Import FreeBSD mount. --- /dev/null +++ b/sbin/mount/getmntopts.c @@ -0,0 +1,182 @@ +/*- + * Copyright (c) 1994 + * The Regents of the University of California. 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. + * 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. + */ + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)getmntopts.c 8.3 (Berkeley) 3/29/95"; +#endif /* not lint */ +#endif +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "mntopts.h" + +int getmnt_silent = 0; + +void +getmntopts(const char *options, const struct mntopt *m0, int *flagp, + int *altflagp) +{ + const struct mntopt *m; + int negative, len; + char *opt, *optbuf, *p; + int *thisflagp; + + /* Copy option string, since it is about to be torn asunder... */ + if ((optbuf = strdup(options)) == NULL) + err(1, NULL); + + for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { + /* Check for "no" prefix. */ + if (opt[0] == 'n' && opt[1] == 'o') { + negative = 1; + opt += 2; + } else + negative = 0; + + /* + * for options with assignments in them (ie. quotas) + * ignore the assignment as it's handled elsewhere + */ + p = strchr(opt, '='); + if (p != NULL) + *++p = '\0'; + + /* Scan option table. */ + for (m = m0; m->m_option != NULL; ++m) { + len = strlen(m->m_option); + if (strncasecmp(opt, m->m_option, len) == 0) + if (opt[len] == '\0' || opt[len] == '=') + break; + } + + /* Save flag, or fail if option is not recognized. */ + if (m->m_option) { + thisflagp = m->m_altloc ? altflagp : flagp; + if (negative == m->m_inverse) + *thisflagp |= m->m_flag; + else + *thisflagp &= ~m->m_flag; + } else if (!getmnt_silent) { + errx(1, "-o %s: option not supported", opt); + } + } + + free(optbuf); +} + +void +rmslashes(char *rrpin, char *rrpout) +{ + char *rrpoutstart; + + *rrpout = *rrpin; + for (rrpoutstart = rrpout; *rrpin != '\0'; *rrpout++ = *rrpin++) { + + /* skip all double slashes */ + while (*rrpin == '/' && *(rrpin + 1) == '/') + rrpin++; + } + + /* remove trailing slash if necessary */ + if (rrpout - rrpoutstart > 1 && *(rrpout - 1) == '/') + *(rrpout - 1) = '\0'; + else + *rrpout = '\0'; +} + +void +checkpath(const char *path, char *resolved) +{ + struct stat sb; + + if (realpath(path, resolved) != NULL && stat(resolved, &sb) == 0) { + if (!S_ISDIR(sb.st_mode)) + errx(EX_USAGE, "%s: not a directory", resolved); + } else + errx(EX_USAGE, "%s: %s", resolved, strerror(errno)); +} + +void +build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, + size_t len) +{ + int i; + + if (*iovlen < 0) + return; + i = *iovlen; + *iov = realloc(*iov, sizeof **iov * (i + 2)); + if (*iov == NULL) { + *iovlen = -1; + return; + } + (*iov)[i].iov_base = strdup(name); + (*iov)[i].iov_len = strlen(name) + 1; + i++; + (*iov)[i].iov_base = val; + if (len == (size_t)-1) { + if (val != NULL) + len = strlen(val) + 1; + else + len = 0; + } + (*iov)[i].iov_len = (int)len; + *iovlen = ++i; +} + +/* + * This function is needed for compatibility with parameters + * which used to use the mount_argf() command for the old mount() syscall. + */ +void +build_iovec_argf(struct iovec **iov, int *iovlen, const char *name, + const char *fmt, ...) +{ + va_list ap; + char val[255] = { 0 }; + + va_start(ap, fmt); + vsnprintf(val, sizeof(val), fmt, ap); + va_end(ap); + build_iovec(iov, iovlen, name, strdup(val), (size_t)-1); +} --- /dev/null +++ b/sbin/mount/mntopts.h @@ -0,0 +1,99 @@ +/*- + * Copyright (c) 1994 + * The Regents of the University of California. 