Date: Tue, 6 Jul 2010 21:26:16 GMT From: Efstratios Karatzas <gpf@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 180565 for review Message-ID: <201007062126.o66LQGPT075242@repoman.freebsd.org>
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http://p4web.freebsd.org/@@180565?ac=10 Change 180565 by gpf@gpf_desktop on 2010/07/06 21:25:27 - audit nfs protocol used in each rpc that we are servicing. While constructing the bsm record, I use au_to_text() for the protocol, instead of creating a new method for a new token type - not sure this is what we want. Affected files ... .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/fs/nfsserver/nfs_nfsdkrpc.c#4 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/fs/nfsserver/nfs_nfsdserv.c#9 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/fs/nfsserver/nfs_nfsdsocket.c#12 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/nfsserver/nfs.h#2 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/nfsserver/nfs_srvkrpc.c#7 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit.h#7 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit_arg.c#3 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit_bsm.c#13 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit_bsm_klib.c#2 edit .. //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit_private.h#4 edit Differences ... ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/fs/nfsserver/nfs_nfsdkrpc.c#4 (text+ko) ==== @@ -109,6 +109,7 @@ struct nfsrv_descript nd; struct nfsrvcache *rp = NULL; int cacherep, credflavor; + int nfsprot; memset(&nd, 0, sizeof(nd)); if (rqst->rq_vers == NFS_VER2) { @@ -234,8 +235,12 @@ cacherep = nfs_proc(&nd, rqst->rq_xid, xprt->xp_socket, xprt->xp_sockref, &rp); } else { - AUDIT_NFS_ENTER(NFSPROC_NULL, nd.nd_cred, curthread, ND_NFSV3); - AUDIT_NFS_EXIT(0, curthread); + nfsprot = nd.nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4); + AUDIT_NFS_ENTER(NFSPROC_NULL, nd.nd_cred, curthread, nfsprot); + AUDIT_ARG_PROTOCOL(nfsprot); + if (nd.nd_nam != NULL) + AUDIT_ARG_SOCKADDR_IN((struct sockaddr_in *)nd.nd_nam); + AUDIT_NFS_EXIT(0, curthread); NFSMGET(nd.nd_mreq); nd.nd_mreq->m_len = 0; cacherep = RC_REPLY; ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/fs/nfsserver/nfs_nfsdserv.c#9 (text+ko) ==== @@ -1083,6 +1083,7 @@ NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); vtyp = nfsv34tov_type(*tl); nfs4type = fxdr_unsigned(nfstype, *tl); + /* lalala */ switch (nfs4type) { case NFLNK: error = nfsvno_getsymlink(nd, &nva, p, &pathcp, ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/fs/nfsserver/nfs_nfsdsocket.c#12 (text+ko) ==== @@ -437,13 +437,11 @@ printf("compound rpc exit\n"); } else { printf("non compound rpc %d\n", nd->nd_procnum); - if (nd->nd_flag & ND_NFSV2) - nfsprot = ND_NFSV2; - else - nfsprot = ND_NFSV3; + nfsprot = nd->nd_flag & (ND_NFSV2 | ND_NFSV3); AUDIT_NFS_ENTER(nd->nd_procnum, nd->nd_cred, curthread, nfsprot); if (nd->nd_nam != NULL) AUDIT_ARG_SOCKADDR_IN((struct sockaddr_in *)nd->nd_nam); + AUDIT_ARG_PROTOCOL(nfsprot); if (nfs_retfh[nd->nd_procnum] == 1) { if (vp) NFSVOPUNLOCK(vp, 0, p); @@ -741,6 +739,7 @@ AUDIT_NFS_ENTER(op, nd->nd_cred, curthread, ND_NFSV4); if (nd->nd_nam != NULL) AUDIT_ARG_SOCKADDR_IN((struct sockaddr_in *)nd->nd_nam); + AUDIT_ARG_PROTOCOL(ND_NFSV4); switch (op) { /* xxx gpf dbg */ printf("op = %d\n", op); @@ -1036,6 +1035,7 @@ } break; } + /* lalala */ error = (*(nfsrv4_ops0[op]))(nd, isdgram, vp, p, &vpnes); if (nfsv4_opflag[op].modifyfs) ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/nfsserver/nfs.h#2 (text+ko) ==== @@ -195,6 +195,7 @@ }; /* Bits for "nd_flag" */ +#define ND_NFSV2 0x04 #define ND_NFSV3 0x08 /* ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/nfsserver/nfs_srvkrpc.c#7 (text+ko) ==== @@ -256,6 +256,7 @@ struct nfsrv_descript nd; struct mbuf *mreq, *mrep; int error; + int protocol; struct thread *td = curthread; if (rqst->rq_vers == NFS_VER2) { @@ -354,6 +355,11 @@ AUDIT_NFS_ENTER(procnum, nd.nd_cr, td, ND_NFSV3); AUDIT_ARG_SOCKADDR_IN((struct sockaddr_in *)nd.nd_nam); + if (flag) + protocol = ND_NFSV3; + else + protocol = ND_NFSV2; + AUDIT_ARG_PROTOCOL(protocol); error = proc(&nd, NULL, &mrep); AUDIT_NFS_EXIT(nd.nd_repstat, td); ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit.h#7 (text) ==== @@ -128,6 +128,7 @@ void audit_proc_coredump(struct thread *td, char *path, int errcode); void audit_thread_alloc(struct thread *td); void audit_thread_free(struct thread *td); +void audit_arg_protocol(int protocol); /* * Define macros to wrap the audit_arg_* calls by checking the global @@ -235,6 +236,11 @@ audit_arg_process((p)); \ } while (0) +#define AUDIT_ARG_PROTOCOL(prot) do{ \ + if (AUDITING_TD(curthread)) \ + audit_arg_protocol((prot)); \ +} while (0) + #define AUDIT_ARG_RGID(rgid) do { \ if (AUDITING_TD(curthread)) \ audit_arg_rgid((rgid)); \ ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit_arg.c#3 (text) ==== @@ -915,3 +915,17 @@ VFS_UNLOCK_GIANT(vfslocked); fdrop(fp, td); } + +/* Keeping track of NFS protocols used in NFS RPCs */ +void +audit_arg_protocol(int protocol) +{ + struct kaudit_record *ar; + + ar = currecord(); + if (ar == NULL) + return; + + ar->k_ar.ar_arg_protocol = protocol; + ARG_SET_VALID(ar, ARG_PROTOCOL); +} ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit_bsm.c#13 (text) ==== @@ -1608,6 +1608,11 @@ tok = au_to_text(ar->ar_arg_text); kau_write(rec, tok); } + if (ARG_IS_VALID(kar, ARG_PROTOCOL)) { + tok = au_to_text(audit_protocol_to_text(ar->ar_arg_protocol)); + kau_write(rec, tok); + } + break; case AUE_NFS_READ: @@ -1621,6 +1626,10 @@ tok = au_to_text(ar->ar_arg_text); kau_write(rec, tok); } + if (ARG_IS_VALID(kar, ARG_PROTOCOL)) { + tok = au_to_text(audit_protocol_to_text(ar->ar_arg_protocol)); + kau_write(rec, tok); + } break; case AUE_NFS_NOOP: @@ -1629,6 +1638,10 @@ tok = au_to_text(ar->ar_arg_text); kau_write(rec, tok); } + if (ARG_IS_VALID(kar, ARG_PROTOCOL)) { + tok = au_to_text(audit_protocol_to_text(ar->ar_arg_protocol)); + kau_write(rec, tok); + } break; case AUE_NFS_SYMLINK: @@ -1636,6 +1649,10 @@ tok = au_to_arg32(3, "mode", ar->ar_arg_mode); kau_write(rec, tok); } + if (ARG_IS_VALID(kar, ARG_PROTOCOL)) { + tok = au_to_text(audit_protocol_to_text(ar->ar_arg_protocol)); + kau_write(rec, tok); + } /* FALLTHROUGH */ case AUE_NFS_LINK: @@ -1646,6 +1663,10 @@ tok = au_to_text(ar->ar_arg_text); kau_write(rec, tok); } + if (ARG_IS_VALID(kar, ARG_PROTOCOL)) { + tok = au_to_text(audit_protocol_to_text(ar->ar_arg_protocol)); + kau_write(rec, tok); + } break; /* XXXgpf: temporary fallthrough for nfsv4 events */ @@ -1661,6 +1682,10 @@ tok = au_to_text(ar->ar_arg_text); kau_write(rec, tok); } + if (ARG_IS_VALID(kar, ARG_PROTOCOL)) { + tok = au_to_text(audit_protocol_to_text(ar->ar_arg_protocol)); + kau_write(rec, tok); + } break; /* XXXgpf: temporary fallthrough for nfsv4 events */ @@ -1685,6 +1710,10 @@ tok = au_to_text(ar->ar_arg_text); kau_write(rec, tok); } + if (ARG_IS_VALID(kar, ARG_PROTOCOL)) { + tok = au_to_text(audit_protocol_to_text(ar->ar_arg_protocol)); + kau_write(rec, tok); + } break; case AUE_WAIT4: ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit_bsm_klib.c#2 (text) ==== @@ -554,3 +554,35 @@ } sbuf_finish(&sbf); } + +char * +audit_protocol_to_text(int protocol) +{ + char *protocols[] = { + "NFSv2", + "NFSv3", + "NFSv4", + "Unknown Protocol" + }; + char *prot; + + switch (protocol) { + case ND_NFSV2: + prot = protocols[0]; + break; + + case ND_NFSV3: + prot = protocols[1]; + break; + + case ND_NFSV4: + prot = protocols[2]; + break; + + default: + prot = protocols[3]; + break; + } + + return prot; +} ==== //depot/projects/soc2010/gpf_audit/freebsd/src/sys/security/audit/audit_private.h#4 (text) ==== @@ -229,6 +229,7 @@ int ar_arg_exitstatus; int ar_arg_exitretval; struct sockaddr_storage ar_arg_sockaddr; + u_int ar_arg_protocol; }; /* @@ -288,6 +289,8 @@ #define ARG_ENVV 0x0002000000000000ULL #define ARG_ATFD1 0x0004000000000000ULL #define ARG_ATFD2 0x0008000000000000ULL +#define ARG_FTYPE 0x0010000000000000ULL +#define ARG_PROTOCOL 0x0020000000000000ULL #define ARG_NONE 0x0000000000000000ULL #define ARG_ALL 0xFFFFFFFFFFFFFFFFULL @@ -397,6 +400,7 @@ au_event_t audit_semctl_to_event(int cmr); void audit_canon_path(struct thread *td, char *path, char *cpath); au_event_t auditon_command_event(int cmd); +char * audit_protocol_to_text(int protocol); /* * Audit trigger events notify user space of kernel audit conditions
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