]> granicus.if.org Git - strace/commitdiff
tests: add testing for btrfs ioctls
authorJeff Mahoney <jeffm@suse.com>
Wed, 18 May 2016 22:09:42 +0000 (18:09 -0400)
committerDmitry V. Levin <ldv@altlinux.org>
Tue, 24 May 2016 14:52:27 +0000 (14:52 +0000)
* tests/btrfs.c: New file.
* tests/btrfs.test: New test.
* tests/btrfs-v.test: Likewise.
* tests/.gitignore: Add btrfs.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add btrfs.test and btrfs-v.test.

tests/.gitignore
tests/Makefile.am
tests/btrfs-v.test [new file with mode: 0755]
tests/btrfs.c [new file with mode: 0644]
tests/btrfs.test [new file with mode: 0755]
tests/file_ioctl.c

index c35f2db9e5483ee4eba0d68a89443d6eaf343c5b..e58876eb090ad6149fa3eb356704e2d5a189fb7f 100644 (file)
@@ -16,6 +16,7 @@ attach-p-cmd-cmd
 attach-p-cmd-p
 bpf
 brk
+btrfs
 caps
 chmod
 chown
index 81ee401d385dd0de21cee97c512a2a52cf1598af..0cc1a472b40a9f02c77f538d10f2a3fe467449db 100644 (file)
@@ -71,6 +71,7 @@ check_PROGRAMS = \
        attach-p-cmd-p \
        bpf \
        brk \
+       btrfs \
        caps \
        chmod \
        chown \
@@ -364,6 +365,8 @@ DECODER_TESTS = \
        alarm.test \
        bpf.test \
        brk.test \
+       btrfs.test \
+       btrfs-v.test \
        caps.test \
        chmod.test \
        chown.test \
diff --git a/tests/btrfs-v.test b/tests/btrfs-v.test
new file mode 100755 (executable)
index 0000000..1ee17b4
--- /dev/null
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Check verbose decoding of btrfs ioctl
+
+. "${srcdir=.}/init.sh"
+
+run_prog ./btrfs -v > /dev/null
+run_strace -a16 -veioctl $args > "$EXP"
+check_prog grep
+grep -v '^ioctl([012],' < "$LOG" > "$OUT"
+match_diff "$OUT" "$EXP"
+
+rm -f "$EXP" "$OUT"
+
+exit 0
diff --git a/tests/btrfs.c b/tests/btrfs.c
new file mode 100644 (file)
index 0000000..72d817a
--- /dev/null
@@ -0,0 +1,1851 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <alloca.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <sys/ioctl.h>
+#include <sys/vfs.h>
+#include <sys/stat.h>
+#include <sys/fcntl.h>
+#include <fcntl.h>
+#include <linux/fs.h>
+#include <linux/btrfs.h>
+#include <linux/magic.h>
+#include <linux/fiemap.h>
+#include "config.h"
+#include "tests.h"
+#include "xlat.h"
+
+#include "xlat/btrfs_balance_args.h"
+#include "xlat/btrfs_balance_flags.h"
+#include "xlat/btrfs_balance_state.h"
+#include "xlat/btrfs_compress_types.h"
+#include "xlat/btrfs_defrag_flags.h"
+#include "xlat/btrfs_dev_stats_values.h"
+#include "xlat/btrfs_dev_stats_flags.h"
+#include "xlat/btrfs_qgroup_inherit_flags.h"
+#include "xlat/btrfs_qgroup_limit_flags.h"
+#include "xlat/btrfs_scrub_flags.h"
+#include "xlat/btrfs_send_flags.h"
+#include "xlat/btrfs_space_info_flags.h"
+#include "xlat/btrfs_snap_flags_v2.h"
+#include "xlat/btrfs_tree_objectids.h"
+#include "xlat/btrfs_features_compat.h"
+#include "xlat/btrfs_features_compat_ro.h"
+#include "xlat/btrfs_features_incompat.h"
+#include "xlat/btrfs_key_types.h"
+
+#include "xlat/fiemap_flags.h"
+#include "xlat/fiemap_extent_flags.h"
+
+#ifndef BTRFS_LABEL_SIZE
+#define BTRFS_LABEL_SIZE 256
+#endif
+
+#ifndef BTRFS_NAME_LEN
+#define BTRFS_NAME_LEN 255
+#endif
+
+static const char *btrfs_test_root;
+static int btrfs_test_dir_fd;
+static bool verbose = false;
+static bool write_ok = false;
+
+const unsigned char uuid_reference[BTRFS_UUID_SIZE] = {
+       0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
+       0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
+};
+
+const char uuid_reference_string[] = "01234567-89ab-cdef-fedc-ba9876543210";
+
+#ifndef BTRFS_IOC_GET_FEATURES
+#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
+                                   struct btrfs_ioctl_feature_flags)
+#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
+                                   struct btrfs_ioctl_feature_flags[2])
+#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
+                                   struct btrfs_ioctl_feature_flags[3])
+#endif
+
+#ifndef HAVE_STRUCT_BTRFS_IOCTL_FEATURE_FLAGS_COMPAT_FLAGS
+struct btrfs_ioctl_feature_flags {
+        uint64_t compat_flags;
+        uint64_t compat_ro_flags;
+        uint64_t incompat_flags;
+};
+#endif
+
+#ifndef HAVE_STRUCT_BTRFS_IOCTL_DEFRAG_RANGE_ARGS_START
+struct btrfs_ioctl_defrag_range_args {
+        uint64_t start;
+        uint64_t len;
+        uint64_t flags;
+        uint32_t extent_thresh;
+        uint32_t compress_type;
+        uint32_t unused[4];
+};
+#endif
+
+#ifndef FIDEDUPERANGE
+#define FIDEDUPERANGE   _IOWR(0x94, 54, struct file_dedupe_range)
+struct file_dedupe_range_info {
+       int64_t dest_fd;        /* in - destination file */
+       uint64_t dest_offset;   /* in - start of extent in destination */
+       uint64_t bytes_deduped; /* out - total # of bytes we were able
+                                * to dedupe from this file. */
+       /* status of this dedupe operation:
+        * < 0 for error
+        * == FILE_DEDUPE_RANGE_SAME if dedupe succeeds
+        * == FILE_DEDUPE_RANGE_DIFFERS if data differs
+        */
+       int32_t status;         /* out - see above description */
+       uint32_t reserved;      /* must be zero */
+};
+
+struct file_dedupe_range {
+       uint64_t src_offset;    /* in - start of extent in source */
+       uint64_t src_length;    /* in - length of extent */
+       uint16_t dest_count;    /* in - total elements in info array */
+       uint16_t reserved1;     /* must be zero */
+       uint32_t reserved2;     /* must be zero */
+       struct file_dedupe_range_info info[0];
+};
+#endif
+
+#ifndef BTRFS_IOC_TREE_SEARCH_V2
+#define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \
+                                           struct btrfs_ioctl_search_args_v2)
+struct btrfs_ioctl_search_args_v2 {
+       struct btrfs_ioctl_search_key key; /* in/out - search parameters */
+       uint64_t buf_size;                 /* in - size of buffer
+                                           * out - on EOVERFLOW: needed size
+                                           *       to store item */
+        uint64_t buf[0];                  /* out - found items */
+};
+#endif
+
+
+static const char *maybe_print_uint64max(uint64_t val)
+{
+       if (val == UINT64_MAX)
+               return " /* UINT64_MAX */";
+       return "";
+}
+
+/* takes highest valid flag bit */
+static uint64_t max_flags_plus_one(int bit)
+{
+       int i;
+       uint64_t val = 0;
+       if (bit == -1)
+               return 1;
+       for (i = 0; i <= bit + 1 && i < 64; i++)
+               val |= (1ULL << i);
+       return val;
+}
+
+/*
+ * Consumes no arguments, returns nothing:
+ *
+ * - BTRFS_IOC_TRANS_START
+ * - BTRFS_IOC_TRANS_END
+ */
+static void
+btrfs_test_trans_ioctls(void)
+{
+       ioctl(-1, BTRFS_IOC_TRANS_START, NULL);
+       printf("ioctl(-1, BTRFS_IOC_TRANS_START) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_TRANS_END, NULL);
+       printf("ioctl(-1, BTRFS_IOC_TRANS_END) = -1 EBADF (%m)\n");
+}
+
+/*
+ * Consumes no arguments, returns nothing:
+ * - BTRFS_IOC_SYNC
+ *
+ * Consumes argument, returns nothing
+ * - BTRFS_IOC_WAIT_SYNC
+ */
+static void
+btrfs_test_sync_ioctls(void)
+{
+       uint64_t u64val = 257;
+
+       ioctl(-1, BTRFS_IOC_SYNC, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SYNC) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_WAIT_SYNC, NULL);
+       printf("ioctl(-1, BTRFS_IOC_WAIT_SYNC, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_WAIT_SYNC, &u64val);
+       printf("ioctl(-1, BTRFS_IOC_WAIT_SYNC, [%" PRIu64
+              "]) = -1 EBADF (%m)\n", u64val);
+
+       /*
+        * The live test of BTRFS_IOC_SYNC happens as a part of the test
+        * for BTRFS_IOC_LOGICAL_INO
+        */
+}
+
+static void
+btrfs_print_qgroup_inherit(struct btrfs_qgroup_inherit *inherit)
+{
+       printf("{flags=");
+       printflags(btrfs_qgroup_inherit_flags, inherit->flags,
+                  "BTRFS_QGROUP_INHERIT_???");
+       printf(", num_qgroups=%" PRI__u64
+              ", num_ref_copies=%" PRI__u64
+              ", num_excl_copies=%" PRI__u64", lim={flags=",
+              inherit->num_qgroups, inherit->num_ref_copies,
+              inherit->num_excl_copies);
+       printflags(btrfs_qgroup_limit_flags,
+                  inherit->lim.flags,
+                  "BTRFS_QGROUP_LIMIT_???");
+       printf(", max_rfer=%" PRI__u64 ", max_excl=%" PRI__u64
+              ", rsv_rfer=%" PRI__u64 ", rsv_excl=%" PRI__u64
+              "}, qgroups=",
+              inherit->lim.max_rfer, inherit->lim.max_excl,
+              inherit->lim.rsv_rfer, inherit->lim.rsv_excl);
+       if (verbose) {
+               unsigned int i;
+               printf("[");
+               for (i = 0; i < inherit->num_qgroups; i++) {
+                       if (i > 0)
+                               printf(", ");
+                       printf("%" PRI__u64, inherit->qgroups[i]);
+               }
+               printf("]");
+       } else
+               printf("...");
