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authorMarius Strobl <marius@FreeBSD.org>2024-01-14 08:31:26 +0000
committerMarius Strobl <marius@FreeBSD.org>2024-01-14 21:22:21 +0000
commit03e8d25b1f9218dcd52d13819dda14dbbaf622b7 (patch)
tree86a2860e48bc1c6e6bd0d29867665352614a2632 /sys/geom
parent751c323b829c36ca63a123a02a51f971ca3bd409 (diff)
downloadsrc-03e8d25b1f9218dcd52d13819dda14dbbaf622b7.tar.gz
src-03e8d25b1f9218dcd52d13819dda14dbbaf622b7.zip
Diffstat (limited to 'sys/geom')
-rw-r--r--sys/geom/geom_map.c392
1 files changed, 0 insertions, 392 deletions
diff --git a/sys/geom/geom_map.c b/sys/geom/geom_map.c
deleted file mode 100644
index 65c313fcfa0c..000000000000
--- a/sys/geom/geom_map.c
+++ /dev/null
@@ -1,392 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2010-2011 Aleksandr Rybalko <ray@dlink.ua>
- * based on geom_redboot.c
- * Copyright (c) 2009 Sam Leffler, Errno Consulting
- * 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,
- * without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
- * redistribution must be conditioned upon including a substantially
- * similar Disclaimer requirement for further binary redistribution.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
- */
-
-#include <sys/param.h>
-#include <sys/bus.h>
-#include <sys/errno.h>
-#include <sys/endian.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/fcntl.h>
-#include <sys/malloc.h>
-#include <sys/bio.h>
-#include <sys/lock.h>
-#include <sys/mutex.h>
-#include <sys/sbuf.h>
-
-#include <geom/geom.h>
-#include <geom/geom_slice.h>
-
-#define MAP_CLASS_NAME "MAP"
-#define MAP_MAXSLICE 64
-#define MAP_MAX_MARKER_LEN 64
-
-struct g_map_softc {
- off_t offset[MAP_MAXSLICE]; /* offset in flash */
- off_t size[MAP_MAXSLICE]; /* image size in bytes */
- off_t entry[MAP_MAXSLICE];
- off_t dsize[MAP_MAXSLICE];
- uint8_t readonly[MAP_MAXSLICE];
- g_access_t *parent_access;
-};
-
-static int
-g_map_access(struct g_provider *pp, int dread, int dwrite, int dexcl)
-{
- struct g_geom *gp;
- struct g_slicer *gsp;
- struct g_map_softc *sc;
-
- gp = pp->geom;
- gsp = gp->softc;
- sc = gsp->softc;
-
- if (dwrite > 0 && sc->readonly[pp->index])
- return (EPERM);
-
- return (sc->parent_access(pp, dread, dwrite, dexcl));
-}
-
-static int
-g_map_start(struct bio *bp)
-{
- struct g_provider *pp;
- struct g_geom *gp;
- struct g_map_softc *sc;
- struct g_slicer *gsp;
- int idx;
-
- pp = bp->bio_to;
- idx = pp->index;
- gp = pp->geom;
- gsp = gp->softc;
- sc = gsp->softc;
-
- if (bp->bio_cmd == BIO_GETATTR) {
- if (g_handleattr_int(bp, MAP_CLASS_NAME "::entry",
- sc->entry[idx])) {
- return (1);
- }
- if (g_handleattr_int(bp, MAP_CLASS_NAME "::dsize",
- sc->dsize[idx])) {
- return (1);
- }
- }
-
- return (0);
-}
-
-static void
-g_map_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
- struct g_consumer *cp __unused, struct g_provider *pp)
-{
- struct g_map_softc *sc;
- struct g_slicer *gsp;
-
- gsp = gp->softc;
- sc = gsp->softc;
- g_slice_dumpconf(sb, indent, gp, cp, pp);
- if (pp != NULL) {
- if (indent == NULL) {
- sbuf_printf(sb, " entry %jd", (intmax_t)sc->entry[pp->index]);
- sbuf_printf(sb, " dsize %jd", (intmax_t)sc->dsize[pp->index]);
- } else {
- sbuf_printf(sb, "%s<entry>%jd</entry>\n", indent,
