844 lines
27 KiB
C
844 lines
27 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <stdlib.h>
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#include <unistd.h>
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#include "sd-device.h"
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#include "sd-id128.h"
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#include "alloc-util.h"
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#include "blkid-util.h"
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#include "blockdev-util.h"
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#include "btrfs-util.h"
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#include "device-util.h"
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#include "dirent-util.h"
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#include "dissect-image.h"
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#include "dropin.h"
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#include "efi-loader.h"
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#include "fd-util.h"
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#include "fileio.h"
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#include "fs-util.h"
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#include "fstab-util.h"
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#include "generator.h"
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#include "gpt.h"
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#include "mkdir.h"
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#include "mountpoint-util.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 "special.h"
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#include "specifier.h"
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#include "stat-util.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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#include "virt.h"
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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_root_enabled = true;
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static int arg_root_rw = -1;
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static int open_parent_block_device(dev_t devnum, int *ret_fd) {
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_cleanup_(sd_device_unrefp) sd_device *d = NULL;
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const char *name, *devtype, *node;
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sd_device *parent;
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dev_t pn;
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int fd, r;
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assert(ret_fd);
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r = sd_device_new_from_devnum(&d, 'b', devnum);
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if (r < 0)
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return log_debug_errno(r, "Failed to open device: %m");
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if (sd_device_get_devname(d, &name) < 0) {
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r = sd_device_get_syspath(d, &name);
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if (r < 0) {
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log_device_debug_errno(d, r, "Device %u:%u does not have a name, ignoring: %m",
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major(devnum), minor(devnum));
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return 0;
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}
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}
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r = sd_device_get_parent(d, &parent);
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if (r < 0) {
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log_device_debug_errno(d, r, "Not a partitioned device, ignoring: %m");
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return 0;
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}
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/* Does it have a devtype? */
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r = sd_device_get_devtype(parent, &devtype);
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if (r < 0) {
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log_device_debug_errno(parent, r, "Parent doesn't have a device type, ignoring: %m");
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return 0;
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}
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/* Is this a disk or a partition? We only care for disks... */
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if (!streq(devtype, "disk")) {
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log_device_debug(parent, "Parent isn't a raw disk, ignoring.");
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return 0;
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}
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/* Does it have a device node? */
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r = sd_device_get_devname(parent, &node);
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if (r < 0) {
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log_device_debug_errno(parent, r, "Parent device does not have device node, ignoring: %m");
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return 0;
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}
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log_device_debug(d, "Root device %s.", node);
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r = sd_device_get_devnum(parent, &pn);
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if (r < 0) {
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log_device_debug_errno(parent, r, "Parent device is not a proper block device, ignoring: %m");
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return 0;
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}
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fd = open(node, O_RDONLY|O_CLOEXEC|O_NOCTTY);
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if (fd < 0)
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return log_error_errno(errno, "Failed to open %s: %m", node);
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*ret_fd = fd;
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return 1;
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}
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static int add_cryptsetup(const char *id, const char *what, bool rw, bool require, char **device) {
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_cleanup_free_ char *e = NULL, *n = NULL, *d = NULL;
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_cleanup_fclose_ FILE *f = NULL;
