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tree-wide: switch dlopen hooks over to DLSYM_PROTOTYPE()/DLSYM_FUNCTION()

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We have these pretty macros, let's use them everywhere (so far we mostly
used them for newer additions only).

This PR is mostly an excercise in "perl -p -i -e", but there are some
special cases:

* idn-util.c exposes a function whose prototype in the official library
  headers is marked with the "const" attribute, and this apparently does
  not propagate along typeof() correctly and then
  __builtin_types_compatible_p() fails later because it detects that
  prototype and original function don't match in prototype.

* libbpf removed some symbols in newer versions, hence we need to define
  some prototypes manually to still be able to build.

* libcryptsetup marked a symbol as deprecated we want to use (knowing it
  is deprecated). By using the macros this is detected by the compiler.
  We work around it via the usual warning off macros.

Note by using these macros we assume that all symbols are known during
build time. Which might not be the case. We might need to revert this
commit for some symbols if this trips up builds on older distros.
This commit is contained in:
Lennart Poettering
2024-03-01 15:51:24 +00:00
committed by Luca Boccassi
parent 96069e57a0
commit 9dbabd0a8b
21 changed files with 427 additions and 427 deletions
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src/shared/cryptsetup-util.c
+42 -40
View File
@@ -9,58 +9,60 @@
#if HAVE_LIBCRYPTSETUP
static void *cryptsetup_dl = NULL;
int (*sym_crypt_activate_by_passphrase)(struct crypt_device *cd, const char *name, int keyslot, const char *passphrase, size_t passphrase_size, uint32_t flags);
DLSYM_FUNCTION(crypt_activate_by_passphrase);
#if HAVE_CRYPT_ACTIVATE_BY_SIGNED_KEY
int (*sym_crypt_activate_by_signed_key)(struct crypt_device *cd, const char *name, const char *volume_key, size_t volume_key_size, const char *signature, size_t signature_size, uint32_t flags);
DLSYM_FUNCTION(crypt_activate_by_signed_key);
#endif
int (*sym_crypt_activate_by_volume_key)(struct crypt_device *cd, const char *name, const char *volume_key, size_t volume_key_size, uint32_t flags);
int (*sym_crypt_deactivate_by_name)(struct crypt_device *cd, const char *name, uint32_t flags);
int (*sym_crypt_format)(struct crypt_device *cd, const char *type, const char *cipher, const char *cipher_mode, const char *uuid, const char *volume_key, size_t volume_key_size, void *params);
void (*sym_crypt_free)(struct crypt_device *cd);
const char *(*sym_crypt_get_cipher)(struct crypt_device *cd);
const char *(*sym_crypt_get_cipher_mode)(struct crypt_device *cd);
uint64_t (*sym_crypt_get_data_offset)(struct crypt_device *cd);
const char *(*sym_crypt_get_device_name)(struct crypt_device *cd);
const char *(*sym_crypt_get_dir)(void);
const char *(*sym_crypt_get_type)(struct crypt_device *cd);
const char *(*sym_crypt_get_uuid)(struct crypt_device *cd);
int (*sym_crypt_get_verity_info)(struct crypt_device *cd, struct crypt_params_verity *vp);
int (*sym_crypt_get_volume_key_size)(struct crypt_device *cd);
int (*sym_crypt_init)(struct crypt_device **cd, const char *device);
int (*sym_crypt_init_by_name)(struct crypt_device **cd, const char *name);
int (*sym_crypt_keyslot_add_by_volume_key)(struct crypt_device *cd, int keyslot, const char *volume_key, size_t volume_key_size, const char *passphrase, size_t passphrase_size);
int (*sym_crypt_keyslot_destroy)(struct crypt_device *cd, int keyslot);
int (*sym_crypt_keyslot_max)(const char *type);
int (*sym_crypt_load)(struct crypt_device *cd, const char *requested_type, void *params);
int (*sym_crypt_resize)(struct crypt_device *cd, const char *name, uint64_t new_size);
