]> git.decadent.org.uk Git - nfs-utils.git/blobdiff - support/nfs/exports.c
Make CROSSMNT distinct from NOHIDE
[nfs-utils.git] / support / nfs / exports.c
index 0dce25ff9291dd28d0c4b608c50fe1cc289f9d62..dfb241e6fb498f459ea5d7b7e31e576a2dd41fd5 100644 (file)
@@ -22,6 +22,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <unistd.h>
+#include <errno.h>
 #include "nfslib.h"
 #include "exportfs.h"
 #include "xmalloc.h"
@@ -31,6 +32,8 @@
 #define EXPORT_DEFAULT_FLAGS   \
   (NFSEXP_READONLY|NFSEXP_ROOTSQUASH|NFSEXP_GATHERED_WRITES)
 
+int export_errno;
+
 static char    *efname = NULL;
 static XFILE   *efp = NULL;
 static int     first;
@@ -39,7 +42,7 @@ static int    *squids = NULL, nsquids = 0,
 
 static int     getexport(char *exp, int len);
 static int     getpath(char *path, int len);
-static int     parseopts(char *cp, struct exportent *ep);
+static int     parseopts(char *cp, struct exportent *ep, int warn);
 static int     parsesquash(char *list, int **idp, int *lenp, char **ep);
 static int     parsenum(char **cpp);
 static int     parsemaptype(char *type);
@@ -61,7 +64,7 @@ setexportent(char *fname, char *type)
 }
 
 struct exportent *
-getexportent(int fromkernel)
+getexportent(int fromkernel, int fromexports)
 {
        static struct exportent ee;
        char            exp[512];
@@ -101,6 +104,7 @@ getexportent(int fromkernel)
        }
        if (ok < 0) {
                xlog(L_ERROR, "expected client(options...)");
+               export_errno = EINVAL;
                return NULL;
        }
        first = 0;
@@ -114,6 +118,7 @@ getexportent(int fromkernel)
                *opt++ = '\0';
                if (!(sp = strchr(opt, ')')) || sp[1] != '\0') {
                        syntaxerr("bad option list");
+                       export_errno = EINVAL;
                        return NULL;
                }
                *sp = '\0';
@@ -122,12 +127,13 @@ getexportent(int fromkernel)
        }
        if (strlen(exp) >= sizeof(ee.e_hostname)) {
                syntaxerr("client name too long");
+               export_errno = EINVAL;
                return NULL;
        }
        strncpy(ee.e_hostname, exp, sizeof (ee.e_hostname) - 1);
        ee.e_hostname[sizeof (ee.e_hostname) - 1] = '\0';
 
-       if (parseopts(opt, &ee) < 0)
+       if (parseopts(opt, &ee, fromexports) < 0)
                return NULL;
 
        /* resolve symlinks */
@@ -164,8 +170,10 @@ putexportent(struct exportent *ep)
        fprintf(fp, "%ssync,", (ep->e_flags & NFSEXP_ASYNC)? "a" : "");
        fprintf(fp, "%swdelay,", (ep->e_flags & NFSEXP_GATHERED_WRITES)?
                                "" : "no_");
-       fprintf(fp, "%shide,", (ep->e_flags & NFSEXP_CROSSMNT)?
+       fprintf(fp, "%shide,", (ep->e_flags & NFSEXP_NOHIDE)?
                                "no" : "");
+       fprintf(fp, "%scrossmnt,", (ep->e_flags & NFSEXP_CROSSMNT)?
+                               "" : "no");
        fprintf(fp, "%ssecure,", (ep->e_flags & NFSEXP_INSECURE_PORT)?
                                "in" : "");
        fprintf(fp, "%sroot_squash,", (ep->e_flags & NFSEXP_ROOTSQUASH)?
@@ -176,7 +184,9 @@ putexportent(struct exportent *ep)
                "no_" : "");
        fprintf(fp, "%ssecure_locks,", (ep->e_flags & NFSEXP_NOAUTHNLM)?
                "in" : "");
-
+       if (ep->e_flags & NFSEXP_FSID) {
+               fprintf(fp, "fsid=%d,", ep->e_fsid);
+       }
        fprintf(fp, "mapping=");
        switch (ep->e_maptype) {
        case CLE_MAP_IDENT:
@@ -267,7 +277,7 @@ mkexportent(char *hname, char *path, char *options)
        ee.e_path[sizeof (ee.e_path) - 1] = '\0';
        strncpy (ee.m_path, ee.e_path, sizeof (ee.m_path) - 1);
        ee.m_path [sizeof (ee.m_path) - 1] = '\0';
-       if (parseopts(options, &ee) < 0)
+       if (parseopts(options, &ee, 0) < 0)
                return NULL;
        return &ee;
 }
@@ -275,7 +285,7 @@ mkexportent(char *hname, char *path, char *options)
 int
 updateexportent(struct exportent *eep, char *options)
 {
-       if (parseopts(options, eep) < 0)
+       if (parseopts(options, eep, 0) < 0)
                return 0;
        return 1;
 }
@@ -284,9 +294,11 @@ updateexportent(struct exportent *eep, char *options)
  * Parse option string pointed to by cp and set mount options accordingly.
  */
 static int
-parseopts(char *cp, struct exportent *ep)
+parseopts(char *cp, struct exportent *ep, int warn)
 {
        int     had_sync_opt = 0;
+       char    *flname = efname?efname:"command line";
+       int     flline = efp?efp->x_line:0;
 
