diff options
Diffstat (limited to 'cddl/compat/opensolaris/misc/mnttab.c')
| -rw-r--r-- | cddl/compat/opensolaris/misc/mnttab.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/cddl/compat/opensolaris/misc/mnttab.c b/cddl/compat/opensolaris/misc/mnttab.c new file mode 100644 index 000000000000..c1971caf3641 --- /dev/null +++ b/cddl/compat/opensolaris/misc/mnttab.c @@ -0,0 +1,160 @@ +/*- + * Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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. + */ + +/* + * This file implements Solaris compatible getmntany() and hasmntopt() + * functions. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/mount.h> +#include <sys/mntent.h> +#include <sys/mnttab.h> +#include <stdio.h> + +static char * +mntopt(char **p) +{ + char *cp = *p; + char *retstr; + + while (*cp && isspace(*cp)) + cp++; + + retstr = cp; + while (*cp && *cp != ',') + cp++; + + if (*cp) { + *cp = '\0'; + cp++; + } + + *p = cp; + return (retstr); +} + +char * +hasmntopt(struct mnttab *mnt, char *opt) +{ + char tmpopts[MNT_LINE_MAX]; + char *f, *opts = tmpopts; + + if (mnt->mnt_mntopts == NULL) + return (NULL); + (void) strcpy(opts, mnt->mnt_mntopts); + f = mntopt(&opts); + for (; *f; f = mntopt(&opts)) { + if (strncmp(opt, f, strlen(opt)) == 0) + return (f - tmpopts + mnt->mnt_mntopts); + } + return (NULL); +} + +static void +optadd(char *mntopts, size_t size, const char *opt) +{ + + if (mntopts[0] != '\0') + strlcat(mntopts, ",", size); + strlcat(mntopts, opt, size); +} + +int +getmntany(FILE *fd __unused, struct mnttab *mgetp, struct mnttab *mrefp) +{ + static struct statfs *sfs = NULL; + static char mntopts[MNTMAXSTR]; + struct opt *o; + long i, n, flags; + + if (sfs != NULL) { + free(sfs); + sfs = NULL; + } + mntopts[0] = '\0'; + + n = getfsstat(NULL, 0, MNT_NOWAIT); + if (n == -1) + return (-1); + n = sizeof(*sfs) * (n + 8); + sfs = malloc(n); + if (sfs == NULL) + return (-1); + n = getfsstat(sfs, n, MNT_WAIT); + if (n == -1) { + free(sfs); + sfs = NULL; + return (-1); + } + for (i = 0; i < n; i++) { + if (mrefp->mnt_special != NULL && + strcmp(mrefp->mnt_special, sfs[i].f_mntfromname) != 0) { + continue; + } + if (mrefp->mnt_mountp != NULL && + strcmp(mrefp->mnt_mountp, sfs[i].f_mntonname) != 0) { + continue; + } + if (mrefp->mnt_fstype != NULL && + strcmp(mrefp->mnt_fstype, sfs[i].f_fstypename) != 0) { + continue; + } + flags = sfs[i].f_flags; +#define OPTADD(opt) optadd(mntopts, sizeof(mntopts), (opt)) + if (flags & MNT_RDONLY) + OPTADD(MNTOPT_RO); + else + OPTADD(MNTOPT_RW); + if (flags & MNT_NOSUID) + OPTADD(MNTOPT_NOSUID); + else + OPTADD(MNTOPT_SETUID); + if (flags & MNT_UPDATE) + OPTADD(MNTOPT_REMOUNT); + if (flags & MNT_NOATIME) + OPTADD(MNTOPT_NOATIME); + else + OPTADD(MNTOPT_ATIME); + OPTADD(MNTOPT_NOXATTR); + if (flags & MNT_NOEXEC) + OPTADD(MNTOPT_NOEXEC); + else + OPTADD(MNTOPT_EXEC); +#undef OPTADD + mgetp->mnt_special = sfs[i].f_mntfromname; + mgetp->mnt_mountp = sfs[i].f_mntonname; + mgetp->mnt_fstype = sfs[i].f_fstypename; + mgetp->mnt_mntopts = mntopts; + return (0); + } + free(sfs); + sfs = NULL; + return (-1); +} |