#include <fcntl.h>
#include <getopt.h>
+#include <linux/loop.h>
#include <unistd.h>
#include "sd-id128.h"
#include "alloc-util.h"
#include "ask-password-api.h"
#include "copy.h"
+#include "dissect-image.h"
#include "env-file.h"
#include "fd-util.h"
#include "fileio.h"
#include "kbd-util.h"
#include "libcrypt-util.h"
#include "locale-util.h"
+#include "loop-util.h"
#include "main-func.h"
#include "memory-util.h"
#include "mkdir.h"
+#include "mount-util.h"
+#include "namespace-util.h"
#include "os-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "terminal-util.h"
#include "time-util.h"
#include "tmpfile-util-label.h"
+#include "tmpfile-util.h"
#include "umask-util.h"
#include "user-util.h"
static char *arg_root = NULL;
+static char *arg_image = NULL;
static char *arg_locale = NULL; /* $LANG */
static char *arg_keymap = NULL;
static char *arg_locale_messages = NULL; /* $LC_MESSAGES */
static char *arg_hostname = NULL;
static sd_id128_t arg_machine_id = {};
static char *arg_root_password = NULL;
+static char *arg_root_shell = NULL;
static char *arg_kernel_cmdline = NULL;
static bool arg_prompt_locale = false;
static bool arg_prompt_keymap = false;
static bool arg_prompt_timezone = false;
static bool arg_prompt_hostname = false;
static bool arg_prompt_root_password = false;
+static bool arg_prompt_root_shell = false;
static bool arg_copy_locale = false;
static bool arg_copy_keymap = false;
static bool arg_copy_timezone = false;
static bool arg_copy_root_password = false;
+static bool arg_copy_root_shell = false;
static bool arg_force = false;
static bool arg_delete_root_password = false;
static bool arg_root_password_is_hashed = false;
+static bool arg_welcome = true;
STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_image, freep);
STATIC_DESTRUCTOR_REGISTER(arg_locale, freep);
STATIC_DESTRUCTOR_REGISTER(arg_locale_messages, freep);
STATIC_DESTRUCTOR_REGISTER(arg_keymap, freep);
const char *pn;
int r;
+ if (!arg_welcome)
+ return;
+
if (done)
return;
return 0;
}
-static int write_root_passwd(const char *passwd_path, const char *password) {
+static int find_shell(const char *path, const char *root) {
+ int r;
+
+ assert(path);
+
+ if (!valid_shell(path))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "%s is not a valid shell", path);
+
+ r = chase_symlinks(path, root, CHASE_PREFIX_ROOT, NULL, NULL);
+ if (r < 0) {
+ const char *p;
+ p = prefix_roota(root, path);
+ return log_error_errno(r, "Failed to resolve shell %s: %m", p);
+ }
+
+ return 0;
+}
+
+static int prompt_root_shell(void) {
+ int r;
+
+ if (arg_root_shell || !arg_prompt_root_shell)
+ return 0;
+
+ print_welcome();
+ putchar('\n');
+
+ for (;;) {
+ _cleanup_free_ char *s = NULL;
+
+ r = ask_string(&s, "%s Please enter root shell for new system (empty to skip): ", special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET));
+ if (r < 0)
+ return log_error_errno(r, "Failed to query root shell: %m");
+
+ if (isempty(s)) {
+ log_warning("No shell entered, skipping.");
+ break;
+ }
+
+ r = find_shell(s, arg_root);
+ if (r < 0)
+ continue;
+
+ arg_root_shell = TAKE_PTR(s);
+ break;
+ }
+
+ return 0;
+}
+
