bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering#include <string.h>

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering#include <errno.h>

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering#include <unistd.h>

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering#include "log.h"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering#include "util.h"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering#include "unit-name.h"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering#include "mkdir.h"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering#include "virt.h"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering#include "strv.h"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering#include "fileio.h"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poetteringstatic const char *arg_dest = "/tmp";

31885cd5e38ec9807a6a7ab32660cf8c2fcf48f7Zbigniew Jędrzejewski-Szmekstatic bool arg_enabled = true;

b68fa010f72599e6da5822feda5ae3a47a4e63d8Simon Peetersstatic bool arg_read_crypttab = true;

b68fa010f72599e6da5822feda5ae3a47a4e63d8Simon Peeters

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poetteringstatic bool has_option(const char *haystack, const char *needle) {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering const char *f = haystack;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering size_t l;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering assert(needle);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (!haystack)

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return false;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering l = strlen(needle);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering while ((f = strstr(f, needle))) {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (f > haystack && f[-1] != ',') {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering f++;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering continue;

5841bd803f1b651c0d70c6ae114630723a76d1daZbigniew Jędrzejewski-Szmek }

5841bd803f1b651c0d70c6ae114630723a76d1daZbigniew Jędrzejewski-Szmek

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (f[l] != 0 && f[l] != ',') {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering f++;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering continue;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering }

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return true;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering }

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return false;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering}

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poetteringstatic int create_disk(

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering const char *name,

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering const char *device,

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering const char *password,

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering const char *options) {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering _cleanup_free_ char *p = NULL, *n = NULL, *d = NULL, *u = NULL, *from = NULL, *to = NULL, *e = NULL;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering _cleanup_fclose_ FILE *f = NULL;

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering bool noauto, nofail, tmp, swap;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering assert(name);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering assert(device);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering noauto = has_option(options, "noauto");

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering nofail = has_option(options, "nofail");

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering tmp = has_option(options, "tmp");

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering swap = has_option(options, "swap");

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (tmp && swap) {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering log_error("Device '%s' cannot be both 'tmp' and 'swap'. Ignoring.", name);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return -EINVAL;

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering }

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering n = unit_name_from_path_instance("systemd-cryptsetup", name, ".service");

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering if (!n)

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering return log_oom();

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering p = strjoin(arg_dest, "/", n, NULL);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (!p)

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering return log_oom();

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering u = fstab_node_to_udev_node(device);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (!u)

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return log_oom();

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering d = unit_name_from_path(u, ".device");

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering if (!d)

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return log_oom();

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering f = fopen(p, "wxe");

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering if (!f) {

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering log_error("Failed to create unit file %s: %m", p);

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering return -errno;

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering }

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering fputs(

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "# Automatically generated by systemd-cryptsetup-generator\n\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "[Unit]\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "Description=Cryptography Setup for %I\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "Documentation=man:systemd-cryptsetup@.service(8) man:crypttab(5)\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "SourcePath=/etc/crypttab\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "Conflicts=umount.target\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "DefaultDependencies=no\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "BindsTo=dev-mapper-%i.device\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "IgnoreOnIsolate=true\n"

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "After=systemd-readahead-collect.service systemd-readahead-replay.service\n",

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering f);

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (!nofail)

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering fprintf(f,

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering "Before=cryptsetup.target\n");

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering if (password) {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (streq(password, "/dev/urandom") ||

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering streq(password, "/dev/random") ||

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering streq(password, "/dev/hw_random"))

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering fputs("After=systemd-random-seed.service\n", f);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering else if (!streq(password, "-") &&

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering !streq(password, "none"))

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering fprintf(f,

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "RequiresMountsFor=%s\n",

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering password);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering }

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (is_device_path(u))

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering fprintf(f,

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "BindsTo=%s\n"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "After=%s\n"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "Before=umount.target\n",

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering d, d);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering else