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int r;
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assert(id);
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assert(what);
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r = unit_name_from_path(what, ".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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e = unit_name_escape(id);
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if (!e)
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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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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, NULL);
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if (r < 0)
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return r;
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fprintf(f,
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"Before=umount.target cryptsetup.target\n"
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"Conflicts=umount.target\n"
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"BindsTo=%s\n"
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"After=%s\n",
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d, d);
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r = generator_write_cryptsetup_service_section(f, id, what, NULL, rw ? NULL : "read-only");
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if (r < 0)
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return r;
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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 file %s: %m", n);
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r = generator_add_symlink(arg_dest, d, "wants", n);
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if (r < 0)
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return r;
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const char *dmname;
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dmname = strjoina("dev-mapper-", e, ".device");
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if (require) {
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r = generator_add_symlink(arg_dest, "cryptsetup.target", "requires", n);
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if (r < 0)
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return r;
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r = generator_add_symlink(arg_dest, dmname, "requires", n);
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if (r < 0)
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return r;
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}
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r = write_drop_in_format(arg_dest, dmname, 50, "job-timeout",
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"# Automatically generated by systemd-gpt-auto-generator\n\n"
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"[Unit]\n"
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"JobTimeoutSec=0"); /* the binary handles timeouts anyway */
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if (r < 0)
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log_warning_errno(r, "Failed to write device timeout drop-in, ignoring: %m");
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if (device) {
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char *ret;
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ret = path_join("/dev/mapper", id);
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if (!ret)
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return log_oom();
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*device = ret;
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}
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return 0;
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}
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static int add_mount(
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const char *id,
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const char *what,
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const char *where,
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const char *fstype,
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bool rw,
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const char *options,
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const char *description,
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const char *post) {
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_cleanup_free_ char *unit = NULL, *crypto_what = NULL, *p = NULL;
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_cleanup_fclose_ FILE *f = NULL;
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int r;
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/* Note that we don't apply specifier escaping on the input strings here, since we know they are not configured
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* externally, but all originate from our own sources here, and hence we know they contain no % characters that
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* could potentially be understood as specifiers. */
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assert(id);
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assert(what);
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assert(where);
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assert(description);
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log_debug("Adding %s: %s fstype=%s", where, what, fstype ?: "(any)");
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if (streq_ptr(fstype, "crypto_LUKS")) {
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r = add_cryptsetup(id, what, rw, true, &crypto_what);
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if (r < 0)
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return r;
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what = crypto_what;
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fstype = NULL;
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}
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r = unit_name_from_path(where, ".mount", &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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p = path_join(empty_to_root(arg_dest), unit);
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if (!p)
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return log_oom();
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f = fopen(p, "wxe");
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if (!f)
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return log_error_errno(errno, "Failed to create unit file %s: %m", unit);
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fprintf(f,
