Dmitry V. Levin
7fa3d78319
Remove temporary types created for transition from long to kernel_ulong_t. Automatically replace kernel_scno_t and kernel_ureg_t with kernel_ulong_t using $ git grep -El 'kernel_(scno|ureg)_t' | xargs sed -ri 's/kernel_(scno|ureg)_t/kernel_ulong_t/g' * kernel_types.h (kernel_scno_t, kernel_ureg_t): Remove. All users updated.
250 lines
6.4 KiB
C
250 lines
6.4 KiB
C
/*
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* Copyright (c) 2016 Jeff Mahoney <jeffm@suse.com>
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include <linux/ioctl.h>
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#include <linux/fs.h>
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#ifdef HAVE_LINUX_FIEMAP_H
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# include <linux/fiemap.h>
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# include "xlat/fiemap_flags.h"
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# include "xlat/fiemap_extent_flags.h"
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#endif
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#ifndef FICLONE
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# define FICLONE _IOW(0x94, 9, int)
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#endif
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#ifndef FICLONERANGE
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# define FICLONERANGE _IOW(0x94, 13, struct file_clone_range)
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struct file_clone_range {
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int64_t src_fd;
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uint64_t src_offset;
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uint64_t src_length;
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uint64_t dest_offset;
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};
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#endif
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#ifndef FIDEDUPERANGE
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# define FIDEDUPERANGE _IOWR(0x94, 54, struct file_dedupe_range)
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struct file_dedupe_range_info {
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int64_t dest_fd; /* in - destination file */
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uint64_t dest_offset; /* in - start of extent in destination */
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uint64_t bytes_deduped; /* out - total # of bytes we were able
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* to dedupe from this file. */
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/* status of this dedupe operation:
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* < 0 for error
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* == FILE_DEDUPE_RANGE_SAME if dedupe succeeds
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* == FILE_DEDUPE_RANGE_DIFFERS if data differs
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*/
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int32_t status; /* out - see above description */
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uint32_t reserved; /* must be zero */
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};
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struct file_dedupe_range {
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uint64_t src_offset; /* in - start of extent in source */
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uint64_t src_length; /* in - length of extent */
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uint16_t dest_count; /* in - total elements in info array */
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uint16_t reserved1; /* must be zero */
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uint32_t reserved2; /* must be zero */
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struct file_dedupe_range_info info[0];
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};
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#endif
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static bool
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print_file_dedupe_range_info(struct tcb *tcp, void *elem_buf,
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size_t elem_size, void *data)
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{
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const struct file_dedupe_range_info *info = elem_buf;
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unsigned int *count = data;
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if (count) {
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if (*count == 0) {
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tprints("...");
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return false;
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}
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--*count;
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}
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if (entering(tcp)) {
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tprints("{dest_fd=");
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printfd(tcp, info->dest_fd);
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tprintf(", dest_offset=%" PRIu64 "}",
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(uint64_t) info->dest_offset);
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} else {
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tprintf("{bytes_deduped=%" PRIu64 ", status=%d}",
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(uint64_t) info->bytes_deduped, info->status);
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}
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return true;
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}
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#ifdef HAVE_LINUX_FIEMAP_H
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static bool
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print_fiemap_extent(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
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{
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const struct fiemap_extent *fe = elem_buf;
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tprintf("{fe_logical=%" PRI__u64
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", fe_physical=%" PRI__u64
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", fe_length=%" PRI__u64 ", ",
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fe->fe_logical, fe->fe_physical, fe->fe_length);
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printflags64(fiemap_extent_flags, fe->fe_flags,
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"FIEMAP_EXTENT_???");
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tprints("}");
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return true;
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}
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#endif /* HAVE_LINUX_FIEMAP_H */
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int
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file_ioctl(struct tcb *const tcp, const unsigned int code,
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const kernel_ulong_t arg)
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{
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switch (code) {
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case FICLONE: /* W */
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tprintf(", %d", (int) arg);
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break;
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case FICLONERANGE: { /* W */
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struct file_clone_range args;
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &args))
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break;
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tprints("{src_fd=");
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printfd(tcp, args.src_fd);
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tprintf(", src_offset=%" PRIu64
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", src_length=%" PRIu64
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", dest_offset=%" PRIu64 "}",
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(uint64_t) args.src_offset,
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(uint64_t) args.src_length,
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(uint64_t) args.dest_offset);
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break;
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}
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case FIDEDUPERANGE: { /* RW */
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struct file_dedupe_range args;
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struct file_dedupe_range_info info;
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unsigned int *limit = NULL;
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unsigned int count = 2;
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bool rc;
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if (entering(tcp))
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tprints(", ");
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else if (syserror(tcp))
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break;
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else
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tprints(" => ");
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if (umove_or_printaddr(tcp, arg, &args))
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break;
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tprints("{");
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if (entering(tcp)) {
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tprintf("src_offset=%" PRIu64
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", src_length=%" PRIu64
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", dest_count=%hu, ",
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(uint64_t) args.src_offset,
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(uint64_t) args.src_length,
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(uint16_t) args.dest_count);
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}
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tprints("info=");
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/* Limit how many elements we print in abbrev mode. */
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if (abbrev(tcp) && args.dest_count > count)
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limit = &count;
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rc = print_array(tcp, arg + offsetof(typeof(args), info),
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args.dest_count, &info, sizeof(info),
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umoven_or_printaddr,
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print_file_dedupe_range_info, limit);
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tprints("}");
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if (!rc || exiting(tcp))
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break;
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return 0;
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}
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#ifdef HAVE_LINUX_FIEMAP_H
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case FS_IOC_FIEMAP: {
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struct fiemap args;
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if (entering(tcp))
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tprints(", ");
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else if (syserror(tcp))
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break;
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else
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tprints(" => ");
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if (umove_or_printaddr(tcp, arg, &args))
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break;
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if (entering(tcp)) {
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tprintf("{fm_start=%" PRI__u64 ", "
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"fm_length=%" PRI__u64 ", "
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"fm_flags=",
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args.fm_start, args.fm_length);
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printflags64(fiemap_flags, args.fm_flags,
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"FIEMAP_FLAG_???");
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tprintf(", fm_extent_count=%u}", args.fm_extent_count);
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return 0;
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}
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tprints("{fm_flags=");
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printflags64(fiemap_flags, args.fm_flags,
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"FIEMAP_FLAG_???");
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tprintf(", fm_mapped_extents=%u",
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args.fm_mapped_extents);
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tprints(", fm_extents=");
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if (abbrev(tcp)) {
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tprints("...");
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} else {
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struct fiemap_extent fe;
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print_array(tcp,
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arg + offsetof(typeof(args), fm_extents),
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args.fm_mapped_extents, &fe, sizeof(fe),
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umoven_or_printaddr,
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print_fiemap_extent, 0);
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}
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tprints("}");
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break;
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}
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#endif /* HAVE_LINUX_FIEMAP_H */
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default:
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return RVAL_DECODED;
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};
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return RVAL_DECODED | 1;
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}
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