917 lines
31 KiB
C
917 lines
31 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "alloc-util.h"
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#include "dropin.h"
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#include "escape.h"
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#include "fd-util.h"
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#include "fileio.h"
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#include "fstab-util.h"
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#include "generator.h"
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#include "hashmap.h"
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#include "id128-util.h"
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#include "log.h"
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#include "mkdir.h"
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#include "parse-util.h"
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#include "path-util.h"
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#include "proc-cmdline.h"
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#include "specifier.h"
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#include "string-util.h"
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#include "strv.h"
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#include "unit-name.h"
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#include "util.h"
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typedef struct crypto_device {
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char *uuid;
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char *keyfile;
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char *keydev;
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char *headerdev;
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char *datadev;
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char *name;
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char *options;
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bool create;
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} crypto_device;
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static const char *arg_dest = NULL;
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static bool arg_enabled = true;
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static bool arg_read_crypttab = true;
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static const char *arg_crypttab = NULL;
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static const char *arg_runtime_directory = NULL;
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static bool arg_allow_list = false;
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static Hashmap *arg_disks = NULL;
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static char *arg_default_options = NULL;
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static char *arg_default_keyfile = NULL;
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STATIC_DESTRUCTOR_REGISTER(arg_disks, hashmap_freep);
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STATIC_DESTRUCTOR_REGISTER(arg_default_options, freep);
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STATIC_DESTRUCTOR_REGISTER(arg_default_keyfile, freep);
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static int split_locationspec(const char *locationspec, char **ret_file, char **ret_device) {
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_cleanup_free_ char *file = NULL, *device = NULL;
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const char *c;
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assert(ret_file);
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assert(ret_device);
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if (!locationspec) {
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*ret_file = *ret_device = NULL;
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return 0;
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}
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c = strrchr(locationspec, ':');
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if (c) {
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/* The device part has to be either an absolute path to device node (/dev/something,
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* /dev/foo/something, or even possibly /dev/foo/something:part), or a fstab device
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* specification starting with LABEL= or similar. The file part has the same syntax.
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*
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* Let's try to guess if the second part looks like a device specification, or just part of a
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* filename with a colon. fstab_node_to_udev_node() will convert the fstab device syntax to
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* an absolute path. If we didn't get an absolute path, assume that it is just part of the
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* first file argument. */
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device = fstab_node_to_udev_node(c + 1);
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if (!device)
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return log_oom();
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if (path_is_absolute(device))
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file = strndup(locationspec, c-locationspec);
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else {
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log_debug("Location specification argument contains a colon, but \"%s\" doesn't look like a device specification.\n"
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"Assuming that \"%s\" is a single device specification.",
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c + 1, locationspec);
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device = mfree(device);
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c = NULL;
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}
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}
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if (!c)
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/* No device specified */