+static int write_root_passwd(const char *passwd_path, const char *password, const char *shell) {
_cleanup_fclose_ FILE *original = NULL, *passwd = NULL;
_cleanup_(unlink_and_freep) char *passwd_tmp = NULL;
int r;
+ assert(password);
+
r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp);
if (r < 0)
return r;
while ((r = fgetpwent_sane(original, &i)) > 0) {
- if (streq(i->pw_name, "root"))
+ if (streq(i->pw_name, "root")) {
i->pw_passwd = (char *) password;
+ if (shell)
+ i->pw_shell = (char *) shell;
+ }
r = putpwent_sane(i, passwd);
if (r < 0)
.pw_gid = 0,
.pw_gecos = (char *) "Super User",
.pw_dir = (char *) "/root",
- .pw_shell = (char *) "/bin/sh",
+ .pw_shell = (char *) (shell ?: "/bin/sh"),
};
if (errno != ENOENT)
return -errno;
- r = fchmod(fileno(passwd), 0000);
+ r = fchmod(fileno(passwd), 0644);
if (r < 0)
return -errno;
_cleanup_(unlink_and_freep) char *shadow_tmp = NULL;
int r;
+ assert(hashed_password);
+
r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp);
if (r < 0)
return r;
return 0;
}
-static int process_root_password(void) {
+static int process_root_args(void) {
_cleanup_close_ int lock = -1;
struct crypt_data cd = {};
- const char *hashed_password;
- const char *etc_shadow;
+ const char *password, *hashed_password;
+ const char *etc_passwd, *etc_shadow;
int r;
+ etc_passwd = prefix_roota(arg_root, "/etc/passwd");
etc_shadow = prefix_roota(arg_root, "/etc/shadow");
- if (laccess(etc_shadow, F_OK) >= 0 && !arg_force)
+
+ /* We only mess with passwd and shadow if both do not exist or --force is specified. These files are
+ * tightly coupled and hence we make sure we have permission from the user to create/modify both
+ * files. */
+ if ((laccess(etc_passwd, F_OK) >= 0 || laccess(etc_shadow, F_OK) >= 0) && !arg_force)
return 0;
- (void) mkdir_parents(etc_shadow, 0755);
+ (void) mkdir_parents(etc_passwd, 0755);
lock = take_etc_passwd_lock(arg_root);
if (lock < 0)
- return log_error_errno(lock, "Failed to take a lock: %m");
+ return log_error_errno(lock, "Failed to take a lock on %s: %m", etc_passwd);
- if (arg_delete_root_password) {
- const char *etc_passwd;
+ if (arg_copy_root_shell && arg_root) {
+ struct passwd *p;
- /* Mixing alloca() and other stuff that touches the stack in one expression is not portable. */
- etc_passwd = prefix_roota(arg_root, "/etc/passwd");
+ errno = 0;
+ p = getpwnam("root");
+ if (!p)
+ return log_error_errno(errno_or_else(EIO), "Failed to find passwd entry for root: %m");
- r = write_root_passwd(etc_passwd, "");
+ r = free_and_strdup(&arg_root_shell, p->pw_shell);
if (r < 0)
- return log_error_errno(r, "Failed to write %s: %m", etc_passwd);
-
- log_info("%s written", etc_passwd);
-
- return 0;
+ return log_oom();
}
+ r = prompt_root_shell();
+ if (r < 0)
+ return r;
+
if (arg_copy_root_password && arg_root) {
struct spwd *p;
errno = 0;
p = getspnam("root");
- if (p || errno != ENOENT) {
- if (!p) {
- if (!errno)
- errno = EIO;
+ if (!p)
+ return log_error_errno(errno_or_else(EIO), "Failed to find shadow entry for root: %m");
- return log_error_errno(errno, "Failed to find shadow entry for root: %m");
- }
-
- r = write_root_shadow(etc_shadow, p->sp_pwdp);
