[PATCH] device mapper ioctl
Mikulas Patocka
mpatocka at redhat.com
Wed Oct 19 20:31:13 UTC 2016
On Wed, 12 Oct 2016, Eugene Syromyatnikov wrote:
> Hello.
>
> Aside from additional checks themselves, this patchset also contains two
> notable changes:
> * Fix for the previous patchset - misplaced comma printing ("dm: Fix comma
> printing for the case when dm_target_msg structure is inaccessible").
> * Update of printstr_ex call, which enables proper handling of
> QUOTE_0_TERMINATED user style (it prints cropped string without ellipsis
> otherwise).
Hi
Here I'm sending the device mapper ioctl patch with these changes merged.
In this piece of code:
+ dm_arg_open3->target3.next = 0xdeadbeef;
+ dm_arg_open3->param3[0] = '\1';
+ dm_arg_open3->param3[1] = '\2';
+ dm_arg_open3->param1[2] = '\0';
there should be "dm_arg_open3->param3[2]" instead of
"dm_arg_open3->param1[2]". "dm_arg_open3->param1[2]" produces a warning
about access beyond the end of array.
Mikulas
Makefile.am | 1
configure.ac | 1
defs.h | 1
dm.c | 552 ++++++++++++++++++++++++++++++++++++++
ioctl.c | 4
tests/.gitignore | 2
tests/Makefile.am | 4
tests/ioctl_dm-v.c | 2
tests/ioctl_dm-v.test | 12
tests/ioctl_dm.c | 726 ++++++++++++++++++++++++++++++++++++++++++++++++++
tests/ioctl_dm.test | 12
util.c | 18 +
xlat/dm_flags.in | 19 +
13 files changed, 1351 insertions(+), 3 deletions(-)
Index: strace/Makefile.am
===================================================================
--- strace.orig/Makefile.am
+++ strace/Makefile.am
@@ -97,6 +97,7 @@ strace_SOURCES = \
desc.c \
dirent.c \
dirent64.c \
+ dm.c \
empty.h \
epoll.c \
evdev.c \
Index: strace/configure.ac
===================================================================
--- strace.orig/configure.ac
+++ strace/configure.ac
@@ -354,6 +354,7 @@ AC_CHECK_HEADERS(m4_normalize([
elf.h
inttypes.h
linux/bsg.h
+ linux/dm-ioctl.h
linux/dqblk_xfs.h
linux/falloc.h
linux/fiemap.h
Index: strace/defs.h
===================================================================
--- strace.orig/defs.h
+++ strace/defs.h
@@ -636,6 +636,7 @@ extern void print_struct_statfs64(struct
extern void print_ifindex(unsigned int);
+extern int dm_ioctl(struct tcb *, const unsigned int, long);
extern int file_ioctl(struct tcb *, const unsigned int, long);
extern int fs_x_ioctl(struct tcb *, const unsigned int, long);
extern int loop_ioctl(struct tcb *, const unsigned int, long);
Index: strace/dm.c
===================================================================
--- /dev/null
+++ strace/dm.c
@@ -0,0 +1,552 @@
+#include "defs.h"
+
+#ifdef HAVE_LINUX_DM_IOCTL_H
+
+# include <inttypes.h>
+# include <linux/dm-ioctl.h>
+# include <sys/ioctl.h>
+
+# if DM_VERSION_MAJOR == 4
+
+/* Definitions for command which have been added later */
+
+# ifndef DM_LIST_VERSIONS
+# define DM_LIST_VERSIONS _IOWR(DM_IOCTL, 0xd, struct dm_ioctl)
+# endif
+# ifndef DM_TARGET_MSG
+# define DM_TARGET_MSG _IOWR(DM_IOCTL, 0xe, struct dm_ioctl)
+# endif
+# ifndef DM_DEV_SET_GEOMETRY
+# define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, 0xf, struct dm_ioctl)
+# endif
+
+
+static void
+dm_decode_device(const unsigned int code, const struct dm_ioctl *ioc)
+{
+ switch (code) {
+ case DM_REMOVE_ALL:
+ case DM_LIST_DEVICES:
+ case DM_LIST_VERSIONS:
+ break;
+ default:
+ if (ioc->dev)
+ tprintf(", dev=makedev(%u, %u)",
+ major(ioc->dev), minor(ioc->dev));
+ if (ioc->name[0]) {
+ tprints(", name=");
+ print_quoted_string(ioc->name, DM_NAME_LEN,
+ QUOTE_0_TERMINATED);
+ }
+ if (ioc->uuid[0]) {
+ tprints(", uuid=");
+ print_quoted_string(ioc->uuid, DM_UUID_LEN,
+ QUOTE_0_TERMINATED);
+ }
+ break;
+ }
+}
+
+static void
+dm_decode_values(struct tcb *tcp, const unsigned int code,
+ const struct dm_ioctl *ioc)
+{
+ if (entering(tcp)) {
+ switch (code) {
+ case DM_TABLE_LOAD:
+ tprintf(", target_count=%" PRIu32,
+ ioc->target_count);
+ break;
+ case DM_DEV_SUSPEND:
+ if (ioc->flags & DM_SUSPEND_FLAG)
+ break;
+ /* Fall through */
+ case DM_DEV_RENAME:
+ case DM_DEV_REMOVE:
+ case DM_DEV_WAIT:
+ tprintf(", event_nr=%" PRIu32,
+ ioc->event_nr);
+ break;
+ }
+ } else if (!syserror(tcp)) {
+ switch (code) {
+ case DM_DEV_CREATE:
+ case DM_DEV_RENAME:
+ case DM_DEV_SUSPEND:
+ case DM_DEV_STATUS:
+ case DM_DEV_WAIT:
+ case DM_TABLE_LOAD:
+ case DM_TABLE_CLEAR:
+ case DM_TABLE_DEPS:
+ case DM_TABLE_STATUS:
+ case DM_TARGET_MSG:
+ tprintf(", target_count=%" PRIu32,
+ ioc->target_count);
+ tprintf(", open_count=%" PRIu32,
+ ioc->open_count);
+ tprintf(", event_nr=%" PRIu32,
+ ioc->event_nr);
+ break;
+ }
+ }
+}
+
+#include "xlat/dm_flags.h"
+
+static void
+dm_decode_flags(const struct dm_ioctl *ioc)
+{
+ tprints(", flags=");
+ printflags(dm_flags, ioc->flags, "DM_???");
+}
+
+static void