+       printf("}");
+}
+
+
+static void
+btrfs_print_vol_args_v2(struct btrfs_ioctl_vol_args_v2 *args, int print_qgroups)
+{
+       printf("{fd=%lld, flags=", args->fd);
+       printflags(btrfs_snap_flags_v2, args->flags, "BTRFS_SUBVOL_???");
+
+       if (args->flags & BTRFS_SUBVOL_QGROUP_INHERIT) {
+               printf(", size=%" PRI__u64 ", qgroup_inherit=", args->size);
+               if (args->qgroup_inherit && print_qgroups)
+                       btrfs_print_qgroup_inherit(args->qgroup_inherit);
+               else if (args->qgroup_inherit)
+                       printf("%p", args->qgroup_inherit);
+               else
+                       printf("NULL");
+       }
+       printf(", name=\"%s\"}", args->name);
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_SNAP_CREATE
+ * - BTRFS_IOC_SUBVOL_CREATE
+ * - BTRFS_IOC_SNAP_DESTROY
+ * - BTRFS_IOC_DEFAULT_SUBVOL
+ *
+ * Consumes argument, returns u64:
+ * - BTRFS_IOC_SNAP_CREATE_V2
+ * - BTRFS_IOC_SUBVOL_CREATE_V2
+ */
+
+static void
+btrfs_test_subvol_ioctls(void)
+{
+       const char *subvol_name = "subvol-name";
+       char *long_subvol_name;
+       void *bad_pointer = (void *)0xdeadbeef;
+       uint64_t u64val = 0xdeadbeef;
+       struct btrfs_ioctl_vol_args vol_args = {};
+       struct btrfs_ioctl_vol_args_v2 vol_args_v2 = {
+               .fd = 2,
+               .flags = max_flags_plus_one(2),
+       };
+       struct btrfs_qgroup_inherit *inherit = NULL;
+
+       long_subvol_name = malloc(BTRFS_PATH_NAME_MAX);
+       if (!long_subvol_name)
+               perror_msg_and_fail("malloc failed");
+       memset(long_subvol_name, 'f', BTRFS_PATH_NAME_MAX);
+       long_subvol_name[BTRFS_PATH_NAME_MAX - 1] = '\0';
+
+       strcpy(vol_args.name, subvol_name);
+
+       ioctl(-1, BTRFS_IOC_SNAP_CREATE, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SNAP_CREATE, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_SNAP_CREATE, &vol_args);
+       printf("ioctl(-1, BTRFS_IOC_SNAP_CREATE, "
+              "{fd=0, name=\"%s\"}) = -1 EBADF (%m)\n", vol_args.name);
+
+       ioctl(-1, BTRFS_IOC_SUBVOL_CREATE, &vol_args);
+       printf("ioctl(-1, BTRFS_IOC_SUBVOL_CREATE, "
+              "{fd=0, name=\"%s\"}) = -1 EBADF (%m)\n", vol_args.name);
+
+       ioctl(-1, BTRFS_IOC_SNAP_DESTROY, &vol_args);
+       printf("ioctl(-1, BTRFS_IOC_SNAP_DESTROY,"
+              " {fd=0, name=\"%s\"}) = -1 EBADF (%m)\n", vol_args.name);
+
+       strncpy(vol_args.name, long_subvol_name, BTRFS_PATH_NAME_MAX);
+       ioctl(-1, BTRFS_IOC_SNAP_CREATE, &vol_args);
+       printf("ioctl(-1, BTRFS_IOC_SNAP_CREATE,"
+              " {fd=0, name=\"%s\"}) = -1 EBADF (%m)\n", vol_args.name);
+
+       ioctl(-1, BTRFS_IOC_SUBVOL_CREATE, &vol_args);
+       printf("ioctl(-1, BTRFS_IOC_SUBVOL_CREATE,"
+              " {fd=0, name=\"%s\"}) = -1 EBADF (%m)\n", vol_args.name);
+
+       ioctl(-1, BTRFS_IOC_SNAP_DESTROY, &vol_args);
+       printf("ioctl(-1, BTRFS_IOC_SNAP_DESTROY,"
+              " {fd=0, name=\"%s\"}) = -1 EBADF (%m)\n", vol_args.name);
+
+       long_subvol_name = realloc(long_subvol_name, BTRFS_SUBVOL_NAME_MAX);
+       if (!long_subvol_name)
+               perror_msg_and_fail("realloc failed");
+
+       ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, NULL) = -1 EBADF (%m)\n");
+
+       strcpy(vol_args_v2.name, subvol_name);
+       printf("ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, ");
+       btrfs_print_vol_args_v2(&vol_args_v2, 1);
+       ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, &vol_args_v2);
+       printf(") = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, ");
+       btrfs_print_vol_args_v2(&vol_args_v2, 1);
+       ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, &vol_args_v2);
+       printf(") = -1 EBADF (%m)\n");
+
+       strncpy(vol_args_v2.name, long_subvol_name, BTRFS_SUBVOL_NAME_MAX);
+       printf("ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, ");
+       btrfs_print_vol_args_v2(&vol_args_v2, 1);
+       ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, &vol_args_v2);
+       printf(") = -1 EBADF (%m)\n");
+
+       vol_args_v2 = vol_args_v2;
+       printf("ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, ");
+       btrfs_print_vol_args_v2(&vol_args_v2, 1);
+       ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, &vol_args_v2);
+       printf(") = -1 EBADF (%m)\n");
+
+       strcpy(vol_args_v2.name, subvol_name);
+       vol_args_v2.qgroup_inherit = (void *)bad_pointer;
+
+       vol_args_v2 = vol_args_v2;
+       printf("ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, ");
+       btrfs_print_vol_args_v2(&vol_args_v2, 0);
+       ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, &vol_args_v2);
+       printf(") = -1 EBADF (%m)\n");
+
+       vol_args_v2 = vol_args_v2;
+       printf("ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, ");
+       btrfs_print_vol_args_v2(&vol_args_v2, 0);
+       ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, &vol_args_v2);
+       printf(") = -1 EBADF (%m)\n");
+
+       vol_args_v2.size = sizeof (*inherit) + 8*sizeof(inherit->qgroups[0]);
+       inherit = alloca(vol_args_v2.size);
+       if (inherit) {
+               int i;
+               inherit->flags = 0x3;
+               inherit->num_ref_copies = 0;
+               inherit->num_excl_copies = 0;
+               inherit->num_qgroups = 8;
+               for (i = 0; i < 8; i++)
+                       inherit->qgroups[i] = 1ULL << i;
+               inherit->lim.flags = 0x7f;
+               inherit->lim.max_rfer = u64val;
+               inherit->lim.max_excl = u64val;
+               inherit->lim.rsv_rfer = u64val;
+               inherit->lim.rsv_excl = u64val;
+               vol_args_v2.qgroup_inherit = inherit;
+
+
+               printf("ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, ");
+               btrfs_print_vol_args_v2(&vol_args_v2, 1);
+               ioctl(-1, BTRFS_IOC_SNAP_CREATE_V2, &vol_args_v2);
+               printf(") = -1 EBADF (%m)\n");
+
+               printf("ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, ");
+               btrfs_print_vol_args_v2(&vol_args_v2, 1);
+               ioctl(-1, BTRFS_IOC_SUBVOL_CREATE_V2, &vol_args_v2);
+               printf(") = -1 EBADF (%m)\n");
+       }
+
+       ioctl(-1, BTRFS_IOC_DEFAULT_SUBVOL, NULL);
+       printf("ioctl(-1, BTRFS_IOC_DEFAULT_SUBVOL, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_DEFAULT_SUBVOL, &u64val);
+       printf("ioctl(-1, BTRFS_IOC_DEFAULT_SUBVOL, [%"
+              PRIu64 "]) = -1 EBADF (%m)\n", u64val);
+
+       printf("ioctl(-1, BTRFS_IOC_SUBVOL_SETFLAGS, ");
+       printflags(btrfs_snap_flags_v2, vol_args_v2.flags,
+                  "BTRFS_SUBVOL_???");
+       ioctl(-1, BTRFS_IOC_SUBVOL_SETFLAGS, &vol_args_v2.flags);
+       printf(") = -1 EBADF (%m)\n");
+
+       if (write_ok) {
+               struct btrfs_ioctl_vol_args_v2 args_passed;
+               /*
+                * Returns transid if flags & BTRFS_SUBVOL_CREATE_ASYNC
+                * - BTRFS_IOC_SNAP_CREATE_V2
+                * - BTRFS_IOC_SUBVOL_CREATE_V2
+                */
+               int subvolfd;
+
+               strncpy(vol_args_v2.name, subvol_name,
+                       sizeof(vol_args_v2.name));
+               vol_args_v2.flags = BTRFS_SUBVOL_CREATE_ASYNC;
+               vol_args_v2.size = 0;
+               vol_args_v2.qgroup_inherit = NULL;
+               args_passed = vol_args_v2;
+               printf("ioctl(%d, BTRFS_IOC_SUBVOL_CREATE_V2, ",
+                       btrfs_test_dir_fd);
+               btrfs_print_vol_args_v2(&vol_args_v2, 1);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_SUBVOL_CREATE_V2,
+                     &args_passed);
+               printf(" => {transid=%" PRI__u64"}) = 0\n",
+                       args_passed.transid);
+
+               subvolfd = openat(btrfs_test_dir_fd, subvol_name,
+                                 O_RDONLY|O_DIRECTORY);
+               if (subvolfd < 0)
+                       perror_msg_and_fail("openat(%s) failed", subvol_name);
+
+               strncpy(vol_args_v2.name, long_subvol_name, BTRFS_NAME_LEN);
+               vol_args_v2.fd = subvolfd;
+               args_passed = vol_args_v2;
+               printf("ioctl(%d, BTRFS_IOC_SNAP_CREATE_V2, ",
+                      btrfs_test_dir_fd);
+               btrfs_print_vol_args_v2(&args_passed, 1);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_SNAP_CREATE_V2,
+                     &args_passed);
+               printf(" => {transid=%" PRI__u64"}) = 0\n",
+                       args_passed.transid);
+
+               /* This only works when mounted w/ -ouser_subvol_rm_allowed */
+               strncpy(vol_args.name, long_subvol_name, 255);
+               vol_args.name[255] = 0;
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_SNAP_DESTROY, &vol_args);
+               printf("ioctl(%d, BTRFS_IOC_SNAP_DESTROY, "