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file = strdup(locationspec);
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if (!file)
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return log_oom();
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*ret_file = TAKE_PTR(file);
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*ret_device = TAKE_PTR(device);
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return 0;
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}
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static int generate_device_mount(
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const char *name,
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const char *device,
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const char *type_prefix, /* "keydev" or "headerdev" */
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const char *device_timeout,
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bool canfail,
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bool readonly,
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char **unit,
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char **mount) {
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_cleanup_free_ char *u = NULL, *where = NULL, *name_escaped = NULL, *device_unit = NULL;
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_cleanup_fclose_ FILE *f = NULL;
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int r;
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usec_t timeout_us;
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assert(name);
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assert(device);
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assert(unit);
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assert(mount);
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r = mkdir_parents(arg_runtime_directory, 0755);
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if (r < 0)
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return r;
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r = mkdir(arg_runtime_directory, 0700);
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if (r < 0 && errno != EEXIST)
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return -errno;
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name_escaped = cescape(name);
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if (!name_escaped)
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return -ENOMEM;
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where = strjoin(arg_runtime_directory, "/", type_prefix, "-", name_escaped);
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if (!where)
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return -ENOMEM;
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r = mkdir(where, 0700);
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if (r < 0 && errno != EEXIST)
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return -errno;
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r = unit_name_from_path(where, ".mount", &u);
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if (r < 0)
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return r;
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r = generator_open_unit_file(arg_dest, NULL, u, &f);
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if (r < 0)
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return r;
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fprintf(f,
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"[Unit]\n"
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"DefaultDependencies=no\n\n"
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"[Mount]\n"
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"What=%s\n"
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"Where=%s\n"
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"Options=%s%s\n", device, where, readonly ? "ro" : "rw", canfail ? ",nofail" : "");
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if (device_timeout) {
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r = parse_sec_fix_0(device_timeout, &timeout_us);
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if (r >= 0) {
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r = unit_name_from_path(device, ".device", &device_unit);
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if (r < 0)
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return log_error_errno(r, "Failed to generate unit name: %m");
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r = write_drop_in_format(arg_dest, device_unit, 90, "device-timeout",
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"# Automatically generated by systemd-cryptsetup-generator \n\n"
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"[Unit]\nJobRunningTimeoutSec=%s", device_timeout);
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if (r < 0)
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return log_error_errno(r, "Failed to write device drop-in: %m");
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} else
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log_warning_errno(r, "Failed to parse %s, ignoring: %m", device_timeout);
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}
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r = fflush_and_check(f);
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if (r < 0)
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return r;
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*unit = TAKE_PTR(u);
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*mount = TAKE_PTR(where);
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return 0;
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}
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static int generate_device_umount(const char *name,
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const char *device_mount,
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const char *type_prefix, /* "keydev" or "headerdev" */
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char **ret_umount_unit) {
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_cleanup_fclose_ FILE *f = NULL;
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_cleanup_free_ char *u = NULL, *name_escaped = NULL, *mount = NULL;
