]> git.decadent.org.uk Git - nfs-utils.git/blobdiff - support/nfs/exports.c
Merge branch 'upstream'
[nfs-utils.git] / support / nfs / exports.c
index ce49edc2e4f641dc3a1d4ac80c1a94a340810b45..e6de71aebfbce484e4c5aae3bf99b87c979408ea 100644 (file)
@@ -14,7 +14,9 @@
  *             as is, with no warranty expressed or implied.
  */
 
-#include "config.h"
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
 
 #include <sys/param.h>
 #include <stdlib.h>
@@ -22,6 +24,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <unistd.h>
+#include <errno.h>
 #include "nfslib.h"
 #include "exportfs.h"
 #include "xmalloc.h"
@@ -31,6 +34,8 @@
 #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 +44,7 @@ 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);
@@ -61,10 +66,10 @@ setexportent(char *fname, char *type)
 }
 
 struct exportent *
-getexportent(int fromkernel)
+getexportent(int fromkernel, int fromexports)
 {
        static struct exportent ee;
-       char            exp[512];
+       char            exp[512], *hostname;
        char            rpath[MAXPATHLEN+1];
        char            *opt, *sp;
        int             ok;
@@ -84,10 +89,11 @@ getexportent(int fromkernel)
                ee.e_flags &= ~NFSEXP_GATHERED_WRITES;
        }
        ee.e_maptype = CLE_MAP_IDENT;
-       ee.e_anonuid = -2;
-       ee.e_anongid = -2;
+       ee.e_anonuid = 65534;
+       ee.e_anongid = 65534;
        ee.e_squids = NULL;
        ee.e_sqgids = NULL;
+       ee.e_mountpoint = NULL;
        ee.e_nsquids = 0;
        ee.e_nsqgids = 0;
 
@@ -101,6 +107,7 @@ getexportent(int fromkernel)
        }
        if (ok < 0) {
                xlog(L_ERROR, "expected client(options...)");
+               export_errno = EINVAL;
                return NULL;
        }
        first = 0;
@@ -108,26 +115,32 @@ getexportent(int fromkernel)
        /* Check for default client */
        if (ok == 0)
                exp[0] = '\0';
+
+       hostname = exp;
        if ((opt = strchr(exp, '(')) != NULL) {
-               if (opt == exp) 
+               if (opt == exp) {
                        xlog(L_WARNING, "No host name given with %s %s, suggest *%s to avoid warning", ee.e_path, exp, exp);
+                       hostname = "*";
+               }
                *opt++ = '\0';
                if (!(sp = strchr(opt, ')')) || sp[1] != '\0') {
                        syntaxerr("bad option list");
+                       export_errno = EINVAL;
                        return NULL;
                }
                *sp = '\0';
        } else {
            xlog(L_WARNING, "No options for %s %s: suggest %s(sync) to avoid warning", ee.e_path, exp, exp);
        }
-       if (strlen(exp) >= sizeof(ee.e_hostname)) {
+       if (strlen(hostname) >= sizeof(ee.e_hostname)) {
                syntaxerr("client name too long");
+               export_errno = EINVAL;
                return NULL;
        }
-       strncpy(ee.e_hostname, exp, sizeof (ee.e_hostname) - 1);
+       strncpy(ee.e_hostname, hostname, 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 */
@@ -154,7 +167,7 @@ putexportent(struct exportent *ep)
 
        fp = efp->x_fp;
        for (i=0; esc[i]; i++)
-               if (iscntrl(esc[i]) || esc[i] == '"' || esc[i] == '\\'|| isspace(esc[i]))
+               if (iscntrl(esc[i]) || esc[i] == '"' || esc[i] == '\\' || esc[i] == '#' || isspace(esc[i]))
                        fprintf(fp, "\\%03o", esc[i]);
                else
                        fprintf(fp, "%c", esc[i]);
@@ -164,8 +177,10 @@ 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_CROSSMOUNT)?
+                               "" : "no");
        fprintf(fp, "%ssecure,", (ep->e_flags & NFSEXP_INSECURE_PORT)?
                                "in" : "");
        fprintf(fp, "%sroot_squash,", (ep->e_flags & NFSEXP_ROOTSQUASH)?
@@ -176,9 +191,15 @@ putexportent(struct exportent *ep)
                "no_" : "");
        fprintf(fp, "%ssecure_locks,", (ep->e_flags & NFSEXP_NOAUTHNLM)?
                "in" : "");
+       fprintf(fp, "%sacl,", (ep->e_flags & NFSEXP_NOACL)?
+               "no_" : "");
        if (ep->e_flags & NFSEXP_FSID) {
                fprintf(fp, "fsid=%d,", ep->e_fsid);
        }
+       if (ep->e_mountpoint)
+               fprintf(fp, "mountpoint%s%s,",
+                       ep->e_mountpoint[0]?"=":"", ep->e_mountpoint);
+
        fprintf(fp, "mapping=");
        switch (ep->e_maptype) {
        case CLE_MAP_IDENT:
@@ -239,6 +260,8 @@ dupexportent(struct exportent *dst, struct exportent *src)
                dst->e_sqgids = (int *) xmalloc(n * sizeof(int));
                memcpy(dst->e_sqgids, src->e_sqgids, n * sizeof(int));
        }
+       if (src->e_mountpoint)
+               dst->e_mountpoint = strdup(src->e_mountpoint);
 }
 