+                      "{fd=%lld, name=\"%.*s\"}) = 0\n",
+                      btrfs_test_dir_fd, vol_args.fd, 255, long_subvol_name);
+
+               strcpy(vol_args.name, subvol_name);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_SNAP_DESTROY, &vol_args);
+               printf("ioctl(%d, BTRFS_IOC_SNAP_DESTROY, "
+                      "{fd=%lld, name=\"%s\"}) = 0\n",
+                      btrfs_test_dir_fd, vol_args.fd, subvol_name);
+
+               close(subvolfd);
+       }
+       free(long_subvol_name);
+}
+
+static void
+btrfs_print_balance_args(struct btrfs_balance_args *args)
+{
+       printf("{profiles=");
+       printflags(btrfs_space_info_flags, args->profiles,
+                  "BTRFS_BLOCK_GROUP_???");
+       printf(", usage=%"PRI__u64 "%s, devid=%"PRI__u64 "%s, pstart=%"PRI__u64
+              "%s, pend=%"PRI__u64 "%s, vstart=%"PRI__u64 "%s, vend=%"PRI__u64
+              "%s, target=%"PRI__u64 "%s, flags=",
+               args->usage, maybe_print_uint64max(args->usage),
+               args->devid, maybe_print_uint64max(args->devid),
+               args->pstart, maybe_print_uint64max(args->pstart),
+               args->pend, maybe_print_uint64max(args->pend),
+               args->vstart, maybe_print_uint64max(args->vstart),
+               args->vend, maybe_print_uint64max(args->vend),
+               args->target, maybe_print_uint64max(args->target));
+       printflags(btrfs_balance_args, args->flags, "BTRFS_BALANCE_ARGS_???");
+       printf("}");
+}
+
+/*
+ * Accepts argument, returns nothing
+ * - BTRFS_IOC_BALANCE
+ * - BTRFS_IOC_BALANCE_CTL
+ *
+ * Accepts argument, returns argument
+ * - BTRFS_IOC_BALANCE_V2
+ */
+static void
+btrfs_test_balance_ioctls(void)
+{
+       struct btrfs_ioctl_balance_args args = {
+               .flags = 0x3f,
+               .data = {
+                       .profiles = 0x7,
+                       .flags = 0x7,
+                       .devid = 1,
+                       .pend = -1ULL,
+                       .vend = -1ULL,
+               },
+
+               .meta = {
+                       .profiles = 0x38,
+                       .flags = 0x38,
+                       .devid = 1,
+               },
+
+               .sys = {
+                       .profiles = 0x1c0 | (1ULL << 48),
+                       .flags = 0x4c0,
+                       .devid = 1,
+               },
+       };
+       struct btrfs_ioctl_vol_args vol_args = {};
+
+       ioctl(-1, BTRFS_IOC_BALANCE_CTL, 1);
+       printf("ioctl(-1, BTRFS_IOC_BALANCE_CTL, "
+              "BTRFS_BALANCE_CTL_PAUSE) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_BALANCE_CTL, 2);
+       printf("ioctl(-1, BTRFS_IOC_BALANCE_CTL, "
+              "BTRFS_BALANCE_CTL_CANCEL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_BALANCE, NULL);
+       printf("ioctl(-1, BTRFS_IOC_BALANCE) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_BALANCE, &vol_args);
+       printf("ioctl(-1, BTRFS_IOC_BALANCE) = -1 EBADF (%m)\n");
+
+       /* struct btrfs_ioctl_balance_args */
+       ioctl(-1, BTRFS_IOC_BALANCE_V2, NULL);
+       printf("ioctl(-1, BTRFS_IOC_BALANCE_V2, NULL) = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_BALANCE_V2, {flags=");
+       printflags(btrfs_balance_flags, args.flags, "BTRFS_BALANCE_???");
+       printf(", data=");
+       btrfs_print_balance_args(&args.data);
+       printf(", meta=");
+       btrfs_print_balance_args(&args.meta);
+       printf(", sys=");
+       btrfs_print_balance_args(&args.sys);
+       ioctl(-1, BTRFS_IOC_BALANCE_V2, &args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       if (write_ok) {
+               args.flags = BTRFS_BALANCE_DATA | BTRFS_BALANCE_METADATA |
+                            BTRFS_BALANCE_SYSTEM;
+               args.data.flags = 0;
+               args.data.profiles = 0;
+               args.meta.flags = 0;
+               args.meta.profiles = 0;
+               args.sys.flags = 0;
+               args.sys.profiles = 0;
+               printf("ioctl(%d, BTRFS_IOC_BALANCE_V2, {flags=",
+                       btrfs_test_dir_fd);
+
+               printflags(btrfs_balance_flags, args.flags,
+                          "BTRFS_BALANCE_???");
+               printf(", data=");
+               btrfs_print_balance_args(&args.data);
+               printf(", meta=");
+               btrfs_print_balance_args(&args.meta);
+               printf(", sys=");
+               btrfs_print_balance_args(&args.sys);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_BALANCE_V2,  &args);
+               printf("} => {flags=");
+               printflags(btrfs_balance_flags, args.flags,
+                          "BTRFS_BALANCE_???");
+               printf(", state=");
+               printflags(btrfs_balance_state, args.state,
+                          "BTRFS_BALANCE_STATE_???");
+               printf(", data=");
+               btrfs_print_balance_args(&args.data);
+               printf(", meta=");
+               btrfs_print_balance_args(&args.meta);
+               printf(", sys=");
+               btrfs_print_balance_args(&args.sys);
+               printf("}) = 0\n");
+       }
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_RESIZE
+ *
+ * Requires /dev/btrfs-control, consumes argument, returns nothing:
+ * - BTRFS_IOC_SCAN_DEV
+ * - BTRFS_IOC_DEVICES_READY
+ *
+ */
+static void
+btrfs_test_device_ioctls(void)
+{
+       const char *devid = "1";
+       const char *devname = "/dev/sda1";
+       struct btrfs_ioctl_vol_args args = {
+               .fd = 2,
+       };
+
+       ioctl(-1, BTRFS_IOC_RESIZE, NULL);
+       printf("ioctl(-1, BTRFS_IOC_RESIZE, NULL) = -1 EBADF (%m)\n");
+
+       strcpy(args.name, devid);
+       ioctl(-1, BTRFS_IOC_RESIZE, &args);
+       printf("ioctl(-1, BTRFS_IOC_RESIZE, "
+              "{fd=%lld, name=\"%s\"}) = -1 EBADF (%m)\n",
+              args.fd, args.name);
+
+       ioctl(-1, BTRFS_IOC_SCAN_DEV, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SCAN_DEV, NULL) = -1 EBADF (%m)\n");
+
+       strcpy(args.name, devname);
+       ioctl(-1, BTRFS_IOC_SCAN_DEV, &args);
+       printf("ioctl(-1, BTRFS_IOC_SCAN_DEV, "
+              "{fd=%lld, name=\"%s\"}) = -1 EBADF (%m)\n",
+              args.fd, args.name);
+
+       ioctl(-1, BTRFS_IOC_ADD_DEV, NULL);
+       printf("ioctl(-1, BTRFS_IOC_ADD_DEV, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_ADD_DEV, &args);
+       printf("ioctl(-1, BTRFS_IOC_ADD_DEV, "
+              "{fd=%lld, name=\"%s\"}) = -1 EBADF (%m)\n",
+              args.fd, args.name);
+
+       ioctl(-1, BTRFS_IOC_RM_DEV, NULL);
+       printf("ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_RM_DEV, &args);
+       printf("ioctl(-1, BTRFS_IOC_RM_DEV, "
+              "{fd=%lld, name=\"%s\"}) = -1 EBADF (%m)\n",
+              args.fd, args.name);
+
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_CLONE
+ * - BTRFS_IOC_CLONE_RANGE
+ */
+static void
+btrfs_test_clone_ioctls(void)
+{
+       int clone_fd = 4;
+       struct btrfs_ioctl_clone_range_args args = {
+               .src_fd = clone_fd,
+               .src_offset = 4096,
+               .src_length = 16384,
+               .dest_offset = 128 * 1024,
+       };
+
+       ioctl(-1, BTRFS_IOC_CLONE, clone_fd);
+       printf("ioctl(-1, BTRFS_IOC_CLONE or FICLONE, %x) = -1 EBADF (%m)\n",
+               clone_fd);
+
+       ioctl(-1, BTRFS_IOC_CLONE_RANGE, NULL);
+       printf("ioctl(-1, BTRFS_IOC_CLONE_RANGE or FICLONERANGE, "
+              "NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_CLONE_RANGE, &args);
+       printf("ioctl(-1, BTRFS_IOC_CLONE_RANGE or FICLONERANGE, "
+              "{src_fd=%lld, src_offset=%llu, src_length=%llu, dest_offset=%llu}) = -1 EBADF (%m)\n",
+               args.src_fd, args.src_offset, args.src_length,
+               args.dest_offset);
+}
+
+#define BTRFS_COMPRESS_TYPES 2
+#define BTRFS_INVALID_COMPRESS (BTRFS_COMPRESS_TYPES + 1)
+
+static void
+btrfs_print_defrag_range_args(struct btrfs_ioctl_defrag_range_args *args)
+{
+       printf("{start=%" PRIu64", len=%" PRIu64 "%s, flags=",
+               args->start, args->len, maybe_print_uint64max(args->len));
+
+       printflags(btrfs_defrag_flags, args->flags, "BTRFS_DEFRAG_RANGE_???");
+       printf(", extent_thresh=%u, compress_type=", args->extent_thresh);
+       printxval(btrfs_compress_types, args->compress_type,
+                 "BTRFS_COMPRESS_???");
+       printf("}");
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_DEFRAG
+ * - BTRFS_DEFRAG_RANGE
+ */
+static void
+btrfs_test_defrag_ioctls(void)
+{
+       struct btrfs_ioctl_vol_args vol_args = {};
+       struct btrfs_ioctl_defrag_range_args args = {
+               .start = 0,
+               .len = -1ULL,
+               .flags = max_flags_plus_one(1),
+               .extent_thresh = 128 * 1024,
+               .compress_type = 2, /* BTRFS_COMPRESS_LZO */
+       };
+
+       /*
+        * These are documented as using vol_args but don't
+        * actually consume it.
