文件应该在启动时放置到别名 /dev/nvme0 作为 /dev/nvd0 的位置：

nvme_load="YES"
nvd_load="YES"

loader.conf 联机帮助页：https ://man.archlinux.org/man/loader.conf.5

loader.conf 联机帮助页提到，

systemd-boot(7) 将读取 ESP/loader/loader.conf...

我知道“ESP”是指 EFI 系统分区。因此，在带有 GRUB 引导加载程序的 EFI 系统分区上，正确的 loader.conf 放置是否类似于 /boot/loader/loader.conf、/boot/efi/loader/loader.conf 或 /loader/loader.conf？

附加问题：loader.conf 是否特定于 ESP 系统分区并且不能通过 BIOS/MBR 系统分区工作？

我已经尝试使用上面建议的位置在 BIOS/MBR 系统分区上进行此操作，但没有成功。

freebsd
Martin Hope
jokoyoporo
Asked: 2022-10-05 05:31:04 +0800 CST
  • 0

我很好奇为什么需要这个特殊的设备来分叉命令并在最小的 Busybox shell 中异步运行它。

BusyBox v1.30.1 (Debian 1:1.30.1-4) built-in shell (ash)
Enter 'help' for a list of built-in commands.

/bin/sh: can't access tty; job control turned off
/ #
/ # echo Hello && sleep 2s && echo World &
/bin/sh: / # can't open '/dev/null': No such file or directory

/ #
/ # mknod /dev/null c 1 3 && chmod 666 /dev/null
/ # echo Hello && sleep 2s && echo World &
/ # Hello
World

/ #
busybox subshell
Martin Hope
jokoyoporo
Asked: 2022-09-22 11:53:36 +0800 CST
  • 1

来源：systemd-stable-251：https ://github.com/systemd/systemd-stable

wget https://github.com/systemd/systemd-stable/archive/refs/heads/v251-stable.zip
unzip v251-stable.zip 
cd systemd-stable-251-stable/

使用命令：

./configure --auto-features=disabled \
            --default-library=static \
            -D standalone-binaries=true \
            -D static-libsystemd=true \
            -D static-libudev=true \
            -D link-udev-shared=false \
            -D link-systemctl-shared=false \
            -D link-networkd-shared=false \
            -D link-timesyncd-shared=false \
            -D link-boot-shared=false && make

还尝试仅使用静态库并仅启用独立选项。

配置：

  Features
enabled  : IMA, SELinux, SMACK, blkid, gcrypt, gnutls, libidn2, openssl, p11kit, xkbcommon, xz, zlib, bzip2, backlight, binfmt, coredump, environment.d, efi, firstboot, hibernate, hostnamed, hwdb, initrd, kernel-install, localed, logind, machined, networkd, nss-myhostname, nss-mymachines, nss-resolve, nss-systemd, oomd, portabled, pstore, quotacheck, randomseed, resolve, rfkill, sysext, systemd-analyze, sysusers, timedated, timesyncd, tmpfiles, userdb, vconsole, xdg-autostart, idn, polkit, nscd, dbus, glib, tpm, SysV compat, utmp, ldconfig, adm group, wheel group, gshadow, standalone-binaries, static-libsystemd(true), static-libudev(true), cryptolib(gcrypt), DNS-over-TLS(openssl)
disabled : ACL, AUDIT, AppArmor, PAM, SECCOMP, elfutils, libbpf, libcryptsetup, libcryptsetup-plugins, libcurl, libfdisk, libfido2, libidn, libiptc, microhttpd, pcre2, pwquality, qrencode, tpm2, zstd, lz4, bpf-framework, gnu-efi, homed, importd, repart, sysupdate, legacy-pkla, kmod, man pages, html pages, man page indices, compat-mutable-uid-boundaries, debug hashmap, debug mmap cache, debug siphash, valgrind, trace logging, install tests, link-udev-shared, link-systemctl-shared, link-networkd-shared, link-timesyncd-shared, link-boot-shared, fexecve, coverage

用户定义选项 auto_features : 禁用 default_library : 静态 link-boot-shared : false link-networkd-shared : false link-systemctl-shared : false link-timesyncd-shared : false link-udev-shared : false 独立二进制文件 : true static -libsystemd：真静态libdev：真

共享对象：

# file build/udevadm
build/udevadm: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0, BuildID[sha1]=f6b7c1a3509d45ebcafda9b49f4dd2332e786738, with debug_info, not stripped

我期待看到一个 ELF 可执行文件而不是共享对象文件。

systemd