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shared/bus-unit-util: define helper for RootHash=

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2025-07-03 19:35:33 +02:00
parent 8f90f4b86f
commit 4d92c1da45
1 changed files with 21 additions and 17 deletions
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src/shared/bus-unit-util.c
+21 -17
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@@ -1600,6 +1600,25 @@ static int bus_append_temporary_file_system(sd_bus_message *m, const char *field
return 1;
}
static int bus_append_root_hash(sd_bus_message *m, const char *field, const char *eq) {
_cleanup_free_ void *roothash_decoded = NULL;
size_t roothash_decoded_size = 0;
int r;
/* We have the path to a roothash to load and decode, eg: RootHash=/foo/bar.roothash */
if (path_is_absolute(eq))
return bus_append_string(m, "RootHashPath", eq);
/* We have a roothash to decode, eg: RootHash=012345789abcdef */
r = unhexmem(eq, &roothash_decoded, &roothash_decoded_size);
if (r < 0)
return log_error_errno(r, "Failed to decode RootHash= '%s': %m", eq);
if (roothash_decoded_size < sizeof(sd_id128_t))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "RootHash= '%s' is too short.", eq);
return bus_append_byte_array(m, field, roothash_decoded, roothash_decoded_size);
}
static int bus_append_cgroup_property(sd_bus_message *m, const char *field, const char *eq) {
if (STR_IN_SET(field, "DevicePolicy",
"Slice",
@@ -1946,23 +1965,8 @@ static int bus_append_execute_property(sd_bus_message *m, const char *field, con
if (streq(field, "TemporaryFileSystem"))
return bus_append_temporary_file_system(m, field, eq);
if (streq(field, "RootHash")) {
_cleanup_free_ void *roothash_decoded = NULL;
size_t roothash_decoded_size = 0;
/* We have the path to a roothash to load and decode, eg: RootHash=/foo/bar.roothash */
if (path_is_absolute(eq))
return bus_append_string(m, "RootHashPath", eq);
/* We have a roothash to decode, eg: RootHash=012345789abcdef */
r = unhexmem(eq, &roothash_decoded, &roothash_decoded_size);
if (r < 0)
return log_error_errno(r, "Failed to decode RootHash= '%s': %m", eq);
if (roothash_decoded_size < sizeof(sd_id128_t))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "RootHash= '%s' is too short.", eq);
return bus_append_byte_array(m, field, roothash_decoded, roothash_decoded_size);
}
if (streq(field, "RootHash"))
return bus_append_root_hash(m, field, eq);
if (streq(field, "RootHashSignature")) {
_cleanup_free_ void *roothash_sig_decoded = NULL;