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| author | Yves-Alexis Perez <corsac@debian.org> | 2013-04-26 14:57:47 +0200 |
|---|---|---|
| committer | Yves-Alexis Perez <corsac@debian.org> | 2013-04-26 14:57:47 +0200 |
| commit | e8f63514e9b56f6a2f977a56438d59ccab45bdca (patch) | |
| tree | a0b54b11d647db27fa018214d2bf675dd350d466 /src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c | |
| parent | 196d9f518fd657d6560bfe3b05885d47ccd6bbd5 (diff) | |
| parent | 10e5fb2b9b2f27c83b3e5a1d048b158d5cf42a43 (diff) | |
| download | vyos-strongswan-e8f63514e9b56f6a2f977a56438d59ccab45bdca.tar.gz vyos-strongswan-e8f63514e9b56f6a2f977a56438d59ccab45bdca.zip | |
Merge tag 'upstream/5.0.3'
Upstream version 5.0.3
Diffstat (limited to 'src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c')
| -rw-r--r-- | src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c b/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c index 561e8529d..fd00c23af 100644 --- a/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c +++ b/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c @@ -292,7 +292,7 @@ void netlink_add_attribute(struct nlmsghdr *hdr, int rta_type, chunk_t data, { struct rtattr *rta; - if (NLMSG_ALIGN(hdr->nlmsg_len) + RTA_ALIGN(data.len) > buflen) + if (NLMSG_ALIGN(hdr->nlmsg_len) + RTA_LENGTH(data.len) > buflen) { DBG1(DBG_KNL, "unable to add attribute, buffer too small"); return; @@ -304,3 +304,24 @@ void netlink_add_attribute(struct nlmsghdr *hdr, int rta_type, chunk_t data, memcpy(RTA_DATA(rta), data.ptr, data.len); hdr->nlmsg_len = NLMSG_ALIGN(hdr->nlmsg_len) + rta->rta_len; } + +/** + * Described in header. + */ +void* netlink_reserve(struct nlmsghdr *hdr, int buflen, int type, int len) +{ + struct rtattr *rta; + + if (NLMSG_ALIGN(hdr->nlmsg_len) + RTA_LENGTH(len) > buflen) + { + DBG1(DBG_KNL, "unable to add attribute, buffer too small"); + return NULL; + } + + rta = ((void*)hdr) + NLMSG_ALIGN(hdr->nlmsg_len); + rta->rta_type = type; + rta->rta_len = RTA_LENGTH(len); + hdr->nlmsg_len = NLMSG_ALIGN(hdr->nlmsg_len) + rta->rta_len; + + return RTA_DATA(rta); +} |