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authorAndi Shyti <andi.shyti@linux.intel.com>2026-08-22 14:19:12 +0200
committerAndi Shyti <andi.shyti@linux.intel.com>2026-08-22 14:19:34 +0200
commitd576a9561a1c80ae593539fb0ce0743d66825ac2 (patch)
tree68f6de7e06b350afa42edeea2f7f33f086014597 /security/apparmor/crypto.c
downloadlinux-stable-d576a9561a1c80ae593539fb0ce0743d66825ac2.tar.gz
linux-stable-d576a9561a1c80ae593539fb0ce0743d66825ac2.zip
Merge tag 'rust-i2c-for-7.3' into i2c/i2cgrafted
i2c: rust: mark I2cAdapter methods as inline A single cleanup for the Rust I2C abstractions, targeting 7.3. `I2cAdapter::get`, `inc_ref`, and `dec_ref` are trivial wrappers around `i2c_get_adapter`/`i2c_put_adapter` and were showing up as their own symbols in the build. Mark them `#[inline]` so they get folded into their callers instead. Signed-off-by: Igor Korotin <igor.korotin@linux.dev> * tag 'rust-i2c-for-7.3': i2c: rust: mark I2cAdapter methods as inline
Diffstat (limited to 'security/apparmor/crypto.c')
-rw-r--r--security/apparmor/crypto.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/security/apparmor/crypto.c b/security/apparmor/crypto.c
new file mode 100644
index 000000000..d8a7bde94
--- /dev/null
+++ b/security/apparmor/crypto.c
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * AppArmor security module
+ *
+ * This file contains AppArmor policy loading interface function definitions.
+ *
+ * Copyright 2013 Canonical Ltd.
+ *
+ * Fns to provide a checksum of policy that has been loaded this can be
+ * compared to userspace policy compiles to check loaded policy is what
+ * it should be.
+ */
+
+#include <crypto/sha2.h>
+
+#include "include/apparmor.h"
+#include "include/crypto.h"
+
+unsigned int aa_hash_size(void)
+{
+ return SHA256_DIGEST_SIZE;
+}
+
+char *aa_calc_hash(void *data, size_t len)
+{
+ char *hash;
+
+ hash = kzalloc(SHA256_DIGEST_SIZE, GFP_KERNEL);
+ if (!hash)
+ return ERR_PTR(-ENOMEM);
+
+ sha256(data, len, hash);
+ return hash;
+}
+
+int aa_calc_profile_hash(struct aa_profile *profile, u32 version, void *start,
+ size_t len)
+{
+ struct sha256_ctx sctx;
+ __le32 le32_version = cpu_to_le32(version);
+
+ if (!aa_g_hash_policy)
+ return 0;
+
+ profile->hash = kzalloc(SHA256_DIGEST_SIZE, GFP_KERNEL);
+ if (!profile->hash)
+ return -ENOMEM;
+
+ sha256_init(&sctx);
+ sha256_update(&sctx, (u8 *)&le32_version, 4);
+ sha256_update(&sctx, (u8 *)start, len);
+ sha256_final(&sctx, profile->hash);
+ return 0;
+}
+
+int __init init_profile_hash(void)
+{
+ if (apparmor_initialized)
+ aa_info_message("AppArmor sha256 policy hashing enabled");
+ return 0;
+}