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dissect: introduce new helper dissected_image_mount_and_warn() and use it everywhere

This commit is contained in:
Lennart Poettering 2020-08-11 15:56:12 +02:00
parent fa45d12c1c
commit af187ab237
4 changed files with 36 additions and 19 deletions
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12
src/dissect/dissect.c
View File

@ -450,11 +450,9 @@ static int action_mount(DissectedImage *m, LoopDevice *d) {
if (r < 0)
return r;
r = dissected_image_mount(m, arg_path, UID_INVALID, arg_flags);
if (r == -EUCLEAN)
return log_error_errno(r, "File system check on image failed: %m");
r = dissected_image_mount_and_warn(m, arg_path, UID_INVALID, arg_flags);
if (r < 0)
return log_error_errno(r, "Failed to mount image: %m");
return r;
if (di) {
r = decrypted_image_relinquish(di);
@ -500,11 +498,9 @@ static int action_copy(DissectedImage *m, LoopDevice *d) {
created_dir = TAKE_PTR(temp);
r = dissected_image_mount(m, created_dir, UID_INVALID, arg_flags);
if (r == -EUCLEAN)
return log_error_errno(r, "File system check on image failed: %m");
r = dissected_image_mount_and_warn(m, created_dir, UID_INVALID, arg_flags);
if (r < 0)
return log_error_errno(r, "Failed to mount image: %m");
return r;
mounted_dir = TAKE_PTR(created_dir);

13
src/nspawn/nspawn.c
View File

@ -3369,14 +3369,13 @@ static int outer_child(
* uid shift known. That way we can mount VFAT file systems shifted to the right place right away. This
* makes sure ESP partitions and userns are compatible. */
r = dissected_image_mount(dissected_image, directory, arg_uid_shift,
DISSECT_IMAGE_MOUNT_ROOT_ONLY|DISSECT_IMAGE_DISCARD_ON_LOOP|
(arg_read_only ? DISSECT_IMAGE_READ_ONLY : DISSECT_IMAGE_FSCK)|
(arg_start_mode == START_BOOT ? DISSECT_IMAGE_VALIDATE_OS : 0));
if (r == -EUCLEAN)
return log_error_errno(r, "File system check for image failed: %m");
r = dissected_image_mount_and_warn(
dissected_image, directory, arg_uid_shift,
DISSECT_IMAGE_MOUNT_ROOT_ONLY|DISSECT_IMAGE_DISCARD_ON_LOOP|
(arg_read_only ? DISSECT_IMAGE_READ_ONLY : DISSECT_IMAGE_FSCK)|
(arg_start_mode == START_BOOT ? DISSECT_IMAGE_VALIDATE_OS : 0));
if (r < 0)
return log_error_errno(r, "Failed to mount image root file system: %m");
return r;
}
r = determine_uid_shift(directory);

29
src/shared/dissect-image.c
View File

@ -1145,6 +1145,29 @@ int dissected_image_mount(DissectedImage *m, const char *where, uid_t uid_shift,
return 0;
}
int dissected_image_mount_and_warn(DissectedImage *m, const char *where, uid_t uid_shift, DissectImageFlags flags) {
int r;
assert(m);
assert(where);
r = dissected_image_mount(m, where, uid_shift, flags);
if (r == -ENXIO)
return log_error_errno(r, "Not root file system found in image.");
if (r == -EMEDIUMTYPE)
return log_error_errno(r, "No suitable os-release file in image found.");
if (r == -EUNATCH)
return log_error_errno(r, "Encrypted file system discovered, but decryption not requested.");
if (r == -EUCLEAN)
return log_error_errno(r, "File system check on image failed.");
if (r == -EBUSY)
return log_error_errno(r, "File system already mounted elsewhere.");
if (r < 0)
return log_error_errno(r, "Failed to mount image: %m");
return r;
}
#if HAVE_LIBCRYPTSETUP
typedef struct DecryptedPartition {
struct crypt_device *device;
@ -2031,11 +2054,9 @@ int mount_image_privately_interactively(
created_dir = TAKE_PTR(temp);
r = dissected_image_mount(dissected_image, created_dir, UID_INVALID, flags);
if (r == -EUCLEAN)
return log_error_errno(r, "File system check on image failed: %m");
r = dissected_image_mount_and_warn(dissected_image, created_dir, UID_INVALID, flags);
if (r < 0)
return log_error_errno(r, "Failed to mount image: %m");
return r;
if (decrypted_image) {
r = decrypted_image_relinquish(decrypted_image);

1
src/shared/dissect-image.h
View File

@ -106,6 +106,7 @@ 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, 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_mount_and_warn(DissectedImage *m, const char *where, uid_t uid_shift, DissectImageFlags flags);
int dissected_image_acquire_metadata(DissectedImage *m);