- (intmax_t)sc->entry[pp->index]);
- sbuf_printf(sb, "%s<dsize>%jd</dsize>\n", indent,
- (intmax_t)sc->dsize[pp->index]);
- }
- }
-}
-
-static int
-find_marker(struct g_consumer *cp, const char *line, off_t *offset)
-{
- off_t search_start, search_offset, search_step;
- size_t sectorsize;
- uint8_t *buf;
- char *op, key[MAP_MAX_MARKER_LEN], search_key[MAP_MAX_MARKER_LEN];
- int ret, c;
-
- /* Try convert to numeric first */
- *offset = strtouq(line, &op, 0);
- if (*op == '\0')
- return (0);
-
- bzero(search_key, MAP_MAX_MARKER_LEN);
- sectorsize = cp->provider->sectorsize;
-
-#ifdef __LP64__
- ret = sscanf(line, "search:%li:%li:%63c",
- &search_start, &search_step, search_key);
-#else
- ret = sscanf(line, "search:%qi:%qi:%63c",
- &search_start, &search_step, search_key);
-#endif
- if (ret < 3)
- return (1);
-
- if (bootverbose) {
- printf("MAP: search %s for key \"%s\" from 0x%jx, step 0x%jx\n",
- cp->geom->name, search_key, (intmax_t)search_start, (intmax_t)search_step);
- }
-
- /* error if search_key is empty */
- if (strlen(search_key) < 1)
- return (1);
-
- /* sscanf successful, and we start marker search */
- for (search_offset = search_start;
- search_offset < cp->provider->mediasize;
- search_offset += search_step) {
- g_topology_unlock();
- buf = g_read_data(cp, rounddown(search_offset, sectorsize),
- roundup(strlen(search_key), sectorsize), NULL);
- g_topology_lock();
-
- /*
- * Don't bother doing the rest if buf==NULL; eg derefencing
- * to assemble 'key'.
- */
- if (buf == NULL)
- continue;
-
- /* Wildcard, replace '.' with byte from data */
- /* TODO: add support wildcard escape '\.' */
-
- strncpy(key, search_key, MAP_MAX_MARKER_LEN);
-
- for (c = 0; c < MAP_MAX_MARKER_LEN && key[c]; c++) {
- if (key[c] == '.') {
- key[c] = ((char *)(buf +
- (search_offset % sectorsize)))[c];
- }
- }
-
- /* Assume buf != NULL here */
- if (memcmp(buf + search_offset % sectorsize,
- key, strlen(search_key)) == 0) {
- g_free(buf);
- /* Marker found, so return their offset */
- *offset = search_offset;
- return (0);
- }
- g_free(buf);
- }
-
- /* Marker not found */
- return (1);
-}
-
-static int
-g_map_parse_part(struct g_class *mp, struct g_provider *pp,
- struct g_consumer *cp, struct g_geom *gp, struct g_map_softc *sc, int i)
-{
- const char *value, *name;
- char *op;
- off_t start, end, offset, size, dsize;
- int readonly, ret;
-
- /* hint.map.0.at="cfid0" - bind to cfid0 media */
- if (resource_string_value("map", i, "at", &value) != 0)
- return (1);
-
- /* Check if this correct provider */
- if (strcmp(pp->name, value) != 0)
- return (1);
-
- /*
- * hint.map.0.name="uboot" - name of partition, will be available
- * as "/dev/map/uboot"
- */
- if (resource_string_value("map", i, "name", &name) != 0) {
- if (bootverbose)
- printf("MAP: hint.map.%d has no name\n", i);
- return (1);
- }
-
- /*
- * hint.map.0.start="0x00010000" - partition start at 0x00010000
- * or hint.map.0.start="search:0x00010000:0x200:marker text" -
- * search for text "marker text", begin at 0x10000, step 0x200
- * until we found marker or end of media reached
- */
- if (resource_string_value("map", i, "start", &value) != 0) {
- if (bootverbose)
- printf("MAP: \"%s\" has no start value\n", name);
- return (1);
- }