+dm_decode_dm_target_spec(struct tcb *tcp, unsigned long addr,
+ const struct dm_ioctl *ioc)
+{
+ static const uint32_t target_spec_size =
+ sizeof(struct dm_target_spec);
+ uint32_t i;
+ uint32_t offset = ioc->data_start;
+
+ if (abbrev(tcp)) {
+ if (ioc->target_count)
+ tprints(", ...");
+
+ return;
+ }
+
+ for (i = 0; i < ioc->target_count; i++) {
+ struct dm_target_spec s;
+ uint32_t new_offset;
+
+ if ((offset + target_spec_size) <= offset ||
+ (offset + target_spec_size) > ioc->data_size)
+ goto misplaced;
+
+ tprints(", ");
+
+ if (i >= max_strlen) {
+ tprints("...");
+ break;
+ }
+
+ if (umove_or_printaddr(tcp, addr + offset, &s))
+ break;
+
+ tprintf("{sector_start=%" PRI__u64 ", length=%" PRI__u64,
+ s.sector_start, s.length);
+
+ if (!entering(tcp))
+ tprintf(", status=%" PRId32, s.status);
+
+ tprints(", target_type=");
+ print_quoted_string(s.target_type, DM_MAX_TYPE_NAME,
+ QUOTE_0_TERMINATED);
+
+ tprints(", string=");
+ printstr_ex(tcp, addr + offset + target_spec_size,
+ ioc->data_size - (offset + target_spec_size),
+ QUOTE_0_TERMINATED);
+ tprintf("}");
+
+ if (entering(tcp))
+ new_offset = offset + s.next;
+ else
+ new_offset = ioc->data_start + s.next;
+
+ if (new_offset <= offset + target_spec_size)
+ goto misplaced;
+
+ offset = new_offset;
+ }
+
+ return;
+
+misplaced:
+ tprints(", /* misplaced struct dm_target_spec */ ...");
+}
+
+bool
+dm_print_dev(struct tcb *tcp, void *dev_ptr, size_t dev_size, void *dummy)
+{
+ uint64_t *dev = (uint64_t *) dev_ptr;
+
+ tprintf("makedev(%u, %u)", major(*dev), minor(*dev));
+
+ return 1;
+}
+
+static void
+dm_decode_dm_target_deps(struct tcb *tcp, unsigned long addr,
+ const struct dm_ioctl *ioc)
+{
+ static const uint32_t target_deps_dev_offs =
+ offsetof(struct dm_target_deps, dev);
+ uint64_t dev_buf;
+ struct dm_target_deps s;
+ uint32_t offset = ioc->data_start;
+ uint32_t space;
+
+ if (abbrev(tcp)) {
+ tprints(", ...");
+ return;
+ }
+
+ tprints(", ");
+
+ if (offset + target_deps_dev_offs <= offset ||
+ offset + target_deps_dev_offs > ioc->data_size)
+ goto misplaced;
+
+ if (umove_or_printaddr(tcp, addr + offset, &s))
+ return;
+
+ space = (ioc->data_size - offset - target_deps_dev_offs) / sizeof(__u64);
+
+ if (s.count > space)
+ goto misplaced;
+
+ tprintf("{count=%" PRIu32 ", deps=", s.count);
+
+ print_array(tcp, addr + offset + target_deps_dev_offs, s.count,
+ &dev_buf, sizeof(dev_buf), umoven_or_printaddr,
+ dm_print_dev, NULL);
+
+ tprints("}");
+
+ return;
+
+misplaced:
+ tprints("/* misplaced struct dm_target_deps */ ...");
+}
+
+static void
+dm_decode_dm_name_list(struct tcb *tcp, unsigned long addr,
+ const struct dm_ioctl *ioc)
+{
+ static const uint32_t name_list_name_offs =
+ offsetof(struct dm_name_list, name);
+ struct dm_name_list s;
+ uint32_t offset = ioc->data_start;
+ uint32_t count;
+
+ if (abbrev(tcp)) {
+ tprints(", ...");
+ return;
+ }
+
+ for (count = 0;; count++) {
+ if (offset + name_list_name_offs <= offset ||
+ offset + name_list_name_offs > ioc->data_size)
+ goto misplaced;
+
+ tprints(", ");
+
+ if (count >= max_strlen) {
+ tprints("...");
+ break;
+ }
+
+ if (umove_or_printaddr(tcp, addr + offset, &s))
+ break;
+ if (!count && !s.dev) {
+ tprints("/* no devices present */");
+ break;
+ }
+
+ tprintf("{dev=makedev(%u, %u), name=", major(s.dev),
+ minor(s.dev));
+ printstr_ex(tcp, addr + offset + name_list_name_offs,
+ ioc->data_size - (offset + name_list_name_offs),
+ QUOTE_0_TERMINATED);
+ tprints("}");
+
+ if (!s.next)
+ break;
+ if (offset + s.next <= offset + name_list_name_offs)
+ goto misplaced;
+ offset = offset + s.next;
+ }
+
+ return;
+
+misplaced:
+ tprints(", /* misplaced struct dm_name_list */ ...");
+}
+
+static void
+dm_decode_dm_target_versions(struct tcb *tcp, unsigned long addr,
+ const struct dm_ioctl *ioc)
+{
+ static const uint32_t target_vers_name_offs =
+ offsetof(struct dm_target_versions, name);
+ struct dm_target_versions s;
+ uint32_t offset = ioc->data_start;
+ uint32_t count;
+
+ if (abbrev(tcp)) {
+ tprints(", ...");
+ return;
+ }
+
+ for (count = 0;; count++) {
+ if (offset + target_vers_name_offs <= offset ||
+ offset + target_vers_name_offs > ioc->data_size)
+ goto misplaced;
+
+ tprints(", ");
+
+ if (count >= max_strlen) {
+ tprints("...");
+ break;
+ }
+
+ if (umove_or_printaddr(tcp, addr + offset, &s))
+ break;
+
+ tprints("{name=");
+ printstr_ex(tcp, addr + offset + target_vers_name_offs,
+ ioc->data_size - (offset + target_vers_name_offs),
+ QUOTE_0_TERMINATED);
+ tprintf(", version=%" PRIu32 ".%" PRIu32 ".%" PRIu32 "}",
+ s.version[0], s.version[1], s.version[2]);
+
+ if (!s.next)
+ break;
+ if (offset + s.next <= offset + target_vers_name_offs)
+ goto misplaced;