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering fprintf(f,

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering "RequiresMountsFor=%s\n",

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering u);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering fprintf(f,

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "\n[Service]\n"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "Type=oneshot\n"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "RemainAfterExit=yes\n"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "TimeoutSec=0\n" /* the binary handles timeouts anyway */

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "ExecStart=" SYSTEMD_CRYPTSETUP_PATH " attach '%s' '%s' '%s' '%s'\n"

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "ExecStop=" SYSTEMD_CRYPTSETUP_PATH " detach '%s'\n",

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering name, u, strempty(password), strempty(options),

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering name);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (tmp)

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering fprintf(f,

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "ExecStartPost=/sbin/mke2fs '/dev/mapper/%s'\n",

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering name);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (swap)

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering fprintf(f,

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering "ExecStartPost=/sbin/mkswap '/dev/mapper/%s'\n",

df758e98754016119a9c8d49213a636a80ffab22Kay Sievers name);

df758e98754016119a9c8d49213a636a80ffab22Kay Sievers

df758e98754016119a9c8d49213a636a80ffab22Kay Sievers fflush(f);

df758e98754016119a9c8d49213a636a80ffab22Kay Sievers

ccd06097c79218f7d5ea4c21721bbcbc7c467dcaZbigniew Jędrzejewski-Szmek if (ferror(f)) {

df758e98754016119a9c8d49213a636a80ffab22Kay Sievers log_error("Failed to write file %s: %m", p);

df758e98754016119a9c8d49213a636a80ffab22Kay Sievers return -errno;

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering }

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

ccd06097c79218f7d5ea4c21721bbcbc7c467dcaZbigniew Jędrzejewski-Szmek if (asprintf(&from, "../%s", n) < 0)

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering return log_oom();

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering if (!noauto) {

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering to = strjoin(arg_dest, "/", d, ".wants/", n, NULL);

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering if (!to)

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering return log_oom();

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering mkdir_parents_label(to, 0755);

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering if (symlink(from, to) < 0) {

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering log_error("Failed to create symlink %s: %m", to);

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering return -errno;

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering }

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering free(to);

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering if (!nofail)

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering to = strjoin(arg_dest, "/cryptsetup.target.requires/", n, NULL);

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering else

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering to = strjoin(arg_dest, "/cryptsetup.target.wants/", n, NULL);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (!to)

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering return log_oom();

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering mkdir_parents_label(to, 0755);

6301a98cdf26dc073f5317506c806bfa69f74cc8Lennart Poettering if (symlink(from, to) < 0) {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering log_error("Failed to create symlink %s: %m", to);

b6e8f1f03dc8b7579f8c6b00372f136d74c45232Harald Hoyer return -errno;

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering }

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering }

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering e = unit_name_escape(name);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (!e)

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return log_oom();

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering free(to);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering to = strjoin(arg_dest, "/dev-mapper-", e, ".device.requires/", n, NULL);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (!to)

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return log_oom();

0bee65f0622c4faa8ac8ae771cc0c8a936dfa284Lennart Poettering

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering mkdir_parents_label(to, 0755);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (symlink(from, to) < 0) {

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering log_error("Failed to create symlink %s: %m", to);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering return -errno;

3d141780b8d509e4a6c3083de207cd84cbce187bLennart Poettering }

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering if (!noauto && !nofail) {

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering int r;

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering free(p);

aaf7eb81be912e7bed939f31e3bc4c631b2552b3Lennart Poettering p = strjoin(arg_dest, "/dev-mapper-", e, ".device.d/50-job-timeout-sec-0.conf", NULL);

bd3fa1d2434aa28564251ac4da34d01537de8c4bLennart Poettering if (!p)

return log_oom();

mkdir_parents_label(p, 0755);

r = write_string_file(p,

"# Automatically generated by systemd-cryptsetup-generator\n\n"

"[Unit]\n"

"JobTimeoutSec=0\n"); /* the binary handles timeouts anyway */

if (r)

return r;

