[thirdparty/systemd.git] / src / import / import.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <getopt.h>
#include <locale.h>
#include <unistd.h>

#include "sd-event.h"

#include "alloc-util.h"
#include "ansi-color.h"
#include "build.h"
#include "discover-image.h"
#include "env-util.h"
#include "fd-util.h"
#include "import-raw.h"
#include "import-tar.h"
#include "import-util.h"
#include "io-util.h"
#include "log.h"
#include "main-func.h"
#include "parse-argument.h"
#include "parse-util.h"
#include "path-util.h"
#include "runtime-scope.h"
#include "signal-util.h"
#include "string-util.h"
#include "verbs.h"

static const char *arg_image_root = NULL;
static ImportFlags arg_import_flags = IMPORT_BTRFS_SUBVOL | IMPORT_BTRFS_QUOTA | IMPORT_CONVERT_QCOW2 | IMPORT_SYNC;
static uint64_t arg_offset = UINT64_MAX, arg_size_max = UINT64_MAX;
static ImageClass arg_class = IMAGE_MACHINE;
static RuntimeScope arg_runtime_scope = _RUNTIME_SCOPE_INVALID;

static int normalize_local(const char *local, char **ret) {
        _cleanup_free_ char *ll = NULL;
        int r;

        assert(ret);

        if (arg_import_flags & IMPORT_DIRECT) {

                if (!local)
                        return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No local path specified.");

                if (!path_is_absolute(local))  {
                        ll = path_join(arg_image_root, local);
                        if (!ll)
                                return log_oom();

                        local = ll;
                }

                if (!path_is_valid(local))
                        return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                               "Local path name '%s' is not valid.", local);
        } else {
                if (local) {
                        if (!image_name_is_valid(local))
                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                                       "Local image name '%s' is not valid.",
                                                       local);
                } else
                        local = "imported";

                if (!FLAGS_SET(arg_import_flags, IMPORT_FORCE)) {
                        r = image_find(arg_runtime_scope, arg_class, local, NULL, NULL);
                        if (r < 0) {
                                if (r != -ENOENT)
                                        return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local);
                        } else
                                return log_error_errno(SYNTHETIC_ERRNO(EEXIST),
                                                       "Image '%s' already exists.",
                                                       local);
                }
        }

        if (!ll) {
                ll = strdup(local);
                if (!ll)
                        return log_oom();
        }

        *ret = TAKE_PTR(ll);
        return 0;
}

static int open_source(const char *path, const char *local, int *ret_open_fd) {
        _cleanup_close_ int open_fd = -EBADF;
        int retval;

        assert(local);
        assert(ret_open_fd);

        if (path) {
                open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY);
                if (open_fd < 0)
                        return log_error_errno(errno, "Failed to open source file '%s': %m", path);

                retval = open_fd;

                if (arg_offset != UINT64_MAX)
                        log_info("Importing '%s', saving at offset %" PRIu64 " in '%s'.", path, arg_offset, local);
                else
                        log_info("Importing '%s', saving as '%s'.", path, local);
        } else {
                _cleanup_free_ char *pretty = NULL;

                retval = STDIN_FILENO;

                (void) fd_get_path(STDIN_FILENO, &pretty);

                if (arg_offset != UINT64_MAX)
                        log_info("Importing '%s', saving at offset %" PRIu64 " in '%s'.", strempty(pretty), arg_offset, local);
                else
                        log_info("Importing '%s', saving as '%s'.", strempty(pretty), local);
        }

        if (!FLAGS_SET(arg_import_flags, IMPORT_DIRECT))
                log_info("Operating on image directory '%s'.", arg_image_root);

        if (!FLAGS_SET(arg_import_flags, IMPORT_SYNC))
                log_info("File system synchronization on completion is off.");

        *ret_open_fd = TAKE_FD(open_fd);
        return retval;
}

static void on_tar_finished(TarImport *import, int error, void *userdata) {
        sd_event *event = userdata;
        assert(import);

        if (error == 0)
                log_info("Operation completed successfully.");

        sd_event_exit(event, ABS(error));
}

static int import_tar(int argc, char *argv[], void *userdata) {
        _cleanup_(tar_import_unrefp) TarImport *import = NULL;
        _cleanup_free_ char *ll = NULL, *normalized = NULL;
        _cleanup_(sd_event_unrefp) sd_event *event = NULL;
        const char *path = NULL, *local = NULL;
        _cleanup_close_ int open_fd = -EBADF;
        int r, fd;

        if (argc >= 2)
                path = empty_or_dash_to_null(argv[1]);

        if (argc >= 3)
                local = empty_or_dash_to_null(argv[2]);
        else if (path) {
                _cleanup_free_ char *l = NULL;

