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xfrm security context support 

In the Linux kernel, ipsec policy and SAs can include a
security context to support MAC networking. This feature
is often referred to as "labeled ipsec".

This patchset adds security context support into ip xfrm
such that a security context can be included when
add/delete/display SAs and policies with the ip command.
The user provides the security context when adding
SAs and policies. If a policy or SA contains a security
context, the changes allow the security context to be displayed.

For example,
ip xfrm state
src 10.1.1.6 dst 10.1.1.2
	proto esp spi 0x00000301 reqid 0 mode transport
	replay-window 0
	auth hmac(digest_null) 0x3078
	enc cbc(des3_ede) 0x6970763672656164796c6f676f33646573636263696e3031
	security context root:system_r:unconfined_t:s0

Please  let me know if all is ok with the patchset.
Thanks!!

regards,
Joy

Signed-off-by:  Joy Latten <latten@austin.ibm.com>
This commit is contained in:
Joy Latten 2011-02-02 17:31:39 -06:00 committed by Stephen Hemminger
parent db02608b6f
commit b2bb289a57
2 changed files with 30 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
ip/ipxfrm.c
View File

@ -850,6 +850,20 @@ void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf);
xfrm_stats_print(&xsinfo->stats, fp, buf);
}
if (tb[XFRMA_SEC_CTX]) {
struct xfrm_user_sec_ctx *sctx;
fprintf(fp, "\tsecurity context ");
if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
fprintf(fp, "(ERROR truncated)");
sctx = (struct xfrm_user_sec_ctx *)RTA_DATA(tb[XFRMA_SEC_CTX]);
fprintf(fp, "%s %s", (char *)(sctx + 1), _SL_);
}
}
void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
@ -862,6 +876,20 @@ void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title);
if (tb[XFRMA_SEC_CTX]) {
struct xfrm_user_sec_ctx *sctx;
fprintf(fp, "\tsecurity context ");
if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
fprintf(fp, "(ERROR truncated)");
sctx = (struct xfrm_user_sec_ctx *)RTA_DATA(tb[XFRMA_SEC_CTX]);
fprintf(fp, "%s ", (char *)(sctx + 1));
fprintf(fp, "%s", _SL_);
}
if (prefix)
STRBUF_CAT(buf, prefix);
STRBUF_CAT(buf, "\t");

3
ip/xfrm.h
View File

@ -154,5 +154,6 @@ int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp);
int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp);
int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
int *argcp, char ***argvp);
int xfrm_sctx_parse(char *ctxstr, char *context,
struct xfrm_user_sec_ctx *sctx);
#endif