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"# Automatically generated by systemd-gpt-auto-generator\n\n"
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"[Unit]\n"
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"Description=%s\n"
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"Documentation=man:systemd-gpt-auto-generator(8)\n",
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description);
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if (post)
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fprintf(f, "Before=%s\n", post);
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r = generator_write_fsck_deps(f, arg_dest, what, where, fstype);
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if (r < 0)
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return r;
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r = generator_write_blockdev_dependency(f, what);
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if (r < 0)
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return r;
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fprintf(f,
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"\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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what, where);
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if (fstype)
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fprintf(f, "Type=%s\n", fstype);
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if (options)
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fprintf(f, "Options=%s,%s\n", options, rw ? "rw" : "ro");
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else
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fprintf(f, "Options=%s\n", rw ? "rw" : "ro");
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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", p);
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if (post)
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return generator_add_symlink(arg_dest, post, "requires", unit);
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return 0;
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}
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static int path_is_busy(const char *where) {
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int r;
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/* already a mountpoint; generators run during reload */
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r = path_is_mount_point(where, NULL, AT_SYMLINK_FOLLOW);
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if (r > 0)
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return false;
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/* the directory might not exist on a stateless system */
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if (r == -ENOENT)
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return false;
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if (r < 0)
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return log_warning_errno(r, "Cannot check if \"%s\" is a mount point: %m", where);
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/* not a mountpoint but it contains files */
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r = dir_is_empty(where);
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if (r < 0)
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return log_warning_errno(r, "Cannot check if \"%s\" is empty: %m", where);
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if (r > 0)
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return false;
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log_debug("\"%s\" already populated, ignoring.", where);
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return true;
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}
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static int add_partition_mount(
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DissectedPartition *p,
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const char *id,
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const char *where,
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const char *description) {
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int r;
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assert(p);
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r = path_is_busy(where);
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if (r != 0)
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return r < 0 ? r : 0;
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return add_mount(
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id,
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p->node,
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where,
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p->fstype,
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p->rw,
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NULL,
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description,
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SPECIAL_LOCAL_FS_TARGET);
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}
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static int add_swap(const char *path) {
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_cleanup_free_ char *name = NULL, *unit = NULL;
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_cleanup_fclose_ FILE *f = NULL;
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int r;
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assert(path);
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/* Disable the swap auto logic if at least one swap is defined in /etc/fstab, see #6192. */
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r = fstab_has_fstype("swap");
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if (r < 0)
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return log_error_errno(r, "Failed to parse fstab: %m");
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if (r > 0) {
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log_debug("swap specified in fstab, ignoring.");
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return 0;
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}
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log_debug("Adding swap: %s", path);
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r = unit_name_from_path(path, ".swap", &name);
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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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unit = path_join(empty_to_root(arg_dest), name);
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if (!unit)
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return log_oom();