                r = path_extract_filename(path, &l);
                if (r < 0)
                        return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);

                r = tar_strip_suffixes(l, &ll);
                if (r < 0)
                        return log_oom();

                local = ll;
        }

        r = normalize_local(local, &normalized);
        if (r < 0)
                return r;

        fd = open_source(path, normalized, &open_fd);
        if (fd < 0)
                return fd;

        r = import_allocate_event_with_signals(&event);
        if (r < 0)
                return r;

        r = tar_import_new(&import, event, arg_image_root, on_tar_finished, event);
        if (r < 0)
                return log_error_errno(r, "Failed to allocate importer: %m");

        r = tar_import_start(
                        import,
                        fd,
                        normalized,
                        arg_import_flags & IMPORT_FLAGS_MASK_TAR);
        if (r < 0)
                return log_error_errno(r, "Failed to import image: %m");

        r = sd_event_loop(event);
        if (r < 0)
                return log_error_errno(r, "Failed to run event loop: %m");

        log_info("Exiting.");
        return -r;
}

static void on_raw_finished(RawImport *import, int error, void *userdata) {
        sd_event *event = userdata;
        assert(import);

        if (error == 0)
                log_info("Operation completed successfully.");

        sd_event_exit(event, ABS(error));
}

static int import_raw(int argc, char *argv[], void *userdata) {
        _cleanup_(raw_import_unrefp) RawImport *import = NULL;
        _cleanup_free_ char *ll = NULL, *normalized = NULL;
        _cleanup_(sd_event_unrefp) sd_event *event = NULL;
        const char *path = NULL, *local = NULL;
        _cleanup_close_ int open_fd = -EBADF;
        int r, fd;

        if (argc >= 2)
                path = empty_or_dash_to_null(argv[1]);

        if (argc >= 3)
                local = empty_or_dash_to_null(argv[2]);
        else if (path) {
                _cleanup_free_ char *l = NULL;

                r = path_extract_filename(path, &l);
                if (r < 0)
                        return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);

                r = raw_strip_suffixes(l, &ll);
                if (r < 0)
                        return log_oom();

                local = ll;
        }

        r = normalize_local(local, &normalized);
        if (r < 0)
                return r;

        fd = open_source(path, normalized, &open_fd);
        if (fd < 0)
                return fd;

        r = import_allocate_event_with_signals(&event);
        if (r < 0)
                return r;

        r = raw_import_new(&import, event, arg_image_root, on_raw_finished, event);
        if (r < 0)
                return log_error_errno(r, "Failed to allocate importer: %m");

        r = raw_import_start(
                        import,
                        fd,
                        normalized,
                        arg_offset,
                        arg_size_max,
                        arg_import_flags & IMPORT_FLAGS_MASK_RAW);
        if (r < 0)
                return log_error_errno(r, "Failed to import image: %m");

        r = sd_event_loop(event);
        if (r < 0)
                return log_error_errno(r, "Failed to run event loop: %m");

        log_info("Exiting.");
        return -r;
}

static int help(int argc, char *argv[], void *userdata) {

        printf("%1$s [OPTIONS...] {COMMAND} ...\n"
               "\n%4$sImport disk images.%5$s\n"
               "\n%2$sCommands:%3$s\n"
               "  tar FILE [NAME]             Import a TAR image\n"
               "  raw FILE [NAME]             Import a RAW image\n"
               "\n%2$sOptions:%3$s\n"
               "  -h --help                   Show this help\n"
               "     --version                Show package version\n"
               "     --force                  Force creation of image\n"
               "     --image-root=PATH        Image root directory\n"
               "     --read-only              Create a read-only image\n"
               "     --direct                 Import directly to specified file\n"
               "     --btrfs-subvol=BOOL      Controls whether to create a btrfs subvolume\n"
               "                              instead of a directory\n"
               "     --btrfs-quota=BOOL       Controls whether to set up quota for btrfs\n"
               "                              subvolume\n"
               "     --convert-qcow2=BOOL     Controls whether to convert QCOW2 images to\n"
               "                              regular disk images\n"
               "     --sync=BOOL              Controls whether to sync() before completing\n"
               "     --offset=BYTES           Offset to seek to in destination\n"
               "     --size-max=BYTES         Maximum number of bytes to write to destination\n"
               "     --class=CLASS            Select image class (machine, sysext, confext,\n"
               "                              portable)\n",
               program_invocation_short_name,
               ansi_underline(),
               ansi_normal(),
               ansi_highlight(),
               ansi_normal());

