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/* |
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* Copyright (c) 1990 Jan-Simon Pendry |
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* Copyright (c) 1990 Imperial College of Science, Technology & Medicine |
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* Copyright (c) 1990, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* This code is derived from software contributed to Berkeley by |
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* Jan-Simon Pendry at Imperial College, London. |
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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. 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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* from: @(#)mount_fs.c 8.1 (Berkeley) 6/6/93 |
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* $Id: mount_fs.c,v 1.14 2014/10/20 06:55:59 guenther Exp $ |
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*/ |
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#include "am.h" |
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#include <unistd.h> |
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#include <sys/stat.h> |
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/* |
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* Standard mount flags |
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*/ |
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struct opt_tab mnt_flags[] = { |
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{ "ro", MNT_RDONLY }, |
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{ "nodev", MNT_NODEV }, |
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{ "noexec", MNT_NOEXEC }, |
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{ "nosuid", MNT_NOSUID }, |
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{ "sync", MNT_SYNCHRONOUS }, |
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{ 0, 0 } |
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}; |
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int |
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compute_mount_flags(struct mntent *mnt) |
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{ |
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struct opt_tab *opt; |
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int flags; |
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flags = 0; |
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/* |
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* Crack basic mount options |
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*/ |
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for (opt = mnt_flags; opt->opt; opt++) |
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flags |= hasmntopt(mnt, opt->opt) ? opt->flag : 0; |
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return flags; |
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} |
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int |
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mount_fs(struct mntent *mnt, int flags, caddr_t mnt_data, int retry, |
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const char *type) |
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{ |
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int error = 0; |
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#ifdef DEBUG |
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dlog("%s fstype %s (%s) flags %#x (%s)", |
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mnt->mnt_dir, type, mnt->mnt_type, flags, mnt->mnt_opts); |
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#endif /* DEBUG */ |
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/* |
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* Fake some mount table entries for the automounter |
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*/ |
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again: |
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clock_valid = 0; |
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error = mount(type, mnt->mnt_dir, flags, mnt_data); |
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if (error < 0) |
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plog(XLOG_ERROR, "%s: mount: %m", mnt->mnt_dir); |
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if (error < 0 && --retry > 0) { |
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sleep(1); |
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goto again; |
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} |
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if (error < 0) { |
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#ifdef notdef |
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if (automount) |
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going_down(errno); |
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#endif |
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return errno; |
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} |
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return 0; |
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} |
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/* |
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* Some systems don't provide these to the user, |
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* but amd needs them, so... |
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* |
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* From: Piete Brooks <pb@cl.cam.ac.uk> |
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*/ |
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#include <ctype.h> |
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static char * |
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nextmntopt(char **p) |
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{ |
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char *cp = *p; |
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char *rp; |
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/* |
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* Skip past white space |
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*/ |
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while (isspace((unsigned char)*cp)) |
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cp++; |
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/* |
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* Word starts here |
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*/ |
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rp = cp; |
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/* |
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* Scan to send of string or separator |
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*/ |
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while (*cp && *cp != ',') |
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cp++; |
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/* |
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* If separator found the overwrite with nul char. |
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*/ |
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if (*cp) { |
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*cp = '\0'; |
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cp++; |
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} |
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/* |
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* Return value for next call |
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*/ |
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*p = cp; |
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return rp; |
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} |
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char * |
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hasmntopt(struct mntent *mnt, char *opt) |
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{ |
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char t[MNTMAXSTR]; |
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char *f; |
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char *o = t; |
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int l = strlen(opt); |
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strlcpy(t, mnt->mnt_opts, sizeof(t)); |
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while (*(f = nextmntopt(&o))) |
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if (strncmp(opt, f, l) == 0) |
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return f - t + mnt->mnt_opts; |
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return 0; |
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} |