From b750101eb236130cf056c675997decbac904cc49 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:35:18 +0200 Subject: Adding upstream version 252.22. Signed-off-by: Daniel Baumann --- src/cryptsetup/cryptsetup-generator.c | 929 ++++++++++++++++++++++++++++++++++ 1 file changed, 929 insertions(+) create mode 100644 src/cryptsetup/cryptsetup-generator.c (limited to 'src/cryptsetup/cryptsetup-generator.c') diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c new file mode 100644 index 0000000..07903f1 --- /dev/null +++ b/src/cryptsetup/cryptsetup-generator.c @@ -0,0 +1,929 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include +#include +#include +#include + +#include "alloc-util.h" +#include "dropin.h" +#include "escape.h" +#include "fd-util.h" +#include "fileio.h" +#include "fstab-util.h" +#include "generator.h" +#include "hashmap.h" +#include "id128-util.h" +#include "log.h" +#include "mkdir.h" +#include "parse-util.h" +#include "path-util.h" +#include "proc-cmdline.h" +#include "specifier.h" +#include "string-util.h" +#include "strv.h" +#include "unit-name.h" +#include "util.h" + +typedef struct crypto_device { + char *uuid; + char *keyfile; + char *keydev; + char *headerdev; + char *datadev; + char *name; + char *options; + bool create; +} crypto_device; + +static const char *arg_dest = NULL; +static bool arg_enabled = true; +static bool arg_read_crypttab = true; +static const char *arg_crypttab = NULL; +static const char *arg_runtime_directory = NULL; +static bool arg_allow_list = false; +static Hashmap *arg_disks = NULL; +static char *arg_default_options = NULL; +static char *arg_default_keyfile = NULL; + +STATIC_DESTRUCTOR_REGISTER(arg_disks, hashmap_freep); +STATIC_DESTRUCTOR_REGISTER(arg_default_options, freep); +STATIC_DESTRUCTOR_REGISTER(arg_default_keyfile, freep); + +static int split_locationspec(const char *locationspec, char **ret_file, char **ret_device) { + _cleanup_free_ char *file = NULL, *device = NULL; + const char *c; + + assert(ret_file); + assert(ret_device); + + if (!locationspec) { + *ret_file = *ret_device = NULL; + return 0; + } + + c = strrchr(locationspec, ':'); + if (c) { + /* The device part has to be either an absolute path to device node (/dev/something, + * /dev/foo/something, or even possibly /dev/foo/something:part), or a fstab device + * specification starting with LABEL= or similar. The file part has the same syntax. + * + * Let's try to guess if the second part looks like a device specification, or just part of a + * filename with a colon. fstab_node_to_udev_node() will convert the fstab device syntax to + * an absolute path. If we didn't get an absolute path, assume that it is just part of the + * first file argument. */ + + device = fstab_node_to_udev_node(c + 1); + if (!device) + return log_oom(); + + if (path_is_absolute(device)) + file = strndup(locationspec, c-locationspec); + else { + log_debug("Location specification argument contains a colon, but \"%s\" doesn't look like a device specification.\n" + "Assuming that \"%s\" is a single device specification.", + c + 1, locationspec); + device = mfree(device); + c = NULL; + } + } + + if (!c) + /* No device specified */ + file = strdup(locationspec); + + if (!file) + return log_oom(); + + *ret_file = TAKE_PTR(file); + *ret_device = TAKE_PTR(device); + + return 0; +} + +static int generate_device_mount( + const char *name, + const char *device, + const char *type_prefix, /* "keydev" or "headerdev" */ + const char *device_timeout, + bool canfail, + bool readonly, + char **unit, + char **mount) { + + _cleanup_free_ char *u = NULL, *where = NULL, *name_escaped = NULL, *device_unit = NULL; + _cleanup_fclose_ FILE *f = NULL; + int r; + usec_t