        return 0;
}

static int parse_argv(int argc, char *argv[]) {

        enum {
                ARG_VERSION = 0x100,
                ARG_FORCE,
                ARG_IMAGE_ROOT,
                ARG_READ_ONLY,
                ARG_DIRECT,
                ARG_BTRFS_SUBVOL,
                ARG_BTRFS_QUOTA,
                ARG_CONVERT_QCOW2,
                ARG_SYNC,
                ARG_OFFSET,
                ARG_SIZE_MAX,
                ARG_CLASS,
        };

        static const struct option options[] = {
                { "help",            no_argument,       NULL, 'h'                 },
                { "version",         no_argument,       NULL, ARG_VERSION         },
                { "force",           no_argument,       NULL, ARG_FORCE           },
                { "image-root",      required_argument, NULL, ARG_IMAGE_ROOT      },
                { "read-only",       no_argument,       NULL, ARG_READ_ONLY       },
                { "direct",          no_argument,       NULL, ARG_DIRECT          },
                { "btrfs-subvol",    required_argument, NULL, ARG_BTRFS_SUBVOL    },
                { "btrfs-quota",     required_argument, NULL, ARG_BTRFS_QUOTA     },
                { "convert-qcow2",   required_argument, NULL, ARG_CONVERT_QCOW2   },
                { "sync",            required_argument, NULL, ARG_SYNC            },
                { "offset",          required_argument, NULL, ARG_OFFSET          },
                { "size-max",        required_argument, NULL, ARG_SIZE_MAX        },
                { "class",           required_argument, NULL, ARG_CLASS           },
                {}
        };

        int r, c;

        assert(argc >= 0);
        assert(argv);

        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)

                switch (c) {

                case 'h':
                        return help(0, NULL, NULL);

                case ARG_VERSION:
                        return version();

                case ARG_FORCE:
                        arg_import_flags |= IMPORT_FORCE;
                        break;

                case ARG_IMAGE_ROOT:
                        arg_image_root = optarg;
                        break;

                case ARG_READ_ONLY:
                        arg_import_flags |= IMPORT_READ_ONLY;
                        break;

                case ARG_DIRECT:
                        arg_import_flags |= IMPORT_DIRECT;
                        break;

                case ARG_BTRFS_SUBVOL:
                        r = parse_boolean_argument("--btrfs-subvol=", optarg, NULL);
                        if (r < 0)
                                return r;

                        SET_FLAG(arg_import_flags, IMPORT_BTRFS_SUBVOL, r);
                        break;

                case ARG_BTRFS_QUOTA:
                        r = parse_boolean_argument("--btrfs-quota=", optarg, NULL);
                        if (r < 0)
                                return r;

                        SET_FLAG(arg_import_flags, IMPORT_BTRFS_QUOTA, r);
                        break;

                case ARG_CONVERT_QCOW2:
                        r = parse_boolean_argument("--convert-qcow2=", optarg, NULL);
                        if (r < 0)
                                return r;

                        SET_FLAG(arg_import_flags, IMPORT_CONVERT_QCOW2, r);
                        break;

                case ARG_SYNC:
                        r = parse_boolean_argument("--sync=", optarg, NULL);
                        if (r < 0)
                                return r;

                        SET_FLAG(arg_import_flags, IMPORT_SYNC, r);
                        break;

                case ARG_OFFSET: {
                        uint64_t u;

                        r = safe_atou64(optarg, &u);
                        if (r < 0)
                                return log_error_errno(r, "Failed to parse --offset= argument: %s", optarg);
                        if (!FILE_SIZE_VALID(u))
                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Argument to --offset= switch too large: %s", optarg);

                        arg_offset = u;
                        break;
                }

                case ARG_SIZE_MAX: {
                        uint64_t u;

                        r = parse_size(optarg, 1024, &u);
                        if (r < 0)
                                return log_error_errno(r, "Failed to parse --size-max= argument: %s", optarg);
                        if (!FILE_SIZE_VALID(u))
                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Argument to --size-max= switch too large: %s", optarg);

                        arg_size_max = u;
                        break;
                }

                case ARG_CLASS:
                        arg_class = image_class_from_string(optarg);
                        if (arg_class < 0)
                                return log_error_errno(arg_class, "Failed to parse --class= argument: %s", optarg);

