--- /dev/null
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * Written by Mike Frysinger <vapier@gentoo.org>.
+ *
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "defs.h"
+
+#include <sys/ioctl.h>
+
+#include <linux/loop.h>
+
+static const struct xlat loop_flags_options[] = {
+ { LO_FLAGS_READ_ONLY, "LO_FLAGS_READ_ONLY" },
+ { LO_FLAGS_AUTOCLEAR, "LO_FLAGS_AUTOCLEAR" },
+#ifdef LO_FLAGS_PARTSCAN
+ { LO_FLAGS_PARTSCAN, "LO_FLAGS_PARTSCAN" },
+#endif
+ { 0, NULL },
+};
+
+static const struct xlat loop_crypt_type_options[] = {
+ { LO_CRYPT_NONE, "LO_CRYPT_NONE" },
+ { LO_CRYPT_XOR, "LO_CRYPT_XOR" },
+ { LO_CRYPT_DES, "LO_CRYPT_DES" },
+ { LO_CRYPT_FISH2, "LO_CRYPT_FISH2" },
+ { LO_CRYPT_BLOW, "LO_CRYPT_BLOW" },
+ { LO_CRYPT_CAST128, "LO_CRYPT_CAST128" },
+ { LO_CRYPT_IDEA, "LO_CRYPT_IDEA" },
+ { LO_CRYPT_DUMMY, "LO_CRYPT_DUMMY" },
+ { LO_CRYPT_SKIPJACK, "LO_CRYPT_SKIPJACK" },
+ { LO_CRYPT_CRYPTOAPI, "LO_CRYPT_CRYPTOAPI" },
+ { 0, NULL },
+};
+
+int loop_ioctl(struct tcb *tcp, long code, long arg)
+{
+ struct loop_info info;
+ struct loop_info64 info64;
+ char *s = alloca((LO_NAME_SIZE + LO_KEY_SIZE) * 4);
+
+ if (entering(tcp))
+ return 0;
+
+ switch (code) {
+
+ case LOOP_SET_STATUS:
+ case LOOP_GET_STATUS:
+ if (!verbose(tcp) || umove(tcp, arg, &info) < 0)
+ return 0;
+
+ tprintf(", {number=%i", info.lo_number);
+
+ if (!abbrev(tcp)) {
+ tprintf(", device=%#lx, inode=%lu, rdevice=%#lx",
+ (unsigned long) info.lo_device,
+ info.lo_inode,
+ (unsigned long) info.lo_rdevice);
+ }
+
+ tprintf(", offset=%#x", info.lo_offset);
+
+ if (!abbrev(tcp) || info.lo_encrypt_type != LO_CRYPT_NONE) {
+ tprints(", encrypt_type=");
+ printxval(loop_crypt_type_options, info.lo_encrypt_type,
+ "LO_CRYPT_???");
+ tprintf(", encrypt_key_size=%i", info.lo_encrypt_key_size);
+ }
+
+ tprints(", flags=");
+ printflags(loop_flags_options, info.lo_flags, "LO_FLAGS_???");
+
+ string_quote(info.lo_name, s, -1, LO_NAME_SIZE);
+ tprintf(", name=%s", s);
+
+ if (!abbrev(tcp) || info.lo_encrypt_type != LO_CRYPT_NONE) {
+ string_quote((void *) info.lo_encrypt_key, s, 0, LO_KEY_SIZE);
+ tprintf(", encrypt_key=%s", s);
+ }
+
+ if (!abbrev(tcp))
+ tprintf(", init={%#lx, %#lx}"
+ ", reserved={%#x, %#x, %#x, %#x}}",
+ info.lo_init[0], info.lo_init[1],
+ info.reserved[0], info.reserved[1],
+ info.reserved[2], info.reserved[3]);
+ else
+ tprints(", ...}");
+
+ return 1;
+
+ case LOOP_SET_STATUS64:
+ case LOOP_GET_STATUS64:
+ if (!verbose(tcp) || umove(tcp, arg, &info64) < 0)
+ return 0;
+
+ tprints(", {");
+
+ if (!abbrev(tcp)) {
+ tprintf("device=%" PRIu64 ", inode=%" PRIu64 ", "
+ "rdevice=%" PRIu64 ", offset=%#" PRIx64 ", "
+ "sizelimit=%" PRIu64 ", number=%" PRIu32,
+ (uint64_t) info64.lo_device,
+ (uint64_t) info64.lo_inode,
+ (uint64_t) info64.lo_rdevice,
+ (uint64_t) info64.lo_offset,
+ (uint64_t) info64.lo_sizelimit,
+ (uint32_t) info64.lo_number);
+ } else {
+ tprintf("offset=%#" PRIx64 ", number=%" PRIu32,
+ (uint64_t) info64.lo_offset,
+ (uint32_t) info64.lo_number);
+ }
+
+ if (!abbrev(tcp) || info64.lo_encrypt_type != LO_CRYPT_NONE) {
+ tprints(", encrypt_type=");
+ printxval(loop_crypt_type_options, info64.lo_encrypt_type,
+ "LO_CRYPT_???");
+ tprintf(", encrypt_key_size=%" PRIu32,
+ info64.lo_encrypt_key_size);
+ }
+
+ tprints(", flags=");
+ printflags(loop_flags_options, info64.lo_flags, "LO_FLAGS_???");
+
+ string_quote((void *) info64.lo_file_name, s, -1, LO_NAME_SIZE);
+ tprintf(", file_name=%s", s);
+
+ if (!abbrev(tcp) || info64.lo_encrypt_type != LO_CRYPT_NONE) {
+ string_quote((void *) info64.lo_crypt_name, s, -1, LO_NAME_SIZE);
+ tprintf(", crypt_name=%s", s);
+ string_quote((void *) info64.lo_encrypt_key, s, 0, LO_KEY_SIZE);
+ tprintf(", encrypt_key=%s", s);
+ }
+
+ if (!abbrev(tcp))
+ tprintf(", init={%#" PRIx64 ", %#" PRIx64 "}}",
+ (uint64_t) info64.lo_init[0],
+ (uint64_t) info64.lo_init[1]);
+ else
+ tprints(", ...}");
+
+ return 1;
+
+ case LOOP_CLR_FD:
+ case LOOP_SET_CAPACITY:
+#ifdef LOOP_CTL_GET_FREE
+ /* newer loop-control stuff */
+ case LOOP_CTL_GET_FREE:
+#endif
+ /* Takes no arguments */
+ return 1;
+
+ case LOOP_SET_FD:
+ case LOOP_CHANGE_FD:
+#ifdef LOOP_CTL_ADD
+ /* newer loop-control stuff */
+ case LOOP_CTL_ADD:
+ case LOOP_CTL_REMOVE:
+#endif
+ /* These take simple args, so let default printer handle it */
+
+ default:
+ return 0;
+ }
+}
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