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int r;
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assert(name);
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assert(ret_umount_unit);
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name_escaped = cescape(name);
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if (!name_escaped)
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return -ENOMEM;
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u = strjoin(type_prefix, "-", name_escaped, "-umount.service");
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if (!u)
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return -ENOMEM;
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r = unit_name_from_path(device_mount, ".mount", &mount);
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if (r < 0)
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return r;
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r = generator_open_unit_file(arg_dest, NULL, u, &f);
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if (r < 0)
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return r;
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fprintf(f,
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"[Unit]\n"
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"DefaultDependencies=no\n"
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"After=%s\n\n"
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"[Service]\n"
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"ExecStart=-" UMOUNT_PATH " %s\n\n", mount, device_mount);
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r = fflush_and_check(f);
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if (r < 0)
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return r;
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*ret_umount_unit = TAKE_PTR(u);
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return 0;
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}
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static int print_dependencies(FILE *f, const char* device_path) {
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int r;
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if (STR_IN_SET(device_path, "-", "none"))
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/* None, nothing to do */
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return 0;
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if (PATH_IN_SET(device_path,
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"/dev/urandom",
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"/dev/random",
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"/dev/hw_random",
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"/dev/hwrng")) {
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/* RNG device, add random dep */
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fputs("After=systemd-random-seed.service\n", f);
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return 0;
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}
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_cleanup_free_ char *udev_node = fstab_node_to_udev_node(device_path);
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if (!udev_node)
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return log_oom();
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if (path_equal(udev_node, "/dev/null"))
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return 0;
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if (path_startswith(udev_node, "/dev/")) {
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/* We are dealing with a block device, add dependency for corresponding unit */
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_cleanup_free_ char *unit = NULL;
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r = unit_name_from_path(udev_node, ".device", &unit);
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if (r < 0)
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return log_error_errno(r, "Failed to generate unit name: %m");
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fprintf(f,
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"After=%1$s\n"
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"Requires=%1$s\n", unit);
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} else {
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/* Regular file, add mount dependency */
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_cleanup_free_ char *escaped_path = specifier_escape(device_path);
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if (!escaped_path)
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return log_oom();
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fprintf(f, "RequiresMountsFor=%s\n", escaped_path);
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}
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return 0;
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}
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static int create_disk(
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const char *name,
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const char *device,
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const char *password,
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const char *keydev,
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const char *headerdev,
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const char *options,
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const char *source) {
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_cleanup_free_ char *n = NULL, *d = NULL, *u = NULL, *e = NULL,
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*keydev_mount = NULL, *keyfile_timeout_value = NULL,
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*filtered = NULL, *u_escaped = NULL, *name_escaped = NULL, *header_path = NULL, *password_buffer = NULL,
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*tmp_fstype = NULL, *filtered_header = NULL, *headerdev_mount = NULL;
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_cleanup_fclose_ FILE *f = NULL;
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const char *dmname;