                        break;

                case '?':
                        return -EINVAL;

                default:
                        assert_not_reached();
                }

        /* Make sure offset+size is still in the valid range if both set */
        if (arg_offset != UINT64_MAX && arg_size_max != UINT64_MAX &&
            ((arg_size_max > (UINT64_MAX - arg_offset)) ||
             !FILE_SIZE_VALID(arg_offset + arg_size_max)))
                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File offset und maximum size out of range.");

        if (arg_offset != UINT64_MAX && !FLAGS_SET(arg_import_flags, IMPORT_DIRECT))
                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File offset only supported in --direct mode.");

        if (!arg_image_root)
                arg_image_root = image_root_to_string(arg_class);

        return 1;
}

static int import_main(int argc, char *argv[]) {
        static const Verb verbs[] = {
                { "help", VERB_ANY, VERB_ANY, 0, help       },
                { "tar",  2,        3,        0, import_tar },
                { "raw",  2,        3,        0, import_raw },
                {}
        };

        return dispatch_verb(argc, argv, verbs, NULL);
}

static void parse_env(void) {
        int r;

        /* Let's make these relatively low-level settings also controllable via env vars. User can then set
         * them to systemd-import if they like to tweak behaviour */

        r = getenv_bool("SYSTEMD_IMPORT_BTRFS_SUBVOL");
        if (r >= 0)
                SET_FLAG(arg_import_flags, IMPORT_BTRFS_SUBVOL, r);
        else if (r != -ENXIO)
                log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_BTRFS_SUBVOL: %m");

        r = getenv_bool("SYSTEMD_IMPORT_BTRFS_QUOTA");
        if (r >= 0)
                SET_FLAG(arg_import_flags, IMPORT_BTRFS_QUOTA, r);
        else if (r != -ENXIO)
                log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_BTRFS_QUOTA: %m");

        r = getenv_bool("SYSTEMD_IMPORT_SYNC");
        if (r >= 0)
                SET_FLAG(arg_import_flags, IMPORT_SYNC, r);
        else if (r != -ENXIO)
                log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_SYNC: %m");
}

static int run(int argc, char *argv[]) {
        int r;

        setlocale(LC_ALL, "");
        log_setup();

        parse_env();

        r = parse_argv(argc, argv);
        if (r <= 0)
                return r;

        (void) ignore_signals(SIGPIPE);

