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Use v3 protocol by default if it is supported by the server. Allow the
user to force v2 protocol even if the server supports v3. Obtained from: NetBSD but with a slightly different implementation
This commit is contained in:
Doug Rabson
parent
18cab10cb3
commit
2cd1c32cf8
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=25004
@ -31,7 +31,7 @@
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.\"
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.\" @(#)mount_nfs.8 8.3 (Berkeley) 3/29/95
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.\"
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.\" $Id: mount_nfs.8,v 1.7 1997/02/22 14:32:47 peter Exp $
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.\" $Id: mount_nfs.8,v 1.8 1997/03/11 12:31:54 peter Exp $
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.\""
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.Dd March 29, 1995
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.Dt MOUNT_NFS 8
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@ -41,7 +41,7 @@
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.Nd mount nfs file systems
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.Sh SYNOPSIS
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.Nm mount_nfs
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.Op Fl 3KPTUbcdilqs
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.Op Fl 23KPTUbcdilqs
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.Op Fl D Ar deadthresh
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.Op Fl I Ar readdirsize
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.Op Fl L Ar leaseterm
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@ -72,8 +72,11 @@ Appendix I.
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.Pp
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The options are:
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.Bl -tag -width indent
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.It Fl 2
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Use the NFS Version 2 protocol (the default is to try version 3 first
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then version 2).
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.It Fl 3
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Use the NFS Version 3 protocol (Version 2 is the default).
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Use the NFS Version 3 protocol.
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.It Fl D
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Used with NQNFS to set the
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.Dq "dead server threshold"
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@ -200,6 +203,9 @@ Same as
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.It kerb
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Same as
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.Fl K .
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.It nfsv2
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Same as
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.Fl 2 .
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.It nfsv3
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Same as
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.Fl 3 .
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@ -45,7 +45,7 @@ static char copyright[] =
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static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95";
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*/
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static const char rcsid[] =
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"$Id: mount_nfs.c,v 1.19 1997/04/01 17:20:17 guido Exp $";
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"$Id: mount_nfs.c,v 1.20 1997/04/02 11:30:44 dfr Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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@ -105,6 +105,7 @@ static const char rcsid[] =
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#define ALTF_SOFT 0x800
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#define ALTF_TCP 0x1000
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#define ALTF_PORT 0x2000
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#define ALTF_NFSV2 0x4000
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struct mntopt mopts[] = {
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MOPT_STDOPTS,
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@ -128,6 +129,7 @@ struct mntopt mopts[] = {
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{ "soft", 0, ALTF_SOFT, 1 },
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{ "tcp", 0, ALTF_TCP, 1 },
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{ "port=", 0, ALTF_PORT, 1 },
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{ "nfsv2", 0, ALTF_NFSV2, 1 },
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{ NULL }
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};
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@ -167,6 +169,11 @@ int opflags = 0;
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int nfsproto = IPPROTO_UDP;
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int mnttcp_ok = 1;
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u_short port_no = 0;
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enum {
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ANY,
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V2,
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V3
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} mountmode = ANY;
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#ifdef NFSKERB
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char inst[INST_SZ];
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@ -221,7 +228,6 @@ setflags(int* altflags, int* nfsflags, int dir)
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#ifdef NFSKERB
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F(KERB);
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#endif
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F(NFSV3);
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F(RDIRPLUS);
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F(RESVPORT);
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F(NQNFS);
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@ -262,10 +268,13 @@ main(argc, argv)
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nfsargs = nfsdefargs;
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nfsargsp = &nfsargs;
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while ((c = getopt(argc, argv,
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"3a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != -1)
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"23a:bcdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:U")) != -1)
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switch (c) {
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case '2':
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mountmode = V2;
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break;
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case '3':
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nfsargsp->flags |= NFSMNT_NFSV3;
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mountmode = V3;
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break;
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case 'a':
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num = strtol(optarg, &p, 10);
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@ -334,6 +343,10 @@ main(argc, argv)
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case 'o':
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altflags = 0;
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setflags(&altflags, &nfsargsp->flags, TRUE);
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if (mountmode == V2)
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altflags |= ALTF_NFSV2;
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else if (mountmode == V3)
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altflags |= ALTF_NFSV3;
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getmntopts(optarg, mopts, &mntflags, &altflags);
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setflags(&altflags, &nfsargsp->flags, FALSE);
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/*
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@ -354,6 +367,11 @@ main(argc, argv)
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}
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if(altflags & ALTF_PORT)
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port_no = atoi(strstr(optarg, "port=") + 5);
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mountmode = ANY;
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if(altflags & ALTF_NFSV2)
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mountmode = V2;
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if(altflags & ALTF_NFSV3)
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mountmode = V3;
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break;
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case 'P':
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nfsargsp->flags |= NFSMNT_RESVPORT;
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@ -364,7 +382,8 @@ main(argc, argv)
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break;
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#endif
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case 'q':
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nfsargsp->flags |= (NFSMNT_NQNFS | NFSMNT_NFSV3);
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mountmode = V3;
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nfsargsp->flags |= NFSMNT_NQNFS;
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break;
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case 'R':
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num = strtol(optarg, &p, 10);
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@ -564,7 +583,7 @@ getnfsargs(spec, nfsargsp)
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#endif
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struct timeval pertry, try;
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enum clnt_stat clnt_stat;
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int so = RPC_ANYSOCK, i, nfsvers, mntvers;
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int so = RPC_ANYSOCK, i, nfsvers, mntvers, orgcnt;
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char *hostp, *delimp;
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#ifdef NFSKERB
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char *cp;
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@ -645,12 +664,16 @@ getnfsargs(spec, nfsargsp)
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}
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#endif /* NFSKERB */
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if (nfsargsp->flags & NFSMNT_NFSV3) {
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orgcnt = retrycnt;
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tryagain:
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if (mountmode == ANY || mountmode == V3) {
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nfsvers = 3;
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mntvers = 3;
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nfsargsp->flags |= NFSMNT_NFSV3;
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} else {
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nfsvers = 2;
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mntvers = 1;
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nfsargsp->flags &= ~NFSMNT_NFSV3;
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}
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nfhret.stat = EACCES; /* Mark not yet successful */
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while (retrycnt > 0) {
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@ -686,6 +709,15 @@ getnfsargs(spec, nfsargsp)
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clnt_stat = clnt_call(clp, RPCMNT_MOUNT,
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xdr_dir, spec, xdr_fh, &nfhret, try);
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if (clnt_stat != RPC_SUCCESS) {
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if (clnt_stat == RPC_PROGVERSMISMATCH) {
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if (mountmode == ANY) {
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mountmode = V2;
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goto tryagain;
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} else {
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errx(1, "%s",
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clnt_sperror(clp, "MNT RPC"));
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}
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}
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if ((opflags & ISBGRND) == 0)
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warnx("%s", clnt_sperror(clp,
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"bad MNT RPC"));
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@ -794,7 +826,7 @@ void
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usage()
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{
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(void)fprintf(stderr, "\
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usage: mount_nfs [-3KPTUbcdilqs] [-D deadthresh] [-I readdirsize]\n\
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usage: mount_nfs [-23KPTUbcdilqs] [-D deadthresh] [-I readdirsize]\n\
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[-L leaseterm] [-R retrycnt] [-a maxreadahead] [-g maxgroups]\n\
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[-m realm] [-o options] [-r readsize] [-t timeout] [-w writesize]\n\
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[-x retrans] rhost:path node\n");
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