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| author | Andi Shyti <andi.shyti@linux.intel.com> | 2026-08-22 14:19:12 +0200 |
|---|---|---|
| committer | Andi Shyti <andi.shyti@linux.intel.com> | 2026-08-22 14:19:34 +0200 |
| commit | d576a9561a1c80ae593539fb0ce0743d66825ac2 (patch) | |
| tree | 68f6de7e06b350afa42edeea2f7f33f086014597 /security/apparmor/crypto.c | |
| download | linux-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.c | 61 |
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; +} |
