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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-09-03 17:01:44 (GMT) |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-09-03 17:01:44 (GMT) |
commit | 01b944fe1cd4e21a2a9ed51adbdbafe2d5e905ba (patch) | |
tree | 85f506cf9fce3d8fd47cf624dd8698472bffc13f /crypto/af_alg.c | |
parent | e51e38494a8ecc18650efb0c840600637891de2c (diff) | |
parent | 58f1eae48e5372200553de07b5ecc7574803ee91 (diff) | |
download | linux-01b944fe1cd4e21a2a9ed51adbdbafe2d5e905ba.tar.xz |
Merge branch 'next' into for-linus
Prepare first round of input updates for 4.3 merge window.
Diffstat (limited to 'crypto/af_alg.c')
-rw-r--r-- | crypto/af_alg.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c index 7f8b7edc..a8e7aa3 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -127,6 +127,7 @@ EXPORT_SYMBOL_GPL(af_alg_release); static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) { + const u32 forbidden = CRYPTO_ALG_INTERNAL; struct sock *sk = sock->sk; struct alg_sock *ask = alg_sk(sk); struct sockaddr_alg *sa = (void *)uaddr; @@ -151,7 +152,9 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) if (IS_ERR(type)) return PTR_ERR(type); - private = type->bind(sa->salg_name, sa->salg_feat, sa->salg_mask); + private = type->bind(sa->salg_name, + sa->salg_feat & ~forbidden, + sa->salg_mask & ~forbidden); if (IS_ERR(private)) { module_put(type->owner); return PTR_ERR(private); @@ -244,7 +247,7 @@ int af_alg_accept(struct sock *sk, struct socket *newsock) if (!type) goto unlock; - sk2 = sk_alloc(sock_net(sk), PF_ALG, GFP_KERNEL, &alg_proto); + sk2 = sk_alloc(sock_net(sk), PF_ALG, GFP_KERNEL, &alg_proto, 0); err = -ENOMEM; if (!sk2) goto unlock; @@ -324,7 +327,7 @@ static int alg_create(struct net *net, struct socket *sock, int protocol, return -EPROTONOSUPPORT; err = -ENOMEM; - sk = sk_alloc(net, PF_ALG, GFP_KERNEL, &alg_proto); + sk = sk_alloc(net, PF_ALG, GFP_KERNEL, &alg_proto, kern); if (!sk) goto out; @@ -358,8 +361,8 @@ int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len) npages = (off + n + PAGE_SIZE - 1) >> PAGE_SHIFT; if (WARN_ON(npages == 0)) return -EINVAL; - - sg_init_table(sgl->sg, npages); + /* Add one extra for linking */ + sg_init_table(sgl->sg, npages + 1); for (i = 0, len = n; i < npages; i++) { int plen = min_t(int, len, PAGE_SIZE - off); @@ -369,18 +372,26 @@ int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len) off = 0; len -= plen; } + sg_mark_end(sgl->sg + npages - 1); + sgl->npages = npages; + return n; } EXPORT_SYMBOL_GPL(af_alg_make_sg); +void af_alg_link_sg(struct af_alg_sgl *sgl_prev, struct af_alg_sgl *sgl_new) +{ + sg_unmark_end(sgl_prev->sg + sgl_prev->npages - 1); + sg_chain(sgl_prev->sg, sgl_prev->npages + 1, sgl_new->sg); +} +EXPORT_SYMBOL_GPL(af_alg_link_sg); + void af_alg_free_sg(struct af_alg_sgl *sgl) { int i; - i = 0; - do { + for (i = 0; i < sgl->npages; i++) put_page(sgl->pages[i]); - } while (!sg_is_last(sgl->sg + (i++))); } EXPORT_SYMBOL_GPL(af_alg_free_sg); |