}

return 0;

}

static int parse_proc_cmdline(char ***arg_proc_cmdline_disks, char ***arg_proc_cmdline_options, char **arg_proc_cmdline_keyfile) {

_cleanup_free_ char *line = NULL;

char *w = NULL, *state = NULL;

int r;

size_t l;

if (detect_container(NULL) > 0)

return 0;

r = read_one_line_file("/proc/cmdline", &line);

if (r < 0) {

log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));

return 0;

}

FOREACH_WORD_QUOTED(w, l, line, state) {

_cleanup_free_ char *word = NULL;

word = strndup(w, l);

if (!word)

return log_oom();

if (startswith(word, "luks=")) {

r = parse_boolean(word + 5);

if (r < 0)

log_warning("Failed to parse luks switch %s. Ignoring.", word + 5);

else

arg_enabled = r;

} else if (startswith(word, "rd.luks=")) {

if (in_initrd()) {

r = parse_boolean(word + 8);

if (r < 0)

log_warning("Failed to parse luks switch %s. Ignoring.", word + 8);

else

arg_enabled = r;

}

} else if (startswith(word, "luks.crypttab=")) {

r = parse_boolean(word + 14);

if (r < 0)

log_warning("Failed to parse luks crypttab switch %s. Ignoring.", word + 14);

else

arg_read_crypttab = r;

} else if (startswith(word, "rd.luks.crypttab=")) {

if (in_initrd()) {

r = parse_boolean(word + 17);

if (r < 0)

log_warning("Failed to parse luks crypttab switch %s. Ignoring.", word + 17);

else

arg_read_crypttab = r;

}

} else if (startswith(word, "luks.uuid=")) {

if (strv_extend(arg_proc_cmdline_disks, word + 10) < 0)

return log_oom();

} else if (startswith(word, "rd.luks.uuid=")) {

if (in_initrd()) {

if (strv_extend(arg_proc_cmdline_disks, word + 13) < 0)

return log_oom();

}

} else if (startswith(word, "luks.options=")) {

if (strv_extend(arg_proc_cmdline_options, word + 13) < 0)

return log_oom();

} else if (startswith(word, "rd.luks.options=")) {

if (in_initrd()) {

if (strv_extend(arg_proc_cmdline_options, word + 16) < 0)

return log_oom();

}

} else if (startswith(word, "luks.key=")) {

if (*arg_proc_cmdline_keyfile)

free(*arg_proc_cmdline_keyfile);

*arg_proc_cmdline_keyfile = strdup(word + 9);

if (!*arg_proc_cmdline_keyfile)

return log_oom();

} else if (startswith(word, "rd.luks.key=")) {

if (in_initrd()) {

if (*arg_proc_cmdline_keyfile)

free(*arg_proc_cmdline_keyfile);

*arg_proc_cmdline_keyfile = strdup(word + 12);

if (!*arg_proc_cmdline_keyfile)

return log_oom();

}

} else if (startswith(word, "luks.") ||

(in_initrd() && startswith(word, "rd.luks."))) {

log_warning("Unknown kernel switch %s. Ignoring.", word);

}

}

strv_uniq(*arg_proc_cmdline_disks);

return 0;

}

int main(int argc, char *argv[]) {

_cleanup_strv_free_ char **arg_proc_cmdline_disks_done = NULL;

_cleanup_strv_free_ char **arg_proc_cmdline_disks = NULL;

_cleanup_strv_free_ char **arg_proc_cmdline_options = NULL;

_cleanup_free_ char *arg_proc_cmdline_keyfile = NULL;

_cleanup_fclose_ FILE *f = NULL;

unsigned n = 0;

int r = EXIT_SUCCESS;

char **i;

if (argc > 1 && argc != 4) {

log_error("This program takes three or no arguments.");

return EXIT_FAILURE;

