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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
8c1be37e LP |
2 | #pragma once |
3 | ||
4 | /*** | |
5 | This file is part of systemd. | |
6 | ||
7 | Copyright 2016 Lennart Poettering | |
8c1be37e LP |
8 | ***/ |
9 | ||
10 | #include <stdbool.h> | |
11 | ||
dccca82b LP |
12 | #include "sd-id128.h" |
13 | ||
8c1be37e LP |
14 | #include "macro.h" |
15 | ||
16 | typedef struct DissectedImage DissectedImage; | |
17 | typedef struct DissectedPartition DissectedPartition; | |
18b5886e | 18 | typedef struct DecryptedImage DecryptedImage; |
8c1be37e LP |
19 | |
20 | struct DissectedPartition { | |
21 | bool found:1; | |
22 | bool rw:1; | |
23 | int partno; /* -1 if there was no partition and the images contains a file system directly */ | |
24 | int architecture; /* Intended architecture: either native, secondary or unset (-1). */ | |
be30ad41 | 25 | sd_id128_t uuid; /* Partition entry UUID as reported by the GPT */ |
8c1be37e LP |
26 | char *fstype; |
27 | char *node; | |
18b5886e LP |
28 | char *decrypted_node; |
29 | char *decrypted_fstype; | |
8c1be37e LP |
30 | }; |
31 | ||
32 | enum { | |
33 | PARTITION_ROOT, | |
34 | PARTITION_ROOT_SECONDARY, /* Secondary architecture */ | |
35 | PARTITION_HOME, | |
36 | PARTITION_SRV, | |
37 | PARTITION_ESP, | |
38 | PARTITION_SWAP, | |
4623e8e6 LP |
39 | PARTITION_ROOT_VERITY, /* verity data for the PARTITION_ROOT partition */ |
40 | PARTITION_ROOT_SECONDARY_VERITY, /* verity data for the PARTITION_ROOT_SECONDARY partition */ | |
8c1be37e LP |
41 | _PARTITION_DESIGNATOR_MAX, |
42 | _PARTITION_DESIGNATOR_INVALID = -1 | |
43 | }; | |
44 | ||
4623e8e6 LP |
45 | static inline int PARTITION_VERITY_OF(int p) { |
46 | if (p == PARTITION_ROOT) | |
47 | return PARTITION_ROOT_VERITY; | |
48 | if (p == PARTITION_ROOT_SECONDARY) | |
49 | return PARTITION_ROOT_SECONDARY_VERITY; | |
50 | return _PARTITION_DESIGNATOR_INVALID; | |
51 | } | |
52 | ||
18b5886e | 53 | typedef enum DissectImageFlags { |
2d3a5a73 LP |
54 | DISSECT_IMAGE_READ_ONLY = 1 << 0, |
55 | DISSECT_IMAGE_DISCARD_ON_LOOP = 1 << 1, /* Turn on "discard" if on a loop device and file system supports it */ | |
56 | DISSECT_IMAGE_DISCARD = 1 << 2, /* Turn on "discard" if file system supports it, on all block devices */ | |
57 | DISSECT_IMAGE_DISCARD_ON_CRYPTO = 1 << 3, /* Turn on "discard" also on crypto devices */ | |
971e2ef0 ZJS |
58 | DISSECT_IMAGE_DISCARD_ANY = DISSECT_IMAGE_DISCARD_ON_LOOP | |
59 | DISSECT_IMAGE_DISCARD | | |
60 | DISSECT_IMAGE_DISCARD_ON_CRYPTO, | |
2d3a5a73 LP |
61 | DISSECT_IMAGE_GPT_ONLY = 1 << 4, /* Only recognize images with GPT partition tables */ |
62 | DISSECT_IMAGE_REQUIRE_ROOT = 1 << 5, /* Don't accept disks without root partition */ | |
63 | DISSECT_IMAGE_MOUNT_ROOT_ONLY = 1 << 6, /* Mount only the root partition */ | |
64 | DISSECT_IMAGE_MOUNT_NON_ROOT_ONLY = 1 << 7, /* Mount only non-root partitions */ | |
18b5886e | 65 | } DissectImageFlags; |
8c1be37e LP |
66 | |
67 | struct DissectedImage { | |
4623e8e6 LP |
68 | bool encrypted:1; |
69 | bool verity:1; /* verity available and usable */ | |
70 | bool can_verity:1; /* verity available, but not necessarily used */ | |
3b925504 | 71 | |
8c1be37e | 72 | DissectedPartition partitions[_PARTITION_DESIGNATOR_MAX]; |
3b925504 LP |
73 | |
74 | char *hostname; | |
75 | sd_id128_t machine_id; | |
76 | char **machine_info; | |
77 | char **os_release; | |
8c1be37e LP |
78 | }; |
79 | ||
c34b75a1 | 80 | int probe_filesystem(const char *node, char **ret_fstype); |
9b6deb03 | 81 | int dissect_image(int fd, const void *root_hash, size_t root_hash_size, DissectImageFlags flags, DissectedImage **ret); |
4526113f | 82 | int dissect_image_and_warn(int fd, const char *name, const void *root_hash, size_t root_hash_size, DissectImageFlags flags, DissectedImage **ret); |
8c1be37e LP |
83 | |
84 | DissectedImage* dissected_image_unref(DissectedImage *m); | |
85 | DEFINE_TRIVIAL_CLEANUP_FUNC(DissectedImage*, dissected_image_unref); | |
86 | ||
4623e8e6 LP |
87 | int dissected_image_decrypt(DissectedImage *m, const char *passphrase, const void *root_hash, size_t root_hash_size, DissectImageFlags flags, DecryptedImage **ret); |
88 | int dissected_image_decrypt_interactively(DissectedImage *m, const char *passphrase, const void *root_hash, size_t root_hash_size, DissectImageFlags flags, DecryptedImage **ret); | |
2d3a5a73 | 89 | int dissected_image_mount(DissectedImage *m, const char *dest, uid_t uid_shift, DissectImageFlags flags); |
18b5886e | 90 | |
3b925504 LP |
91 | int dissected_image_acquire_metadata(DissectedImage *m); |
92 | ||
18b5886e LP |
93 | DecryptedImage* decrypted_image_unref(DecryptedImage *p); |
94 | DEFINE_TRIVIAL_CLEANUP_FUNC(DecryptedImage*, decrypted_image_unref); | |
95 | int decrypted_image_relinquish(DecryptedImage *d); | |
8c1be37e LP |
96 | |
97 | const char* partition_designator_to_string(int i) _const_; | |
98 | int partition_designator_from_string(const char *name) _pure_; | |
78ebe980 LP |
99 | |
100 | int root_hash_load(const char *image, void **ret, size_t *ret_size); |