a82e3a8b24
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 Stanislav Sedov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <geom/geom.h>
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#include <geom/label/g_label.h>
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#define EXT2FS_SB_OFFSET 1024
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#define EXT2_SUPER_MAGIC 0xef53
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#define EXT2_DYNAMIC_REV 1
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typedef struct e2sb {
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uint8_t fake1[56];
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uint16_t s_magic;
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uint8_t fake2[18];
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uint32_t s_rev_level;
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uint8_t fake3[40];
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char s_volume_name[16];
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} e2sb_t;
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static void
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g_label_ext2fs_taste(struct g_consumer *cp, char *label, size_t size)
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{
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struct g_provider *pp;
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e2sb_t *fs;
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char *s_volume_name;
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g_topology_assert_not();
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pp = cp->provider;
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label[0] = '\0';
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if ((EXT2FS_SB_OFFSET % pp->sectorsize) != 0)
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return;
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fs = (e2sb_t *)g_read_data(cp, EXT2FS_SB_OFFSET, pp->sectorsize, NULL);
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if (fs == NULL)
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return;
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/* Check for magic and versio n*/
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if (fs->s_magic == EXT2_SUPER_MAGIC &&
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fs->s_rev_level == EXT2_DYNAMIC_REV) {
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G_LABEL_DEBUG(1, "ext2fs file system detected on %s.",
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pp->name);
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} else {
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goto exit_free;
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}
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s_volume_name = fs->s_volume_name;
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/* Terminate label */
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s_volume_name[sizeof(fs->s_volume_name) - 1] = '\0';
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if (s_volume_name[0] == '/')
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s_volume_name += 1;
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/* Check for volume label */
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if (s_volume_name[0] == '\0')
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goto exit_free;
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strlcpy(label, s_volume_name, size);
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exit_free:
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g_free(fs);
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}
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struct g_label_desc g_label_ext2fs = {
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.ld_taste = g_label_ext2fs_taste,
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.ld_dir = "ext2fs",
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.ld_enabled = 1
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};
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G_LABEL_INIT(ext2fs, g_label_ext2fs, "Create device nodes for EXT2FS volumes");
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