        return import_main(argc, argv);
}

DEFINE_MAIN_FUNCTION(run);
Commit	Line	Data
db9ecf05	1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
b6e676ce LP	2
b6e676ce LP	3	#include <getopt.h>
ca78ad1d	4	#include <locale.h>
4f18ff2e	5	#include <unistd.h>
b6e676ce LP	6
b6e676ce LP	7	#include "sd-event.h"
3f6fd1ba	8
b5efdb8a	9	#include "alloc-util.h"
b7120388	10	#include "ansi-color.h"
d6b4d1c7	11	#include "build.h"
57f1b61b	12	#include "discover-image.h"
d32a5841	13	#include "env-util.h"
3ffd4af2	14	#include "fd-util.h"
b6e676ce	15	#include "import-raw.h"
3f6fd1ba LP	16	#include "import-tar.h"
3f6fd1ba LP	17	#include "import-util.h"
d32a5841	18	#include "io-util.h"
9412e9e9	19	#include "log.h"
5e332028	20	#include "main-func.h"
d32a5841 LP	21	#include "parse-argument.h"
d32a5841 LP	22	#include "parse-util.h"
9412e9e9 DDM	23	#include "path-util.h"
9412e9e9 DDM	24	#include "runtime-scope.h"
3f6fd1ba	25	#include "signal-util.h"
07630cea	26	#include "string-util.h"
3f6fd1ba	27	#include "verbs.h"
b6e676ce	28
7af5785d	29	static const char *arg_image_root = NULL;
d32a5841 LP	30	static ImportFlags arg_import_flags = IMPORT_BTRFS_SUBVOL \| IMPORT_BTRFS_QUOTA \| IMPORT_CONVERT_QCOW2 \| IMPORT_SYNC;
d32a5841 LP	31	static uint64_t arg_offset = UINT64_MAX, arg_size_max = UINT64_MAX;
7af5785d	32	static ImageClass arg_class = IMAGE_MACHINE;
1c0ade2e	33	static RuntimeScope arg_runtime_scope = _RUNTIME_SCOPE_INVALID;
b6e676ce	34
d32a5841 LP	35	static int normalize_local(const char local, char *ret) {
	36	_cleanup_free_ char *ll = NULL;
	37	int r;
	38
	39	assert(ret);
	40
	41	if (arg_import_flags & IMPORT_DIRECT) {
	42
	43	if (!local)
	44	return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No local path specified.");
	45
	46	if (!path_is_absolute(local)) {
	47	ll = path_join(arg_image_root, local);
	48	if (!ll)
	49	return log_oom();
	50
	51	local = ll;
	52	}
	53
	54	if (!path_is_valid(local))
	55	return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
	56	"Local path name '%s' is not valid.", local);
	57	} else {
	58	if (local) {
8f20b498	59	if (!image_name_is_valid(local))
d32a5841 LP	60	return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
	61	"Local image name '%s' is not valid.",
	62	local);
	63	} else
	64	local = "imported";
	65
	66	if (!FLAGS_SET(arg_import_flags, IMPORT_FORCE)) {
1c0ade2e	67	r = image_find(arg_runtime_scope, arg_class, local, NULL, NULL);
d32a5841 LP	68	if (r < 0) {
	69	if (r != -ENOENT)
	70	return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local);
	71	} else
	72	return log_error_errno(SYNTHETIC_ERRNO(EEXIST),
	73	"Image '%s' already exists.",
	74	local);
	75	}
	76	}
	77
	78	if (!ll) {
	79	ll = strdup(local);
	80	if (!ll)
	81	return log_oom();
	82	}
	83
	84	*ret = TAKE_PTR(ll);
b6e676ce LP	85	return 0;
	86	}
	87
d32a5841	88	static int open_source(const char path, const char local, int *ret_open_fd) {
254d1313	89	_cleanup_close_ int open_fd = -EBADF;
d32a5841 LP	90	int retval;
	91
	92	assert(local);
	93	assert(ret_open_fd);
	94
	95	if (path) {
	96	open_fd = open(path, O_RDONLY\|O_CLOEXEC\|O_NOCTTY);
	97	if (open_fd < 0)
69811f47	98	return log_error_errno(errno, "Failed to open source file '%s': %m", path);
d32a5841 LP	99
	100	retval = open_fd;
	101
	102	if (arg_offset != UINT64_MAX)
	103	log_info("Importing '%s', saving at offset %" PRIu64 " in '%s'.", path, arg_offset, local);
	104	else
	105	log_info("Importing '%s', saving as '%s'.", path, local);
	106	} else {
	107	_cleanup_free_ char *pretty = NULL;
	108
	109	retval = STDIN_FILENO;
	110
	111	(void) fd_get_path(STDIN_FILENO, &pretty);
	112
	113	if (arg_offset != UINT64_MAX)
	114	log_info("Importing '%s', saving at offset %" PRIu64 " in '%s'.", strempty(pretty), arg_offset, local);
	115	else
	116	log_info("Importing '%s', saving as '%s'.", strempty(pretty), local);
	117	}
	118
ed459ec0 LP	119	if (!FLAGS_SET(arg_import_flags, IMPORT_DIRECT))
	120	log_info("Operating on image directory '%s'.", arg_image_root);
	121
	122	if (!FLAGS_SET(arg_import_flags, IMPORT_SYNC))