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bool noauto, nofail, swap, netdev, attach_in_initrd;
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int r, detached_header, keyfile_can_timeout, tmp;
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assert(name);
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assert(device);
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noauto = fstab_test_yes_no_option(options, "noauto\0" "auto\0");
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nofail = fstab_test_yes_no_option(options, "nofail\0" "fail\0");
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swap = fstab_test_option(options, "swap\0");
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netdev = fstab_test_option(options, "_netdev\0");
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attach_in_initrd = fstab_test_option(options, "x-initrd.attach\0");
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keyfile_can_timeout = fstab_filter_options(options, "keyfile-timeout\0", NULL, &keyfile_timeout_value, NULL);
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if (keyfile_can_timeout < 0)
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return log_error_errno(keyfile_can_timeout, "Failed to parse keyfile-timeout= option value: %m");
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detached_header = fstab_filter_options(
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options,
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"header\0",
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NULL,
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&header_path,
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headerdev ? &filtered_header : NULL);
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if (detached_header < 0)
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return log_error_errno(detached_header, "Failed to parse header= option value: %m");
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tmp = fstab_filter_options(options, "tmp\0", NULL, &tmp_fstype, NULL);
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if (tmp < 0)
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return log_error_errno(tmp, "Failed to parse tmp= option value: %m");
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if (tmp && swap)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
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"Device '%s' cannot be both 'tmp' and 'swap'. Ignoring.",
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name);
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name_escaped = specifier_escape(name);
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if (!name_escaped)
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return log_oom();
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e = unit_name_escape(name);
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if (!e)
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return log_oom();
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u = fstab_node_to_udev_node(device);
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if (!u)
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return log_oom();
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r = unit_name_build("systemd-cryptsetup", e, ".service", &n);
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if (r < 0)
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return log_error_errno(r, "Failed to generate unit name: %m");
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u_escaped = specifier_escape(u);
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if (!u_escaped)
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return log_oom();
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r = unit_name_from_path(u, ".device", &d);
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if (r < 0)
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return log_error_errno(r, "Failed to generate unit name: %m");
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if (keydev && !password)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
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"Key device is specified, but path to the password file is missing.");
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r = generator_open_unit_file(arg_dest, NULL, n, &f);
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if (r < 0)
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return r;
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r = generator_write_cryptsetup_unit_section(f, source);
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if (r < 0)
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return r;
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if (netdev)
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fprintf(f, "After=remote-fs-pre.target\n");
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/* If initrd takes care of attaching the disk then it should also detach it during shutdown. */
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if (!attach_in_initrd)
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fprintf(f, "Conflicts=umount.target\n");
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if (keydev) {
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_cleanup_free_ char *unit = NULL, *umount_unit = NULL;
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r = generate_device_mount(
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name,
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keydev,
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"keydev",
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keyfile_timeout_value,
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/* canfail = */ keyfile_can_timeout > 0,
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/* readonly= */ true,
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&unit,
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&keydev_mount);
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if (r < 0)
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return log_error_errno(r, "Failed to generate keydev mount unit: %m");
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r = generate_device_umount(name, keydev_mount, "keydev", &umount_unit);