+ offset = offset + s.next;
+ }
+
+ return;
+
+misplaced:
+ tprints(", /* misplaced struct dm_target_versions */ ...");
+}
+
+static void
+dm_decode_dm_target_msg(struct tcb *tcp, unsigned long addr,
+ const struct dm_ioctl *ioc)
+{
+ static const uint32_t target_msg_message_offs =
+ offsetof(struct dm_target_msg, message);
+ uint32_t offset = ioc->data_start;
+
+ if (abbrev(tcp)) {
+ tprints(", ...");
+ return;
+ }
+
+ if (offset + target_msg_message_offs > offset &&
+ offset + target_msg_message_offs <= ioc->data_size) {
+ struct dm_target_msg s;
+
+ tprints(", ");
+
+ if (umove_or_printaddr(tcp, addr + offset, &s))
+ return;
+
+ tprintf("{sector=%" PRI__u64 ", message=", s.sector);
+ printstr_ex(tcp, addr + offset + target_msg_message_offs,
+ ioc->data_size - offset - target_msg_message_offs,
+ QUOTE_0_TERMINATED);
+ tprints("}");
+ } else {
+ tprints(", /* misplaced struct dm_target_msg */");
+ }
+}
+
+static void
+dm_decode_string(struct tcb *tcp, unsigned long addr,
+ const struct dm_ioctl *ioc)
+{
+ uint32_t offset = ioc->data_start;
+
+ if (abbrev(tcp)) {
+ tprints(", ...");
+ return;
+ }
+
+ if (offset < ioc->data_size) {
+ tprints(", string=");
+ printstr_ex(tcp, addr + offset, ioc->data_size - offset,
+ QUOTE_0_TERMINATED);
+ } else {
+ tprints(", /* misplaced string */");
+ }
+}
+
+static inline bool
+dm_ioctl_has_params(const unsigned int code)
+{
+ switch (code) {
+ case DM_VERSION:
+ case DM_REMOVE_ALL:
+ case DM_DEV_CREATE:
+ case DM_DEV_REMOVE:
+ case DM_DEV_SUSPEND:
+ case DM_DEV_STATUS:
+ case DM_TABLE_CLEAR:
+ return false;
+ }
+
+ return true;
+}
+
+static int
+dm_known_ioctl(struct tcb *tcp, const unsigned int code, long arg)
+{
+ struct dm_ioctl *ioc = NULL;
+ struct dm_ioctl *entering_ioc = NULL;
+ bool ioc_changed = false;
+
+ ioc = malloc(sizeof(* ioc));
+ if (!ioc)
+ return 0;
+
+ if ((umoven(tcp, arg, sizeof(*ioc) - sizeof(ioc->data), ioc) < 0) ||
+ (ioc->data_size < offsetof(struct dm_ioctl, data_size))) {
+ free(ioc);
+ return 0;
+ }
+ if (entering(tcp))
+ set_tcb_priv_data(tcp, ioc, free);
+ else {
+ entering_ioc = get_tcb_priv_data(tcp);
+
+ /*
+ * retrieve_status, __dev_status called only in case of success,
+ * so it looks like there's no need to check open_count,
+ * event_nr, target_count, dev fields for change (they are
+ * printed only in case of absence of errors).
+ */
+ if (!entering_ioc ||
+ (ioc->version[0] != entering_ioc->version[0]) ||
+ (ioc->version[1] != entering_ioc->version[1]) ||
+ (ioc->version[2] != entering_ioc->version[2]) ||
+ (ioc->data_size != entering_ioc->data_size) ||
+ (ioc->data_start != entering_ioc->data_start) ||
+ (ioc->flags != entering_ioc->flags))
+ ioc_changed = true;
+ }
+
+ if (exiting(tcp) && syserror(tcp) && !ioc_changed) {
+ free(ioc);
+ return 1;
+ }
+
+ /*
+ * device mapper code uses %d in some places and %u in another, but
+ * fields themselves are declared as __u32.
+ */
+ tprintf("%s{version=%" PRIu32 ".%" PRIu32 ".%" PRIu32,
+ entering(tcp) ? ", " : " => ",
+ ioc->version[0], ioc->version[1], ioc->version[2]);
+ /*
+ * if we use a different version of ABI, do not attempt to decode
+ * ioctl fields
+ */
+ if (ioc->version[0] != DM_VERSION_MAJOR) {
+ tprints(", /* Unsupported device mapper ABI version */ ...");
+ goto skip;
+ }
+
+ tprintf(", data_size=%" PRIu32, ioc->data_size);
+
+ if (dm_ioctl_has_params(code))
+ tprintf(", data_start=%" PRIu32, ioc->data_start);
+
+ if (ioc->data_size < (sizeof(*ioc) - sizeof(ioc->data))) {
+ tprints(", /* Incorrect data_size */ ...");
+ goto skip;
+ }
+
+ dm_decode_device(code, ioc);
+ dm_decode_values(tcp, code, ioc);
+ dm_decode_flags(ioc);
+
+ switch (code) {
+ case DM_DEV_WAIT:
+ case DM_TABLE_STATUS:
+ if (entering(tcp) || syserror(tcp))
+ break;
+ dm_decode_dm_target_spec(tcp, arg, ioc);
+ break;
+ case DM_TABLE_LOAD:
+ if (!entering(tcp))
+ break;
+ dm_decode_dm_target_spec(tcp, arg, ioc);
+ break;
+ case DM_TABLE_DEPS:
+ if (entering(tcp) || syserror(tcp))
+ break;
+ dm_decode_dm_target_deps(tcp, arg, ioc);
+ break;
+ case DM_LIST_DEVICES:
+ if (entering(tcp) || syserror(tcp))
+ break;
+ dm_decode_dm_name_list(tcp, arg, ioc);
+ break;
+ case DM_LIST_VERSIONS:
+ if (entering(tcp) || syserror(tcp))
+ break;
+ dm_decode_dm_target_versions(tcp, arg, ioc);
+ break;
+ case DM_TARGET_MSG:
+ if (entering(tcp))
+ dm_decode_dm_target_msg(tcp, arg, ioc);
+ else if (!syserror(tcp) && ioc->flags & DM_DATA_OUT_FLAG)
+ dm_decode_string(tcp, arg, ioc);
+ break;
+ case DM_DEV_RENAME:
+ case DM_DEV_SET_GEOMETRY:
+ if (!entering(tcp))
+ break;
+ dm_decode_string(tcp, arg, ioc);
+ break;
+ }
+
+ skip:
+ tprints("}");
+ if (exiting(tcp))
+ free(ioc);
+ return 1;
+}
+
+int
+dm_ioctl(struct tcb *tcp, const unsigned int code, long arg)