	123	log_info("File system synchronization on completion is off.");
	124
d32a5841 LP	125	*ret_open_fd = TAKE_FD(open_fd);
	126	return retval;
	127	}
	128
b6e676ce LP	129	static void on_tar_finished(TarImport import, int error, void userdata) {
	130	sd_event *event = userdata;
	131	assert(import);
	132
	133	if (error == 0)
	134	log_info("Operation completed successfully.");
	135
9412e9e9	136	sd_event_exit(event, ABS(error));
b6e676ce LP	137	}
	138
	139	static int import_tar(int argc, char argv[], void userdata) {
	140	_cleanup_(tar_import_unrefp) TarImport *import = NULL;
d32a5841	141	_cleanup_free_ char ll = NULL, normalized = NULL;
4afd3348	142	_cleanup_(sd_event_unrefp) sd_event *event = NULL;
b6e676ce	143	const char path = NULL, local = NULL;
254d1313	144	_cleanup_close_ int open_fd = -EBADF;
b6e676ce LP	145	int r, fd;
	146
	147	if (argc >= 2)
1f5a2132	148	path = empty_or_dash_to_null(argv[1]);
b6e676ce LP	149
b6e676ce LP	150	if (argc >= 3)
1f5a2132	151	local = empty_or_dash_to_null(argv[2]);
d32a5841 LP	152	else if (path) {
d32a5841 LP	153	_cleanup_free_ char *l = NULL;
b6e676ce	154
d32a5841 LP	155	r = path_extract_filename(path, &l);
	156	if (r < 0)
	157	return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);
	158
	159	r = tar_strip_suffixes(l, &ll);
b6e676ce LP	160	if (r < 0)
	161	return log_oom();
	162
	163	local = ll;
d32a5841	164	}
b6e676ce	165
d32a5841 LP	166	r = normalize_local(local, &normalized);
	167	if (r < 0)
	168	return r;
b6e676ce	169
d32a5841 LP	170	fd = open_source(path, normalized, &open_fd);
d32a5841 LP	171	if (fd < 0)
b37ec1e7	172	return fd;
b6e676ce	173
d32a5841	174	r = import_allocate_event_with_signals(&event);
b6e676ce	175	if (r < 0)
d32a5841	176	return r;
b6e676ce	177
b6e676ce LP	178	r = tar_import_new(&import, event, arg_image_root, on_tar_finished, event);
	179	if (r < 0)
	180	return log_error_errno(r, "Failed to allocate importer: %m");
	181
d32a5841 LP	182	r = tar_import_start(
	183	import,
	184	fd,
	185	normalized,
	186	arg_import_flags & IMPORT_FLAGS_MASK_TAR);
b6e676ce LP	187	if (r < 0)
	188	return log_error_errno(r, "Failed to import image: %m");
	189
	190	r = sd_event_loop(event);
	191	if (r < 0)
	192	return log_error_errno(r, "Failed to run event loop: %m");
	193
	194	log_info("Exiting.");
	195	return -r;
	196	}
	197
	198	static void on_raw_finished(RawImport import, int error, void userdata) {
	199	sd_event *event = userdata;
	200	assert(import);
	201
	202	if (error == 0)
	203	log_info("Operation completed successfully.");
	204
9412e9e9	205	sd_event_exit(event, ABS(error));
b6e676ce LP	206	}
	207
	208	static int import_raw(int argc, char argv[], void userdata) {
	209	_cleanup_(raw_import_unrefp) RawImport *import = NULL;
d32a5841	210	_cleanup_free_ char ll = NULL, normalized = NULL;
4afd3348	211	_cleanup_(sd_event_unrefp) sd_event *event = NULL;
b6e676ce	212	const char path = NULL, local = NULL;
254d1313	213	_cleanup_close_ int open_fd = -EBADF;
b6e676ce LP	214	int r, fd;
	215
	216	if (argc >= 2)
1f5a2132	217	path = empty_or_dash_to_null(argv[1]);
b6e676ce LP	218
b6e676ce LP	219	if (argc >= 3)
1f5a2132	220	local = empty_or_dash_to_null(argv[2]);
d32a5841 LP	221	else if (path) {
	222	_cleanup_free_ char *l = NULL;
	223
	224	r = path_extract_filename(path, &l);
	225	if (r < 0)
	226	return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);
b6e676ce	227
d32a5841	228	r = raw_strip_suffixes(l, &ll);
b6e676ce LP	229	if (r < 0)
	230	return log_oom();
	231
	232	local = ll;
d32a5841	233	}
b6e676ce	234
d32a5841 LP	235	r = normalize_local(local, &normalized);
	236	if (r < 0)
	237	return r;
b6e676ce	238
d32a5841 LP	239	fd = open_source(path, normalized, &open_fd);
	240	if (fd < 0)
	241	return fd;
b6e676ce	242
d32a5841	243	r = import_allocate_event_with_signals(&event);
b6e676ce	244	if (r < 0)
d32a5841	245	return r;
b6e676ce	246
b6e676ce LP	247	r = raw_import_new(&import, event, arg_image_root, on_raw_finished, event);
	248	if (r < 0)
	249	return log_error_errno(r, "Failed to allocate importer: %m");
	250