- if (r < 0)
- return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
+ r = free_and_strdup(&arg_root_password, p->sp_pwdp);
+ if (r < 0)
+ return log_oom();
- log_info("%s copied.", etc_shadow);
- return 0;
- }
+ arg_root_password_is_hashed = true;
}
r = prompt_root_password();
if (r < 0)
return r;
- if (!arg_root_password)
- return 0;
-
- if (arg_root_password_is_hashed)
+ if (arg_root_password && arg_root_password_is_hashed) {
+ password = "x";
hashed_password = arg_root_password;
- else {
+ } else if (arg_root_password) {
_cleanup_free_ char *salt = NULL;
/* hashed_password points inside cd after crypt_r returns so cd has function scope. */
+ password = "x";
+
r = make_salt(&salt);
if (r < 0)
return log_error_errno(r, "Failed to get salt: %m");
if (!hashed_password)
return log_error_errno(errno == 0 ? SYNTHETIC_ERRNO(EINVAL) : errno,
"Failed to encrypt password: %m");
- }
+ } else if (arg_delete_root_password)
+ password = hashed_password = "";
+ else
+ password = hashed_password = "!";
+
+ r = write_root_passwd(etc_passwd, password, arg_root_shell);
+ if (r < 0)
+ return log_error_errno(r, "Failed to write %s: %m", etc_passwd);
+
+ log_info("%s written", etc_passwd);
r = write_root_shadow(etc_shadow, hashed_password);
if (r < 0)
return 0;
}
+static int setup_image(char **ret_mount_dir, LoopDevice **ret_loop_device, DecryptedImage **ret_decrypted_image) {
+ DissectImageFlags f = DISSECT_IMAGE_REQUIRE_ROOT|DISSECT_IMAGE_VALIDATE_OS|DISSECT_IMAGE_RELAX_VAR_CHECK|DISSECT_IMAGE_FSCK;
+ _cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
+ _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL;
+ _cleanup_(dissected_image_unrefp) DissectedImage *dissected_image = NULL;
+ _cleanup_(rmdir_and_freep) char *mount_dir = NULL;
+ _cleanup_free_ char *temp = NULL;
+ int r;
+
+ if (!arg_image) {
+ *ret_mount_dir = NULL;
+ *ret_decrypted_image = NULL;
+ *ret_loop_device = NULL;
+ return 0;
+ }
+
+ assert(!arg_root);
+
+ r = tempfn_random_child(NULL, "firstboot", &temp);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate temporary mount directory: %m");
+
+ r = loop_device_make_by_path(arg_image, O_RDWR, LO_FLAGS_PARTSCAN, &d);
+ if (r < 0)
+ return log_error_errno(r, "Failed to set up loopback device: %m");
+
+ r = dissect_image_and_warn(d->fd, arg_image, NULL, 0, NULL, f, &dissected_image);
+ if (r < 0)
+ return r;
+
+ r = dissected_image_decrypt_interactively(dissected_image, NULL, NULL, 0, NULL, NULL, NULL, 0, f, &decrypted_image);
+ if (r < 0)
+ return r;
+
+ r = detach_mount_namespace();
+ if (r < 0)
+ return log_error_errno(r, "Failed to detach mount namespace: %m");
+
+ mount_dir = strdup(temp);
+ if (!mount_dir)
+ return log_oom();
+
+ r = mkdir_p(mount_dir, 0700);
+ if (r < 0) {
+ mount_dir = mfree(mount_dir);
+ return log_error_errno(r, "Failed to create mount point: %m");
+ }
+
+ r = dissected_image_mount(dissected_image, mount_dir, UID_INVALID, f);
+ if (r < 0)
+ return log_error_errno(r, "Failed to mount image: %m");
+
+ if (decrypted_image) {
+ r = decrypted_image_relinquish(decrypted_image);
+ if (r < 0)
+ return log_error_errno(r, "Failed to relinquish DM devices: %m");
