/* $OpenBSD: msdos.c,v 1.11 2017/03/23 18:16:06 patrick Exp $ */ /* $NetBSD: msdos.c,v 1.16 2016/01/30 09:59:27 mlelstv Exp $ */ /*- * Copyright (c) 2013 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Christos Zoulas. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ #include #include #include #include #include #include #include "ffs/buf.h" #include "msdos/denode.h" #include "makefs.h" #include "msdos.h" #include "msdos/mkfs_msdos.h" static int msdos_populate_dir(const char *, struct denode *, fsnode *, fsnode *, fsinfo_t *); void msdos_prep_opts(fsinfo_t *fsopts) { struct msdos_options *msdos_opt = ecalloc(1, sizeof(*msdos_opt)); const option_t msdos_options[] = { #define AOPT(_type, _name, _min) { \ .name = # _name, \ .type = _min == -1 ? OPT_STRPTR : \ (_min == -2 ? OPT_BOOL : \ (sizeof(_type) == 1 ? OPT_INT8 : \ (sizeof(_type) == 2 ? OPT_INT16 : \ (sizeof(_type) == 4 ? OPT_INT32 : OPT_INT64)))), \ .value = &msdos_opt->_name, \ .minimum = _min, \ .maximum = sizeof(_type) == 1 ? 0xff : \ (sizeof(_type) == 2 ? 0xffff : \ (sizeof(_type) == 4 ? 0xffffffff : 0x7fffffffffffffffLL)), \ }, ALLOPTS #undef AOPT { .name = NULL } }; fsopts->fs_specific = msdos_opt; fsopts->fs_options = copy_opts(msdos_options); } void msdos_cleanup_opts(fsinfo_t *fsopts) { free(fsopts->fs_specific); free(fsopts->fs_options); } int msdos_parse_opts(const char *option, fsinfo_t *fsopts) { struct msdos_options *msdos_opt = fsopts->fs_specific; option_t *msdos_options = fsopts->fs_options; int rv; assert(option != NULL); assert(fsopts != NULL); assert(msdos_opt != NULL); rv = set_option(msdos_options, option, NULL, 0); if (rv == -1) return rv; if (strcmp(msdos_options[rv].name, "volume_id") == 0) msdos_opt->volume_id_set = 1; else if (strcmp(msdos_options[rv].name, "media_descriptor") == 0) msdos_opt->media_descriptor_set = 1; else if (strcmp(msdos_options[rv].name, "hidden_sectors") == 0) msdos_opt->hidden_sectors_set = 1; return 1; } void msdos_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) { struct msdos_options *msdos_opt = fsopts->fs_specific; struct mkfsvnode vp, rootvp; struct msdosfsmount *pmp; assert(image != NULL); assert(dir != NULL); assert(root != NULL); assert(fsopts != NULL); /* * XXX: pick up other options from the msdos specific ones? * Is minsize right here? */ msdos_opt->create_size = MAX(msdos_opt->create_size, fsopts->minsize); msdos_opt->offset = fsopts->offset; if (msdos_opt->bytes_per_sector == 0) { if (fsopts->sectorsize == -1) fsopts->sectorsize = 512; msdos_opt->bytes_per_sector = fsopts->sectorsize; } else if (fsopts->sectorsize == -1) { fsopts->sectorsize = msdos_opt->bytes_per_sector; } else if (fsopts->sectorsize != msdos_opt->bytes_per_sector) { err(1, "inconsistent sectorsize -S %u" "!= -o bytes_per_sector %u", fsopts->sectorsize, msdos_opt->bytes_per_sector); } /* create image */ printf("Creating `%s'\n", image); if (mkfs_msdos(image, NULL, msdos_opt) == -1) return; fsopts->fd = open(image, O_RDWR); vp.fs = fsopts; if ((pmp = msdosfs_mount(&vp, 0)) == NULL) err(1, "msdosfs_mount"); if (msdosfs_root(pmp, &rootvp) != 0) err(1, "msdosfs_root"); /* populate image */ printf("Populating `%s'\n", image); if (msdos_populate_dir(dir, VTODE(&rootvp), root, root, fsopts) == -1) errx(1, "Image file `%s' not created.", image); bcleanup(); printf("Image `%s' complete\n", image); } static int msdos_populate_dir(const char *path, struct denode *dir, fsnode *root, fsnode *parent, fsinfo_t *fsopts) { fsnode *cur; char pbuf[MAXPATHLEN]; assert(dir != NULL); assert(root != NULL); assert(fsopts != NULL); for (cur = root->next; cur != NULL; cur = cur->next) { if ((size_t)snprintf(pbuf, sizeof(pbuf), "%s/%s", path, cur->name) >= sizeof(pbuf)) { warnx("path %s too long", pbuf); return -1; } if ((cur->inode->flags & FI_ALLOCATED) == 0) { cur->inode->flags |= FI_ALLOCATED; if (cur != root) { fsopts->curinode++; cur->inode->ino = fsopts->curinode; cur->parent = parent; } } if (cur->inode->flags & FI_WRITTEN) { continue; // hard link } cur->inode->flags |= FI_WRITTEN; if (cur->child) { struct denode *de; if ((de = msdosfs_mkdire(pbuf, dir, cur)) == NULL) { warn("msdosfs_mkdire %s", pbuf); return -1; } if (msdos_populate_dir(pbuf, de, cur->child, cur, fsopts) == -1) { warn("msdos_populate_dir %s", pbuf); return -1; } continue; } else if (!S_ISREG(cur->type)) { warnx("skipping non-regular file %s/%s", cur->path, cur->name); continue; } if (msdosfs_mkfile(pbuf, dir, cur) == NULL) { warn("msdosfs_mkfile %s", pbuf); return -1; } } return 0; }