int (*sym_crypt_resume_by_passphrase)(struct crypt_device *cd, const char *name, int keyslot, const char *passphrase, size_t passphrase_size);
int (*sym_crypt_set_data_device)(struct crypt_device *cd, const char *device);
void (*sym_crypt_set_debug_level)(int level);
void (*sym_crypt_set_log_callback)(struct crypt_device *cd, void (*log)(int level, const char *msg, void *usrptr), void *usrptr);
DLSYM_FUNCTION(crypt_activate_by_volume_key);
DLSYM_FUNCTION(crypt_deactivate_by_name);
DLSYM_FUNCTION(crypt_format);
DLSYM_FUNCTION(crypt_free);
DLSYM_FUNCTION(crypt_get_cipher);
DLSYM_FUNCTION(crypt_get_cipher_mode);
DLSYM_FUNCTION(crypt_get_data_offset);
DLSYM_FUNCTION(crypt_get_device_name);
DLSYM_FUNCTION(crypt_get_dir);
DLSYM_FUNCTION(crypt_get_type);
DLSYM_FUNCTION(crypt_get_uuid);
DLSYM_FUNCTION(crypt_get_verity_info);
DLSYM_FUNCTION(crypt_get_volume_key_size);
DLSYM_FUNCTION(crypt_init);
DLSYM_FUNCTION(crypt_init_by_name);
DLSYM_FUNCTION(crypt_keyslot_add_by_volume_key);
DLSYM_FUNCTION(crypt_keyslot_destroy);
DLSYM_FUNCTION(crypt_keyslot_max);
DLSYM_FUNCTION(crypt_load);
DLSYM_FUNCTION(crypt_resize);
DLSYM_FUNCTION(crypt_resume_by_passphrase);
DLSYM_FUNCTION(crypt_set_data_device);
DLSYM_FUNCTION(crypt_set_debug_level);
DLSYM_FUNCTION(crypt_set_log_callback);
#if HAVE_CRYPT_SET_METADATA_SIZE
int (*sym_crypt_set_metadata_size)(struct crypt_device *cd, uint64_t metadata_size, uint64_t keyslots_size);
DLSYM_FUNCTION(crypt_set_metadata_size);
#endif
int (*sym_crypt_set_pbkdf_type)(struct crypt_device *cd, const struct crypt_pbkdf_type *pbkdf);
int (*sym_crypt_suspend)(struct crypt_device *cd, const char *name);
int (*sym_crypt_token_json_get)(struct crypt_device *cd, int token, const char **json);
int (*sym_crypt_token_json_set)(struct crypt_device *cd, int token, const char *json);
DLSYM_FUNCTION(crypt_set_pbkdf_type);
DLSYM_FUNCTION(crypt_suspend);
DLSYM_FUNCTION(crypt_token_json_get);
DLSYM_FUNCTION(crypt_token_json_set);
#if HAVE_CRYPT_TOKEN_MAX
int (*sym_crypt_token_max)(const char *type);
DLSYM_FUNCTION(crypt_token_max);
#endif
crypt_token_info (*sym_crypt_token_status)(struct crypt_device *cd, int token, const char **type);
int (*sym_crypt_volume_key_get)(struct crypt_device *cd, int keyslot, char *volume_key, size_t *volume_key_size, const char *passphrase, size_t passphrase_size);
DLSYM_FUNCTION(crypt_token_status);
DLSYM_FUNCTION(crypt_volume_key_get);
#if HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE
int (*sym_crypt_reencrypt_init_by_passphrase)(struct crypt_device *cd, const char *name, const char *passphrase, size_t passphrase_size, int keyslot_old, int keyslot_new, const char *cipher, const char *cipher_mode, const struct crypt_params_reencrypt *params);
DLSYM_FUNCTION(crypt_reencrypt_init_by_passphrase);
#endif
#if HAVE_CRYPT_REENCRYPT
int (*sym_crypt_reencrypt)(struct crypt_device *cd, int (*progress)(uint64_t size, uint64_t offset, void *usrptr));
DISABLE_WARNING_DEPRECATED_DECLARATIONS;
DLSYM_FUNCTION(crypt_reencrypt);
REENABLE_WARNING;
#endif
int (*sym_crypt_metadata_locking)(struct crypt_device *cd, int enable);
DLSYM_FUNCTION(crypt_metadata_locking);
#if HAVE_CRYPT_SET_DATA_OFFSET
int (*sym_crypt_set_data_offset)(struct crypt_device *cd, uint64_t data_offset);
DLSYM_FUNCTION(crypt_set_data_offset);
#endif
int (*sym_crypt_header_restore)(struct crypt_device *cd, const char *requested_type, const char *backup_file);
int (*sym_crypt_volume_key_keyring)(struct crypt_device *cd, int enable);
DLSYM_FUNCTION(crypt_header_restore);
DLSYM_FUNCTION(crypt_volume_key_keyring);
/* Unfortunately libcryptsetup provides neither an environment variable to redirect where to look for token
* modules, nor does it have an API to change the token lookup path at runtime. The maintainers suggest using