Author: rmacklem
Date: Sun Dec 16 14:01:56 2012
New Revision: 244289
URL: http://svnweb.freebsd.org/changeset/base/244289
Log:
MFC: r243782
Add an nfssvc() option to the kernel for the new NFS client
which dumps out the actual options being used by an NFS mount.
This will be used to add a "-m" option to nfsstat(1).
Modified:
stable/9/sys/fs/nfs/nfs_var.h
stable/9/sys/fs/nfsclient/nfs_clport.c
stable/9/sys/fs/nfsclient/nfs_clvfsops.c
stable/9/sys/nfs/nfs_nfssvc.c
stable/9/sys/nfs/nfssvc.h
Directory Properties:
stable/9/sys/ (props changed)
stable/9/sys/fs/ (props changed)
Modified: stable/9/sys/fs/nfs/nfs_var.h
==============================================================================
--- stable/9/sys/fs/nfs/nfs_var.h Sun Dec 16 13:56:38 2012
(r244288)
+++ stable/9/sys/fs/nfs/nfs_var.h Sun Dec 16 14:01:56 2012
(r244289)
@@ -313,6 +313,7 @@ void nfsd_init(void);
int nfsd_checkrootexp(struct nfsrv_descript *);
/* nfs_clvfsops.c */
+void nfscl_retopts(struct nfsmount *, char *, size_t);
/* nfs_commonport.c */
int nfsrv_checksockseqnum(struct socket *, tcp_seq);
Modified: stable/9/sys/fs/nfsclient/nfs_clport.c
==============================================================================
--- stable/9/sys/fs/nfsclient/nfs_clport.c Sun Dec 16 13:56:38 2012
(r244288)
+++ stable/9/sys/fs/nfsclient/nfs_clport.c Sun Dec 16 14:01:56 2012
(r244289)
@@ -1207,6 +1207,9 @@ nfssvc_nfscl(struct thread *td, struct n
struct nfscbd_args nfscbdarg;
struct nfsd_nfscbd_args nfscbdarg2;
int error;
+ struct nameidata nd;
+ struct nfscl_dumpmntopts dumpmntopts;
+ char *buf;
if (uap->flag & NFSSVC_CBADDSOCK) {
error = copyin(uap->argp, (caddr_t)&nfscbdarg,
sizeof(nfscbdarg));
@@ -1239,6 +1242,28 @@ nfssvc_nfscl(struct thread *td, struct n
if (error)
return (error);
error = nfscbd_nfsd(td, &nfscbdarg2);
+ } else if (uap->flag & NFSSVC_DUMPMNTOPTS) {
+ error = copyin(uap->argp, &dumpmntopts, sizeof(dumpmntopts));
+ if (error == 0 && (dumpmntopts.ndmnt_blen < 256 ||
+ dumpmntopts.ndmnt_blen > 1024))
+ error = EINVAL;
+ if (error == 0)
+ error = nfsrv_lookupfilename(&nd,
+ dumpmntopts.ndmnt_fname, td);
+ if (error == 0 && strcmp(nd.ni_vp->v_mount->mnt_vfc->vfc_name,
+ "nfs") != 0) {
+ vput(nd.ni_vp);
+ error = EINVAL;
+ }
+ if (error == 0) {
+ buf = malloc(dumpmntopts.ndmnt_blen, M_TEMP, M_WAITOK);
+ nfscl_retopts(VFSTONFS(nd.ni_vp->v_mount), buf,
+ dumpmntopts.ndmnt_blen);
+ vput(nd.ni_vp);
+ error = copyout(buf, dumpmntopts.ndmnt_buf,
+ dumpmntopts.ndmnt_blen);
+ free(buf, M_TEMP);
+ }
} else {
error = EINVAL;
}
Modified: stable/9/sys/fs/nfsclient/nfs_clvfsops.c
==============================================================================
--- stable/9/sys/fs/nfsclient/nfs_clvfsops.c Sun Dec 16 13:56:38 2012
(r244288)
+++ stable/9/sys/fs/nfsclient/nfs_clvfsops.c Sun Dec 16 14:01:56 2012
(r244289)
@@ -1630,3 +1630,105 @@ nfs_getnlminfo(struct vnode *vp, uint8_t
}
}
+/*
+ * This function prints out an option name, based on the conditional
+ * argument.
+ */
+static __inline void nfscl_printopt(struct nfsmount *nmp, int testval,
+ char *opt, char **buf, size_t *blen)
+{
+ int len;
+
+ if (testval != 0 && *blen > strlen(opt)) {
+ len = snprintf(*buf, *blen, "%s", opt);
+ if (len != strlen(opt))
+ printf("EEK!!\n");
+ *buf += len;
+ *blen -= len;
+ }
+}
+
+/*
+ * This function printf out an options integer value.
+ */
+static __inline void nfscl_printoptval(struct nfsmount *nmp, int optval,
+ char *opt, char **buf, size_t *blen)
+{
+ int len;
+
+ if (*blen > strlen(opt) + 1) {
+ /* Could result in truncated output string. */
+ len = snprintf(*buf, *blen, "%s=%d", opt, optval);
+ if (len < *blen) {
+ *buf += len;
+ *blen -= len;
+ }
+ }
+}
+
+/*
+ * Load the option flags and values into the buffer.
