diff options
Diffstat (limited to 'usr.sbin/fstyp/geli.c')
| -rw-r--r-- | usr.sbin/fstyp/geli.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/usr.sbin/fstyp/geli.c b/usr.sbin/fstyp/geli.c new file mode 100644 index 0000000..59e8653 --- /dev/null +++ b/usr.sbin/fstyp/geli.c @@ -0,0 +1,71 @@ +/*- + * Copyright (c) 2015 Allan Jude <allanjude@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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/disk.h> +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <geom/eli/g_eli.h> + +#include "fstyp.h" + +int +fstyp_geli(FILE *fp, char *label __unused, size_t labelsize __unused) +{ + int error; + off_t mediasize; + u_int sectorsize; + struct g_eli_metadata md; + u_char *buf; + + error = ioctl(fileno(fp), DIOCGMEDIASIZE, &mediasize); + if (error != 0) + return (1); + error = ioctl(fileno(fp), DIOCGSECTORSIZE, §orsize); + if (error != 0) + return (1); + buf = (u_char *)read_buf(fp, mediasize - sectorsize, sectorsize); + if (buf == NULL) + goto gelierr; + error = eli_metadata_decode(buf, &md); + if (error) + goto gelierr; + + if (strcmp(md.md_magic, G_ELI_MAGIC) == 0) { + free(buf); + return (0); + } + +gelierr: + free(buf); + + return (1); +} |