}

if (argc > 1)

arg_dest = argv[1];

log_set_target(LOG_TARGET_SAFE);

log_parse_environment();

log_open();

umask(0022);

if (parse_proc_cmdline(&arg_proc_cmdline_disks, &arg_proc_cmdline_options, &arg_proc_cmdline_keyfile) < 0)

return EXIT_FAILURE;

if (!arg_enabled)

return EXIT_SUCCESS;

if (arg_read_crypttab) {

struct stat st;

f = fopen("/etc/crypttab", "re");

if (!f) {

if (errno == ENOENT)

r = EXIT_SUCCESS;

else {

r = EXIT_FAILURE;

log_error("Failed to open /etc/crypttab: %m");

}

goto next;

}

if (fstat(fileno(f), &st) < 0) {

log_error("Failed to stat /etc/crypttab: %m");

r = EXIT_FAILURE;

goto next;

}

/* If we readd support for specifying passphrases

if (st.st_mode & 0005)

log_debug("/etc/crypttab is world-readable. This is usually not a good idea.");

for (;;) {

char line[LINE_MAX], *l;

_cleanup_free_ char *name = NULL, *device = NULL, *password = NULL, *options = NULL;

int k;

if (!fgets(line, sizeof(line), f))

break;

n++;

l = strstrip(line);

if (*l == '#' || *l == 0)

continue;

k = sscanf(l, "%ms %ms %ms %ms", &name, &device, &password, &options);

if (k < 2 || k > 4) {

log_error("Failed to parse /etc/crypttab:%u, ignoring.", n);

r = EXIT_FAILURE;

continue;

}

if (arg_proc_cmdline_options) {

/*

STRV_FOREACH(i, arg_proc_cmdline_options) {

_cleanup_free_ char *proc_uuid = NULL, *proc_options = NULL;

const char *p = *i;

k = sscanf(p, "%m[0-9a-fA-F-]=%ms", &proc_uuid, &proc_options);

if (k == 2 && streq(proc_uuid, device + 5)) {

if (options)

free(options);

options = strdup(p);

if (!proc_options)

return log_oom();

}

}

}

if (arg_proc_cmdline_disks) {

/*

STRV_FOREACH(i, arg_proc_cmdline_disks) {

_cleanup_free_ char *proc_device = NULL, *proc_name = NULL;

const char *p = *i;

if (startswith(p, "luks-"))

p += 5;

proc_name = strappend("luks-", p);

proc_device = strappend("UUID=", p);

if (!proc_name || !proc_device)

return log_oom();

if (streq(proc_device, device) || streq(proc_name, name)) {

if (create_disk(name, device, password, options) < 0)

r = EXIT_FAILURE;

if (strv_extend(&arg_proc_cmdline_disks_done, p) < 0)

return log_oom();

}

}

} else {

if (create_disk(name, device, password, options) < 0)

r = EXIT_FAILURE;

}

}

}

next:

STRV_FOREACH(i, arg_proc_cmdline_disks) {

/*

_cleanup_free_ char *name = NULL, *device = NULL, *options = NULL;

const char *p = *i;

if (startswith(p, "luks-"))

p += 5;

if (strv_contains(arg_proc_cmdline_disks_done, p))

continue;

name = strappend("luks-", p);

device = strappend("UUID=", p);

if (!name || !device)

return log_oom();

if (arg_proc_cmdline_options) {

/*

char **j;

STRV_FOREACH(j, arg_proc_cmdline_options) {

_cleanup_free_ char *proc_uuid = NULL, *proc_options = NULL;

const char *s = *j;

int k;

k = sscanf(s, "%m[0-9a-fA-F-]=%ms", &proc_uuid, &proc_options);

if (k == 2) {

if (streq(proc_uuid, device + 5)) {

if (options)

free(options);

options = strdup(proc_options);

if (!options)

return log_oom();

}

} else if (!options) {

/*

options = strdup(s);

if (!options)

return log_oom();

}

}

}

if (!options) {

options = strdup("timeout=0");

if (!options)

return log_oom();

}

if (create_disk(name, device, arg_proc_cmdline_keyfile, options) < 0)

r = EXIT_FAILURE;

}

return r;

}