diff options
Diffstat (limited to 'security/lsm_init.c')
| -rw-r--r-- | security/lsm_init.c | 57 |
1 files changed, 33 insertions, 24 deletions
diff --git a/security/lsm_init.c b/security/lsm_init.c index f0066857bd1a..6b1f8f18a43c 100644 --- a/security/lsm_init.c +++ b/security/lsm_init.c @@ -169,16 +169,22 @@ out: lsm_is_enabled(lsm) ? "enabled" : "disabled"); } -static void __init lsm_set_blob_size(int *need, int *lbs) +/** + * lsm_blob_size_update - Update the LSM blob size and offset information + * @sz_req: the requested additional blob size + * @sz_cur: the existing blob size + */ +static void __init lsm_blob_size_update(unsigned int *sz_req, + unsigned int *sz_cur) { - int offset; + unsigned int offset; - if (*need <= 0) + if (*sz_req == 0) return; - offset = ALIGN(*lbs, sizeof(void *)); - *lbs = offset + *need; - *need = offset; + offset = ALIGN(*sz_cur, sizeof(void *)); + *sz_cur = offset + *sz_req; + *sz_req = offset; } /** @@ -193,27 +199,30 @@ static void __init lsm_prepare(struct lsm_info *lsm) return; /* Register the LSM blob sizes. */ - lsm_set_blob_size(&blobs->lbs_cred, &blob_sizes.lbs_cred); - lsm_set_blob_size(&blobs->lbs_file, &blob_sizes.lbs_file); - lsm_set_blob_size(&blobs->lbs_ib, &blob_sizes.lbs_ib); + blobs = lsm->blobs; + lsm_blob_size_update(&blobs->lbs_cred, &blob_sizes.lbs_cred); + lsm_blob_size_update(&blobs->lbs_file, &blob_sizes.lbs_file); + lsm_blob_size_update(&blobs->lbs_ib, &blob_sizes.lbs_ib); /* inode blob gets an rcu_head in addition to LSM blobs. */ if (blobs->lbs_inode && blob_sizes.lbs_inode == 0) blob_sizes.lbs_inode = sizeof(struct rcu_head); - lsm_set_blob_size(&blobs->lbs_inode, &blob_sizes.lbs_inode); - lsm_set_blob_size(&blobs->lbs_ipc, &blob_sizes.lbs_ipc); - lsm_set_blob_size(&blobs->lbs_key, &blob_sizes.lbs_key); - lsm_set_blob_size(&blobs->lbs_msg_msg, &blob_sizes.lbs_msg_msg); - lsm_set_blob_size(&blobs->lbs_perf_event, &blob_sizes.lbs_perf_event); - lsm_set_blob_size(&blobs->lbs_sock, &blob_sizes.lbs_sock); - lsm_set_blob_size(&blobs->lbs_superblock, &blob_sizes.lbs_superblock); - lsm_set_blob_size(&blobs->lbs_task, &blob_sizes.lbs_task); - lsm_set_blob_size(&blobs->lbs_tun_dev, &blob_sizes.lbs_tun_dev); - lsm_set_blob_size(&blobs->lbs_xattr_count, - &blob_sizes.lbs_xattr_count); - lsm_set_blob_size(&blobs->lbs_bdev, &blob_sizes.lbs_bdev); - lsm_set_blob_size(&blobs->lbs_bpf_map, &blob_sizes.lbs_bpf_map); - lsm_set_blob_size(&blobs->lbs_bpf_prog, &blob_sizes.lbs_bpf_prog); - lsm_set_blob_size(&blobs->lbs_bpf_token, &blob_sizes.lbs_bpf_token); + lsm_blob_size_update(&blobs->lbs_inode, &blob_sizes.lbs_inode); + lsm_blob_size_update(&blobs->lbs_ipc, &blob_sizes.lbs_ipc); + lsm_blob_size_update(&blobs->lbs_key, &blob_sizes.lbs_key); + lsm_blob_size_update(&blobs->lbs_msg_msg, &blob_sizes.lbs_msg_msg); + lsm_blob_size_update(&blobs->lbs_perf_event, + &blob_sizes.lbs_perf_event); + lsm_blob_size_update(&blobs->lbs_sock, &blob_sizes.lbs_sock); + lsm_blob_size_update(&blobs->lbs_superblock, + &blob_sizes.lbs_superblock); + lsm_blob_size_update(&blobs->lbs_task, &blob_sizes.lbs_task); + lsm_blob_size_update(&blobs->lbs_tun_dev, &blob_sizes.lbs_tun_dev); + lsm_blob_size_update(&blobs->lbs_xattr_count, + &blob_sizes.lbs_xattr_count); + lsm_blob_size_update(&blobs->lbs_bdev, &blob_sizes.lbs_bdev); + lsm_blob_size_update(&blobs->lbs_bpf_map, &blob_sizes.lbs_bpf_map); + lsm_blob_size_update(&blobs->lbs_bpf_prog, &blob_sizes.lbs_bpf_prog); + lsm_blob_size_update(&blobs->lbs_bpf_token, &blob_sizes.lbs_bpf_token); } /* Initialize a given LSM, if it is enabled. */ |