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[unix-history] / usr / src / usr.sbin / amd / amd / am_ops.c

/*
* Copyright (c) 1989 Jan-Simon Pendry
* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* %sccs.include.redist.c%
*
*      @(#)am_ops.c    5.3 (Berkeley) %G%
*
* $Id: am_ops.c,v 5.2.1.5 91/05/07 22:17:46 jsp Alpha $
*
*/

#include "am.h"

static am_ops *vops[] = {
#ifdef HAS_UFS
       &ufs_ops,
#endif
#ifdef HAS_NFS
       &nfs_ops,
#endif
#ifdef HAS_NFSX
       &nfsx_ops,
#endif
#ifdef HAS_HOST
       &host_ops,
#endif
#ifdef HAS_SFS
       &sfs_ops,
#endif
#ifdef HAS_LOFS
       &lofs_ops,
#endif
#ifdef HAS_PFS
       &pfs_ops,
#endif
#ifdef HAS_UNION_FS
       &union_ops,
#endif
       &afs_ops,       /* These four should be last ... */
       &dfs_ops,       /* ... */
       &toplvl_ops,    /* ... */
       &efs_ops,       /* ... in the order afs; dfs; toplvl; efs */
       0
};

void ops_showfstypes P((FILE *fp));
void ops_showfstypes(fp)
FILE *fp;
{
       struct am_ops **ap;
       char *sep = "";

       for (ap = vops; *ap; ap++) {
               fprintf(fp, "%s%s", sep, (*ap)->fs_type);
               sep = ", ";
       }
}

#ifdef SUNOS4_COMPAT
#ifdef nomore
/*
* Crack a SunOS4-style host:fs:sub-link line
* Construct an amd-style line and call the
* normal amd matcher.
*/
am_ops *sunos4_match(fo, key, g_key, path, keym, map)
am_opts *fo;
char *key;
char *g_key;
char *path;
char *keym;
char *map;
{
       char *host = key;
       char *fs = strchr(host, ':');
       char *sublink = fs ? strchr(fs+1, ':') : 0;
       char keybuf[MAXPATHLEN];

       sprintf(keybuf, "type:=nfs;rhost:=%s;rfs:=%s;sublink:=%s;opts:=%s", host,
               fs ? fs+1 : "",
               sublink ? sublink+1  : "",
               g_key);
       return ops_match(fo, keybuf, "", path, keym, map);
}
#endif
#endif /* SUNOS4_COMPAT */

am_ops *ops_match(fo, key, g_key, path, keym, map)
am_opts *fo;
char *key;
char *g_key;
char *path;
char *keym;
char *map;
{
       am_ops **vp;
       am_ops *rop = 0;

       /*
        * First crack the global opts and the local opts
        */
       if (!eval_fs_opts(fo, key, g_key, path, keym, map)) {
               rop = &efs_ops;
       } else if (fo->opt_type == 0) {
               plog(XLOG_USER, "No fs type specified (key = \"%s\", map = \"%s\")", keym, map);
               rop = &efs_ops;
       } else {
               /*
                * Next find the correct filesystem type
                */
               for (vp = vops; rop = *vp; vp++)
                       if (strcmp(rop->fs_type, fo->opt_type) == 0)
                               break;

               if (!rop) {
                       plog(XLOG_USER, "fs type \"%s\" not recognised", fo->opt_type);
                       rop = &efs_ops;
               }
       }

       /*
        * Make sure we have a default mount option.
        * Otherwise skip past any leading '-'.
        */
       if (fo->opt_opts == 0)
               fo->opt_opts = "rw,defaults";
       else if (*fo->opt_opts == '-')
               fo->opt_opts++;

       /*
        * Check the filesystem is happy
        */
       if (fo->fs_mtab)
               free((voidp) fo->fs_mtab);

       if (fo->fs_mtab = (*rop->fs_match)(fo))
               return rop;

       /*
        * Return error file system
        */
       fo->fs_mtab = (*efs_ops.fs_match)(fo);
       return &efs_ops;
}