- if (find_marker(cp, value, &start) != 0) {
- if (bootverbose) {
- printf("MAP: \"%s\" can't parse/use start value\n",
- name);
- }
- return (1);
- }
-
- /* like "start" */
- if (resource_string_value("map", i, "end", &value) != 0) {
- if (bootverbose)
- printf("MAP: \"%s\" has no end value\n", name);
- return (1);
- }
- if (find_marker(cp, value, &end) != 0) {
- if (bootverbose) {
- printf("MAP: \"%s\" can't parse/use end value\n",
- name);
- }
- return (1);
- }
-
- /* variable readonly optional, disable write access */
- if (resource_int_value("map", i, "readonly", &readonly) != 0)
- readonly = 0;
-
- /* offset of partition data, from partition begin */
- if (resource_string_value("map", i, "offset", &value) == 0) {
- offset = strtouq(value, &op, 0);
- if (*op != '\0') {
- if (bootverbose) {
- printf("MAP: \"%s\" can't parse offset\n",
- name);
- }
- return (1);
- }
- } else {
- offset = 0;
- }
-
- /* partition data size */
- if (resource_string_value("map", i, "dsize", &value) == 0) {
- dsize = strtouq(value, &op, 0);
- if (*op != '\0') {
- if (bootverbose) {
- printf("MAP: \"%s\" can't parse dsize\n",
- name);
- }
- return (1);
- }
- } else {
- dsize = 0;
- }
-
- size = end - start;
- if (dsize == 0)
- dsize = size - offset;
-
- /* end is 0 or size is 0, No MAP - so next */
- if (end < start) {
- if (bootverbose) {
- printf("MAP: \"%s\", \"end\" less than "
- "\"start\"\n", name);
- }
- return (1);
- }
-
- if (offset + dsize > size) {
- if (bootverbose) {
- printf("MAP: \"%s\", \"dsize\" bigger than "
- "partition - offset\n", name);
- }
- return (1);
- }
-
- ret = g_slice_config(gp, i, G_SLICE_CONFIG_SET, start + offset,
- dsize, cp->provider->sectorsize, "map/%s", name);
- if (ret != 0) {
- if (bootverbose) {
- printf("MAP: g_slice_config returns %d for \"%s\"\n",
- ret, name);
- }
- return (1);
- }
-
- if (bootverbose) {
- printf("MAP: %s: %jxx%jx, data=%jxx%jx "
- "\"/dev/map/%s\"\n",
- cp->geom->name, (intmax_t)start, (intmax_t)size, (intmax_t)offset,
- (intmax_t)dsize, name);
- }
-
- sc->offset[i] = start;
- sc->size[i] = size;
- sc->entry[i] = offset;
- sc->dsize[i] = dsize;
- sc->readonly[i] = readonly ? 1 : 0;
-
- return (0);
-}
-
-static struct g_geom *
-g_map_taste(struct g_class *mp, struct g_provider *pp, int insist __unused)
-{
- struct g_map_softc *sc;
- struct g_consumer *cp;
- struct g_geom *gp;
- int i;
-
- g_trace(G_T_TOPOLOGY, "map_taste(%s,%s)", mp->name, pp->name);
- g_topology_assert();
- if (strcmp(pp->geom->class->name, MAP_CLASS_NAME) == 0)
- return (NULL);
-
- gp = g_slice_new(mp, MAP_MAXSLICE, pp, &cp, &sc, sizeof(*sc),
- g_map_start);
- if (gp == NULL)
- return (NULL);
-
- /* interpose our access method */
- sc->parent_access = gp->access;
- gp->access = g_map_access;
-
- for (i = 0; i < MAP_MAXSLICE; i++)
- g_map_parse_part(mp, pp, cp, gp, sc, i);
-
- g_access(cp, -1, 0, 0);
- if (LIST_EMPTY(&gp->provider)) {
- if (bootverbose)
- printf("MAP: No valid partition found at %s\n", pp->name);
- g_slice_spoiled(cp);
- return (NULL);
- }
- return (gp);
-}
-
-static struct g_class g_map_class = {
- .name = MAP_CLASS_NAME,
- .version = G_VERSION,
- .taste = g_map_taste,
- .dumpconf = g_map_dumpconf,
-};
-DECLARE_GEOM_CLASS(g_map_class, g_map);
-MODULE_VERSION(geom_map, 0);