+ }
+
+ loop_device_relinquish(d);
+
+ arg_root = TAKE_PTR(temp);
+
+ *ret_mount_dir = TAKE_PTR(mount_dir);
+ *ret_decrypted_image = TAKE_PTR(decrypted_image);
+ *ret_loop_device = TAKE_PTR(d);
+
+ return 1;
+}
+
static int help(void) {
_cleanup_free_ char *link = NULL;
int r;
" -h --help Show this help\n"
" --version Show package version\n"
" --root=PATH Operate on an alternate filesystem root\n"
+ " --image=PATH Operate on an alternate filesystem image\n"
" --locale=LOCALE Set primary locale (LANG=)\n"
" --locale-messages=LOCALE Set message locale (LC_MESSAGES=)\n"
" --keymap=KEYMAP Set keymap\n"
" --setup-machine-id Generate a new random machine ID\n"
" --force Overwrite existing files\n"
" --delete-root-password Delete root password\n"
+ " --welcome=no Disable the welcome text\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, link
enum {
ARG_VERSION = 0x100,
ARG_ROOT,
+ ARG_IMAGE,
ARG_LOCALE,
ARG_LOCALE_MESSAGES,
ARG_KEYMAP,
ARG_ROOT_PASSWORD,
ARG_ROOT_PASSWORD_FILE,
ARG_ROOT_PASSWORD_HASHED,
+ ARG_ROOT_SHELL,
ARG_KERNEL_COMMAND_LINE,
ARG_PROMPT,
ARG_PROMPT_LOCALE,
ARG_PROMPT_TIMEZONE,
ARG_PROMPT_HOSTNAME,
ARG_PROMPT_ROOT_PASSWORD,
+ ARG_PROMPT_ROOT_SHELL,
ARG_COPY,
ARG_COPY_LOCALE,
ARG_COPY_KEYMAP,
ARG_COPY_TIMEZONE,
ARG_COPY_ROOT_PASSWORD,
+ ARG_COPY_ROOT_SHELL,
ARG_SETUP_MACHINE_ID,
ARG_FORCE,
ARG_DELETE_ROOT_PASSWORD,
+ ARG_WELCOME,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "root", required_argument, NULL, ARG_ROOT },
+ { "image", required_argument, NULL, ARG_IMAGE },
{ "locale", required_argument, NULL, ARG_LOCALE },
{ "locale-messages", required_argument, NULL, ARG_LOCALE_MESSAGES },
{ "keymap", required_argument, NULL, ARG_KEYMAP },
{ "root-password", required_argument, NULL, ARG_ROOT_PASSWORD },
{ "root-password-file", required_argument, NULL, ARG_ROOT_PASSWORD_FILE },
{ "root-password-hashed", required_argument, NULL, ARG_ROOT_PASSWORD_HASHED },
+ { "root-shell", required_argument, NULL, ARG_ROOT_SHELL },
{ "kernel-command-line", required_argument, NULL, ARG_KERNEL_COMMAND_LINE },
{ "prompt", no_argument, NULL, ARG_PROMPT },
{ "prompt-locale", no_argument, NULL, ARG_PROMPT_LOCALE },
{ "prompt-timezone", no_argument, NULL, ARG_PROMPT_TIMEZONE },
{ "prompt-hostname", no_argument, NULL, ARG_PROMPT_HOSTNAME },
{ "prompt-root-password", no_argument, NULL, ARG_PROMPT_ROOT_PASSWORD },
+ { "prompt-root-shell", no_argument, NULL, ARG_PROMPT_ROOT_SHELL },
{ "copy", no_argument, NULL, ARG_COPY },
{ "copy-locale", no_argument, NULL, ARG_COPY_LOCALE },
{ "copy-keymap", no_argument, NULL, ARG_COPY_KEYMAP },
{ "copy-timezone", no_argument, NULL, ARG_COPY_TIMEZONE },
{ "copy-root-password", no_argument, NULL, ARG_COPY_ROOT_PASSWORD },
+ { "copy-root-shell", no_argument, NULL, ARG_COPY_ROOT_SHELL },
{ "setup-machine-id", no_argument, NULL, ARG_SETUP_MACHINE_ID },
{ "force", no_argument, NULL, ARG_FORCE },
{ "delete-root-password", no_argument, NULL, ARG_DELETE_ROOT_PASSWORD },
+ { "welcome", required_argument, NULL, ARG_WELCOME },
{}
};
return r;
break;
+ case ARG_IMAGE:
+ r = parse_path_argument_and_warn(optarg, false, &arg_image);
+ if (r < 0)
+ return r;