+{
+ switch (code) {
+ case DM_VERSION:
+ case DM_REMOVE_ALL:
+ case DM_LIST_DEVICES:
+ case DM_DEV_CREATE:
+ case DM_DEV_REMOVE:
+ case DM_DEV_RENAME:
+ case DM_DEV_SUSPEND:
+ case DM_DEV_STATUS:
+ case DM_DEV_WAIT:
+ case DM_TABLE_LOAD:
+ case DM_TABLE_CLEAR:
+ case DM_TABLE_DEPS:
+ case DM_TABLE_STATUS:
+ case DM_LIST_VERSIONS:
+ case DM_TARGET_MSG:
+ case DM_DEV_SET_GEOMETRY:
+ return dm_known_ioctl(tcp, code, arg);
+ default:
+ return 0;
+ }
+}
+
+# else /* !(DM_VERSION_MAJOR == 4) */
+
+int
+dm_ioctl(struct tcb *tcp, const unsigned int code, long arg)
+{
+ return 0;
+}
+
+# endif /* DM_VERSION_MAJOR == 4 */
+#endif /* HAVE_LINUX_DM_IOCTL_H */
Index: strace/ioctl.c
===================================================================
--- strace.orig/ioctl.c
+++ strace/ioctl.c
@@ -282,6 +282,10 @@ ioctl_decode(struct tcb *tcp)
case 0x94:
return btrfs_ioctl(tcp, code, arg);
#endif
+#ifdef HAVE_LINUX_DM_IOCTL_H
+ case 0xfd:
+ return dm_ioctl(tcp, code, arg);
+#endif
default:
break;
}
Index: strace/tests/Makefile.am
===================================================================
--- strace.orig/tests/Makefile.am
+++ strace/tests/Makefile.am
@@ -162,6 +162,8 @@ check_PROGRAMS = \
inet-cmsg \
ioctl \
ioctl_block \
+ ioctl_dm \
+ ioctl_dm-v \
ioctl_evdev \
ioctl_evdev-v \
ioctl_mtd \
@@ -507,6 +509,8 @@ DECODER_TESTS = \
inet-cmsg.test \
ioctl.test \
ioctl_block.test \
+ ioctl_dm.test \
+ ioctl_dm-v.test \
ioctl_evdev.test \
ioctl_evdev-v.test \
ioctl_mtd.test \
Index: strace/tests/ioctl_dm.c
===================================================================
--- /dev/null
+++ strace/tests/ioctl_dm.c
@@ -0,0 +1,726 @@
+#include "tests.h"
+
+#ifdef HAVE_LINUX_DM_IOCTL_H
+
+# include <errno.h>
+# include <inttypes.h>
+# include <stdbool.h>
+# include <stdio.h>
+# include <stddef.h>
+# include <string.h>
+# include <sys/ioctl.h>
+# include <linux/dm-ioctl.h>
+
+# ifndef VERBOSE
+# define VERBOSE 0
+# endif
+
+# define STR32 "AbCdEfGhIjKlMnOpQrStUvWxYz012345"
+
+static const char str129[] = STR32 STR32 STR32 STR32 "6";
+
+static const __u64 dts_sector_base = (__u64) 0xdeadca75facef157ULL;
+static const __u64 dts_sector_step = (__u64) 0x100000001ULL;
+static const __u64 dts_length_base = (__u64) 0xbadc0dedda7a1057ULL;
+static const __u64 dts_length_step = (__u64) 0x700000007ULL;
+static const __s32 dts_status_base = (__s32) 3141592653U;
+static const __s32 dts_status_step = 0x1234;
+
+static struct s {
+ struct dm_ioctl ioc;
+ union {
+ struct {
+ struct dm_target_spec target_spec;
+ char target_params[256];
+ } ts;
+ struct {
+ struct dm_target_msg target_msg;
+ char target_string[256];
+ } tm;
+ char string[256];
+ } u;
+} s;
+
+struct dm_table_open_test {
+ struct dm_ioctl ioc;
+ struct dm_target_spec target0;
+ char param0[1];
+ struct dm_target_spec target1;
+ char param1[2];
+ struct dm_target_spec target2;
+ char param2[3];
+ struct dm_target_spec target3;
+ char param3[4];
+ struct dm_target_spec target4;
+ char param4[5];
+ struct dm_target_spec target5;
+ char param5[6];
+ struct dm_target_spec target6;
+ char param6[7];
+ struct dm_target_spec target7;
+ char param7[8];
+ struct dm_target_spec target8;
+ char param8[9];
+ struct dm_target_spec target9;
+ char param9[10];
+};
+
+struct dm_target_msg_test {
+ struct dm_ioctl ioc;
+ struct dm_target_msg msg;
+};
+
+struct args {
+ unsigned int arg;
+ const char *str;
+ bool has_params;
+ bool has_event_nr;
+};
+
+
+static void
+init_s(struct dm_ioctl *s, size_t size, size_t offs)
+{
+ memset(s, 0, size);
+ s->version[0] = DM_VERSION_MAJOR;
+ s->version[1] = 1;
+ s->version[2] = 2;
+ s->data_size = size;
+ s->data_start = offs;
+ s->dev = 0x1234;
+ strcpy(s->name, "nnn");
+ strcpy(s->uuid, "uuu");
+}
+
+static void
+init_dm_target_spec(struct dm_target_spec *ptr, uint32_t id)
+{
+ ptr->sector_start = dts_sector_base + dts_sector_step * id;
+ ptr->length = dts_length_base + dts_length_step * id;
+ ptr->status = dts_status_base + dts_status_step * id;
+
+ strncpy(ptr->target_type, str129 +
+ id % (sizeof(str129) - sizeof(ptr->target_type)),
+ id % (sizeof(ptr->target_type) + 1));
+ if (id % (sizeof(ptr->target_type) + 1) < sizeof(ptr->target_type))
+ ptr->target_type[id % (sizeof(ptr->target_type) + 1)] = '\0';
+}
+
+# if VERBOSE
+static void
+print_dm_target_spec(struct dm_target_spec *ptr, uint32_t id)
+{
+ printf("{sector_start=%" PRI__u64 ", length=%" PRI__u64 ", "
+ "target_type=\"%.*s\", string=",
+ dts_sector_base + dts_sector_step * id,
+ dts_length_base + dts_length_step * id,
+ (int) (id % (sizeof(ptr->target_type) + 1)),
+ str129 + id % (sizeof(str129) - sizeof(ptr->target_type)));
+}
+# endif /* VERBOSE */
+
+# define ARG_STR(_arg) (_arg), #_arg
