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  • Committer: Teddy Hogeborn
  • Date: 2019-07-27 10:11:45 UTC
  • Revision ID: teddy@recompile.se-20190727101145-jnpbpf8220gldbcd
Add dracut(8) support

Add support for the dracut(8) system for generating initramfs image
files; dracut is an alternative to the "initramfs-tools" package.

* .bzrignore (dracut-module/password-agent): Ignore new binary file.
* dracut-module: New directory for the dracut module.
* INSTALL (Prerequisites/Libraries/Mandos Client): Add dracut as an
                                                   alternative to
                                                   initramfs-tools,
                                                   and also add GLib.
* Makefile (DRACUTMODULE, GLIB_CFLAGS, GLIB_LIBS): New.
  (CPROGS): Add "dracut-module/password-agent".
  (DOCS): Add "dracut-module/password-agent.8mandos".
  (dracut-module/password-agent.8mandos): New.
  (dracut-module/password-agent.8mandos.xhtml): - '' -
  (dracut-module/password-agent): - '' -
  (check): Add command to run tests of password-agent(8mandos).
  (install-client-nokey): Also install the dracut module directory,
                          its files, and the password-agent(8mandos)
                          manual page.
  (install-client): To update the initramfs image file, run
                    update-initramfs or dracut depending on what is
                    installed.
  (uninstall-client): - '' - and also uninstall the the files in the
                      dracut module directory, that directory itself,
                      and the password-agent(8mandos) manual page.
* debian/control (Build-Depends): Add "libglib2.0-dev (>=2.40)".
  (Package: mandos-client/Depends): Add "dracut (>= 044+241-3)" as an
                                    alternative dependency to
                                    initramfs-tools.
  (Package: mandos-client/Conflicts): New; set to
                                      "dracut-config-generic".
  (debian/mandos-client.README.Debian): Document alternative commands
                                        to update the initramfs image
                                        for when dracut is used.
* debian/mandos-client.postinst (update_initramfs): Use alternative
                                                    commands to update
                                                    the initramfs
                                                    image for when
                                                    dracut is used.
* debian/tests/control (password-agent, password-agent-suid): Add two
                                                              new tests.
* dracut-module/ask-password-mandos.path: New.
* dracut-module/ask-password-mandos.service: - '' -
* dracut-module/cmdline-mandos.sh: - '' -
* dracut-module/module-setup.sh: - '' -
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: - '' -
* initramfs-unpack: Use the dracut "skipcpio" command, if available.
                    Also be more flexible and try hard to detect where
                    compressed data starts.
* plugins.d/mandos-client.xml (SECURITY): Be more precise that the
                                          mandos-client binary might
                                          not always be setuid, but
                                          that the program assumes
                                          that it has been started
                                          that way.
* plugins.d/password-prompt.c: Add new "--prompt" option.
  (conflict_detection): First try to detect the new PID file of
                        plymouth.
  (main): Define and use new "prompt" variable.
* plugins.d/password-prompt.xml (SYNOPSIS): Show new --prompt option.
  (DESCRIPTION): Describe new behavior of looking for plymouth PID
                 file.
  (OPTIONS): Document new "--prompt" option.
  (ENVIRONMENT): Clarify that the CRYPTTAB_SOURCE and CRYPTTAB_NAME
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the CRYPTTAB_SOURCE and
                 CRYPTTAB_NAME comes from, since this can now be
                 either initramfs-tools or dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference, and add commas
              to separate the other references.
* plugins.d/plymouth.c: Add new "--prompt" and "--debug" options.
  (debug): New global flag.
  (fprintf_plus): New function, used for debug output.
  (exec_and_wait): Add extra "const" to "argv" argument.
  (main): Define and use new "prompt" variable.  Add debug output.
  (main/options, main/parse_opt): New; used to parse options.
* plugins.d/plymouth.xml (SYNOPSIS): Show new options.
  (OPTIONS): Document new options.
  (ENVIRONMENT): Clarify that the cryptsource and crypttarget
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the cryptsource and crypttarget
                 comes from, since this can now be either
                 initramfs-tools or dracut.
  (EXAMPLE): Add an example using an option.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/splashy.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/usplash.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.

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plugins.d/password-prompt.c
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/*
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 * Password-prompt - Read a password from the terminal and print it
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 * 
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 * Copyright © 2008-2019, 2021-2022 Teddy Hogeborn
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 * Copyright © 2008-2019, 2021-2022 Björn Påhlsson
 
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 * Copyright © 2008-2019 Teddy Hogeborn
 
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 * Copyright © 2008-2019 Björn Påhlsson
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 * 
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 * This file is part of Mandos.
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 * 
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 * Contact the authors at <mandos@recompile.se>.
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 */
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#define _GNU_SOURCE             /* vasprintf(),
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                                   program_invocation_short_name,
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                                   asprintf(), getline() */
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#include <sys/types.h>          /* sig_atomic_t, pid_t */
 