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if (r < 0)
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return log_error_errno(r, "Failed to generate keydev umount unit: %m");
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password_buffer = path_join(keydev_mount, password);
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if (!password_buffer)
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return log_oom();
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password = password_buffer;
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fprintf(f, "After=%s\n", unit);
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if (keyfile_can_timeout > 0)
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fprintf(f, "Wants=%s\n", unit);
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else
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fprintf(f, "Requires=%s\n", unit);
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if (umount_unit)
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fprintf(f,
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"Wants=%s\n"
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"Before=%s\n",
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umount_unit,
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umount_unit
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);
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}
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if (headerdev) {
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_cleanup_free_ char *unit = NULL, *umount_unit = NULL, *p = NULL;
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r = generate_device_mount(
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name,
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headerdev,
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"headerdev",
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NULL,
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/* canfail= */ false, /* header is always necessary */
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/* readonly= */ false, /* LUKS2 recovery requires rw header access */
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&unit,
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&headerdev_mount);
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if (r < 0)
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return log_error_errno(r, "Failed to generate header device mount unit: %m");
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r = generate_device_umount(name, headerdev_mount, "headerdev", &umount_unit);
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if (r < 0)
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return log_error_errno(r, "Failed to generate header device umount unit: %m");
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p = path_join(headerdev_mount, header_path);
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if (!p)
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return log_oom();
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free_and_replace(header_path, p);
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if (isempty(filtered_header))
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p = strjoin("header=", header_path);
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else
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p = strjoin(filtered_header, ",header=", header_path);
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if (!p)
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return log_oom();
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free_and_replace(filtered_header, p);
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options = filtered_header;
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fprintf(f, "After=%s\n"
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"Requires=%s\n", unit, unit);
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if (umount_unit)
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fprintf(f,
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"Wants=%s\n"
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"Before=%s\n",
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umount_unit,
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umount_unit
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);
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}
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if (!nofail)
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fprintf(f,
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"Before=%s\n",
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netdev ? "remote-cryptsetup.target" : "cryptsetup.target");
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if (password && !keydev) {
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r = print_dependencies(f, password);
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if (r < 0)
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return r;
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}
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|
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/* Check if a header option was specified */
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if (detached_header > 0 && !headerdev) {
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r = print_dependencies(f, header_path);
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if (r < 0)
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return r;
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}
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if (path_startswith(u, "/dev/"))
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fprintf(f,
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"BindsTo=%s\n"
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"After=%s\n"
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"Before=umount.target\n",
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d, d);
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else
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/* For loopback devices, add systemd-tmpfiles-setup-dev.service
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dependency to ensure that loopback support is available in
