diff options
Diffstat (limited to 'usr.sbin/isfctl/isfctl.c')
-rw-r--r-- | usr.sbin/isfctl/isfctl.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/usr.sbin/isfctl/isfctl.c b/usr.sbin/isfctl/isfctl.c new file mode 100644 index 0000000..af99093 --- /dev/null +++ b/usr.sbin/isfctl/isfctl.c @@ -0,0 +1,115 @@ +/*- + * Copyright (c) 2012 SRI International + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) + * ("CTSRD"), as part of the DARPA CRASH research programme. + * + * 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. + * + * $FreeBSD$ + */ + +#include <sys/types.h> +#include <sys/ioctl.h> + +#include <err.h> +#include <fcntl.h> +#include <inttypes.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +/* XXXBED: should install and include sys/dev/isf.h */ +struct isf_range { + off_t ir_off; /* Offset of range to delete (set to 0xFF) */ + size_t ir_size; /* Size of range */ +}; + +#define ISF_ERASE _IOW('I', 1, struct isf_range) + +#define ISF_ERASE_BLOCK (128 * 1024) + +static enum {UNSET, ERASE} action = UNSET; + +static void +usage(void) +{ + fprintf(stderr, "usage: isfctl <device> erase <offset> <size>\n"); + exit(1); +} + +int +main(int argc, char **argv) +{ + struct isf_range ir; + int fd, i; + char *p, *dev; + + if (argc < 2) + usage(); + argc--; argv++; + + if (*argv[0] == '/') + dev = argv[0]; + else + asprintf(&dev, "/dev/%s", argv[0]); + argc--; argv++; + fd = open(dev, O_RDWR); + if (fd < 0) + err(1, "unable to open device -- %s", dev); + + if (strcmp(argv[0], "erase") == 0) { + if (argc != 3) + usage(); + action = ERASE; + ir.ir_off = strtol(argv[1], &p, 0); + if (*p) + errx(1, "invalid offset -- %s", argv[2]); + ir.ir_size = strtol(argv[2], &p, 0); + if (*p) + errx(1, "invalid size -- %s", argv[3]); + /* + * If the user requests to delete less than 32K of space + * then assume that they want to delete a number of 128K + * blocks. + */ + if (ir.ir_size < 32 * 1024) + ir.ir_size *= 128 * 1024; + } + + switch (action) { + case ERASE: + i = ioctl(fd, ISF_ERASE, &ir); + if (i < 0) + err(1, "ioctl(%s, %jx, %zx)", dev, + (intmax_t)ir.ir_off, ir.ir_size); + break; + default: + usage(); + } + + close(fd); + return (0); +} |