+        */
+       ioctl(-1, BTRFS_IOC_DEFRAG, NULL);
+       printf("ioctl(-1, BTRFS_IOC_DEFRAG) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_DEFRAG, &vol_args);
+       printf("ioctl(-1, BTRFS_IOC_DEFRAG) = -1 EBADF (%m)\n");
+
+       /* struct btrfs_ioctl_defrag_range_args */
+       ioctl(-1, BTRFS_IOC_DEFRAG_RANGE, NULL);
+       printf("ioctl(-1, BTRFS_IOC_DEFRAG_RANGE, NULL) = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_DEFRAG_RANGE, ");
+       btrfs_print_defrag_range_args(&args);
+       ioctl(-1, BTRFS_IOC_DEFRAG_RANGE, &args);
+       printf(") = -1 EBADF (%m)\n");
+
+       args.compress_type = BTRFS_INVALID_COMPRESS;
+       printf("ioctl(-1, BTRFS_IOC_DEFRAG_RANGE, ");
+       btrfs_print_defrag_range_args(&args);
+       ioctl(-1, BTRFS_IOC_DEFRAG_RANGE, &args);
+       printf(") = -1 EBADF (%m)\n");
+
+       args.len--;
+       printf("ioctl(-1, BTRFS_IOC_DEFRAG_RANGE, ");
+       btrfs_print_defrag_range_args(&args);
+       ioctl(-1, BTRFS_IOC_DEFRAG_RANGE, &args);
+       printf(") = -1 EBADF (%m)\n");
+}
+
+static const char *
+xlookup(const struct xlat *xlat, const uint64_t val)
+{
+       for (; xlat->str != NULL; xlat++)
+               if (xlat->val == val)
+                       return xlat->str;
+       return NULL;
+}
+
+static void
+btrfs_print_objectid(uint64_t objectid)
+{
+       const char *str = xlookup(btrfs_tree_objectids, objectid);
+       printf("%" PRIu64, objectid);
+       if (str)
+               printf(" /* %s */", str);
+}
+
+static void
+btrfs_print_key_type(uint32_t type)
+{
+       const char *str = xlookup(btrfs_key_types, type);
+       printf("%u", type);
+       if (str)
+               printf(" /* %s */", str);
+}
+
+static void
+btrfs_print_search_key(struct btrfs_ioctl_search_key *key)
+{
+       printf("key={tree_id=");
+       btrfs_print_objectid(key->tree_id);
+       if (verbose || key->min_objectid != 256) {
+               printf(", min_objectid=");
+               btrfs_print_objectid(key->min_objectid);
+       }
+       if (verbose || key->max_objectid != -256ULL) {
+               printf(", max_objectid=");
+               btrfs_print_objectid(key->max_objectid);
+       }
+       if (key->min_offset)
+               printf(", min_offset=%" PRI__u64 "%s",
+                      key->min_offset, maybe_print_uint64max(key->min_offset));
+       if (key->max_offset)
+               printf(", max_offset=%" PRI__u64 "%s",
+                      key->max_offset, maybe_print_uint64max(key->max_offset));
+       if (key->min_transid)
+               printf(", min_transid=%" PRI__u64"%s", key->min_transid,
+                      maybe_print_uint64max(key->min_transid));
+       if (key->max_transid)
+               printf(", max_transid=%" PRI__u64"%s", key->max_transid,
+                      maybe_print_uint64max(key->max_transid));
+       printf(", min_type=");
+       btrfs_print_key_type(key->min_type);
+       printf(", max_type=");
+       btrfs_print_key_type(key->max_type);
+       printf(", nr_items=%u}", key->nr_items);
+}
+
+static void
+btrfs_print_tree_search_buf(struct btrfs_ioctl_search_key *key,
+                           void *buf, uint64_t buf_size)
+{
+       if (verbose) {
+               uint64_t i;
+               uint64_t off = 0;
+               printf("[");
+               for (i = 0; i < key->nr_items; i++) {
+                       struct btrfs_ioctl_search_header *sh;
+                       sh = (typeof(sh))(buf + off);
+                       if (i)
+                               printf(", ");
+                       printf("{transid=%" PRI__u64 ", objectid=",
+                               sh->transid);
+                       btrfs_print_objectid(sh->objectid);
+                       printf(", offset=%" PRI__u64 ", type=", sh->offset);
+                       btrfs_print_key_type(sh->type);
+                       printf(", len=%u}", sh->len);
+                       off += sizeof(*sh) + sh->len;
+               }
+               printf("]");
+       } else
+               printf("...");
+}
+
+/*
+ * Consumes argument, returns argument:
+ * - BTRFS_IOC_TREE_SEARCH
+ * - BTRFS_IOC_TREE_SEARCH_V2
+ */
+static void
+btrfs_test_search_ioctls(void)
+{
+       struct btrfs_ioctl_search_key key_reference = {
+               .tree_id = 5,
+               .min_objectid = 256,
+               .max_objectid = -1ULL,
+               .min_offset = 0,
+               .max_offset = -1ULL,
+               .min_transid = 0,
+               .max_transid = -1ULL,
+               .min_type = 0,
+               .max_type = -1U,
+               .nr_items = 10,
+       };
+       struct btrfs_ioctl_search_args search_args;
+       struct btrfs_ioctl_search_args_v2 search_args_v2 = {
+               .buf_size = 4096,
+       };
+
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH, NULL);
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, NULL);
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, NULL) = -1 EBADF (%m)\n");
+
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH, {");
+       btrfs_print_search_key(&search_args.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH, &search_args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, {");
+       btrfs_print_search_key(&search_args_v2.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, &search_args_v2);
+       printf(", buf_size=%" PRIu64 "}) = -1 EBADF (%m)\n",
+              (uint64_t)search_args_v2.buf_size);
+
+       key_reference.min_objectid = 6;
+       key_reference.max_objectid = 7;
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH, {");
+       btrfs_print_search_key(&search_args.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH, &search_args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, {");
+       btrfs_print_search_key(&search_args_v2.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, &search_args_v2);
+       printf(", buf_size=%" PRIu64 "}) = -1 EBADF (%m)\n",
+              (uint64_t)search_args_v2.buf_size);
+
+       key_reference.min_offset++;
+       key_reference.max_offset--;
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH, {");
+       btrfs_print_search_key(&search_args.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH, &search_args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, {");
+       btrfs_print_search_key(&search_args_v2.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, &search_args_v2);
+       printf(", buf_size=%" PRIu64 "}) = -1 EBADF (%m)\n",
+              (uint64_t)search_args_v2.buf_size);
+
+       key_reference.min_transid++;
+       key_reference.max_transid--;
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH, {");
+       btrfs_print_search_key(&search_args.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH, &search_args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, {");
+       btrfs_print_search_key(&search_args_v2.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, &search_args_v2);
+       printf(", buf_size=%" PRIu64 "}) = -1 EBADF (%m)\n",
+              (uint64_t)search_args_v2.buf_size);
+
+       key_reference.min_type = 1;
+       key_reference.max_type = 12;
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH, {");
+       btrfs_print_search_key(&search_args.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH, &search_args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       search_args_v2.key = key_reference;
+       printf("ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, {");
+       btrfs_print_search_key(&search_args_v2.key);
+       ioctl(-1, BTRFS_IOC_TREE_SEARCH_V2, &search_args_v2);
+       printf(", buf_size=%" PRIu64 "}) = -1 EBADF (%m)\n",
+              (uint64_t)search_args_v2.buf_size);
+
+       if (btrfs_test_root) {
+               struct btrfs_ioctl_search_args_v2 *args;
+               int bufsize = 4096;
+
+               key_reference.tree_id = 5;
+               key_reference.min_type = 1;
+               key_reference.max_type = 1;
+               key_reference.min_objectid = 256;
+               key_reference.max_objectid = 357;
+               key_reference.min_offset = 0;
+               key_reference.max_offset = -1ULL;
+
+               search_args.key = key_reference;
+               printf("ioctl(%d, BTRFS_IOC_TREE_SEARCH, {",
+                       btrfs_test_dir_fd);
+               btrfs_print_search_key(&search_args.key);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_TREE_SEARCH, &search_args);
+               printf("} => {key={nr_items=%u}, buf=...}) = 0\n",
+                       search_args.key.nr_items);
+
+               args = malloc(sizeof(*args) + bufsize);
+               if (!args)
+                       perror_msg_and_fail("malloc failed");
+
+               args->key = key_reference;
+               args->buf_size = bufsize;
+               printf("ioctl(%d, BTRFS_IOC_TREE_SEARCH_V2, {",
+                       btrfs_test_dir_fd);
+               btrfs_print_search_key(&key_reference);
+               printf(", buf_size=%" PRIu64 "}", (uint64_t) args->buf_size);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_TREE_SEARCH_V2, args);
+               printf(" => {key={nr_items=%u}, buf_size=%" PRIu64 ", buf=",
+                       args->key.nr_items, (uint64_t)args->buf_size);
+               btrfs_print_tree_search_buf(&args->key, args->buf,