timeout_us; + + assert(name); + assert(device); + assert(unit); + assert(mount); + + r = mkdir_parents(arg_runtime_directory, 0755); + if (r < 0) + return r; + + r = mkdir(arg_runtime_directory, 0700); + if (r < 0 && errno != EEXIST) + return -errno; + + name_escaped = cescape(name); + if (!name_escaped) + return -ENOMEM; + + where = strjoin(arg_runtime_directory, "/", type_prefix, "-", name_escaped); + if (!where) + return -ENOMEM; + + r = mkdir(where, 0700); + if (r < 0 && errno != EEXIST) + return -errno; + + r = unit_name_from_path(where, ".mount", &u); + if (r < 0) + return r; + + r = generator_open_unit_file(arg_dest, NULL, u, &f); + if (r < 0) + return r; + + fprintf(f, + "[Unit]\n" + "DefaultDependencies=no\n\n" + "[Mount]\n" + "What=%s\n" + "Where=%s\n" + "Options=%s%s\n", device, where, readonly ? "ro" : "rw", canfail ? ",nofail" : ""); + + if (device_timeout) { + r = parse_sec_fix_0(device_timeout, &timeout_us); + if (r >= 0) { + r = unit_name_from_path(device, ".device", &device_unit); + if (r < 0) + return log_error_errno(r, "Failed to generate unit name: %m"); + + r = write_drop_in_format(arg_dest, device_unit, 90, "device-timeout", + "# Automatically generated by systemd-cryptsetup-generator \n\n" + "[Unit]\nJobRunningTimeoutSec=%s", device_timeout); + if (r < 0) + return log_error_errno(r, "Failed to write device drop-in: %m"); + + } else + log_warning_errno(r, "Failed to parse %s, ignoring: %m", device_timeout); + + } + + r = fflush_and_check(f); + if (r < 0) + return r; + + *unit = TAKE_PTR(u); + *mount = TAKE_PTR(where); + + return 0; +} + +static int generate_device_umount(const char *name, + const char *device_mount, + const char *type_prefix, /* "keydev" or "headerdev" */ + char **ret_umount_unit) { + _cleanup_fclose_ FILE *f = NULL; + _cleanup_free_ char *u = NULL, *name_escaped = NULL, *mount = NULL; + int r; + + assert(name); + assert(ret_umount_unit); + + name_escaped = cescape(name); + if (!name_escaped) + return -ENOMEM; + + u = strjoin(type_prefix, "-", name_escaped, "-umount.service"); + if (!u) + return -ENOMEM; + + r = unit_name_from_path(device_mount, ".mount", &mount); + if (r < 0) + return r; + + r = generator_open_unit_file(arg_dest, NULL, u, &f); + if (r < 0) + return r; + + fprintf(f, + "[Unit]\n" + "DefaultDependencies=no\n" + "After=%s\n\n" + "[Service]\n" + "ExecStart=-" UMOUNT_PATH " %s\n\n", mount, device_mount); + + r = fflush_and_check(f); + if (r < 0) + return r; + + *ret_umount_unit = TAKE_PTR(u); + return 0; +} + +static int print_dependencies(FILE *f, const char* device_path, const char* timeout_value, bool canfail) { + int r; + + assert(!canfail || timeout_value); + + if (STR_IN_SET(device_path, "-", "none")) + /* None, nothing to do */ + return 0; + + if (PATH_IN_SET(device_path, + "/dev/urandom", + "/dev/random", + "/dev/hw_random", + "/dev/hwrng")) { + /* RNG device, add random dep */ + fputs("After=systemd-random-seed.service\n", f); + return 0; + } + + _cleanup_free_ char *udev_node = fstab_node_to_udev_node(device_path); + if (!udev_node) + return log_oom(); + + if (path_equal(udev_node, "/dev/null")) + return 0; + + if (path_startswith(udev_node, "/dev/")) { + /* We are dealing with a block device, add dependency for corresponding unit */ + _cleanup_free_ char *unit = NULL; + + r = unit_name_from_path(udev_node, ".device", &unit); + if (r < 0) + return log_error_errno(r, "Failed to generate unit name: %m"); + + fprintf(f, "After=%1$s\n", unit); + if (canfail) { + fprintf(f, "Wants=%1$s\n", unit); + r = write_drop_in_format(arg_dest, unit, 90, "device-timeout", + "# Automatically generated by systemd-cryptsetup-generator \n\n" + "[Unit]\nJobRunningTimeoutSec=%s", timeout_value); + if (r < 