/* * Copyright (c) 1980, 1989, 1993, 1994 * The Regents of the University of California. All rights reserved. * Copyright (c) 2001 * David Rufino <daverufino@btinternet.com> * Copyright (c) 2013 * xaizek <xaizek@posteo.net> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Most of this was ripped from the mount(3) source. */ #include "mntent.h" #if (!defined(HAVE_MNTENT_H) || !HAVE_MNTENT_H) && \ defined(HAVE_GETMNTINFO) && HAVE_GETMNTINFO #include <sys/param.h> #include <sys/ucred.h> #include <sys/mount.h> #include <stdlib.h> #include <string.h> #ifdef __NetBSD__ #define statfs statvfs #define f_flags f_flag #endif static struct mntent * statfs_to_mntent(struct statfs *mntbuf); static char * flags2opts(int flags); static char * catopt(char s0[], const char s1[]); char * hasmntopt(const struct mntent *mnt, const char option[]) { char *opt, *optbuf; optbuf = strdup(mnt->mnt_opts); for(opt = optbuf; (opt = strtok(opt, " ")) != NULL; opt = NULL) { if(!strcasecmp(opt, option)) { opt = opt - optbuf + mnt->mnt_opts; free(optbuf); return (opt); } } free(optbuf); return NULL; } struct mntent * getmntent(FILE *fp) { static int pos = -1; static int mntsize = -1; static struct statfs *mntbuf; if(pos == -1 || mntsize == -1) { mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); } pos++; if(pos == mntsize) { pos = mntsize = -1; return NULL; } return statfs_to_mntent(&mntbuf[pos]); } static struct mntent * statfs_to_mntent(struct statfs *mntbuf) { static struct mntent _mntent; static char opts_buf[40], *tmp; _mntent.mnt_fsname = mntbuf->f_mntfromname; _mntent.mnt_dir = mntbuf->f_mntonname; _mntent.mnt_type = mntbuf->f_fstypename; tmp = flags2opts (mntbuf->f_flags); if(tmp != NULL) { opts_buf[sizeof(opts_buf) - 1] = '\0'; strncpy(opts_buf, tmp, sizeof(opts_buf) - 1); free(tmp); } else { *opts_buf = '\0'; } _mntent.mnt_opts = opts_buf; _mntent.mnt_freq = _mntent.mnt_passno = 0; return &_mntent; } static char * flags2opts(int flags) { char *res = catopt(NULL, (flags & MNT_RDONLY) ? "ro" : "rw"); if(flags & MNT_SYNCHRONOUS) res = catopt(res, "sync"); if(flags & MNT_NOEXEC) res = catopt(res, "noexec"); if(flags & MNT_NOSUID) res = catopt(res, "nosuid"); #ifndef __OpenBSD__ if(flags & MNT_UNION) res = catopt(res, "union"); #endif if(flags & MNT_ASYNC) res = catopt(res, "async"); if(flags & MNT_NOATIME) res = catopt(res, "noatime"); #if !defined(__APPLE__) && !defined(__OpenBSD__) && !defined(__NetBSD__) if(flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr"); if(flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw"); if(flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow"); if(flags & MNT_SUIDDIR) res = catopt(res, "suiddir"); #endif return res; } static char * catopt(char s0[], const char s1[]) { char *cp; if(s1 == NULL || *s1 == '\0') { return s0; } if(s0 && *s0) { const size_t i = strlen(s0) + strlen(s1) + 1 + 1; if((cp = malloc(i)) == NULL) { return NULL; } (void)snprintf(cp, i, "%s %s", s0, s1); } else { cp = strdup(s1); } free(s0); return cp; } #endif /* HAVE_MNTENT_H */ /* vim: set tabstop=2 softtabstop=2 shiftwidth=2 noexpandtab cinoptions-=(0 : */ /* vim: set cinoptions+=t0 filetype=c : */