diff options
Diffstat (limited to 'usr.bin/mkimg/apm.c')
| -rw-r--r-- | usr.bin/mkimg/apm.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/usr.bin/mkimg/apm.c b/usr.bin/mkimg/apm.c new file mode 100644 index 0000000..26646f9 --- /dev/null +++ b/usr.bin/mkimg/apm.c @@ -0,0 +1,119 @@ +/*- + * Copyright (c) 2014 Juniper Networks, Inc. + * 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 AUTHOR 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 AUTHOR 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/apm.h> +#include <sys/endian.h> +#include <sys/errno.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "mkimg.h" +#include "scheme.h" + +static struct mkimg_alias apm_aliases[] = { + { ALIAS_FREEBSD, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD) }, + { ALIAS_FREEBSD_NANDFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_NANDFS) }, + { ALIAS_FREEBSD_SWAP, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_SWAP) }, + { ALIAS_FREEBSD_UFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_UFS) }, + { ALIAS_FREEBSD_VINUM, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_VINUM) }, + { ALIAS_FREEBSD_ZFS, ALIAS_PTR2TYPE(APM_ENT_TYPE_FREEBSD_ZFS) }, + { ALIAS_NONE, 0 } +}; + +static u_int +apm_metadata(u_int where) +{ + u_int secs; + + secs = (where == SCHEME_META_IMG_START) ? nparts + 2 : 0; + return (secs); +} + +static int +apm_write(int fd __unused, lba_t imgsz __unused, void *bootcode __unused) +{ + u_char *buf; + struct apm_ddr *ddr; + struct apm_ent *ent; + struct part *part; + ssize_t nbytes; + int error; + + buf = calloc(nparts + 2, secsz); + if (buf == NULL) + return (ENOMEM); + ddr = (void *)buf; + be16enc(&ddr->ddr_sig, APM_DDR_SIG); + be16enc(&ddr->ddr_blksize, secsz); + be32enc(&ddr->ddr_blkcount, imgsz); + + /* partition entry for the partition table itself. */ + ent = (void *)(buf + secsz); + be16enc(&ent->ent_sig, APM_ENT_SIG); + be32enc(&ent->ent_pmblkcnt, nparts + 1); + be32enc(&ent->ent_start, 1); + be32enc(&ent->ent_size, nparts + 1); + strcpy(ent->ent_type, APM_ENT_TYPE_SELF); + strcpy(ent->ent_name, "Apple"); + + STAILQ_FOREACH(part, &partlist, link) { + ent = (void *)(buf + (part->index + 2) * secsz); + be16enc(&ent->ent_sig, APM_ENT_SIG); + be32enc(&ent->ent_pmblkcnt, nparts + 1); + be32enc(&ent->ent_start, part->block); + be32enc(&ent->ent_size, part->size); + strcpy(ent->ent_type, ALIAS_TYPE2PTR(part->type)); + if (part->label != NULL) + strcpy(ent->ent_name, part->label); + } + + error = mkimg_seek(fd, 0); + if (error == 0) { + nbytes = (nparts + 2) * secsz; + if (write(fd, buf, nbytes) != nbytes) + error = errno; + } + free(buf); + return (error); +} + +static struct mkimg_scheme apm_scheme = { + .name = "apm", + .description = "Apple Partition Map", + .aliases = apm_aliases, + .metadata = apm_metadata, + .write = apm_write, + .nparts = 4096, + .labellen = APM_ENT_NAMELEN - 1, + .maxsecsz = 4096 +}; + +SCHEME_DEFINE(apm_scheme); |