0) + return log_error_errno(r, "Failed to write device drop-in: %m"); + } else + fprintf(f, "Requires=%1$s\n", unit); + } else { + /* Regular file, add mount dependency */ + _cleanup_free_ char *escaped_path = specifier_escape(device_path); + if (!escaped_path) + return log_oom(); + + fprintf(f, "RequiresMountsFor=%s\n", escaped_path); + } + + return 0; +} + +static int create_disk( + const char *name, + const char *device, + const char *key_file, + const char *keydev, + const char *headerdev, + const char *options, + const char *source) { + + _cleanup_free_ char *n = NULL, *d = NULL, *u = NULL, *e = NULL, + *keydev_mount = NULL, *keyfile_timeout_value = NULL, + *filtered = NULL, *u_escaped = NULL, *name_escaped = NULL, *header_path = NULL, *key_file_buffer = NULL, + *tmp_fstype = NULL, *filtered_header = NULL, *headerdev_mount = NULL; + _cleanup_fclose_ FILE *f = NULL; + const char *dmname; + bool noauto, nofail, swap, netdev, attach_in_initrd; + int r, detached_header, keyfile_can_timeout, tmp; + + assert(name); + assert(device); + + noauto = fstab_test_yes_no_option(options, "noauto\0" "auto\0"); + nofail = fstab_test_yes_no_option(options, "nofail\0" "fail\0"); + swap = fstab_test_option(options, "swap\0"); + netdev = fstab_test_option(options, "_netdev\0"); + attach_in_initrd = fstab_test_option(options, "x-initrd.attach\0"); + + keyfile_can_timeout = fstab_filter_options(options, + "keyfile-timeout\0", + NULL, &keyfile_timeout_value, NULL, NULL); + if (keyfile_can_timeout < 0) + return log_error_errno(keyfile_can_timeout, "Failed to parse keyfile-timeout= option value: %m"); + + detached_header = fstab_filter_options( + options, + "header\0", + NULL, + &header_path, + NULL, + headerdev ? &filtered_header : NULL); + if (detached_header < 0) + return log_error_errno(detached_header, "Failed to parse header= option value: %m"); + + tmp = fstab_filter_options(options, "tmp\0", NULL, &tmp_fstype, NULL, NULL); + if (tmp < 0) + return log_error_errno(tmp, "Failed to parse tmp= option value: %m"); + + if (tmp && swap) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Device '%s' cannot be both 'tmp' and 'swap'. Ignoring.", + name); + + name_escaped = specifier_escape(name); + if (!name_escaped) + return log_oom(); + + e = unit_name_escape(name); + if (!e) + return log_oom(); + + u = fstab_node_to_udev_node(device); + if (!u) + return log_oom(); + + r = unit_name_build("systemd-cryptsetup", e, ".service", &n); + if (r < 0) + return log_error_errno(r, "Failed to generate unit name: %m"); + + u_escaped = specifier_escape(u); + if (!u_escaped) + return log_oom(); + + r = unit_name_from_path(u, ".device", &d); + if (r < 0) + return log_error_errno(r, "Failed to generate unit name: %m"); + + if (keydev && !key_file) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Key device is specified, but path to the key file is missing."); + + r = generator_open_unit_file(arg_dest, NULL, n, &f); + if (r < 0) + return r; + + r = generator_write_cryptsetup_unit_section(f, source); + if (r < 0) + return r; + + if (netdev) + fprintf(f, "After=remote-fs-pre.target\n"); + + /* If initrd takes care of attaching the disk then it should also detach it during shutdown. */ + if (!attach_in_initrd) + fprintf(f, "Conflicts=umount.target\n"); + + if (keydev) { + _cleanup_free_ char *unit = NULL, *umount_unit = NULL; + + r = generate_device_mount( + name, + keydev, + "keydev", + keyfile_timeout_value, + /* canfail = */ keyfile_can_timeout > 0, + /* readonly= */ true, + &unit, + &keydev_mount); + if (r < 0) + return log_error_errno(r, "Failed to generate keydev mount unit: %m"); + + r = generate_device_umount(name, keydev_mount, "keydev", &umount_unit); + if (r < 0) + return