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. + * 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. + * + * @(#)mntopts.h 8.7 (Berkeley) 3/29/95 + * $FreeBSD$ + */ + +struct mntopt { + const char *m_option; /* option name */ + int m_inverse; /* if a negative option, e.g. "atime" */ + int m_flag; /* bit to set, e.g. MNT_RDONLY */ + int m_altloc; /* 1 => set bit in altflags */ +}; + +/* User-visible MNT_ flags. */ +#define MOPT_ASYNC { "async", 0, MNT_ASYNC, 0 } +#define MOPT_NOATIME { "atime", 1, MNT_NOATIME, 0 } +#define MOPT_NOEXEC { "exec", 1, MNT_NOEXEC, 0 } +#define MOPT_NOSUID { "suid", 1, MNT_NOSUID, 0 } +#define MOPT_NOSYMFOLLOW { "symfollow", 1, MNT_NOSYMFOLLOW, 0 } +#define MOPT_RDONLY { "rdonly", 0, MNT_RDONLY, 0 } +#define MOPT_SYNC { "sync", 0, MNT_SYNCHRONOUS, 0 } +#define MOPT_UNION { "union", 0, MNT_UNION, 0 } +#define MOPT_USERQUOTA { "userquota", 0, 0, 0 } +#define MOPT_GROUPQUOTA { "groupquota", 0, 0, 0 } +#define MOPT_NOCLUSTERR { "clusterr", 1, MNT_NOCLUSTERR, 0 } +#define MOPT_NOCLUSTERW { "clusterw", 1, MNT_NOCLUSTERW, 0 } +#define MOPT_SUIDDIR { "suiddir", 0, MNT_SUIDDIR, 0 } +#define MOPT_SNAPSHOT { "snapshot", 0, MNT_SNAPSHOT, 0 } +#define MOPT_MULTILABEL { "multilabel", 0, MNT_MULTILABEL, 0 } +#define MOPT_ACLS { "acls", 0, MNT_ACLS, 0 } +#define MOPT_NFS4ACLS { "nfsv4acls", 0, MNT_NFS4ACLS, 0 } + +/* Control flags. */ +#define MOPT_FORCE { "force", 0, MNT_FORCE, 0 } +#define MOPT_UPDATE { "update", 0, MNT_UPDATE, 0 } +#define MOPT_RO { "ro", 0, MNT_RDONLY, 0 } +#define MOPT_RW { "rw", 1, MNT_RDONLY, 0 } + +/* This is parsed by mount(8), but is ignored by specific mount_*(8)s. */ +#define MOPT_AUTO { "auto", 0, 0, 0 } + +/* A handy macro as terminator of MNT_ array. */ +#define MOPT_END { NULL, 0, 0, 0 } + +#define MOPT_FSTAB_COMPAT \ + MOPT_RO, \ + MOPT_RW, \ + MOPT_AUTO + +/* Standard options which all mounts can understand. */ +#define MOPT_STDOPTS \ + MOPT_USERQUOTA, \ + MOPT_GROUPQUOTA, \ + MOPT_FSTAB_COMPAT, \ + MOPT_NOATIME, \ + MOPT_NOEXEC, \ + MOPT_SUIDDIR, /* must be before MOPT_NOSUID */ \ + MOPT_NOSUID, \ + MOPT_NOSYMFOLLOW, \ + MOPT_RDONLY, \ + MOPT_UNION, \ + MOPT_NOCLUSTERR, \ + MOPT_NOCLUSTERW, \ + MOPT_MULTILABEL, \ + MOPT_ACLS, \ + MOPT_NFS4ACLS + +void getmntopts(const char *, const struct mntopt *, int *, int *); +void rmslashes(char *, char *); +void checkpath(const char *, char resolved_path[]); +extern int getmnt_silent; +void build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, size_t len); +void build_iovec_argf(struct iovec **iov, int *iovlen, const char *name, const char *fmt, ...);