 struct exportent *
@@ -248,10 +271,11 @@ mkexportent(char *hname, char *path, char *options)
 
        ee.e_flags = EXPORT_DEFAULT_FLAGS;
        ee.e_maptype = CLE_MAP_IDENT;
-       ee.e_anonuid = -2;
-       ee.e_anongid = -2;
+       ee.e_anonuid = 65534;
+       ee.e_anongid = 65534;
        ee.e_squids = NULL;
        ee.e_sqgids = NULL;
+       ee.e_mountpoint = NULL;
        ee.e_nsquids = 0;
        ee.e_nsqgids = 0;
 
@@ -269,7 +293,7 @@ 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;
 }
@@ -277,7 +301,7 @@ 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;
 }
@@ -286,7 +310,7 @@ 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";
@@ -327,13 +351,13 @@ 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_CROSSMNT;
-               else if (!strcmp(opt, "nocrossmnt"))            /* old style */
-                       ep->e_flags &= ~NFSEXP_CROSSMNT;
+                       ep->e_flags &= ~NFSEXP_NOHIDE;
+               else if (!strcmp(opt, "crossmnt"))
+                       ep->e_flags |= NFSEXP_CROSSMOUNT;
+               else if (!strcmp(opt, "nocrossmnt"))
+                       ep->e_flags &= ~NFSEXP_CROSSMOUNT;
                else if (!strcmp(opt, "wdelay"))
                        ep->e_flags |= NFSEXP_GATHERED_WRITES;
                else if (!strcmp(opt, "no_wdelay"))
@@ -358,6 +382,10 @@ parseopts(char *cp, struct exportent *ep)
                        ep->e_flags &= ~NFSEXP_NOAUTHNLM;
                else if (strcmp(opt, "insecure_locks") == 0)
                        ep->e_flags |= NFSEXP_NOAUTHNLM;
+               else if (strcmp(opt, "acl") == 0)
+                       ep->e_flags &= ~NFSEXP_NOACL;
+               else if (strcmp(opt, "no_acl") == 0)
+                       ep->e_flags |= NFSEXP_NOACL;
                else if (strncmp(opt, "mapping=", 8) == 0)
                        ep->e_maptype = parsemaptype(opt+8);
                else if (strcmp(opt, "map_identity") == 0)      /* old style */
@@ -370,7 +398,9 @@ parseopts(char *cp, struct exportent *ep)
                        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) {
@@ -379,18 +409,15 @@ parseopts(char *cp, struct exportent *ep)
                        if (opt[8]=='\0' || *oe != '\0') {
                                xlog(L_ERROR, "%s: %d: bad anongid \"%s\"\n",
                                     flname, flline, opt);      
-                               free(opt);
-                               return -1;
+                               goto bad_option;
                        }
                } else if (strncmp(opt, "squash_uids=", 12) == 0) {
                        if (parsesquash(opt+12, &squids, &nsquids, &cp) < 0) {
-                               free(opt);
-                               return -1;
+                               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;
@@ -398,16 +425,23 @@ parseopts(char *cp, struct exportent *ep)
                        if (opt[5]=='\0' || *oe != '\0') {
                                xlog(L_ERROR, "%s: %d: bad fsid \"%s\"\n",
                                     flname, flline, opt);      
-                               free(opt);
-                               return -1;
+                               goto bad_option;
                        }
                        ep->e_flags |= NFSEXP_FSID;
+               } else if (strcmp(opt, "mountpoint")==0 ||
+                          strcmp(opt, "mp") == 0 ||
+                          strncmp(opt, "mountpoint=", 11)==0 ||
+                          strncmp(opt, "mp=", 3) == 0) {
+                       char * mp = strchr(opt, '=');
+                       if (mp)
+                               ep->e_mountpoint = strdup(mp+1);
+                       else
+                               ep->e_mountpoint = strdup("");
                } else {
                        xlog(L_ERROR, "%s:%d: unknown keyword \"%s\"\n",
                                        flname, flline, opt);
                        ep->e_flags |= NFSEXP_ALLSQUASH | NFSEXP_READONLY;
-                       free(opt);
-                       return -1;
+                       goto bad_option;
                }
                free(opt);
                while (isblank(*cp))
@@ -420,10 +454,12 @@ 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 && !(ep->e_flags & NFSEXP_READONLY))
+               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;