+                                           args->buf_size);
+               printf("}) = 0\n");
+
+               args->key = key_reference;
+               args->buf_size = sizeof(struct btrfs_ioctl_search_header);
+               printf("ioctl(%d, BTRFS_IOC_TREE_SEARCH_V2, {",
+                       btrfs_test_dir_fd);
+               btrfs_print_search_key(&args->key);
+               printf(", buf_size=%" PRIu64 "}", (uint64_t)args->buf_size);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_TREE_SEARCH_V2, args);
+               printf("=> {buf_size=%" PRIu64 "}) = -1 EOVERFLOW (%m)\n",
+                       (uint64_t)args->buf_size);
+               free(args);
+       }
+}
+
+/*
+ * Consumes argument, returns argument:
+ * - BTRFS_IOC_INO_LOOKUP
+ */
+static void
+btrfs_test_ino_lookup_ioctl(void)
+{
+       struct btrfs_ioctl_ino_lookup_args args = {
+               .treeid = 5,
+               .objectid = 256,
+       };
+
+       ioctl(-1, BTRFS_IOC_INO_LOOKUP, NULL);
+       printf("ioctl(-1, BTRFS_IOC_INO_LOOKUP, NULL) = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_INO_LOOKUP, {treeid=");
+       btrfs_print_objectid(args.treeid);
+       printf(", objectid=");
+       btrfs_print_objectid(args.objectid);
+       ioctl(-1, BTRFS_IOC_INO_LOOKUP, &args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       if (btrfs_test_root) {
+               printf("ioctl(%d, BTRFS_IOC_INO_LOOKUP, {treeid=",
+                      btrfs_test_dir_fd);
+               btrfs_print_objectid(args.treeid);
+               printf(", objectid=");
+               btrfs_print_objectid(args.objectid);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_INO_LOOKUP, &args);
+               printf("} => {name=\"%s\"}) = 0\n", args.name);
+       }
+}
+
+/*
+ * Consumes argument, returns argument:
+ * - BTRFS_IOC_SPACE_INFO
+ */
+static void
+btrfs_test_space_info_ioctl(void)
+{
+       struct btrfs_ioctl_space_args args = {};
+
+       ioctl(-1, BTRFS_IOC_SPACE_INFO, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SPACE_INFO, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_SPACE_INFO, &args);
+       printf("ioctl(-1, BTRFS_IOC_SPACE_INFO, "
+              "{space_slots=%" PRI__u64 "}) = -1 EBADF (%m)\n",
+               args.space_slots);
+
+       if (btrfs_test_root) {
+               struct btrfs_ioctl_space_args args_passed;
+               struct btrfs_ioctl_space_args *argsp;
+               args_passed = args;
+               printf("ioctl(%d, BTRFS_IOC_SPACE_INFO, "
+                      "{space_slots=%" PRI__u64 "}",
+                      btrfs_test_dir_fd, args_passed.space_slots);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_SPACE_INFO, &args_passed);
+               printf(" => {total_spaces=%" PRI__u64 "}) = 0\n",
+                       args_passed.total_spaces);
+
+               argsp = malloc(sizeof(args) +
+                       args_passed.total_spaces * sizeof(args.spaces[0]));
+               if (!argsp)
+                       perror_msg_and_fail("malloc failed");
+
+               *argsp = args;
+               argsp->space_slots = args_passed.total_spaces;
+               printf("ioctl(%d, BTRFS_IOC_SPACE_INFO, "
+                      "{space_slots=%" PRI__u64 "}",
+                      btrfs_test_dir_fd, argsp->space_slots);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_SPACE_INFO, argsp);
+               printf(" => {total_spaces=%" PRI__u64 ", spaces=",
+                       argsp->total_spaces);
+               if (verbose) {
+                       unsigned int i;
+                       printf("[");
+                       for (i = 0; i < argsp->total_spaces; i++) {
+                               struct btrfs_ioctl_space_info *info;
+                               info = &argsp->spaces[i];
+                               if (i)
+                                       printf(", ");
+                               printf("{flags=");
+                               printflags(btrfs_space_info_flags, info->flags,
+                                          "BTRFS_SPACE_INFO_???");
+                               printf(", total_bytes=%" PRI__u64
+                                      ", used_bytes=%" PRI__u64 "}",
+                                      info->total_bytes, info->used_bytes);
+                       }
+
+                       printf("]");
+               } else
+                       printf("...");
+               printf("}) = 0\n");
+               free(argsp);
+       }
+}
+
+/*
+ * Consumes no arguments, returns nothing:
+ * - BTRFS_IOC_SCRUB_CANCEL
+ * Consumes argument, returns argument:
+ - * BTRFS_IOC_SCRUB
+ - * BTRFS_IOC_SCRUB_PROGRESS
+ */
+static void
+btrfs_test_scrub_ioctls(void)
+{
+       struct btrfs_ioctl_scrub_args args = {
+               .devid = 1,
+               .start = 0,
+               .end = -1ULL,
+               .flags = max_flags_plus_one(0),
+       };
+
+       ioctl(-1, BTRFS_IOC_SCRUB, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SCRUB, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_SCRUB_CANCEL, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SCRUB_CANCEL) = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_SCRUB, {devid=%" PRI__u64 ", start=%"
+               PRI__u64 "%s, end=%" PRI__u64"%s, flags=",
+               args.devid, args.start, maybe_print_uint64max(args.start),
+               args.end, maybe_print_uint64max(args.end));
+       printflags(btrfs_scrub_flags, args.flags, "BTRFS_SCRUB_???");
+       ioctl(-1, BTRFS_IOC_SCRUB, &args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_SCRUB_PROGRESS, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SCRUB_PROGRESS, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_SCRUB_PROGRESS, &args);
+       printf("ioctl(-1, BTRFS_IOC_SCRUB_PROGRESS, "
+              "{devid=%" PRI__u64 "}) = -1 EBADF (%m)\n", args.devid);
+}
+
+/*
+ * Consumes argument, returns argument:
+ * - BTRFS_IOC_DEV_INFO
+ */
+static void
+btrfs_test_dev_info_ioctl(void)
+{
+       struct btrfs_ioctl_dev_info_args args = {
+               .devid = 1,
+       };
+       memcpy(&args.uuid, uuid_reference, BTRFS_UUID_SIZE);
+
+       ioctl(-1, BTRFS_IOC_DEV_INFO, NULL);
+       printf("ioctl(-1, BTRFS_IOC_DEV_INFO, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_DEV_INFO, &args);
+       printf("ioctl(-1, BTRFS_IOC_DEV_INFO, "
+              "{devid=%" PRI__u64", uuid=%s}) = -1 EBADF (%m)\n",
+               args.devid, uuid_reference_string);
+}
+
+/*
+ * Consumes argument, returns argument:
+ * - BTRFS_IOC_INO_PATHS
+ * - BTRFS_IOC_LOGICAL_INO
+ */
+static void
+btrfs_test_ino_path_ioctls(void)
+{
+       char buf[16384];
+       struct btrfs_ioctl_ino_path_args args = {
+               .inum = 256,
+               .size = sizeof(buf),
+               .fspath = (unsigned long)buf,
+       };
+
+       ioctl(-1, BTRFS_IOC_INO_PATHS, NULL);
+       printf("ioctl(-1, BTRFS_IOC_INO_PATHS, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_LOGICAL_INO, NULL);
+       printf("ioctl(-1, BTRFS_IOC_LOGICAL_INO, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_INO_PATHS, &args);
+       printf("ioctl(-1, BTRFS_IOC_INO_PATHS, "
+              "{inum=%" PRI__u64", size=%" PRI__u64
+              ", fspath=0x%" PRI__x64 "}) = -1 EBADF (%m)\n",
+              args.inum, args.size, args.fspath);
+
+       ioctl(-1, BTRFS_IOC_LOGICAL_INO, &args);
+       printf("ioctl(-1, BTRFS_IOC_LOGICAL_INO, {logical=%" PRI__u64
+              ", size=%" PRI__u64", inodes=0x%" PRI__x64
+              "}) = -1 EBADF (%m)\n", args.inum, args.size, args.fspath);
+
+       if (btrfs_test_root) {
+               int size;
+               struct stat si;
+               int ret;
+               struct btrfs_data_container *data = (void *)buf;
+               struct fiemap *fiemap;
+               int fd;
+
+               ret = fstat(btrfs_test_dir_fd, &si);
+               if (ret)
+                       perror_msg_and_fail("fstat failed");
+
+               args.inum = si.st_ino;
+               printf("ioctl(%d, BTRFS_IOC_INO_PATHS, "
+                      "{inum=%" PRI__u64", size=%" PRI__u64
+                      ", fspath=0x%" PRI__x64"}",
+                      btrfs_test_dir_fd, args.inum, args.size,
+                      args.fspath);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_INO_PATHS, &args);
+               printf(" => {fspath={bytes_left=%u, bytes_missing=%u, elem_cnt=%u, elem_missed=%u, val=",
+                       data->bytes_left, data->bytes_missing, data->elem_cnt,
+                       data->elem_missed);
+               if (verbose) {
+                       printf("[\"strace-test\"]");
+               } else
+                       printf("...");
+               printf("}}) = 0\n");
+
+               fd = openat(btrfs_test_dir_fd, "file1", O_RDWR|O_CREAT, 0600);
+               if (fd < 0)
+                       perror_msg_and_fail("openat(file1) failed");
+
+               ret = fstat(fd, &si);
+               if (ret)
+                       perror_msg_and_fail("fstat failed");
+
+               if (write(fd, buf, sizeof(buf)) < 0)
+                       perror_msg_and_fail("write: fd");
+
+               /*
+                * Force delalloc so we can actually
+                * search for the extent.