+
+int
+main(void)
+{
+ /* We can't check these properly for now */
+ static struct args dummy_check_cmds_nodev[] = {
+ { ARG_STR(DM_REMOVE_ALL), false },
+ { ARG_STR(DM_LIST_DEVICES), true },
+ { ARG_STR(DM_LIST_VERSIONS), true },
+ };
+ static struct args dummy_check_cmds[] = {
+ { ARG_STR(DM_DEV_CREATE), false },
+ { ARG_STR(DM_DEV_REMOVE), false, true },
+ { ARG_STR(DM_DEV_STATUS), false },
+ { ARG_STR(DM_DEV_WAIT), true, true },
+ { ARG_STR(DM_TABLE_CLEAR), false },
+ { ARG_STR(DM_TABLE_DEPS), true },
+ { ARG_STR(DM_TABLE_STATUS), true },
+ };
+
+ struct dm_ioctl *dm_arg =
+ tail_alloc(sizeof(*dm_arg) - sizeof(dm_arg->data));
+ struct dm_table_open_test *dm_arg_open1 =
+ tail_alloc(offsetof(struct dm_table_open_test, target1));
+ struct dm_table_open_test *dm_arg_open2 =
+ tail_alloc(offsetof(struct dm_table_open_test, param1));
+ struct dm_table_open_test *dm_arg_open3 =
+ tail_alloc(offsetof(struct dm_table_open_test, target9));
+ struct dm_target_msg_test *dm_arg_msg =
+ tail_alloc(sizeof(*dm_arg_msg));
+
+ int saved_errno;
+ unsigned int i;
+
+
+ /* Incorrect operation */
+ ioctl(-1, _IOW(DM_IOCTL, 0xde, int), dm_arg);
+ printf("ioctl(-1, _IOC(_IOC_WRITE, %#04x, 0xde, %#04zx), %p) = "
+ "-1 EBADF (%m)\n",
+ DM_IOCTL, sizeof(int), dm_arg);
+
+
+ /* DM_VERSION */
+ /* Incorrect pointer */
+ ioctl(-1, DM_VERSION, dm_arg + 1);
+ printf("ioctl(-1, DM_VERSION, %p) = -1 EBADF (%m)\n", dm_arg + 1);
+
+ /* Incorrect data_size */
+ init_s(dm_arg, 0, 0);
+ ioctl(-1, DM_VERSION, &s);
+ printf("ioctl(-1, DM_VERSION, %p) = -1 EBADF (%m)\n", &s);
+
+ /* Incorrect version */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0);
+ dm_arg->version[0] = 0xbadc0ded;
+ dm_arg->version[1] = 0xbadc0dee;
+ dm_arg->version[2] = 0xbadc0def;
+ ioctl(-1, DM_VERSION, dm_arg);
+ printf("ioctl(-1, DM_VERSION, {version=%u.%u.%u, "
+ "/* Unsupported device mapper ABI version */ ...}) = "
+ "-1 EBADF (%m)\n", 0xbadc0ded, 0xbadc0dee, 0xbadc0def);
+
+ /* Incorrect data_size */
+ init_s(dm_arg, 14, 64);
+ ioctl(-1, DM_VERSION, dm_arg);
+ printf("ioctl(-1, DM_VERSION, {version=4.1.2, data_size=14, "
+ "/* Incorrect data_size */ ...}) = -1 EBADF (%m)\n");
+
+ /* Unterminated name/uuid */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0);
+ strncpy(dm_arg->name, str129, sizeof(dm_arg->name));
+ strncpy(dm_arg->uuid, str129, sizeof(dm_arg->uuid));
+ ioctl(-1, DM_VERSION, dm_arg);
+ printf("ioctl(-1, DM_VERSION, {version=4.1.2, data_size=%zu, "
+ "dev=makedev(18, 52), name=\"%.127s\", uuid=\"%.128s\", "
+ "flags=0}) = -1 EBADF (%m)\n",
+ sizeof(*dm_arg) - sizeof(dm_arg->data), str129, str129);
+
+ /* Normal call */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0);
+ ioctl(-1, DM_VERSION, dm_arg);
+ printf("ioctl(-1, DM_VERSION, "
+ "{version=4.1.2, data_size=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0}) = "
+ "-1 EBADF (%m)\n", sizeof(*dm_arg) - sizeof(dm_arg->data));
+
+ /* Zero dev, name, uuid */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0);
+ dm_arg->data_size = 0xfacefeed;
+ dm_arg->dev = 0;
+ dm_arg->name[0] = '\0';
+ dm_arg->uuid[0] = '\0';
+ ioctl(-1, DM_VERSION, dm_arg);
+ printf("ioctl(-1, DM_VERSION, "
+ "{version=4.1.2, data_size=%u, flags=0}) = "
+ "-1 EBADF (%m)\n", 0xfacefeed);
+
+ /* Flag */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0);
+ dm_arg->flags = 0xffffffff;
+ ioctl(-1, DM_VERSION, dm_arg);
+ printf("ioctl(-1, DM_VERSION, "
+ "{version=4.1.2, data_size=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags="
+ "DM_READONLY_FLAG|DM_SUSPEND_FLAG|DM_EXISTS_FLAG|"
+ "DM_PERSISTENT_DEV_FLAG|DM_STATUS_TABLE_FLAG|"
+ "DM_ACTIVE_PRESENT_FLAG|DM_INACTIVE_PRESENT_FLAG|"
+ "DM_BUFFER_FULL_FLAG|DM_SKIP_BDGET_FLAG|DM_SKIP_LOCKFS_FLAG|"
+ "DM_NOFLUSH_FLAG|DM_QUERY_INACTIVE_TABLE_FLAG|"
+ "DM_UEVENT_GENERATED_FLAG|DM_UUID_FLAG|DM_SECURE_DATA_FLAG|"
+ "DM_DATA_OUT_FLAG|DM_DEFERRED_REMOVE|DM_INTERNAL_SUSPEND_FLAG|"
+ "0xfff80080}) = -1 EBADF (%m)\n",
+ sizeof(*dm_arg) - sizeof(dm_arg->data));
+
+ /* Normal call */
+ init_s(&s.ioc, sizeof(s.ioc), 0);
+ ioctl(-1, DM_VERSION, &s);
+ printf("ioctl(-1, DM_VERSION, "
+ "{version=4.1.2, data_size=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0}) = "
+ "-1 EBADF (%m)\n", sizeof(s.ioc));
+
+
+ /* DM_REMOVE_ALL */
+ /* DM_LIST_DEVICES */
+ /* DM_LIST_VERSIONS */
+ for (i = 0; i < ARRAY_SIZE(dummy_check_cmds_nodev); i++) {
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0);
+ ioctl(-1, dummy_check_cmds_nodev[i].arg, dm_arg);
+ printf("ioctl(-1, %s, {version=4.1.2, data_size=%zu%s, "
+ "flags=0}) = -1 EBADF (%m)\n",
+ dummy_check_cmds_nodev[i].str,
+ sizeof(*dm_arg) - sizeof(dm_arg->data),
+ dummy_check_cmds_nodev[i].has_params ?