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f = fopen(unit, "wxe");
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if (!f)
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return log_error_errno(errno, "Failed to create unit file %s: %m", unit);
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fprintf(f,
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"# Automatically generated by systemd-gpt-auto-generator\n\n"
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"[Unit]\n"
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"Description=Swap Partition\n"
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"Documentation=man:systemd-gpt-auto-generator(8)\n");
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r = generator_write_blockdev_dependency(f, path);
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if (r < 0)
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return r;
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fprintf(f,
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"\n"
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"[Swap]\n"
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"What=%s\n",
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path);
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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", unit);
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return generator_add_symlink(arg_dest, SPECIAL_SWAP_TARGET, "wants", name);
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}
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static int add_automount(
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const char *id,
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const char *what,
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const char *where,
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const char *fstype,
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bool rw,
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const char *options,
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const char *description,
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usec_t timeout) {
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_cleanup_free_ char *unit = NULL;
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_cleanup_fclose_ FILE *f = NULL;
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const char *opt = "noauto", *p;
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int r;
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assert(id);
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assert(where);
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assert(description);
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if (options)
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opt = strjoina(options, ",", opt);
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r = add_mount(id,
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what,
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where,
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fstype,
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rw,
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opt,
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description,
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NULL);
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if (r < 0)
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return r;
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r = unit_name_from_path(where, ".automount", &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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p = prefix_roota(arg_dest, unit);
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f = fopen(p, "wxe");
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if (!f)
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return log_error_errno(errno, "Failed to create unit file %s: %m", unit);
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fprintf(f,
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"# Automatically generated by systemd-gpt-auto-generator\n\n"
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"[Unit]\n"
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"Description=%s\n"
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"Documentation=man:systemd-gpt-auto-generator(8)\n"
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"[Automount]\n"
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"Where=%s\n"
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"TimeoutIdleSec="USEC_FMT"\n",
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description,
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where,
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timeout / USEC_PER_SEC);
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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", p);
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return generator_add_symlink(arg_dest, SPECIAL_LOCAL_FS_TARGET, "wants", unit);
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}
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static const char *esp_or_xbootldr_options(const DissectedPartition *p) {
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assert(p);
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/* if we probed vfat or have no idea about the file system then assume these file systems are vfat
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* and thus understand "umask=0077". If we detected something else then don't specify any options and
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* use kernel defaults. */
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if (!p->fstype || streq(p->fstype, "vfat"))
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return "umask=0077";
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return NULL;
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}
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static int add_xbootldr(DissectedPartition *p) {
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int r;
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assert(p);
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if (in_initrd()) {
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log_debug("In initrd, ignoring the XBOOTLDR partition.");
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return 0;
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}
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r = fstab_is_mount_point("/boot");
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if (r < 0)
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return log_error_errno(r, "Failed to parse fstab: %m");
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if (r > 0) {