+                */
+               fsync(fd);
+               ioctl(fd, BTRFS_IOC_SYNC, NULL);
+               printf("ioctl(%d, BTRFS_IOC_SYNC) = 0\n", fd);
+
+               size = sizeof(*fiemap) + 2 * sizeof(fiemap->fm_extents[0]);
+               fiemap = malloc(size);
+               if (!fiemap)
+                       perror_msg_and_fail("malloc failed");
+               memset(fiemap, 0, size);
+
+               fiemap->fm_length = sizeof(buf);
+               fiemap->fm_extent_count = 2;
+
+               /* This is also a live test for FIEMAP */
+               printf("ioctl(%d, FS_IOC_FIEMAP, {fm_start=%" PRI__u64
+                      ", fm_length=%" PRI__u64", fm_flags=",
+                      fd, fiemap->fm_start, fiemap->fm_length);
+               printflags(fiemap_flags, fiemap->fm_flags, "FIEMAP_FLAG_???");
+               printf(", fm_extent_count=%u}", fiemap->fm_extent_count);
+               ioctl(fd, FS_IOC_FIEMAP, fiemap);
+               printf(" => {fm_flags=");
+               printflags(fiemap_flags, fiemap->fm_flags, "FIEMAP_FLAG_???");
+               printf(", fm_mapped_extents=%u, fm_extents=",
+                       fiemap->fm_mapped_extents);
+               if (verbose) {
+                       printf("[");
+                       unsigned int i;
+                       for (i = 0; i < fiemap->fm_mapped_extents; i++) {
+                               struct fiemap_extent *fe;
+                               fe = &fiemap->fm_extents[i];
+                               if (i)
+                                       printf(", ");
+                               printf("{fe_logical=%" PRI__u64
+                                      ", fe_physical=%" PRI__u64
+                                      ", fe_length=%" PRI__u64
+                                      ", ",
+                                      fe->fe_logical, fe->fe_physical,
+                                      fe->fe_length);
+                               printflags(fiemap_extent_flags, fe->fe_flags,
+                                          "FIEMAP_EXTENT_???");
+                               printf("}");
+                       }
+                       printf("]");
+               } else
+                       printf("...");
+               printf("}) = 0\n");
+
+               args.inum = fiemap->fm_extents[0].fe_physical;
+               printf("ioctl(%d, BTRFS_IOC_LOGICAL_INO, {logical=%" PRI__u64
+                      ", size=%" PRI__u64", inodes=0x%" PRI__x64"}",
+                      fd, args.inum, args.size, args.fspath);
+               ioctl(fd, BTRFS_IOC_LOGICAL_INO, &args);
+               printf(" => {inodes={bytes_left=%u, bytes_missing=%u, elem_cnt=%u, elem_missed=%u, val=",
+                       data->bytes_left, data->bytes_missing, data->elem_cnt,
+                       data->elem_missed);
+               if (verbose) {
+                       printf("[{inum=%lu, offset=0, root=5}]",
+                               si.st_ino);
+               } else
+                       printf("...");
+               printf("}}) = 0\n");
+               close(fd);
+               free(fiemap);
+       }
+}
+
+/*
+ * Consumes argument, returns argument:
+ * - BTRFS_IOC_SET_RECEIVED_SUBVOL
+ */
+static void
+btrfs_test_set_received_subvol_ioctl(void)
+{
+       struct btrfs_ioctl_received_subvol_args args = {
+               .stransid = 0x12345,
+               .stime = {
+                       .sec = 1463193386,
+                       .nsec = 12345,
+               },
+       };
+       memcpy(&args.uuid, uuid_reference, BTRFS_UUID_SIZE);
+
+       ioctl(-1, BTRFS_IOC_SET_RECEIVED_SUBVOL, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SET_RECEIVED_SUBVOL, "
+              "NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_SET_RECEIVED_SUBVOL, &args);
+       printf("ioctl(-1, BTRFS_IOC_SET_RECEIVED_SUBVOL, "
+              "{uuid=%s, stransid=%" PRI__u64", stime=%" PRI__u64
+              ".%u, flags=0}) = -1 EBADF (%m)\n",
+              uuid_reference_string, args.stransid, args.stime.sec,
+              args.stime.nsec);
+}
+
+/*
+ * Consumes argument, returns nothing (output is via send_fd)
+ * - BTRFS_IOC_SEND
+ */
+static void
+btrfs_test_send_ioctl(void)
+{
+       uint64_t u64_array[2] = { 256, 257 };
+       struct btrfs_ioctl_send_args args = {
+               .send_fd = 4,
+               .parent_root = 257,
+               .flags = max_flags_plus_one(2),
+       };
+
+       ioctl(-1, BTRFS_IOC_SEND, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SEND, NULL) = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_SEND, "
+              "{send_fd=%lld, clone_sources_count=%" PRI__u64
+              ", clone_sources=", args.send_fd, args.clone_sources_count);
+       if (verbose)
+               printf("NULL");
+       else
+               printf("...");
+       printf(", parent_root=");
+       btrfs_print_objectid(args.parent_root);
+       printf(", flags=");
+       printflags(btrfs_send_flags, args.flags, "BTRFS_SEND_FLAGS_???");
+       ioctl(-1, BTRFS_IOC_SEND, &args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       args.clone_sources_count = 2;
+       args.clone_sources = (__u64 *)u64_array;
+
+       printf("ioctl(-1, BTRFS_IOC_SEND, "
+              "{send_fd=%lld, clone_sources_count=%" PRI__u64
+              ", clone_sources=", args.send_fd, args.clone_sources_count);
+       if (verbose) {
+               printf("[");
+               btrfs_print_objectid(u64_array[0]);
+               printf(", ");
+               btrfs_print_objectid(u64_array[1]);
+               printf("]");
+       } else
+               printf("...");
+       printf(", parent_root=");
+       btrfs_print_objectid(args.parent_root);
+       printf(", flags=");
+       printflags(btrfs_send_flags, args.flags, "BTRFS_SEND_FLAGS_???");
+       ioctl(-1, BTRFS_IOC_SEND, &args);
+       printf("}) = -1 EBADF (%m)\n");
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_QUOTA_CTL
+ */
+static void
+btrfs_test_quota_ctl_ioctl(void)
+{
+       struct btrfs_ioctl_quota_ctl_args args = {
+               .cmd = 1,
+       };
+
+       ioctl(-1, BTRFS_IOC_QUOTA_CTL, NULL);
+       printf("ioctl(-1, BTRFS_IOC_QUOTA_CTL, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_QUOTA_CTL, &args);
+       printf("ioctl(-1, BTRFS_IOC_QUOTA_CTL, "
+              "BTRFS_QUOTA_CTL_ENABLE}) = -1 EBADF (%m)\n");
+
+       args.cmd = 2;
+       ioctl(-1, BTRFS_IOC_QUOTA_CTL, &args);
+       printf("ioctl(-1, BTRFS_IOC_QUOTA_CTL, "
+              "BTRFS_QUOTA_CTL_DISABLE}) = -1 EBADF (%m)\n");
+
+       args.cmd = 3;
+       ioctl(-1, BTRFS_IOC_QUOTA_CTL, &args);
+       printf("ioctl(-1, BTRFS_IOC_QUOTA_CTL, "
+              "BTRFS_QUOTA_CTL_RESCAN__NOTUSED}) = -1 EBADF (%m)\n");
+
+       args.cmd = 4;
+       ioctl(-1, BTRFS_IOC_QUOTA_CTL, &args);
+       printf("ioctl(-1, BTRFS_IOC_QUOTA_CTL, "
+              "0x4 /* BTRFS_QUOTA_CTL_??? */}) = -1 EBADF (%m)\n");
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_QGROUP_ASSIGN
+ */
+static void
+btrfs_test_qgroup_assign_ioctl(void)
+{
+       struct btrfs_ioctl_qgroup_assign_args args = {
+               .assign = 1,
+               .src = 257,
+               .dst = 258,
+       };
+
+       ioctl(-1, BTRFS_IOC_QGROUP_ASSIGN, NULL);
+       printf("ioctl(-1, BTRFS_IOC_QGROUP_ASSIGN, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_QGROUP_ASSIGN, &args);
+       printf("ioctl(-1, BTRFS_IOC_QGROUP_ASSIGN, "
+              "{assign=%" PRI__u64", src=%" PRI__u64", dst=%" PRI__u64
+              "}) = -1 EBADF (%m)\n", args.assign, args.src, args.dst);
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_QGROUP_CREATE
+  */
+static void
+btrfs_test_qgroup_create_ioctl(void)
+{
+       struct btrfs_ioctl_qgroup_create_args args = {
+               .create = 1,
+               .qgroupid = 257,
+       };
+
+       ioctl(-1, BTRFS_IOC_QGROUP_CREATE, NULL);
+       printf("ioctl(-1, BTRFS_IOC_QGROUP_CREATE, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_QGROUP_CREATE, &args);
+       printf("ioctl(-1, BTRFS_IOC_QGROUP_CREATE, "
+              "{create=%" PRI__u64", qgroupid=%" PRI__u64
