support/export/nfsctl.c

   1 /*
   2  * support/export/nfsctl.c
   3  *
   4  * Communicate export information to knfsd.
   5  *
   6  * Copyright (C) 1995 Olaf Kirch <okir@monad.swb.de>
   7  */
   8
   9 #ifdef HAVE_CONFIG_H
  10 #include <config.h>
  11 #endif
  12
  13 #include <sys/stat.h>
  14 #include <stdlib.h>
  15 #include <errno.h>
  16 #include <string.h>
  17 #include <ctype.h>
  18 #include "nfslib.h"
  19 #include "exportfs.h"
  20 #include "xio.h"
  21
  22 static int      expsetup(struct nfsctl_export *exparg, nfs_export *exp, int unexport);
  23 static int      cltsetup(struct nfsctl_client *cltarg, nfs_client *clp);
  24
  25 int
  26 export_export(nfs_export *exp)
  27 {
  28         nfs_client *    clp = exp->m_client;
  29         struct nfsctl_export    exparg;
  30         struct nfsctl_client    cltarg;
  31
  32         if (!clp->m_exported && (clp->m_type != MCL_GSS)) {
  33                 if (!cltsetup(&cltarg, clp))
  34                         return 0;
  35                 if (nfsaddclient(&cltarg) < 0)
  36                         return 0;
  37                 clp->m_exported = 1;
  38         }
  39         if (!expsetup(&exparg, exp, 0))
  40                 return 0;
  41         if (nfsexport(&exparg) < 0)
  42                 return 0;
  43         exp->m_exported = 1;
  44         return 1;
  45 }
  46
  47 int
  48 export_unexport(nfs_export *exp)
  49 {
  50         struct nfsctl_export    exparg;
  51
  52         if (!expsetup(&exparg, exp, 1) || nfsunexport(&exparg) < 0)
  53                 return 0;
  54         exp->m_exported = 0;
  55         return 1;
  56 }
  57
  58 static void
  59 str_tolower(char *s)
  60 {
  61         for ( ; *s; s++)
  62                 if (isupper(*s))
  63                         *s = tolower(*s);
  64 }
  65
  66 static int
  67 cltsetup(struct nfsctl_client *cltarg, nfs_client *clp)
  68 {
  69         int     i;
  70
  71         if (clp->m_type != MCL_FQDN) {
  72                 xlog(L_ERROR, "internal: can't export non-FQDN host");
  73                 return 0;
  74         }
  75         memset(cltarg, 0, sizeof(*cltarg));
  76         strncpy(cltarg->cl_ident, clp->m_hostname,
  77                 sizeof (cltarg->cl_ident) - 1);
  78         str_tolower(cltarg->cl_ident);
  79         cltarg->cl_naddr = clp->m_naddr;
  80         for (i = 0; i < cltarg->cl_naddr && i < NFSCLNT_ADDRMAX; i++)
  81                 cltarg->cl_addrlist[i] = clp->m_addrlist[i];
  82
  83         return 1;
  84 }
  85
  86 static int
  87 expsetup(struct nfsctl_export *exparg, nfs_export *exp, int unexport)
  88 {
  89         nfs_client              *clp = exp->m_client;
  90         struct stat             stb;
  91
  92         if (stat(exp->m_export.e_path, &stb) < 0)
  93                 return 0;
  94
  95         memset(exparg, 0, sizeof(*exparg));
  96         strncpy(exparg->ex_path, exp->m_export.e_path,
  97                 sizeof (exparg->ex_path) - 1);
  98         strncpy(exparg->ex_client, clp->m_hostname,
  99                 sizeof (exparg->ex_client) - 1);
 100         str_tolower(exparg->ex_client);
 101         exparg->ex_flags    = exp->m_export.e_flags;
 102         exparg->ex_dev      = (!unexport && (exp->m_export.e_flags & NFSEXP_FSID)) ?
 103                                 exp->m_export.e_fsid : stb.st_dev;
 104         exparg->ex_ino      = stb.st_ino;
 105         exparg->ex_anon_uid = exp->m_export.e_anonuid;
 106         exparg->ex_anon_gid = exp->m_export.e_anongid;
 107
 108         return 1;
 109 }