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log_debug("/boot specified in fstab, ignoring XBOOTLDR partition.");
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return 0;
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}
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r = path_is_busy("/boot");
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if (r < 0)
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return r;
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if (r > 0)
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return 0;
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return add_automount("boot",
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p->node,
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"/boot",
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p->fstype,
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true,
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esp_or_xbootldr_options(p),
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"Boot Loader Partition",
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120 * USEC_PER_SEC);
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}
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#if ENABLE_EFI
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static int add_esp(DissectedPartition *p, bool has_xbootldr) {
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const char *esp_path = NULL, *id = NULL;
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int r;
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assert(p);
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if (in_initrd()) {
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log_debug("In initrd, ignoring the ESP.");
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return 0;
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}
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/* If /efi exists we'll use that. Otherwise we'll use /boot, as that's usually the better choice, but
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* only if there's no explicit XBOOTLDR partition around. */
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if (access("/efi", F_OK) < 0) {
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if (errno != ENOENT)
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return log_error_errno(errno, "Failed to determine whether /efi exists: %m");
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/* Use /boot as fallback, but only if there's no XBOOTLDR partition */
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if (!has_xbootldr) {
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esp_path = "/boot";
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id = "boot";
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}
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}
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if (!esp_path)
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esp_path = "/efi";
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if (!id)
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id = "efi";
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/* We create an .automount which is not overridden by the .mount from the fstab generator. */
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r = fstab_is_mount_point(esp_path);
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if (r < 0)
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return log_error_errno(r, "Failed to parse fstab: %m");
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if (r > 0) {
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log_debug("%s specified in fstab, ignoring.", esp_path);
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return 0;
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}
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r = path_is_busy(esp_path);
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if (r < 0)
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return r;
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if (r > 0)
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return 0;
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|
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if (is_efi_boot()) {
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sd_id128_t loader_uuid;
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|
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/* If this is an EFI boot, be extra careful, and only mount the ESP if it was the ESP used for booting. */
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r = efi_loader_get_device_part_uuid(&loader_uuid);
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if (r == -ENOENT) {
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log_debug("EFI loader partition unknown.");
|
|
return 0;
|
|
}
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to read ESP partition UUID: %m");
|
|
|
|
if (!sd_id128_equal(p->uuid, loader_uuid)) {
|
|
log_debug("Partition for %s does not appear to be the partition we are booted from.", p->node);
|
|
return 0;
|
|
}
|
|
} else
|
|
log_debug("Not an EFI boot, skipping ESP check.");
|
|
|
|
return add_automount(id,
|
|
p->node,
|
|
esp_path,
|
|
p->fstype,
|
|
true,
|
|
esp_or_xbootldr_options(p),
|
|
"EFI System Partition Automount",
|
|
120 * USEC_PER_SEC);
|
|
}
|
|
#else
|
|
static int add_esp(DissectedPartition *p, bool has_xbootldr) {
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int add_root_rw(DissectedPartition *p) {
|
|
const char *path;
|
|
int r;
|
|
|
|
assert(p);
|
|
|
|
if (in_initrd()) {
|
|
log_debug("In initrd, not generating drop-in for systemd-remount-fs.service.");
|
|
return 0;
|
|
}
|
|
|
|
if (arg_root_rw >= 0) {
|
|
log_debug("Parameter ro/rw specified on kernel command line, not generating drop-in for systemd-remount-fs.service.");
|
|
return 0;
|
|
}
|
|
|
|
if (!p->rw) {
|
|
log_debug("Root partition marked read-only in GPT partition table, not generating drop-in for systemd-remount-fs.service.");
|
|
return 0;
|
|
}
|
|
|
|
(void) generator_enable_remount_fs_service(arg_dest);
|
|
|
|
path = strjoina(arg_dest, "/systemd-remount-fs.service.d/50-remount-rw.conf");
|
|
|
|
r = write_string_file(path,
|
|
"# Automatically generated by systemd-gpt-generator\n\n"
|
|
"[Service]\n"
|
|
"Environment=SYSTEMD_REMOUNT_ROOT_RW=1\n",
|
|
WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_NOFOLLOW|WRITE_STRING_FILE_MKDIR_0755);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to write drop-in file %s: %m", path);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if ENABLE_EFI
|
|
static int add_root_cryptsetup(void) {
|
|
|
|
/* If a device /dev/gpt-auto-root-luks appears, then make it pull in systemd-cryptsetup-root.service, which