+              "}) = -1 EBADF (%m)\n", args.create, args.qgroupid);
+}
+
+/*
+ * Consumes nothing, returns nothing:
+ * - BTRFS_IOC_QUOTA_RESCAN_WAIT
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_QUOTA_RESCAN
+ */
+static void
+btrfs_test_quota_rescan_ioctl(void)
+{
+       struct btrfs_ioctl_quota_rescan_args args = {
+               .progress = 1,
+       };
+
+       ioctl(-1, BTRFS_IOC_QUOTA_RESCAN, NULL);
+       printf("ioctl(-1, BTRFS_IOC_QUOTA_RESCAN, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_QUOTA_RESCAN, &args);
+       printf("ioctl(-1, BTRFS_IOC_QUOTA_RESCAN, "
+              "{flags=0}) = -1 EBADF (%m)\n");
+       ioctl(-1, BTRFS_IOC_QUOTA_RESCAN_WAIT, NULL);
+       printf("ioctl(-1, BTRFS_IOC_QUOTA_RESCAN_WAIT) = -1 EBADF (%m)\n");
+
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_SET_FSLABEL
+ *
+ * Consumes no argument, returns argument:
+ * - BTRFS_IOC_GET_FS_LABEL
+ */
+static void
+btrfs_test_label_ioctls(void)
+{
+       char label[BTRFS_LABEL_SIZE] = "btrfs-label";
+
+       ioctl(-1, BTRFS_IOC_SET_FSLABEL, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SET_FSLABEL, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_SET_FSLABEL, label);
+       printf("ioctl(-1, BTRFS_IOC_SET_FSLABEL, \"%s\") = -1 EBADF (%m)\n",
+               label);
+
+       if (write_ok) {
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_SET_FSLABEL, label);
+               printf("ioctl(%d, BTRFS_IOC_SET_FSLABEL, \"%s\") = 0\n",
+                       btrfs_test_dir_fd, label);
+
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_GET_FSLABEL, label);
+               printf("ioctl(%d, BTRFS_IOC_GET_FSLABEL, \"%s\") = 0\n",
+                       btrfs_test_dir_fd, label);
+       }
+}
+
+/*
+ * Consumes argument, returns argument:
+ * - BTRFS_IOC_GET_DEV_STATS
+ */
+static void
+btrfs_test_get_dev_stats_ioctl(void)
+{
+       struct btrfs_ioctl_get_dev_stats args = {
+               .devid = 1,
+               .nr_items = 5,
+               .flags = max_flags_plus_one(0),
+       };
+
+       ioctl(-1, BTRFS_IOC_GET_DEV_STATS, NULL);
+       printf("ioctl(-1, BTRFS_IOC_GET_DEV_STATS, NULL) = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_GET_DEV_STATS, {devid=%" PRI__u64
+               ", nr_items=%" PRI__u64", flags=",
+               args.devid, args.nr_items);
+       printflags(btrfs_dev_stats_flags, args.flags,
+                    "BTRFS_DEV_STATS_???");
+       ioctl(-1, BTRFS_IOC_GET_DEV_STATS, &args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       if (write_ok) {
+               unsigned int i;
+               args.flags = BTRFS_DEV_STATS_RESET;
+               printf("ioctl(%d, BTRFS_IOC_GET_DEV_STATS, {devid=%" PRI__u64
+                       ", nr_items=%" PRI__u64", flags=",
+                       btrfs_test_dir_fd, args.devid, args.nr_items);
+               printflags(btrfs_dev_stats_flags, args.flags,
+                            "BTRFS_DEV_STATS_???");
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_GET_DEV_STATS, &args);
+               printf("} => {nr_items=%" PRI__u64 ", flags=",
+                       args.nr_items);
+               printflags(btrfs_dev_stats_flags, args.flags,
+                          "BTRFS_DEV_STATS_???");
+               printf(", [");
+               for (i = 0; i < args.nr_items; i++) {
+                       const char *name = xlookup(btrfs_dev_stats_values, i);
+                       if (i)
+                               printf(", ");
+                       if (name)
+                               printf("/* %s */ ", name);
+                       printf("%" PRI__u64, args.values[i]);
+               }
+               printf("]}) = 0\n");
+       }
+}
+
+/*
+ * Consumes argument, returns argument:
+ * - BTRFS_IOC_DEV_REPLACE
+ *
+ * Test environment for this is more difficult; It's better to do it by hand.
+ */
+static void
+btrfs_test_dev_replace_ioctl(void)
+{
+       struct btrfs_ioctl_dev_replace_args args = {
+               .cmd = BTRFS_IOCTL_DEV_REPLACE_CMD_START,
+               .start = {
+                       .srcdevid = 1,
+               },
+       };
+       strcpy((char *)args.start.srcdev_name, "/dev/sda1");
+       strcpy((char *)args.start.tgtdev_name, "/dev/sdb1");
+
+       /* struct btrfs_ioctl_dev_replace_args */
+       ioctl(-1, BTRFS_IOC_DEV_REPLACE, NULL);
+       printf("ioctl(-1, BTRFS_IOC_DEV_REPLACE, NULL) = -1 EBADF (%m)\n");
+
+       ioctl(-1, BTRFS_IOC_DEV_REPLACE, &args);
+       printf("ioctl(-1, BTRFS_IOC_DEV_REPLACE, "
+              "{cmd=BTRFS_IOCTL_DEV_REPLACE_CMD_START, start={srcdevid=%"
+              PRI__u64", cont_reading_from_srcdev_mode=%" PRI__u64
+              ", srcdev_name=\"%s\", tgtdev_name=\"%s\"}}) = -1 EBADF (%m)\n",
+              args.start.srcdevid,
+              args.start.cont_reading_from_srcdev_mode,
+              (char *)args.start.srcdev_name,
+              (char *)args.start.tgtdev_name);
+
+       args.cmd = 1;
+       ioctl(-1, BTRFS_IOC_DEV_REPLACE, &args);
+       printf("ioctl(-1, BTRFS_IOC_DEV_REPLACE, "
+              "{cmd=BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS}) = -1 EBADF (%m)\n");
+}
+
+static void
+btrfs_test_extent_same_ioctl(void)
+{
+       struct file_dedupe_range args = {
+               .src_offset = 1024,
+               .src_length = 10240,
+       };
+       struct file_dedupe_range *argsp;
+
+       ioctl(-1, BTRFS_IOC_FILE_EXTENT_SAME, NULL);
+       printf("ioctl(-1, BTRFS_IOC_FILE_EXTENT_SAME or FIDEDUPERANGE, "
+              "NULL) = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_FILE_EXTENT_SAME or FIDEDUPERANGE, "
+              "{src_offset=%" PRIu64
+              ", src_length=%" PRIu64
+              ", dest_count=%hu, info=",
+               (uint64_t)args.src_offset,
+               (uint64_t)args.src_length, args.dest_count);
+       if (verbose)
+               printf("[]");
+       else
+               printf("...");
+       ioctl(-1, BTRFS_IOC_FILE_EXTENT_SAME, &args);
+       printf("}) = -1 EBADF (%m)\n");
+
+       argsp = malloc(sizeof(*argsp) + sizeof(argsp->info[0]) * 2);
+       if (!argsp)
+               perror_msg_and_fail("malloc failed");
+       memset(argsp, 0, sizeof(*argsp) + sizeof(argsp->info[0]) * 2);
+
+       *argsp = args;
+       argsp->dest_count = 2;
+       argsp->info[0].dest_fd = 2;
+       argsp->info[0].dest_offset = 0;
+       argsp->info[1].dest_fd = 2;
+       argsp->info[1].dest_offset = 10240;
+
+       printf("ioctl(-1, BTRFS_IOC_FILE_EXTENT_SAME or FIDEDUPERANGE, "
+              "{src_offset=%" PRIu64
+              ", src_length=%" PRIu64
+              ", dest_count=%hu, info=",
+               (int64_t)argsp->src_offset,
+               (uint64_t)argsp->src_length, argsp->dest_count);
+       if (verbose)
+               printf("[{dest_fd=%" PRId64 ", dest_offset=%" PRIu64
+                      "}, {dest_fd=%" PRId64 ", dest_offset=%"PRIu64
+                      "}]",
+                      (int64_t)argsp->info[0].dest_fd,
+                      (uint64_t)argsp->info[0].dest_offset,
+                      (int64_t)argsp->info[1].dest_fd,
+                      (uint64_t)argsp->info[1].dest_offset);
+       else
+               printf("...");
+       ioctl(-1, BTRFS_IOC_FILE_EXTENT_SAME, argsp);
+       printf("}) = -1 EBADF (%m)\n");
+
+       if (write_ok) {
+               int fd1, fd2;
+               char buf[16384];
+               int size = sizeof(*argsp) + sizeof(argsp->info[0]);
+
+               memset(buf, 0, sizeof(buf));
+
+               fd1 = openat(btrfs_test_dir_fd, "file1", O_RDWR|O_CREAT, 0600);
+               if (fd1 < 0)
+                       perror_msg_and_fail("open file1 failed");
+
+               fd2 = openat(btrfs_test_dir_fd, "file2", O_RDWR|O_CREAT, 0600);
+               if (fd2 < 0)
+                       perror_msg_and_fail("open file2 failed");
+
+               if (write(fd1, buf, sizeof(buf)) < 0)
+                       perror_msg_and_fail("write: fd1");
+               if (write(fd2, buf, sizeof(buf)) < 0)
+                       perror_msg_and_fail("write: fd2");
+
+               close(fd2);
