/* $OpenBSD: mount_msdos.c,v 1.21 2006/12/15 12:48:29 jmc Exp $ */ /* $NetBSD: mount_msdos.c,v 1.16 1996/10/24 00:12:50 cgd Exp $ */ /* * Copyright (c) 1994 Christopher G. Demetriou * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ #ifndef lint static char rcsid[] = "$OpenBSD: mount_msdos.c,v 1.21 2006/12/15 12:48:29 jmc Exp $"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mntopts.h" const struct mntopt mopts[] = { MOPT_STDOPTS, MOPT_UPDATE, { NULL } }; gid_t a_gid(char *); uid_t a_uid(char *); mode_t a_mask(char *); void usage(void); int main(int argc, char **argv) { struct msdosfs_args args; struct stat sb; int c, mntflags, set_gid, set_uid, set_mask; char *dev, dir[MAXPATHLEN]; char *errcause; mntflags = set_gid = set_uid = set_mask = 0; (void)memset(&args, '\0', sizeof(args)); while ((c = getopt(argc, argv, "sl9xu:g:m:o:")) != -1) { switch (c) { case 's': args.flags |= MSDOSFSMNT_SHORTNAME; break; case 'l': args.flags |= MSDOSFSMNT_LONGNAME; break; case '9': args.flags |= MSDOSFSMNT_NOWIN95; break; case 'x': args.flags |= MSDOSFSMNT_ALLOWDIRX; break; case 'u': args.uid = a_uid(optarg); set_uid = 1; break; case 'g': args.gid = a_gid(optarg); set_gid = 1; break; case 'm': args.mask = a_mask(optarg); set_mask = 1; break; case 'o': getmntopts(optarg, mopts, &mntflags); break; case '?': default: usage(); break; } } if (optind + 2 != argc) usage(); dev = argv[optind]; if (realpath(argv[optind + 1], dir) == NULL) err(1, "realpath %s", argv[optind + 1]); args.fspec = dev; args.export_info.ex_root = -2; /* unchecked anyway on DOS fs */ if (mntflags & MNT_RDONLY) args.export_info.ex_flags = MNT_EXRDONLY; else args.export_info.ex_flags = 0; if (!set_gid || !set_uid || !set_mask) { if (stat(dir, &sb) == -1) err(1, "stat %s", dir); if (!set_uid) args.uid = sb.st_uid; if (!set_gid) args.gid = sb.st_gid; if (!set_mask) args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); } if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0) { switch (errno) { case EOPNOTSUPP: errcause = "filesystem not supported by kernel"; break; case EMFILE: errcause = "mount table full"; break; case EINVAL: errcause = "not an MSDOS filesystem"; break; default: errcause = strerror(errno); break; } errx(1, "%s on %s: %s", args.fspec, dir, errcause); } exit (0); } gid_t a_gid(char *s) { struct group *gr; char *gname; gid_t gid; if ((gr = getgrnam(s)) != NULL) gid = gr->gr_gid; else { for (gname = s; *s && isdigit(*s); ++s); if (!*s) gid = atoi(gname); else errx(1, "unknown group id: %s", gname); } return (gid); } uid_t a_uid(char *s) { struct passwd *pw; char *uname; uid_t uid; if ((pw = getpwnam(s)) != NULL) uid = pw->pw_uid; else { for (uname = s; *s && isdigit(*s); ++s); if (!*s) uid = atoi(uname); else errx(1, "unknown user id: %s", uname); } return (uid); } mode_t a_mask(char *s) { int done, rv; char *ep; done = 0; if (*s >= '0' && *s <= '7') { done = 1; rv = strtol(optarg, &ep, 8); } if (!done || rv < 0 || *ep) errx(1, "invalid file mode: %s", s); return (rv); } void usage(void) { fprintf(stderr, "usage: mount_msdos [-9lsx] [-g gid] [-m mask] [-o options] [-u uid] special node\n"); exit(1); }