        squids = ep->e_squids; nsquids = ep->e_nsquids;
        sqgids = ep->e_sqgids; nsqgids = ep->e_nsqgids;
@@ -323,12 +335,12 @@ parseopts(char *cp, struct exportent *ep)
                        had_sync_opt = 1;
                        ep->e_flags |= NFSEXP_ASYNC;
                } else if (!strcmp(opt, "nohide"))
-                       ep->e_flags |= NFSEXP_CROSSMNT;
+                       ep->e_flags |= NFSEXP_NOHIDE;
                else if (!strcmp(opt, "hide"))
-                       ep->e_flags &= ~NFSEXP_CROSSMNT;
-               else if (!strcmp(opt, "crossmnt"))              /* old style */
+                       ep->e_flags &= ~NFSEXP_NOHIDE;
+               else if (!strcmp(opt, "crossmnt"))
                        ep->e_flags |= NFSEXP_CROSSMNT;
-               else if (!strcmp(opt, "nocrossmnt"))            /* old style */
+               else if (!strcmp(opt, "nocrossmnt"))
                        ep->e_flags &= ~NFSEXP_CROSSMNT;
                else if (!strcmp(opt, "wdelay"))
                        ep->e_flags |= NFSEXP_GATHERED_WRITES;
@@ -360,26 +372,47 @@ parseopts(char *cp, struct exportent *ep)
                        ep->e_maptype = CLE_MAP_IDENT;
                else if (strcmp(opt, "map_daemon") == 0)        /* old style */
                        ep->e_maptype = CLE_MAP_UGIDD;
-               else if (strncmp(opt, "anonuid=", 8) == 0)
-                       ep->e_anonuid = atoi(opt+8);
-               else if (strncmp(opt, "anongid=", 8) == 0)
-                       ep->e_anongid = atoi(opt+8);
-               else if (strncmp(opt, "squash_uids=", 12) == 0) {
-                       if (parsesquash(opt+12, &squids, &nsquids, &cp) < 0) {
+               else if (strncmp(opt, "anonuid=", 8) == 0) {
+                       char *oe;
+                       ep->e_anonuid = strtol(opt+8, &oe, 10);
+                       if (opt[8]=='\0' || *oe != '\0') {
+                               xlog(L_ERROR, "%s: %d: bad anonuid \"%s\"\n",
+                                    flname, flline, opt);      
+bad_option:
                                free(opt);
+                               export_errno = EINVAL;
                                return -1;
                        }
+               } else if (strncmp(opt, "anongid=", 8) == 0) {
+                       char *oe;
+                       ep->e_anongid = strtol(opt+8, &oe, 10);
+                       if (opt[8]=='\0' || *oe != '\0') {
+                               xlog(L_ERROR, "%s: %d: bad anongid \"%s\"\n",
+                                    flname, flline, opt);      
+                               goto bad_option;
+                       }
+               } else if (strncmp(opt, "squash_uids=", 12) == 0) {
+                       if (parsesquash(opt+12, &squids, &nsquids, &cp) < 0) {
+                               goto bad_option;
+                       }
                } else if (strncmp(opt, "squash_gids=", 12) == 0) {
                        if (parsesquash(opt+12, &sqgids, &nsqgids, &cp) < 0) {
-                               free(opt);
-                               return -1;
+                               goto bad_option;
                        }
+               } else if (strncmp(opt, "fsid=", 5) == 0) {
+                       char *oe;
+                       ep->e_fsid = strtoul(opt+5, &oe, 0);
+                       if (opt[5]=='\0' || *oe != '\0') {
+                               xlog(L_ERROR, "%s: %d: bad fsid \"%s\"\n",
+                                    flname, flline, opt);      
+                               goto bad_option;
+                       }
+                       ep->e_flags |= NFSEXP_FSID;
                } else {
                        xlog(L_ERROR, "%s:%d: unknown keyword \"%s\"\n",
-                                       efname, efp->x_line, opt);
+                                       flname, flline, opt);
                        ep->e_flags |= NFSEXP_ALLSQUASH | NFSEXP_READONLY;
-                       free(opt);
-                       return -1;
+                       goto bad_option;
                }
                free(opt);
                while (isblank(*cp))
@@ -392,10 +425,12 @@ parseopts(char *cp, struct exportent *ep)
        ep->e_nsqgids = nsqgids;
 
 out:
-       if (!had_sync_opt)
-               xlog(L_WARNING, "No 'sync' or 'async' option specified for export \"%s:%s\".\n"
+       if (warn && !had_sync_opt)
+               xlog(L_WARNING, "%s [%d]: No 'sync' or 'async' option specified for export \"%s:%s\".\n"
                                "  Assuming default behaviour ('sync').\n"
                                "  NOTE: this default has changed from previous versions\n",
+
+                               flname, flline,
                                ep->e_hostname, ep->e_path);
 
        return 1;
@@ -501,7 +536,7 @@ getexport(char *exp, int len)
        xskip(efp, " \t");
        if ((ok = xgettok(efp, 0, exp, len)) < 0)
                xlog(L_ERROR, "%s:%d: syntax error",
-                       efname, efp->x_line);
+                       efname?"command line":efname, efp->x_line);
        return ok;
 }
 
@@ -509,6 +544,6 @@ static void
 syntaxerr(char *msg)
 {
        xlog(L_ERROR, "%s:%d: syntax error: %s",
-                       efname, efp->x_line, msg);
+                       efname, efp?efp->x_line:0, msg);
 }