d32a5841 LP	251	r = raw_import_start(
	252	import,
	253	fd,
	254	normalized,
	255	arg_offset,
	256	arg_size_max,
	257	arg_import_flags & IMPORT_FLAGS_MASK_RAW);
b6e676ce LP	258	if (r < 0)
	259	return log_error_errno(r, "Failed to import image: %m");
	260
	261	r = sd_event_loop(event);
	262	if (r < 0)
	263	return log_error_errno(r, "Failed to run event loop: %m");
	264
	265	log_info("Exiting.");
	266	return -r;
	267	}
	268
	269	static int help(int argc, char argv[], void userdata) {
	270
d32a5841	271	printf("%1$s [OPTIONS...] {COMMAND} ...\n"
7af5785d	272	"\n%4$sImport disk images.%5$s\n"
d32a5841 LP	273	"\n%2$sCommands:%3$s\n"
	274	" tar FILE [NAME] Import a TAR image\n"
	275	" raw FILE [NAME] Import a RAW image\n"
	276	"\n%2$sOptions:%3$s\n"
b6e676ce LP	277	" -h --help Show this help\n"
	278	" --version Show package version\n"
	279	" --force Force creation of image\n"
	280	" --image-root=PATH Image root directory\n"
d32a5841 LP	281	" --read-only Create a read-only image\n"
	282	" --direct Import directly to specified file\n"
	283	" --btrfs-subvol=BOOL Controls whether to create a btrfs subvolume\n"
	284	" instead of a directory\n"
	285	" --btrfs-quota=BOOL Controls whether to set up quota for btrfs\n"
	286	" subvolume\n"
	287	" --convert-qcow2=BOOL Controls whether to convert QCOW2 images to\n"
	288	" regular disk images\n"
	289	" --sync=BOOL Controls whether to sync() before completing\n"
	290	" --offset=BYTES Offset to seek to in destination\n"
7af5785d LP	291	" --size-max=BYTES Maximum number of bytes to write to destination\n"
	292	" --class=CLASS Select image class (machine, sysext, confext,\n"
	293	" portable)\n",
d32a5841 LP	294	program_invocation_short_name,
	295	ansi_underline(),
	296	ansi_normal(),
	297	ansi_highlight(),
	298	ansi_normal());
b6e676ce LP	299
	300	return 0;
	301	}
	302
	303	static int parse_argv(int argc, char *argv[]) {
	304
	305	enum {
	306	ARG_VERSION = 0x100,
	307	ARG_FORCE,
	308	ARG_IMAGE_ROOT,
	309	ARG_READ_ONLY,
d32a5841 LP	310	ARG_DIRECT,
	311	ARG_BTRFS_SUBVOL,
	312	ARG_BTRFS_QUOTA,
	313	ARG_CONVERT_QCOW2,
	314	ARG_SYNC,
	315	ARG_OFFSET,
	316	ARG_SIZE_MAX,
7af5785d	317	ARG_CLASS,
b6e676ce LP	318	};
	319
	320	static const struct option options[] = {
	321	{ "help", no_argument, NULL, 'h' },
	322	{ "version", no_argument, NULL, ARG_VERSION },
	323	{ "force", no_argument, NULL, ARG_FORCE },
	324	{ "image-root", required_argument, NULL, ARG_IMAGE_ROOT },
	325	{ "read-only", no_argument, NULL, ARG_READ_ONLY },
d32a5841 LP	326	{ "direct", no_argument, NULL, ARG_DIRECT },
	327	{ "btrfs-subvol", required_argument, NULL, ARG_BTRFS_SUBVOL },
	328	{ "btrfs-quota", required_argument, NULL, ARG_BTRFS_QUOTA },
	329	{ "convert-qcow2", required_argument, NULL, ARG_CONVERT_QCOW2 },
	330	{ "sync", required_argument, NULL, ARG_SYNC },
	331	{ "offset", required_argument, NULL, ARG_OFFSET },
	332	{ "size-max", required_argument, NULL, ARG_SIZE_MAX },
7af5785d	333	{ "class", required_argument, NULL, ARG_CLASS },
b6e676ce LP	334	{}
	335	};
	336
d32a5841	337	int r, c;
b6e676ce LP	338
	339	assert(argc >= 0);
	340	assert(argv);
	341
	342	while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
	343
	344	switch (c) {
	345
	346	case 'h':
	347	return help(0, NULL, NULL);
	348
	349	case ARG_VERSION:
3f6fd1ba	350	return version();
b6e676ce LP	351
b6e676ce LP	352	case ARG_FORCE:
5183c50a	353	arg_import_flags \|= IMPORT_FORCE;
b6e676ce LP	354	break;
	355
	356	case ARG_IMAGE_ROOT:
	357	arg_image_root = optarg;
	358	break;
	359
	360	case ARG_READ_ONLY:
5183c50a	361	arg_import_flags \|= IMPORT_READ_ONLY;
b6e676ce LP	362	break;
b6e676ce LP	363
d32a5841 LP	364	case ARG_DIRECT:
	365	arg_import_flags \|= IMPORT_DIRECT;
	366	break;
	367
	368	case ARG_BTRFS_SUBVOL:
	369	r = parse_boolean_argument("--btrfs-subvol=", optarg, NULL);
	370	if (r < 0)
	371	return r;
	372
	373	SET_FLAG(arg_import_flags, IMPORT_BTRFS_SUBVOL, r);
	374	break;
	375
	376	case ARG_BTRFS_QUOTA:
	377	r = parse_boolean_argument("--btrfs-quota=", optarg, NULL);
	378	if (r < 0)
	379	return r;