+ ", data_start=0" : "");
+ }
+
+
+ /* DM_DEV_CREATE */
+ /* DM_DEV_REMOVE */
+ /* DM_DEV_STATUS */
+ /* DM_DEV_WAIT */
+ /* DM_TABLE_CLEAR */
+ /* DM_TABLE_DEPS */
+ /* DM_TABLE_STATUS */
+ for (i = 0; i < ARRAY_SIZE(dummy_check_cmds); i++) {
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0);
+ ioctl(-1, dummy_check_cmds[i].arg, dm_arg);
+ printf("ioctl(-1, %s, {version=4.1.2, data_size=%zu%s, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\"%s, "
+ "flags=0}) = -1 EBADF (%m)\n", dummy_check_cmds[i].str,
+ sizeof(*dm_arg) - sizeof(dm_arg->data),
+ dummy_check_cmds[i].has_params ? ", data_start=0" : "",
+ dummy_check_cmds[i].has_event_nr ? ", event_nr=0" : "");
+ }
+
+
+ /* DM_DEV_SUSPEND */
+ init_s(&s.ioc, sizeof(s.ioc), 0);
+ s.ioc.flags = DM_SUSPEND_FLAG;
+ s.ioc.event_nr = 0xbadc0ded;
+ ioctl(-1, DM_DEV_SUSPEND, &s);
+ printf("ioctl(-1, DM_DEV_SUSPEND, "
+ "{version=4.1.2, data_size=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "flags=DM_SUSPEND_FLAG}) = -1 EBADF (%m)\n", sizeof(s.ioc));
+
+ init_s(&s.ioc, sizeof(s.ioc), 0);
+ s.ioc.event_nr = 0xbadc0ded;
+ ioctl(-1, DM_DEV_SUSPEND, &s);
+ printf("ioctl(-1, DM_DEV_SUSPEND, "
+ "{version=4.1.2, data_size=%zu, dev=makedev(18, 52), "
+ "name=\"nnn\", uuid=\"uuu\", event_nr=3134983661, "
+ "flags=0}) = -1 EBADF (%m)\n", sizeof(s.ioc));
+
+
+ /* DM_TABLE_LOAD */
+ init_s(&s.ioc, sizeof(s), offsetof(struct s, u));
+ s.ioc.target_count = 1;
+ s.u.ts.target_spec.sector_start = 0x10;
+ s.u.ts.target_spec.length = 0x20;
+ s.u.ts.target_spec.next =
+ sizeof(s.u.ts.target_spec) + sizeof(s.u.ts.target_params);
+ strcpy(s.u.ts.target_spec.target_type, "tgt");
+ strcpy(s.u.ts.target_params, "tparams");
+ ioctl(-1, DM_TABLE_LOAD, &s);
+ printf("ioctl(-1, DM_TABLE_LOAD, "
+ "{version=4.1.2, data_size=%u, data_start=%u, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "target_count=1, flags=0, "
+# if VERBOSE
+ "{sector_start=16, length=32, target_type=\"tgt\", "
+ "string=\"tparams\"}"
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n", s.ioc.data_size, s.ioc.data_start);
+
+ /* No targets */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data),
+ sizeof(*dm_arg) - sizeof(dm_arg->data));
+ dm_arg->data_size = sizeof(*dm_arg);
+ dm_arg->target_count = 0;
+ ioctl(-1, DM_TABLE_LOAD, dm_arg);
+ printf("ioctl(-1, DM_TABLE_LOAD, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "target_count=0, flags=0}) = -1 EBADF (%m)\n", sizeof(*dm_arg),
+ sizeof(*dm_arg) - sizeof(dm_arg->data));
+
+ /* Invalid data_start */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0xfffffff8);
+ dm_arg->data_size = sizeof(*dm_arg);
+ dm_arg->target_count = 1234;
+ ioctl(-1, DM_TABLE_LOAD, dm_arg);
+ printf("ioctl(-1, DM_TABLE_LOAD, "
+ "{version=4.1.2, data_size=%zu, data_start=%u, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "target_count=1234, flags=0, "
+# if VERBOSE
+ "/* misplaced struct dm_target_spec */ ..."