+ break;
+
case ARG_LOCALE:
r = free_and_strdup(&arg_locale, optarg);
if (r < 0)
arg_root_password_is_hashed = true;
break;
+ case ARG_ROOT_SHELL:
+ r = find_shell(optarg, arg_root);
+ if (r < 0)
+ return r;
+
+ r = free_and_strdup(&arg_root_shell, optarg);
+ if (r < 0)
+ return log_oom();
+
+ break;
+
case ARG_HOSTNAME:
if (!hostname_is_valid(optarg, true))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
break;
case ARG_PROMPT:
- arg_prompt_locale = arg_prompt_keymap = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = true;
+ arg_prompt_locale = arg_prompt_keymap = arg_prompt_timezone = arg_prompt_hostname =
+ arg_prompt_root_password = arg_prompt_root_shell = true;
break;
case ARG_PROMPT_LOCALE:
arg_prompt_root_password = true;
break;
+ case ARG_PROMPT_ROOT_SHELL:
+ arg_prompt_root_shell = true;
+ break;
+
case ARG_COPY:
- arg_copy_locale = arg_copy_keymap = arg_copy_timezone = arg_copy_root_password = true;
+ arg_copy_locale = arg_copy_keymap = arg_copy_timezone = arg_copy_root_password =
+ arg_copy_root_shell = true;
break;
case ARG_COPY_LOCALE:
arg_copy_root_password = true;
break;
- case ARG_SETUP_MACHINE_ID:
+ case ARG_COPY_ROOT_SHELL:
+ arg_copy_root_shell = true;
+ break;
+ case ARG_SETUP_MACHINE_ID:
r = sd_id128_randomize(&arg_machine_id);
if (r < 0)
return log_error_errno(r, "Failed to generate randomized machine ID: %m");
arg_delete_root_password = true;
break;
+ case ARG_WELCOME:
+ r = parse_boolean(optarg);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse --welcome= argument: %s", optarg);
+
+ arg_welcome = r;
+ break;
+
case '?':
return -EINVAL;
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"--delete-root-password cannot be combined with other root password options");
+ if (arg_image && arg_root)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported.");
+
return 1;
}
static int run(int argc, char *argv[]) {
- bool enabled;
+ _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL;
+ _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL;
+ _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL;
int r;
r = parse_argv(argc, argv);
umask(0022);
- r = proc_cmdline_get_bool("systemd.firstboot", &enabled);
+ if (!arg_root && !arg_image) {
+ bool enabled;
+
+ /* If we are called without --root=/--image= let's honour the systemd.firstboot kernel
+ * command line option, because we are called to provision the host with basic settings (as
+ * opposed to some other file system tree/image) */
+
+ r = proc_cmdline_get_bool("systemd.firstboot", &enabled);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse systemd.firstboot= kernel command line argument, ignoring: %m");
+ if (r > 0 && !enabled)
+ return 0; /* disabled */
+ }
+
+ r = setup_image(&unlink_dir, &loop_device, &decrypted_image);
if (r < 0)
- return log_error_errno(r, "Failed to parse systemd.firstboot= kernel command line argument, ignoring: %m");
- if (r > 0 && !enabled)
- return 0; /* disabled */
+ return r;
r = process_locale();
if (r < 0)
if (r < 0)
return r;
- r = process_root_password();
+ r = process_root_args();
if (r < 0)
return r;
projects / thirdparty / systemd.git / blobdiff