|
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the kernel (/dev/loop-control needs to exist) */
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fprintf(f,
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"RequiresMountsFor=%s\n"
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"Requires=systemd-tmpfiles-setup-dev.service\n"
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"After=systemd-tmpfiles-setup-dev.service\n",
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u_escaped);
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r = generator_write_timeouts(arg_dest, device, name, options, &filtered);
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if (r < 0)
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log_warning_errno(r, "Failed to write device timeout drop-in: %m");
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r = generator_write_cryptsetup_service_section(f, name, u, password, filtered);
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if (r < 0)
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return r;
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if (tmp) {
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_cleanup_free_ char *tmp_fstype_escaped = NULL;
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|
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if (tmp_fstype) {
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tmp_fstype_escaped = specifier_escape(tmp_fstype);
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if (!tmp_fstype_escaped)
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return log_oom();
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}
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|
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fprintf(f,
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"ExecStartPost=" ROOTLIBEXECDIR "/systemd-makefs '%s' '/dev/mapper/%s'\n",
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tmp_fstype_escaped ?: "ext4", name_escaped);
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}
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|
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if (swap)
|
|
fprintf(f,
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"ExecStartPost=" ROOTLIBEXECDIR "/systemd-makefs swap '/dev/mapper/%s'\n",
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name_escaped);
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|
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r = fflush_and_check(f);
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|
if (r < 0)
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return log_error_errno(r, "Failed to write unit file %s: %m", n);
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|
|
if (!noauto) {
|
|
r = generator_add_symlink(arg_dest,
|
|
netdev ? "remote-cryptsetup.target" : "cryptsetup.target",
|
|
nofail ? "wants" : "requires", n);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
dmname = strjoina("dev-mapper-", e, ".device");
|
|
r = generator_add_symlink(arg_dest, dmname, "requires", n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!noauto && !nofail) {
|
|
r = write_drop_in(arg_dest, dmname, 40, "device-timeout",
|
|
"# Automatically generated by systemd-cryptsetup-generator\n\n"
|
|
"[Unit]\nJobTimeoutSec=0");
|
|
if (r < 0)
|
|
log_warning_errno(r, "Failed to write device timeout drop-in: %m");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static crypto_device* crypt_device_free(crypto_device *d) {
|
|
if (!d)
|
|
return NULL;
|
|
|
|
free(d->uuid);
|
|
free(d->keyfile);
|
|
free(d->keydev);
|
|
free(d->name);
|
|
free(d->options);
|
|
return mfree(d);
|
|
}
|
|
|
|
static crypto_device *get_crypto_device(const char *uuid) {
|
|
int r;
|
|
crypto_device *d;
|
|
|
|
assert(uuid);
|
|
|
|
d = hashmap_get(arg_disks, uuid);
|
|
if (!d) {
|
|
d = new0(struct crypto_device, 1);
|
|
if (!d)
|
|
return NULL;
|
|
|
|
d->uuid = strdup(uuid);
|
|
if (!d->uuid)
|
|
return mfree(d);
|
|
|
|
r = hashmap_put(arg_disks, d->uuid, d);
|
|
if (r < 0) {
|
|
free(d->uuid);
|
|
return mfree(d);
|
|
}
|
|
}
|
|
|
|
return d;
|
|
}
|
|
|
|
static bool warn_uuid_invalid(const char *uuid, const char *key) {
|
|
assert(key);
|
|
|
|
if (!id128_is_valid(uuid)) {
|
|
log_warning("Failed to parse %s= kernel command line switch. UUID is invalid, ignoring.", key);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static int filter_header_device(const char *options,
|
|
char **ret_headerdev,
|
|
char **ret_filtered_headerdev_options) {
|
|
int r;
|
|
_cleanup_free_ char *headerfile = NULL, *headerdev = NULL, *headerspec = NULL,
|
|
*filtered_headerdev = NULL, *filtered_headerspec = NULL;
|
|
|
|
assert(ret_headerdev);
|
|
assert(ret_filtered_headerdev_options);
|
|
|
|
r = fstab_filter_options(options, "header\0", NULL, &headerspec, &filtered_headerspec);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse header= option value: %m");
|
|
|
|
if (r > 0) {
|
|
r = split_locationspec(headerspec, &headerfile, &headerdev);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (isempty(filtered_headerspec))
|
|
filtered_headerdev = strjoin("header=", headerfile);
|
|
else
|
|
filtered_headerdev = strjoin(filtered_headerspec, ",header=", headerfile);
|
|
|
|
if (!filtered_headerdev)
|
|
return log_oom();
|
|
} else
|
|
filtered_headerdev = TAKE_PTR(filtered_headerspec);
|
|
|
|
*ret_filtered_headerdev_options = TAKE_PTR(filtered_headerdev);
|
|
*ret_headerdev = TAKE_PTR(headerdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
|
|
_cleanup_free_ char *uuid = NULL, *uuid_value = NULL;
|
|
crypto_device *d;
|
|
int r;
|
|
|
|
if (streq(key, "luks")) {
|
|
|
|
r = value ? parse_boolean(value) : 1;
|
|
if (r < 0)
|
|
log_warning("Failed to parse luks= kernel command line switch %s. Ignoring.", value);
|
|
else
|
|
arg_enabled = r;
|
|
|
|
} else if (streq(key, "luks.crypttab")) {
|
|
|
|
r = value ? parse_boolean(value) : 1;
|
|
if (r < 0)
|
|
log_warning("Failed to parse luks.crypttab= kernel command line switch %s. Ignoring.", value);
|
|
else
|
|
arg_read_crypttab = r;
|
|
|
|
} else if (streq(key, "luks.uuid")) {
|
|
|
|
if (proc_cmdline_value_missing(key, value))
|
|
return 0;
|
|
|
|
d = get_crypto_device(startswith(value, "luks-") ?: value);
|
|
if (!d)
|
|
return log_oom();