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n", sizeof(*dm_arg), 0xfffffff8);
+
+ /* Inaccessible pointer */
+ init_s(&dm_arg_open1->ioc, offsetof(struct dm_table_open_test, target1),
+ offsetof(struct dm_table_open_test, target1));
+ dm_arg_open1->ioc.data_size = sizeof(*dm_arg_open1);
+ dm_arg_open1->ioc.target_count = 0xdeaddea1;
+ ioctl(-1, DM_TABLE_LOAD, dm_arg_open1);
+ printf("ioctl(-1, DM_TABLE_LOAD, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "target_count=3735936673, flags=0, "
+# if VERBOSE
+ "%p"
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n", sizeof(*dm_arg_open1),
+ offsetof(struct dm_table_open_test, target1)
+# if VERBOSE
+ , (char *) dm_arg_open1 +
+ offsetof(struct dm_table_open_test, target1)
+# endif /* VERBOSE */
+ );
+
+ /* Inaccessible string */
+ init_s(&dm_arg_open2->ioc, offsetof(struct dm_table_open_test, param1),
+ offsetof(struct dm_table_open_test, target1));
+ dm_arg_open2->ioc.data_size = sizeof(*dm_arg_open2);
+ dm_arg_open2->ioc.target_count = 2;
+ init_dm_target_spec(&dm_arg_open2->target1, 7);
+ dm_arg_open2->target1.next =
+ offsetof(struct dm_table_open_test, target3) -
+ offsetof(struct dm_table_open_test, target1);
+ ioctl(-1, DM_TABLE_LOAD, dm_arg_open2);
+ saved_errno = errno;
+ printf("ioctl(-1, DM_TABLE_LOAD, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "target_count=2, flags=0, ",
+ sizeof(*dm_arg_open2),
+ offsetof(struct dm_table_open_test, target1));
+# if VERBOSE
+ print_dm_target_spec(&dm_arg_open2->target1, 7);
+ printf("%p}, %p",
+ (char *) dm_arg_open2 +
+ offsetof(struct dm_table_open_test, param1),
+ (char *) dm_arg_open2 +
+ offsetof(struct dm_table_open_test, target3));
+# else /* !VERBOSE */
+ printf("...");
+# endif /* VERBOSE */
+ errno = saved_errno;
+ printf("}) = -1 EBADF (%m)\n");
+
+ /* Incorrect next */
+ init_s(&dm_arg_open3->ioc, offsetof(struct dm_table_open_test, target5),
+ offsetof(struct dm_table_open_test, target0));
+ dm_arg_open3->ioc.target_count = 4;
+
+ init_dm_target_spec(&dm_arg_open3->target0, 9);
+ dm_arg_open3->target0.next =
+ offsetof(struct dm_table_open_test, target1) -
+ offsetof(struct dm_table_open_test, target0);
+ dm_arg_open3->param0[0] = '\0';
+
+ init_dm_target_spec(&dm_arg_open3->target1, 15);
+ dm_arg_open3->target1.next =
+ offsetof(struct dm_table_open_test, target3) -
+ offsetof(struct dm_table_open_test, target1);
+ dm_arg_open3->param1[0] = '\377';
+ dm_arg_open3->param1[1] = '\0';
+
+ init_dm_target_spec(&dm_arg_open3->target3, 42);
+ dm_arg_open3->target3.next = 0xdeadbeef;
+ dm_arg_open3->param3[0] = '\1';
+ dm_arg_open3->param3[1] = '\2';
+ dm_arg_open3->param3[2] = '\0';
+
+ ioctl(-1, DM_TABLE_LOAD, dm_arg_open3);
+ saved_errno = errno;
+ printf("ioctl(-1, DM_TABLE_LOAD, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "target_count=4, flags=0, ",
+ offsetof(struct dm_table_open_test, target5),
+ offsetof(struct dm_table_open_test, target0));
+# if VERBOSE
+ print_dm_target_spec(&dm_arg_open3->target0, 9);
+ printf("\"\"}, ");
+ print_dm_target_spec(&dm_arg_open3->target1, 15);
+ printf("\"\\377\"}, ");
+ print_dm_target_spec(&dm_arg_open3->target1, 42);
+ errno = saved_errno;
+ printf("\"\\1\\2\"}, /* misplaced struct dm_target_spec */ ...");
+# else /* !VERBOSE */
+ printf("...");
+# endif /* VERBOSE */
+ errno = saved_errno;
+ printf("}) = -1 EBADF (%m)\n");
+
+ #define FILL_DM_TARGET(id, id_next) \
+ do { \
+ init_dm_target_spec(&dm_arg_open3->target##id, id); \
+ dm_arg_open3->target##id.next = \
+ offsetof(struct dm_table_open_test, \
+ target##id_next) - \
+ offsetof(struct dm_table_open_test, \
+ target##id); \
+ strncpy(dm_arg_open3->param##id, str129 + id * 2, id); \
+ dm_arg_open3->param##id[id] = '\0'; \
+ } while (0)
+ #define PRINT_DM_TARGET(id) \
+ do { \
+ print_dm_target_spec(&dm_arg_open3->target##id, id); \
+ printf("\"%.*s\"}, ", id, str129 + id * 2); \
+ } while (0)
+
+ /* max_strlen limit */
+ init_s(&dm_arg_open3->ioc, offsetof(struct dm_table_open_test, target9),
+ offsetof(struct dm_table_open_test, target0));
+ dm_arg_open3->ioc.data_size = sizeof(*dm_arg_open3);
+ dm_arg_open3->ioc.target_count = 0xbadc0ded;
+ FILL_DM_TARGET(0, 1);
+ FILL_DM_TARGET(1, 2);
+ FILL_DM_TARGET(2, 3);
+ FILL_DM_TARGET(3, 4);
+ FILL_DM_TARGET(4, 5);
+ FILL_DM_TARGET(5, 6);
+ FILL_DM_TARGET(6, 7);
+ FILL_DM_TARGET(7, 8);
+ FILL_DM_TARGET(8, 9);
+ ioctl(-1, DM_TABLE_LOAD, dm_arg_open3);
+ saved_errno = errno;
+ printf("ioctl(-1, DM_TABLE_LOAD, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "target_count=3134983661, flags=0, ",
+ sizeof(*dm_arg_open3),
+ offsetof(struct dm_table_open_test, target0));
+# if VERBOSE
+ PRINT_DM_TARGET(0);
+ PRINT_DM_TARGET(1);
+ PRINT_DM_TARGET(2);
+ PRINT_DM_TARGET(3);
+ PRINT_DM_TARGET(4);
+ PRINT_DM_TARGET(5);
+ PRINT_DM_TARGET(6);
+ PRINT_DM_TARGET(7);
+ PRINT_DM_TARGET(8);
+# endif /* VERBOSE */
+ errno = saved_errno;
+ printf("...}) = -1 EBADF (%m)\n");
+
+
+ /* DM_TARGET_MSG */
+ init_s(&s.ioc, sizeof(s), offsetof(struct s, u));
+ s.u.tm.target_msg.sector = 0x1234;
+ strcpy(s.u.string + offsetof(struct dm_target_msg, message),
+ "long target msg");
+ ioctl(-1, DM_TARGET_MSG, &s);
+ printf("ioctl(-1, DM_TARGET_MSG, "
+ "{version=4.1.2, data_size=%u, data_start=%u, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0, "
+# if VERBOSE
+ "{sector=4660, message=\"long targ\"...}"