+ */
+void nfscl_retopts(struct nfsmount *nmp, char *buffer, size_t buflen)
+{
+ char *buf;
+ size_t blen;
+
+ buf = buffer;
+ blen = buflen;
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NFSV4) != 0, "nfsv4", &buf,
+ &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NFSV3) != 0, "nfsv3", &buf,
+ &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0,
+ "nfsv2", &buf, &blen);
+ nfscl_printopt(nmp, nmp->nm_sotype == SOCK_STREAM, ",tcp", &buf, &blen);
+ nfscl_printopt(nmp, nmp->nm_sotype != SOCK_STREAM, ",udp", &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_RESVPORT) != 0, ",resvport",
+ &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCONN) != 0, ",noconn",
+ &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_SOFT) == 0, ",hard", &buf,
+ &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_SOFT) != 0, ",soft", &buf,
+ &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_INT) != 0, ",intr", &buf,
+ &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCTO) == 0, ",cto", &buf,
+ &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_NOCTO) != 0, ",nocto", &buf,
+ &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NOLOCKD | NFSMNT_NFSV4)) ==
+ 0, ",lockd", &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_NOLOCKD | NFSMNT_NFSV4)) ==
+ NFSMNT_NOLOCKD, ",nolockd", &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_RDIRPLUS) != 0, ",rdirplus",
+ &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & NFSMNT_KERB) == 0, ",sec=sys",
+ &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY |
+ NFSMNT_PRIVACY)) == NFSMNT_KERB, ",sec=krb5", &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY |
+ NFSMNT_PRIVACY)) == (NFSMNT_KERB | NFSMNT_INTEGRITY), ",sec=krb5i",
+ &buf, &blen);
+ nfscl_printopt(nmp, (nmp->nm_flag & (NFSMNT_KERB | NFSMNT_INTEGRITY |
+ NFSMNT_PRIVACY)) == (NFSMNT_KERB | NFSMNT_PRIVACY), ",sec=krb5p",
+ &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_acdirmin, ",acdirmin", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_acdirmax, ",acdirmax", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_acregmin, ",acregmin", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_acregmax, ",acregmax", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_nametimeo, ",nametimeo", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_negnametimeo, ",negnametimeo", &buf,
+ &blen);
+ nfscl_printoptval(nmp, nmp->nm_rsize, ",rsize", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_wsize, ",wsize", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_readdirsize, ",readdirsize", &buf,
+ &blen);
+ nfscl_printoptval(nmp, nmp->nm_readahead, ",readahead", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_wcommitsize, ",wcommitsize", &buf,
+ &blen);
+ nfscl_printoptval(nmp, nmp->nm_timeo, ",timeout", &buf, &blen);
+ nfscl_printoptval(nmp, nmp->nm_retry, ",retrans", &buf, &blen);
+}
+
Modified: stable/9/sys/nfs/nfs_nfssvc.c
==============================================================================
--- stable/9/sys/nfs/nfs_nfssvc.c Sun Dec 16 13:56:38 2012
(r244288)
+++ stable/9/sys/nfs/nfs_nfssvc.c Sun Dec 16 14:01:56 2012
(r244289)
@@ -91,8 +91,8 @@ sys_nfssvc(struct thread *td, struct nfs
if ((uap->flag & (NFSSVC_ADDSOCK | NFSSVC_OLDNFSD | NFSSVC_NFSD)) &&
nfsd_call_nfsserver != NULL)
error = (*nfsd_call_nfsserver)(td, uap);
- else if ((uap->flag & (NFSSVC_CBADDSOCK | NFSSVC_NFSCBD)) &&
- nfsd_call_nfscl != NULL)
+ else if ((uap->flag & (NFSSVC_CBADDSOCK | NFSSVC_NFSCBD |
+ NFSSVC_DUMPMNTOPTS)) && nfsd_call_nfscl != NULL)
error = (*nfsd_call_nfscl)(td, uap);
else if ((uap->flag & (NFSSVC_IDNAME | NFSSVC_GETSTATS |
NFSSVC_GSSDADDPORT | NFSSVC_GSSDADDFIRST | NFSSVC_GSSDDELETEALL |
Modified: stable/9/sys/nfs/nfssvc.h
==============================================================================
--- stable/9/sys/nfs/nfssvc.h Sun Dec 16 13:56:38 2012 (r244288)
+++ stable/9/sys/nfs/nfssvc.h Sun Dec 16 14:01:56 2012 (r244289)
@@ -68,5 +68,13 @@
#define NFSSVC_ZEROSRVSTATS 0x02000000 /* modifier for
GETSTATS */
#define NFSSVC_SUSPENDNFSD 0x04000000
#define NFSSVC_RESUMENFSD 0x08000000
+#define NFSSVC_DUMPMNTOPTS 0x10000000
+
+/* Argument structure for NFSSVC_DUMPMNTOPTS. */
+struct nfscl_dumpmntopts {
+ char *ndmnt_fname; /* File Name */
+ size_t ndmnt_blen; /* Size of buffer */
+ void *ndmnt_buf; /* and the buffer */
+};
#endif /* _NFS_NFSSVC_H */
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