|
|
|
|
d->create = arg_allow_list = true;
|
|
|
|
} else if (streq(key, "luks.options")) {
|
|
_cleanup_free_ char *headerdev = NULL, *filtered_headerdev_options = NULL;
|
|
|
|
if (proc_cmdline_value_missing(key, value))
|
|
return 0;
|
|
|
|
r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value);
|
|
if (r != 2)
|
|
return free_and_strdup(&arg_default_options, value) < 0 ? log_oom() : 0;
|
|
|
|
if (warn_uuid_invalid(uuid, key))
|
|
return 0;
|
|
|
|
d = get_crypto_device(uuid);
|
|
if (!d)
|
|
return log_oom();
|
|
|
|
r = filter_header_device(uuid_value, &headerdev, &filtered_headerdev_options);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
free_and_replace(d->options, filtered_headerdev_options);
|
|
free_and_replace(d->headerdev, headerdev);
|
|
} else if (streq(key, "luks.key")) {
|
|
size_t n;
|
|
_cleanup_free_ char *keyfile = NULL, *keydev = NULL;
|
|
const char *keyspec;
|
|
|
|
if (proc_cmdline_value_missing(key, value))
|
|
return 0;
|
|
|
|
n = strspn(value, ALPHANUMERICAL "-");
|
|
if (value[n] != '=') {
|
|
if (free_and_strdup(&arg_default_keyfile, value) < 0)
|
|
return log_oom();
|
|
return 0;
|
|
}
|
|
|
|
uuid = strndup(value, n);
|
|
if (!uuid)
|
|
return log_oom();
|
|
|
|
if (warn_uuid_invalid(uuid, key))
|
|
return 0;
|
|
|
|
d = get_crypto_device(uuid);
|
|
if (!d)
|
|
return log_oom();
|
|
|
|
keyspec = value + n + 1;
|
|
r = split_locationspec(keyspec, &keyfile, &keydev);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
free_and_replace(d->keyfile, keyfile);
|
|
free_and_replace(d->keydev, keydev);
|
|
} else if (streq(key, "luks.data")) {
|
|
size_t n;
|
|
_cleanup_free_ char *datadev = NULL;
|
|
|
|
if (proc_cmdline_value_missing(key, value))
|
|
return 0;
|
|
|
|
n = strspn(value, ALPHANUMERICAL "-");
|
|
if (value[n] != '=') {
|
|
log_warning("Failed to parse luks.data= kernel command line switch. UUID is invalid, ignoring.");
|
|
return 0;
|
|
}
|
|
|
|
uuid = strndup(value, n);
|
|
if (!uuid)
|
|
return log_oom();
|
|
|
|
if (warn_uuid_invalid(uuid, key))
|
|
return 0;
|
|
|
|
d = get_crypto_device(uuid);
|
|
if (!d)
|
|
return log_oom();
|
|
|
|
datadev = fstab_node_to_udev_node(value + n + 1);
|
|
if (!datadev)
|
|
return log_oom();
|
|
|
|
free_and_replace(d->datadev, datadev);
|
|
} else if (streq(key, "luks.name")) {
|
|
|
|
if (proc_cmdline_value_missing(key, value))
|
|
return 0;
|
|
|
|
r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value);
|
|
if (r == 2) {
|
|
d = get_crypto_device(uuid);
|
|
if (!d)
|
|
return log_oom();
|
|
|
|
d->create = arg_allow_list = true;
|
|
|
|
free_and_replace(d->name, uuid_value);
|
|
} else
|
|
log_warning("Failed to parse luks name switch %s. Ignoring.", value);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int add_crypttab_devices(void) {
|
|
_cleanup_fclose_ FILE *f = NULL;
|
|
unsigned crypttab_line = 0;
|
|
int r;
|
|
|
|
if (!arg_read_crypttab)
|
|
return 0;
|
|
|
|
r = fopen_unlocked(arg_crypttab, "re", &f);
|
|
if (r < 0) {
|
|
if (errno != ENOENT)
|
|
log_error_errno(errno, "Failed to open %s: %m", arg_crypttab);
|
|
return 0;
|
|
}
|
|
|
|
for (;;) {
|
|
_cleanup_free_ char *line = NULL, *name = NULL, *device = NULL, *keyspec = NULL, *options = NULL,
|
|
*keyfile = NULL, *keydev = NULL, *headerdev = NULL, *filtered_header = NULL;
|
|
crypto_device *d = NULL;
|
|
char *l, *uuid;
|
|
int k;
|
|
|
|
r = read_line(f, LONG_LINE_MAX, &line);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to read %s: %m", arg_crypttab);
|
|
if (r == 0)
|
|
break;
|
|
|
|
crypttab_line++;
|
|
|
|
l = strstrip(line);
|
|
if (IN_SET(l[0], 0, '#'))
|
|
continue;
|
|
|
|
k = sscanf(l, "%ms %ms %ms %ms", &name, &device, &keyspec, &options);
|
|
if (k < 2 || k > 4) {
|
|
log_error("Failed to parse %s:%u, ignoring.", arg_crypttab, crypttab_line);
|
|
continue;
|
|
}
|
|
|
|
uuid = startswith(device, "UUID=");
|
|
if (!uuid)
|
|
uuid = path_startswith(device, "/dev/disk/by-uuid/");
|
|
if (!uuid)
|
|
uuid = startswith(name, "luks-");
|
|
if (uuid)
|
|
d = hashmap_get(arg_disks, uuid);
|
|
|
|
if (arg_allow_list && !d) {
|
|
log_info("Not creating device '%s' because it was not specified on the kernel command line.", name);
|
|
continue;
|
|
}
|
|
|
|
r = split_locationspec(keyspec, &keyfile, &keydev);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (options && (!d || !d->options)) {
|
|
r = filter_header_device(options, &headerdev, &filtered_header);
|
|
if (r < 0)
|
|
return r;
|
|
free_and_replace(options, filtered_header);
|
|
}
|
|
|
|
r = create_disk(name,
|
|
device,
|
|
keyfile,
|
|
keydev,
|
|
(d && d->options) ? d->headerdev : headerdev,
|
|
(d && d->options) ? d->options : options,
|
|
arg_crypttab);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (d)
|
|
d->create = false;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int add_proc_cmdline_devices(void) {
|
|
int r;
|
|
crypto_device *d;
|
|
|
|
HASHMAP_FOREACH(d, arg_disks) {
|
|
_cleanup_free_ char *device = NULL;
|
|
|
|
if (!d->create)
|
|
continue;
|
|
|
|
if (!d->name) {
|
|
d->name = strjoin("luks-", d->uuid);
|
|
if (!d->name)
|
|
return log_oom();
|
|
}
|
|
|
|
device = strjoin("UUID=", d->uuid);
|
|
if (!device)
|
|
return log_oom();
|
|
|
|
r = create_disk(d->name,
|
|
d->datadev ?: device,
|
|
d->keyfile ?: arg_default_keyfile,
|
|
d->keydev,
|
|
d->headerdev,
|
|
d->options ?: arg_default_options,
|
|
"/proc/cmdline");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(crypt_device_hash_ops, char, string_hash_func, string_compare_func,
|
|
crypto_device, crypt_device_free);
|
|
|
|
static int run(const char *dest, const char *dest_early, const char *dest_late) {
|
|
int r;
|
|
|
|
assert_se(arg_dest = dest);
|
|
|
|
arg_crypttab = getenv("SYSTEMD_CRYPTTAB") ?: "/etc/crypttab";
|
|
arg_runtime_directory = getenv("RUNTIME_DIRECTORY") ?: "/run/systemd/cryptsetup";
|
|
|
|
arg_disks = hashmap_new(&crypt_device_hash_ops);
|
|
if (!arg_disks)
|
|
return log_oom();
|
|
|
|
r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX);
|
|
if (r < 0)
|
|
return log_warning_errno(r, "Failed to parse kernel command line: %m");
|
|
|
|
if (!arg_enabled)
|
|
return 0;
|
|
|
|
r = add_crypttab_devices();
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = add_proc_cmdline_devices();
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_MAIN_GENERATOR_FUNCTION(run);
|