log_error_errno(r, "Failed to generate keydev umount unit: %m"); + + key_file_buffer = path_join(keydev_mount, key_file); + if (!key_file_buffer) + return log_oom(); + + key_file = key_file_buffer; + + fprintf(f, "After=%s\n", unit); + if (keyfile_can_timeout > 0) + fprintf(f, "Wants=%s\n", unit); + else + fprintf(f, "Requires=%s\n", unit); + + if (umount_unit) + fprintf(f, + "Wants=%s\n" + "Before=%s\n", + umount_unit, + umount_unit + ); + } + + if (headerdev) { + _cleanup_free_ char *unit = NULL, *umount_unit = NULL, *p = NULL; + + r = generate_device_mount( + name, + headerdev, + "headerdev", + NULL, + /* canfail= */ false, /* header is always necessary */ + /* readonly= */ false, /* LUKS2 recovery requires rw header access */ + &unit, + &headerdev_mount); + if (r < 0) + return log_error_errno(r, "Failed to generate header device mount unit: %m"); + + r = generate_device_umount(name, headerdev_mount, "headerdev", &umount_unit); + if (r < 0) + return log_error_errno(r, "Failed to generate header device umount unit: %m"); + + p = path_join(headerdev_mount, header_path); + if (!p) + return log_oom(); + + free_and_replace(header_path, p); + + if (isempty(filtered_header)) + p = strjoin("header=", header_path); + else + p = strjoin(filtered_header, ",header=", header_path); + + if (!p) + return log_oom(); + + free_and_replace(filtered_header, p); + options = filtered_header; + + fprintf(f, "After=%s\n" + "Requires=%s\n", unit, unit); + + if (umount_unit) + fprintf(f, + "Wants=%s\n" + "Before=%s\n", + umount_unit, + umount_unit + ); + } + + if (!nofail) + fprintf(f, + "Before=%s\n", + netdev ? "remote-cryptsetup.target" : "cryptsetup.target"); + + if (key_file && !keydev) { + r = print_dependencies(f, key_file, + keyfile_timeout_value, + /* canfail= */ keyfile_can_timeout > 0); + if (r < 0) + return r; + } + + /* Check if a header option was specified */ + if (detached_header > 0 && !headerdev) { + r = print_dependencies(f, header_path, + NULL, + /* canfail= */ false); /* header is always necessary */ + if (r < 0) + return r; + } + + if (path_startswith(u, "/dev/")) + fprintf(f, + "BindsTo=%s\n" + "After=%s\n" + "Before=umount.target\n", + d, d); + else + /* For loopback devices, add systemd-tmpfiles-setup-dev.service + dependency to ensure that loopback support is available in + the kernel (/dev/loop-control needs to exist) */ + fprintf(f, + "RequiresMountsFor=%s\n" + "Requires=systemd-tmpfiles-setup-dev.service\n" + "After=systemd-tmpfiles-setup-dev.service\n", + u_escaped); + + r = generator_write_timeouts(arg_dest, device, name, options, &filtered); + if (r < 0) + log_warning_errno(r, "Failed to write device timeout drop-in: %m"); + + r = generator_write_cryptsetup_service_section(f, name, u, key_file, filtered); + if (r < 0) + return r; + + if (tmp) { + _cleanup_free_ char *tmp_fstype_escaped = NULL; + + if (tmp_fstype) { + tmp_fstype_escaped = specifier_escape(tmp_fstype); + if (!tmp_fstype_escaped) + return log_oom(); + } + + fprintf(f, + "ExecStartPost=" ROOTLIBEXECDIR "/systemd-makefs '%s' '/dev/mapper/%s'\n", + tmp_fstype_escaped ?: "ext4", name_escaped); + } + + if (swap) + fprintf(f, + "ExecStartPost=" ROOTLIBEXECDIR "/systemd-makefs swap '/dev/mapper/%s'\n", + name_escaped); + + r = fflush_and_check(f); + if (r < 0) + return log_error_errno(r, "Failed to write unit file %s: %m", n); + + 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, NULL, &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_warn(&arg_default_options, value); + + 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] != '=') + return free_and_strdup_warn(&arg_default_keyfile, value); + + 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); -- cgit v1.2.3