|
|
* sets it up, and causes /dev/gpt-auto-root to appear which is all we are looking for. */
|
|
|
|
return add_cryptsetup("root", "/dev/gpt-auto-root-luks", true, false, NULL);
|
|
}
|
|
#endif
|
|
|
|
static int add_root_mount(void) {
|
|
#if ENABLE_EFI
|
|
int r;
|
|
|
|
if (!is_efi_boot()) {
|
|
log_debug("Not a EFI boot, not creating root mount.");
|
|
return 0;
|
|
}
|
|
|
|
r = efi_loader_get_device_part_uuid(NULL);
|
|
if (r == -ENOENT) {
|
|
log_notice("EFI loader partition unknown, exiting.\n"
|
|
"(The boot loader did not set EFI variable LoaderDevicePartUUID.)");
|
|
return 0;
|
|
} else if (r < 0)
|
|
return log_error_errno(r, "Failed to read ESP partition UUID: %m");
|
|
|
|
/* OK, we have an ESP partition, this is fantastic, so let's
|
|
* wait for a root device to show up. A udev rule will create
|
|
* the link for us under the right name. */
|
|
|
|
if (in_initrd()) {
|
|
r = generator_write_initrd_root_device_deps(arg_dest, "/dev/gpt-auto-root");
|
|
if (r < 0)
|
|
return 0;
|
|
|
|
r = add_root_cryptsetup();
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
/* Note that we do not need to enable systemd-remount-fs.service here. If
|
|
* /etc/fstab exists, systemd-fstab-generator will pull it in for us. */
|
|
|
|
return add_mount(
|
|
"root",
|
|
"/dev/gpt-auto-root",
|
|
in_initrd() ? "/sysroot" : "/",
|
|
NULL,
|
|
arg_root_rw > 0,
|
|
NULL,
|
|
"Root Partition",
|
|
in_initrd() ? SPECIAL_INITRD_ROOT_FS_TARGET : SPECIAL_LOCAL_FS_TARGET);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
static int enumerate_partitions(dev_t devnum) {
|
|
_cleanup_close_ int fd = -1;
|
|
_cleanup_(dissected_image_unrefp) DissectedImage *m = NULL;
|
|
int r, k;
|
|
|
|
r = open_parent_block_device(devnum, &fd);
|
|
if (r <= 0)
|
|
return r;
|
|
|
|
r = dissect_image(fd, NULL, NULL, DISSECT_IMAGE_GPT_ONLY|DISSECT_IMAGE_NO_UDEV, &m);
|
|
if (r == -ENOPKG) {
|
|
log_debug_errno(r, "No suitable partition table found, ignoring.");
|
|
return 0;
|
|
}
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to dissect: %m");
|
|
|
|
if (m->partitions[PARTITION_SWAP].found) {
|
|
k = add_swap(m->partitions[PARTITION_SWAP].node);
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (m->partitions[PARTITION_XBOOTLDR].found) {
|
|
k = add_xbootldr(m->partitions + PARTITION_XBOOTLDR);
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (m->partitions[PARTITION_ESP].found) {
|
|
k = add_esp(m->partitions + PARTITION_ESP, m->partitions[PARTITION_XBOOTLDR].found);
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (m->partitions[PARTITION_HOME].found) {
|
|
k = add_partition_mount(m->partitions + PARTITION_HOME, "home", "/home", "Home Partition");
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (m->partitions[PARTITION_SRV].found) {
|
|
k = add_partition_mount(m->partitions + PARTITION_SRV, "srv", "/srv", "Server Data Partition");
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (m->partitions[PARTITION_VAR].found) {
|
|
k = add_partition_mount(m->partitions + PARTITION_VAR, "var", "/var", "Variable Data Partition");
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (m->partitions[PARTITION_TMP].found) {
|
|
k = add_partition_mount(m->partitions + PARTITION_TMP, "var-tmp", "/var/tmp", "Temporary Data Partition");
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (m->partitions[PARTITION_ROOT].found) {
|
|
k = add_root_rw(m->partitions + PARTITION_ROOT);
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static int add_mounts(void) {
|
|
dev_t devno;
|
|
int r;
|
|
|
|
r = get_block_device_harder("/", &devno);
|
|
if (r == -EUCLEAN)
|
|
return btrfs_log_dev_root(LOG_ERR, r, "root file system");
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to determine block device of root file system: %m");
|
|
if (r == 0) { /* Not backed by block device */
|
|
r = get_block_device_harder("/usr", &devno);
|
|
if (r == -EUCLEAN)
|
|
return btrfs_log_dev_root(LOG_ERR, r, "/usr");
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to determine block device of /usr file system: %m");
|
|
if (r == 0) {
|
|
_cleanup_free_ char *p = NULL;
|
|
mode_t m;
|
|
|
|
/* If the root mount has been replaced by some form of volatile file system (overlayfs), the
|
|
* original root block device node is symlinked in /run/systemd/volatile-root. Let's read that
|
|
* here. */
|
|
r = readlink_malloc("/run/systemd/volatile-root", &p);
|
|
if (r == -ENOENT) {
|
|
log_debug("Neither root nor /usr file system are on a (single) block device.");
|
|
return 0;
|
|
}
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m");
|
|
|
|
r = device_path_parse_major_minor(p, &m, &devno);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse major/minor device node: %m");
|
|
if (!S_ISBLK(m))
|
|
return log_error_errno(SYNTHETIC_ERRNO(ENOTBLK), "Volatile root device is of wrong type.");
|
|
}
|
|
}
|
|
|
|
return enumerate_partitions(devno);
|
|
}
|
|
|
|
static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
|
|
int r;
|
|
|
|
assert(key);
|
|
|
|
if (proc_cmdline_key_streq(key, "systemd.gpt_auto") ||
|
|
proc_cmdline_key_streq(key, "rd.systemd.gpt_auto")) {
|
|
|
|
r = value ? parse_boolean(value) : 1;
|
|
if (r < 0)
|
|
log_warning_errno(r, "Failed to parse gpt-auto switch \"%s\", ignoring: %m", value);
|
|
else
|
|
arg_enabled = r;
|
|
|
|
} else if (proc_cmdline_key_streq(key, "root")) {
|
|
|
|
if (proc_cmdline_value_missing(key, value))
|
|
return 0;
|
|
|
|
/* Disable root disk logic if there's a root= value
|
|
* specified (unless it happens to be "gpt-auto") */
|
|
|
|
if (!streq(value, "gpt-auto")) {
|
|
arg_root_enabled = false;
|
|
log_debug("Disabling root partition auto-detection, root= is defined.");
|
|
}
|
|
|
|
} else if (proc_cmdline_key_streq(key, "roothash")) {
|
|
|
|
if (proc_cmdline_value_missing(key, value))
|
|
return 0;
|
|
|
|
/* Disable root disk logic if there's roothash= defined (i.e. verity enabled) */
|
|
|
|
arg_root_enabled = false;
|
|
|
|
} else if (proc_cmdline_key_streq(key, "rw") && !value)
|
|
arg_root_rw = true;
|
|
else if (proc_cmdline_key_streq(key, "ro") && !value)
|
|
arg_root_rw = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int run(const char *dest, const char *dest_early, const char *dest_late) {
|
|
int r, k;
|
|
|
|
assert_se(arg_dest = dest_late);
|
|
|
|
if (detect_container() > 0) {
|
|
log_debug("In a container, exiting.");
|
|
return 0;
|
|
}
|
|
|
|
r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
|
|
if (r < 0)
|
|
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
|
|
|
|
if (!arg_enabled) {
|
|
log_debug("Disabled, exiting.");
|
|
return 0;
|
|
}
|
|
|
|
if (arg_root_enabled)
|
|
r = add_root_mount();
|
|
|
|
if (!in_initrd()) {
|
|
k = add_mounts();
|
|
if (r >= 0)
|
|
r = k;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
DEFINE_MAIN_GENERATOR_FUNCTION(run);
|