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#define _GNU_SOURCE             /* getline(), asprintf() */
 
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#include <termios.h>            /* struct termios, tcsetattr(),
 
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                                   TCSAFLUSH, tcgetattr(), ECHO */
 
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#include <unistd.h>             /* access(), struct termios,
 
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                                   tcsetattr(), STDIN_FILENO,
 
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                                   TCSAFLUSH, tcgetattr(), ECHO,
 
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                                   readlink() */
 
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#include <signal.h>             /* sig_atomic_t, raise(), struct
 
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                                   sigaction, sigemptyset(),
 
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                                   sigaction(), sigaddset(), SIGINT,
 
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                                   SIGQUIT, SIGHUP, SIGTERM,
 
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                                   raise() */
 
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#include <stddef.h>             /* NULL, size_t, ssize_t */
 
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#include <sys/types.h>          /* ssize_t, struct dirent, pid_t,
 
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                                   ssize_t, open() */
 
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#include <stdlib.h>             /* EXIT_SUCCESS, EXIT_FAILURE,
 
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                                   getenv(), free() */
 
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#include <dirent.h>             /* scandir(), alphasort() */
 
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#include <stdio.h>              /* fprintf(), stderr, getline(),
 
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                                   stdin, feof(), fputc(), vfprintf(),
 
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                                   vasprintf() */
 
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#include <errno.h>              /* errno, EBADF, ENOTTY, EINVAL,
 
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                                   EFAULT, EFBIG, EIO, ENOSPC, EINTR
 
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                                */
 
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#include <error.h>              /* error() */
 
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#include <iso646.h>             /* or, not */
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#include <stdbool.h>            /* bool, false, true */
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#include <argp.h>               /* argp_program_version,
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                                   argp_program_bug_address,
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                                   struct argp_option,
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                                   struct argp_state, argp_state_help,
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                                   ARGP_HELP_STD_HELP,
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                                   ARGP_HELP_EXIT_ERR,
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                                   ARGP_HELP_EXIT_OK, ARGP_HELP_USAGE,
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                                   argp_err_exit_status,
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                                   ARGP_ERR_UNKNOWN, argp_parse(),
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                                   ARGP_IN_ORDER, ARGP_NO_HELP */
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#include <stdarg.h>             /* va_list, va_start(), vfprintf() */
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#include <stdio.h>              /* vasprintf(), fprintf(), stderr,
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                                   vfprintf(), asprintf(), getline(),
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                                   stdin, feof(), clearerr(),
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                                   fputc() */
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#include <errno.h>              /* program_invocation_short_name,
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                                   errno, ENOENT, error_t, ENOMEM,
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                                   EINVAL, EBADF, ENOTTY, EFAULT,
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                                   EFBIG, EIO, ENOSPC, EINTR */
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#include <string.h>             /* strerror(), strrchr(), strcmp() */
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#include <error.h>              /* error() */
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#include <stdlib.h>             /* free(), realloc(), EXIT_SUCCESS,
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                                   EXIT_FAILURE, getenv() */
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#include <unistd.h>             /* access(), R_OK, ssize_t, close(),
55
 
                                   read(), STDIN_FILENO, write(),
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                                   STDOUT_FILENO */
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#include <dirent.h>             /* struct dirent, scandir(),
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                                   alphasort() */
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#include <inttypes.h>           /* uintmax_t, strtoumax() */
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#include <iso646.h>             /* or, and, not */
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#include <fcntl.h>              /* open(), O_RDONLY */
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#include <stddef.h>             /* NULL, size_t */
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#include <termios.h>            /* struct termios, tcgetattr(),
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                                   tcflag_t, ECHO, tcsetattr(),
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                                   TCSAFLUSH */
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#include <signal.h>             /* struct sigaction, sigemptyset(),
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                                   sigaddset(), SIGINT, SIGHUP,
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                                   SIGTERM, SIG_IGN, SIG_DFL,
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                                   raise() */
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#include <sysexits.h>           /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
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                                   EX_IOERR, EX_OSFILE, EX_OK */
 
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#include <inttypes.h>           /* strtoumax() */
 
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#include <sys/stat.h>           /* struct stat, lstat(), open() */
 
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#include <string.h>             /* strlen, rindex, memcmp, strerror()
 
57
                                 */
 
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#include <argp.h>               /* struct argp_option, struct
 
59
                                   argp_state, struct argp,
 
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                                   argp_parse(), error_t,
 
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                                   ARGP_KEY_ARG, ARGP_KEY_END,
 
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                                   ARGP_ERR_UNKNOWN */
 
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#include <sysexits.h>           /* EX_SOFTWARE, EX_OSERR,
 
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                                   EX_UNAVAILABLE, EX_IOERR, EX_OK */
 
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#include <fcntl.h>              /* open() */
 
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#include <stdarg.h>             /* va_list, va_start(), ... */
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volatile sig_atomic_t quit_now = 0;
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int signal_received;