195 lines
6.1 KiB
C++
195 lines
6.1 KiB
C++
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// $OpenBSD: mntent_compat.c++,v 1.1.1.1 2007/04/27 22:00:55 jasper Exp $
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/*
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* Copyright (c) 1980, 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 2001
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* David Rufino <daverufino@btinternet.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* most of this was ripped from the mount(3) source */
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//#include "config.h"
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#include "mntent.h"
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#if !defined(HAVE_MNTENT_H) && !defined(HAVE_SYS_MNTTAB_H)
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#include <stdlib.h>
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#include <string.h>
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#if defined(HAVE_SYS_STATVFS_H) && !defined(__APPLE__) && !defined(__DragonFly__) && !defined(__FreeBSD__)
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# include <sys/statvfs.h>
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#endif
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static int pos = -1;
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static int mntsize = -1;
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static struct mntent _mntent;
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char *
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hasmntopt (const struct mntent *mnt, const char *option)
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{
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int found;
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char *opt, *optbuf;
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optbuf = strdup(mnt->mnt_opts);
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found = 0;
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for (opt = optbuf; (opt = strtok(opt, " ")) != NULL; opt = NULL) {
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if (!strcasecmp(opt, option)) {
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opt = opt - optbuf + mnt->mnt_opts;
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free (optbuf);
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return (opt);
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}
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}
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free (optbuf);
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return (NULL);
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}
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static char *
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catopt (char *s0, const char *s1)
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{
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size_t i;
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char *cp;
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if (s1 == NULL || *s1 == '\0')
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return s0;
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if (s0 && *s0) {
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i = strlen(s0) + strlen(s1) + 1 + 1;
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if ((cp = (char *)malloc(i)) == NULL)
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return (NULL);
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(void)snprintf(cp, i, "%s %s", s0, s1);
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} else
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cp = strdup(s1);
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if (s0)
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free(s0);
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return (cp);
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}
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static char *
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flags2opts (int flags)
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{
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char *res;
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res = NULL;
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res = catopt(res, (flags & MNT_RDONLY) ? "ro" : "rw");
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if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync");
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if (flags & MNT_NOEXEC) res = catopt(res, "noexec");
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if (flags & MNT_NOSUID) res = catopt(res, "nosuid");
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if (flags & MNT_NODEV) res = catopt(res, "nodev");
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#ifdef MNT_UNION
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if (flags & MNT_UNION) res = catopt(res, "union");
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#endif
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if (flags & MNT_ASYNC) res = catopt(res, "async");
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#ifdef MNT_NOATIME
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if (flags & MNT_NOATIME) res = catopt(res, "noatime");
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#endif
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#ifdef MNT_NOCLUSTERR
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if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr");
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#endif
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#ifdef MNT_NOCLUSTERW
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if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw");
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#endif
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#ifdef MNT_NOSYMFOLLOW
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if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow");
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#endif
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#ifdef MNT_SUIDDIR
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if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir");
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#endif
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#ifdef MNT_NOCOREDUMP
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if (flags & MNT_NOCOREDUMP) res = catopt(res, "nocoredump");
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#endif
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#ifdef MNT_IGNORE
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if (flags & MNT_IGNORE) res = catopt(res, "hidden");
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#endif
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#ifdef MNT_SYMPERM
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if (flags & MNT_SYMPERM) res = catopt(res, "symperm");
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#endif
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#ifdef MNT_NODEVMTIME
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if (flags & MNT_NODEVMTIME) res = catopt(res, "nodevmtime");
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#endif
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#ifdef MNT_SOFTDEP
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if (flags & MNT_SOFTDEP) res = catopt(res, "softdep");
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#endif
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return res;
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}
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static struct mntent *
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#if defined(HAVE_SYS_STATVFS_H) && !defined(__APPLE__) && !defined(__DragonFly__) && !defined(__FreeBSD__)
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statfs_to_mntent (struct statvfs *mntbuf)
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#else
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statfs_to_mntent (struct statfs *mntbuf)
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#endif
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{
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static char opts_buf[40], *tmp;
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_mntent.mnt_fsname = mntbuf->f_mntfromname;
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_mntent.mnt_dir = mntbuf->f_mntonname;
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_mntent.mnt_type = mntbuf->f_fstypename;
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#if defined(HAVE_SYS_STATVFS_H) && !defined(__APPLE__) && !defined(__DragonFly__) && !defined(__FreeBSD__)
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tmp = flags2opts (mntbuf->f_flag);
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#else
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tmp = flags2opts (mntbuf->f_flags);
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#endif
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if (tmp) {
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opts_buf[sizeof(opts_buf)-1] = '\0';
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strncpy (opts_buf, tmp, sizeof(opts_buf)-1);
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free (tmp);
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} else {
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*opts_buf = '\0';
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}
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_mntent.mnt_opts = opts_buf;
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_mntent.mnt_freq = _mntent.mnt_passno = 0;
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return (&_mntent);
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}
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struct mntent *
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getmntent (FILE *fp)
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{
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#if defined(HAVE_SYS_STATVFS_H) && !defined(__APPLE__) && !defined(__DragonFly__) && !defined(__FreeBSD__)
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static struct statvfs *mntbuf;
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#else
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static struct statfs *mntbuf;
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#endif
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if (pos == -1 || mntsize == -1)
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mntsize = getmntinfo (&mntbuf, MNT_NOWAIT);
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++pos;
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if (pos == mntsize) {
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pos = mntsize = -1;
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return (NULL);
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}
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return (statfs_to_mntent (&mntbuf[pos]));
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}
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#endif /* HAVE_MNTENT_H */
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