	380
	381	SET_FLAG(arg_import_flags, IMPORT_BTRFS_QUOTA, r);
	382	break;
	383
	384	case ARG_CONVERT_QCOW2:
	385	r = parse_boolean_argument("--convert-qcow2=", optarg, NULL);
	386	if (r < 0)
	387	return r;
	388
	389	SET_FLAG(arg_import_flags, IMPORT_CONVERT_QCOW2, r);
	390	break;
	391
	392	case ARG_SYNC:
	393	r = parse_boolean_argument("--sync=", optarg, NULL);
	394	if (r < 0)
	395	return r;
	396
	397	SET_FLAG(arg_import_flags, IMPORT_SYNC, r);
	398	break;
	399
	400	case ARG_OFFSET: {
	401	uint64_t u;
	402
	403	r = safe_atou64(optarg, &u);
	404	if (r < 0)
	405	return log_error_errno(r, "Failed to parse --offset= argument: %s", optarg);
	406	if (!FILE_SIZE_VALID(u))
	407	return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Argument to --offset= switch too large: %s", optarg);
	408
	409	arg_offset = u;
	410	break;
	411	}
	412
	413	case ARG_SIZE_MAX: {
	414	uint64_t u;
	415
	416	r = parse_size(optarg, 1024, &u);
	417	if (r < 0)
	418	return log_error_errno(r, "Failed to parse --size-max= argument: %s", optarg);
	419	if (!FILE_SIZE_VALID(u))
	420	return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Argument to --size-max= switch too large: %s", optarg);
	421
	422	arg_size_max = u;
	423	break;
	424	}
	425
7af5785d LP	426	case ARG_CLASS:
	427	arg_class = image_class_from_string(optarg);
	428	if (arg_class < 0)
	429	return log_error_errno(arg_class, "Failed to parse --class= argument: %s", optarg);
	430
	431	break;
	432
b6e676ce LP	433	case '?':
	434	return -EINVAL;
	435
	436	default:
04499a70	437	assert_not_reached();
b6e676ce LP	438	}
b6e676ce LP	439
d32a5841 LP	440	/* Make sure offset+size is still in the valid range if both set */
	441	if (arg_offset != UINT64_MAX && arg_size_max != UINT64_MAX &&
	442	((arg_size_max > (UINT64_MAX - arg_offset)) \|\|
	443	!FILE_SIZE_VALID(arg_offset + arg_size_max)))
	444	return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File offset und maximum size out of range.");
	445
	446	if (arg_offset != UINT64_MAX && !FLAGS_SET(arg_import_flags, IMPORT_DIRECT))
	447	return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File offset only supported in --direct mode.");
	448
7af5785d LP	449	if (!arg_image_root)
	450	arg_image_root = image_root_to_string(arg_class);
	451
b6e676ce LP	452	return 1;
	453	}
	454
	455	static int import_main(int argc, char *argv[]) {
b6e676ce LP	456	static const Verb verbs[] = {
	457	{ "help", VERB_ANY, VERB_ANY, 0, help },
	458	{ "tar", 2, 3, 0, import_tar },
	459	{ "raw", 2, 3, 0, import_raw },
	460	{}
	461	};
	462
	463	return dispatch_verb(argc, argv, verbs, NULL);
	464	}
	465
d32a5841 LP	466	static void parse_env(void) {
	467	int r;
	468
	469	/* Let's make these relatively low-level settings also controllable via env vars. User can then set
	470	* them to systemd-import if they like to tweak behaviour */
	471
	472	r = getenv_bool("SYSTEMD_IMPORT_BTRFS_SUBVOL");
	473	if (r >= 0)
	474	SET_FLAG(arg_import_flags, IMPORT_BTRFS_SUBVOL, r);
	475	else if (r != -ENXIO)
	476	log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_BTRFS_SUBVOL: %m");
	477
	478	r = getenv_bool("SYSTEMD_IMPORT_BTRFS_QUOTA");
	479	if (r >= 0)
	480	SET_FLAG(arg_import_flags, IMPORT_BTRFS_QUOTA, r);
	481	else if (r != -ENXIO)
	482	log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_BTRFS_QUOTA: %m");
	483
	484	r = getenv_bool("SYSTEMD_IMPORT_SYNC");
	485	if (r >= 0)
	486	SET_FLAG(arg_import_flags, IMPORT_SYNC, r);
	487	else if (r != -ENXIO)
	488	log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_SYNC: %m");
	489	}
	490
5272ae42	491	static int run(int argc, char *argv[]) {
b6e676ce LP	492	int r;
	493
	494	setlocale(LC_ALL, "");
b37ec1e7	495	log_setup();
b6e676ce	496
d32a5841 LP	497	parse_env();
d32a5841 LP	498
b6e676ce LP	499	r = parse_argv(argc, argv);
b6e676ce LP	500	if (r <= 0)
d32a5841	501	return r;
b6e676ce	502
9c274488	503	(void) ignore_signals(SIGPIPE);
b6e676ce	504
5272ae42	505	return import_main(argc, argv);
b6e676ce	506	}
5272ae42 ZJS	507
5272ae42 ZJS	508	DEFINE_MAIN_FUNCTION(run);