+               fd2 = openat(btrfs_test_dir_fd, "file2", O_RDONLY);
+               if (fd2 < 0)
+                       perror_msg_and_fail("open file2 failed");
+
+               argsp = realloc(argsp, size);
+               if (!argsp)
+                       perror_msg_and_fail("realloc failed");
+               memset(argsp, 0, size);
+
+               argsp->src_offset = 0;
+               argsp->src_length = sizeof(buf);
+               argsp->dest_count = 1;
+               argsp->info[0].dest_fd = fd2;
+               argsp->info[0].dest_offset = 0;
+
+               printf("ioctl(%d, BTRFS_IOC_FILE_EXTENT_SAME or FIDEDUPERANGE, "
+                      "{src_offset=%" PRIu64 ", src_length=%" PRIu64
+                      ", dest_count=%hu, info=", fd1,
+                      (uint64_t)argsp->src_offset,
+                      (uint64_t)argsp->src_length, argsp->dest_count);
+               if (verbose)
+                       printf("[{dest_fd=%d, dest_offset=0}]", fd2);
+               else
+                       printf("...");
+               ioctl(fd1, BTRFS_IOC_FILE_EXTENT_SAME, argsp);
+               printf("} => {info=");
+               if (verbose)
+                       printf("[{bytes_deduped=%u, status=0}]",
+                               (unsigned) sizeof(buf));
+               else
+                       printf("...");
+               printf("}) = 0\n");
+               close(fd1);
+               close(fd2);
+               unlinkat(btrfs_test_dir_fd, "file1", 0);
+               unlinkat(btrfs_test_dir_fd, "file2", 0);
+               close(fd1);
+               close(fd2);
+       }
+       free(argsp);
+}
+
+static void
+btrfs_print_features(struct btrfs_ioctl_feature_flags *flags)
+{
+       printf("{compat_flags=");
+       printflags(btrfs_features_compat, flags->compat_flags,
+                  "BTRFS_FEATURE_COMPAT_???");
+
+       printf(", compat_ro_flags=");
+       printflags(btrfs_features_compat_ro, flags->compat_ro_flags,
+                  "BTRFS_FEATURE_COMPAT_RO_???");
+
+       printf(", incompat_flags=");
+       printflags(btrfs_features_incompat, flags->incompat_flags,
+                  "BTRFS_FEATURE_INCOMPAT_???");
+       printf("}");
+}
+
+/*
+ * Consumes argument, returns nothing:
+ * - BTRFS_IOC_SET_FEATURES
+ *
+ * Consumes nothing, returns argument:
+ * - BTRFS_IOC_GET_FEATURES
+ * - BTRFS_IOC_GET_SUPPORTED_FEATURES
+ */
+static void
+btrfs_test_features_ioctls(void)
+{
+       struct btrfs_ioctl_feature_flags args[2] = {
+               {
+                       .compat_flags = max_flags_plus_one(-1),
+                       .incompat_flags = max_flags_plus_one(9),
+                       .compat_ro_flags = max_flags_plus_one(0),
+               }, {
+                       .compat_flags = max_flags_plus_one(-1),
+                       .incompat_flags = max_flags_plus_one(9),
+                       .compat_ro_flags = max_flags_plus_one(0),
+               },
+       };
+       struct btrfs_ioctl_feature_flags supported_features[3];
+
+       ioctl(-1, BTRFS_IOC_SET_FEATURES, NULL);
+       printf("ioctl(-1, BTRFS_IOC_SET_FEATURES, NULL) = -1 EBADF (%m)\n");
+
+       printf("ioctl(-1, BTRFS_IOC_SET_FEATURES, [");
+       btrfs_print_features(&args[0]);
+       printf(", ");
+       btrfs_print_features(&args[1]);
+       ioctl(-1, BTRFS_IOC_SET_FEATURES, &args);
+       printf("]) = -1 EBADF (%m)\n");
+
+       if (btrfs_test_root) {
+               printf("ioctl(%d, BTRFS_IOC_GET_FEATURES, ",
+                      btrfs_test_dir_fd);
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_GET_FEATURES,
+                     &supported_features);
+               btrfs_print_features(&supported_features[0]);
+               printf(") = 0\n");
+
+               ioctl(btrfs_test_dir_fd, BTRFS_IOC_GET_SUPPORTED_FEATURES,
+                     &supported_features);
+               printf("ioctl(%d, BTRFS_IOC_GET_SUPPORTED_FEATURES, ",
+                      btrfs_test_dir_fd);
+               printf("[ /* supported */ ");
+               btrfs_print_features(&supported_features[0]);
+               printf(", /* safe to set */ ");
+               btrfs_print_features(&supported_features[1]);
+               printf(", /* safe to clear */ ");
+               btrfs_print_features(&supported_features[2]);
+               printf("]) = 0\n");
+       }
+}
+
+int
+main(int argc, char *argv[])
+{
+
+       int opt;
+       int ret;
+       const char *path;
+
+       while ((opt = getopt(argc, argv, "wv")) != -1) {
+               switch (opt) {
+               case 'v':
+                       /*
+                        * These tests are incomplete, especially when
+                        * printing arrays of objects are involved.
+                        */
+                       verbose = true;
+                       break;
+               case 'w':
+                       write_ok = true;
+                       break;
+               default:
+                       error_msg_and_fail("usage: btrfs [-v] [-w] [path]");
+               }
+       }
+
+       /*
+        * This will enable optional tests that require a valid file descriptor
+        */
+       if (optind < argc) {
+               int rootfd;
+               struct statfs sfi;
+               path = argv[optind];
+
+               ret = statfs(path, &sfi);
+               if (ret)
+                       perror_msg_and_fail("statfs(%s) failed", path);
+
+               if ((unsigned) sfi.f_type != BTRFS_SUPER_MAGIC)
+                       perror_msg_and_fail("%s is not a btrfs file system",
+                                           path);
+
+               btrfs_test_root = path;
+               rootfd = open(path, O_RDONLY|O_DIRECTORY);
+               if (rootfd < 0)
+                       perror_msg_and_fail("open(%s) failed", path);
+
+               ret = mkdirat(rootfd, "strace-test", 0755);
+               if (ret < 0 && errno != EEXIST)
+                       perror_msg_and_fail("mkdirat(strace-test) failed");
+
+               btrfs_test_dir_fd = openat(rootfd, "strace-test",
+                                          O_RDONLY|O_DIRECTORY);
+               if (btrfs_test_dir_fd < 0)
+                       perror_msg_and_fail("openat(strace-test) failed");
+               close(rootfd);
+       } else
+               write_ok = false;
+
+       if (btrfs_test_root) {
+               fprintf(stderr, "Testing live ioctls on %s (%s)\n",
+                       btrfs_test_root, write_ok ? "read/write" : "read only");
+       }
+
+       btrfs_test_trans_ioctls();
+       btrfs_test_sync_ioctls();
+       btrfs_test_subvol_ioctls();
+       btrfs_test_balance_ioctls();
+       btrfs_test_device_ioctls();
+       btrfs_test_clone_ioctls();
+       btrfs_test_defrag_ioctls();
+       btrfs_test_search_ioctls();
+       btrfs_test_ino_lookup_ioctl();
+       btrfs_test_space_info_ioctl();
+       btrfs_test_scrub_ioctls();
+       btrfs_test_dev_info_ioctl();
+       btrfs_test_ino_path_ioctls();
+       btrfs_test_set_received_subvol_ioctl();
+       btrfs_test_send_ioctl();
+       btrfs_test_quota_ctl_ioctl();
+       btrfs_test_qgroup_assign_ioctl();
+       btrfs_test_qgroup_create_ioctl();
+       btrfs_test_quota_rescan_ioctl();
+       btrfs_test_label_ioctls();
+       btrfs_test_get_dev_stats_ioctl();
+       btrfs_test_dev_replace_ioctl();
+       btrfs_test_extent_same_ioctl();
+       btrfs_test_features_ioctls();
+
+       puts("+++ exited with 0 +++");
+
+       return 0;
+}
diff --git a/tests/btrfs.test b/tests/btrfs.test
new file mode 100755 (executable)
index 0000000..2121b5b
--- /dev/null
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+# Check basic btrfs ioctl decoding.
+
+. "${srcdir=.}/ioctl.test"
index 0fb4affdd0a341134f5aa3ab8e49365a17261ae6..0fe17b15ddf037cd88dfba2c9a599820c271984b 100644 (file)
@@ -22,6 +22,8 @@ test_fiemap(void)
        printf(", fm_extent_count=%u})", args->fm_extent_count);
        ioctl(-1, FS_IOC_FIEMAP, args);
        printf(" = -1 EBADF (%m)\n");
+
+       /* The live version of this test is in btrfs.c */
 }
 
 /* clone and dedupe ioctls are in btrfs.c since they originated there */