service: add new RootImageOptions feature

[thirdparty/systemd.git] / src / shared / dissect-image.h

diff --git a/src/shared/dissect-image.h b/src/shared/dissect-image.h
index 6a666ca7c70bec70eaf39666b3705fdc10816040..52aa377a671a32616ce11a7162ae5c68c1b7912c 100644 (file)
--- a/src/shared/dissect-image.h
+++ b/src/shared/dissect-image.h
@@ -5,11 +5,13 @@
 
 #include "sd-id128.h"
 
+#include "list.h"
 #include "macro.h"
 
 typedef struct DissectedImage DissectedImage;
 typedef struct DissectedPartition DissectedPartition;
 typedef struct DecryptedImage DecryptedImage;
+typedef struct MountOptions MountOptions;
 
 struct DissectedPartition {
         bool found:1;
@@ -21,6 +23,7 @@ struct DissectedPartition {
         char *node;
         char *decrypted_node;
         char *decrypted_fstype;
+        char *mount_options;
 };
 
 enum  {
@@ -63,12 +66,15 @@ typedef enum DissectImageFlags {
         DISSECT_IMAGE_NO_UDEV             = 1 << 9,  /* Don't wait for udev initializing things */
         DISSECT_IMAGE_RELAX_VAR_CHECK     = 1 << 10, /* Don't insist that the UUID of /var is hashed from /etc/machine-id */
         DISSECT_IMAGE_FSCK                = 1 << 11, /* File system check the partition before mounting (no effect when combined with DISSECT_IMAGE_READ_ONLY) */
+        DISSECT_IMAGE_NO_PARTITION_TABLE  = 1 << 12, /* Only recognize single file system images */
+        DISSECT_IMAGE_VERITY_SHARE        = 1 << 13, /* When activating a verity device, reuse existing one if already open */
 } DissectImageFlags;
 
 struct DissectedImage {
         bool encrypted:1;
         bool verity:1;     /* verity available and usable */
         bool can_verity:1; /* verity available, but not necessarily used */
+        bool single_file_system:1; /* MBR/GPT or single file system */
 
         DissectedPartition partitions[_PARTITION_DESIGNATOR_MAX];
 
@@ -78,15 +84,25 @@ struct DissectedImage {
         char **os_release;
 };
 
+struct MountOptions {
+        unsigned partition_number;
+        char *options;
+        LIST_FIELDS(MountOptions, mount_options);
+};
+
+MountOptions* mount_options_free_all(MountOptions *options);
+DEFINE_TRIVIAL_CLEANUP_FUNC(MountOptions*, mount_options_free_all);
+const char* mount_options_from_part(const MountOptions *options, unsigned int partition_number);
+
 int probe_filesystem(const char *node, char **ret_fstype);
-int dissect_image(int fd, const void *root_hash, size_t root_hash_size, DissectImageFlags flags, DissectedImage **ret);
-int dissect_image_and_warn(int fd, const char *name, const void *root_hash, size_t root_hash_size, DissectImageFlags flags, DissectedImage **ret);
+int dissect_image(int fd, const void *root_hash, size_t root_hash_size, const char *verity_data, const MountOptions *mount_options, DissectImageFlags flags, DissectedImage **ret);
+int dissect_image_and_warn(int fd, const char *name, const void *root_hash, size_t root_hash_size, const char *verity_data, const MountOptions *mount_options, DissectImageFlags flags, DissectedImage **ret);
 
 DissectedImage* dissected_image_unref(DissectedImage *m);
 DEFINE_TRIVIAL_CLEANUP_FUNC(DissectedImage*, dissected_image_unref);
 
-int dissected_image_decrypt(DissectedImage *m, const char *passphrase, const void *root_hash, size_t root_hash_size, DissectImageFlags flags, DecryptedImage **ret);
-int dissected_image_decrypt_interactively(DissectedImage *m, const char *passphrase, const void *root_hash, size_t root_hash_size, DissectImageFlags flags, DecryptedImage **ret);
+int dissected_image_decrypt(DissectedImage *m, const char *passphrase, const void *root_hash, size_t root_hash_size, const char *verity_data, const char *root_hash_sig_path, const void *root_hash_sig, size_t root_hash_sig_size, DissectImageFlags flags, DecryptedImage **ret);
+int dissected_image_decrypt_interactively(DissectedImage *m, const char *passphrase, const void *root_hash, size_t root_hash_size, const char *verity_data, const char *root_hash_sig_path, const void *root_hash_sig, size_t root_hash_sig_size, DissectImageFlags flags, DecryptedImage **ret);
 int dissected_image_mount(DissectedImage *m, const char *dest, uid_t uid_shift, DissectImageFlags flags);
 
 int dissected_image_acquire_metadata(DissectedImage *m);
@@ -98,4 +114,6 @@ int decrypted_image_relinquish(DecryptedImage *d);
 const char* partition_designator_to_string(int i) _const_;
 int partition_designator_from_string(const char *name) _pure_;
 
-int root_hash_load(const char *image, void **ret, size_t *ret_size);
+int verity_metadata_load(const char *image, const char *root_hash_path, void **ret_roothash, size_t *ret_roothash_size, char **ret_verity_data, char **ret_roothashsig);
+bool dissected_image_can_do_verity(const DissectedImage *image, unsigned partition_designator);
+bool dissected_image_has_verity(const DissectedImage *image, unsigned partition_designator);