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ s.ioc.data_size, s.ioc.data_start);
+
+ /* Invalid data_start */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data),
+ sizeof(*dm_arg) - sizeof(dm_arg->data));
+ dm_arg->data_size = sizeof(*dm_arg);
+ ioctl(-1, DM_TARGET_MSG, dm_arg);
+ printf("ioctl(-1, DM_TARGET_MSG, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0, "
+# if VERBOSE
+ "/* misplaced struct dm_target_msg */"
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ sizeof(*dm_arg), sizeof(*dm_arg) - sizeof(dm_arg->data));
+
+ /* Invalid data_start */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0xffffffff);
+ dm_arg->data_size = sizeof(*dm_arg);
+ ioctl(-1, DM_TARGET_MSG, dm_arg);
+ printf("ioctl(-1, DM_TARGET_MSG, "
+ "{version=4.1.2, data_size=%zu, data_start=%u, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0, "
+# if VERBOSE
+ "/* misplaced struct dm_target_msg */"
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ sizeof(*dm_arg), 0xffffffff);
+
+ /* Inaccessible pointer */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data), 0);
+ dm_arg->data_size = sizeof(*dm_arg) + sizeof(struct dm_target_msg);
+ dm_arg->data_start = sizeof(*dm_arg);
+ ioctl(-1, DM_TARGET_MSG, dm_arg);
+ printf("ioctl(-1, DM_TARGET_MSG, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0, "
+# if VERBOSE
+ "%p"
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ sizeof(*dm_arg) + sizeof(struct dm_target_msg),
+ sizeof(*dm_arg)
+# if VERBOSE
+ , (char *) dm_arg + sizeof(*dm_arg)
+# endif /* VERBOSE */
+ );
+
+ /* Inaccessible string */
+ init_s(&dm_arg_msg->ioc, sizeof(*dm_arg_msg),
+ offsetof(struct dm_target_msg_test, msg));
+ dm_arg_msg->ioc.data_size = sizeof(*dm_arg_msg) + 1;
+ dm_arg_msg->msg.sector = (__u64) 0xdeadbeeffacef157ULL;
+ ioctl(-1, DM_TARGET_MSG, dm_arg_msg);
+ saved_errno = errno;
+ printf("ioctl(-1, DM_TARGET_MSG, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0, ",
+ sizeof(*dm_arg_msg) + 1,
+ offsetof(struct dm_target_msg_test, msg));
+# if VERBOSE
+ printf("{sector=%" PRI__u64 ", message=%p}",
+ (__u64) 0xdeadbeeffacef157ULL,
+ (char *) dm_arg_msg +
+ offsetof(struct dm_target_msg_test, msg.message));
+# else /* !VERBOSE */
+ printf("...");
+# endif /* VERBOSE */
+ errno = saved_errno;
+ printf("}) = -1 EBADF (%m)\n");
+
+ /* Zero-sied string */
+ init_s(&dm_arg_msg->ioc, sizeof(*dm_arg_msg),
+ offsetof(struct dm_target_msg_test, msg));
+ dm_arg_msg->msg.sector = (__u64) 0xdeadbeeffacef157ULL;
+ ioctl(-1, DM_TARGET_MSG, dm_arg_msg);
+ saved_errno = errno;
+ printf("ioctl(-1, DM_TARGET_MSG, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0, ",
+ sizeof(*dm_arg_msg), offsetof(struct dm_target_msg_test, msg));
+# if VERBOSE
+ printf("{sector=%" PRI__u64 ", message=\"\"}",
+ (__u64) 0xdeadbeeffacef157ULL);
+# else /* !VERBOSE */
+ printf("...");
+# endif /* VERBOSE */
+ errno = saved_errno;
+ printf("}) = -1 EBADF (%m)\n");
+
+
+ /* DM_DEV_SET_GEOMETRY */
+ init_s(&s.ioc, sizeof(s), offsetof(struct s, u));
+ strcpy(s.u.string, "10 20 30 40");
+ ioctl(-1, DM_DEV_SET_GEOMETRY, &s);
+ printf("ioctl(-1, DM_DEV_SET_GEOMETRY, "
+ "{version=4.1.2, data_size=%u, data_start=%u, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", flags=0, "
+# if VERBOSE
+ "string=\"10 20 30 \"..."
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ s.ioc.data_size, s.ioc.data_start);
+
+
+ /* DM_DEV_RENAME */
+ /* Inaccessible data */
+ init_s(dm_arg, sizeof(*dm_arg) - sizeof(dm_arg->data),
+ sizeof(*dm_arg) - sizeof(dm_arg->data));
+ dm_arg->data_size = sizeof(*dm_arg);
+ ioctl(-1, DM_DEV_RENAME, dm_arg);
+ printf("ioctl(-1, DM_DEV_RENAME, "
+ "{version=4.1.2, data_size=%zu, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", event_nr=0, "
+ "flags=0, "
+# if VERBOSE
+ "string=%p"
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ sizeof(*dm_arg), sizeof(*dm_arg) - sizeof(dm_arg->data)
+# if VERBOSE
+ , (char *) dm_arg + sizeof(*dm_arg) - sizeof(dm_arg->data)
+# endif /* VERBOSE */
+ );
+
+ /* Incorrect data_start data */
+ init_s(&s.ioc, sizeof(s), offsetof(struct s, u));
+ s.ioc.data_start = 0xdeadbeef;
+ ioctl(-1, DM_DEV_RENAME, &s);
+ printf("ioctl(-1, DM_DEV_RENAME, "
+ "{version=4.1.2, data_size=%u, data_start=3735928559, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", event_nr=0, "
+ "flags=0, "
+# if VERBOSE
+ "/* misplaced string */"
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ s.ioc.data_size);
+
+ /* Strange but still valid data_start */
+ init_s(&s.ioc, sizeof(s), offsetof(struct s, u));
+ /* Curiously, this is a valid structure */
+ s.ioc.data_start = offsetof(struct dm_ioctl, name) + 1;
+ ioctl(-1, DM_DEV_RENAME, &s);
+ printf("ioctl(-1, DM_DEV_RENAME, "
+ "{version=4.1.2, data_size=%u, data_start=%zu, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", event_nr=0, "
+ "flags=0, "
+# if VERBOSE
+ "string=\"nn\""
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ s.ioc.data_size,
+ offsetof(struct dm_ioctl, name) + 1);
+
+ /* Correct data */
+ init_s(&s.ioc, sizeof(s), offsetof(struct s, u));
+ strcpy(s.u.string, "new long name");
+ ioctl(-1, DM_DEV_RENAME, &s);
+ printf("ioctl(-1, DM_DEV_RENAME, "
+ "{version=4.1.2, data_size=%u, data_start=%u, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", event_nr=0, "
+ "flags=0, "
+# if VERBOSE
+ "string=\"new long \"..."
+# else /* !VERBOSE */
+ "..."
+# endif /* VERBOSE */
+ "}) = -1 EBADF (%m)\n",
+ s.ioc.data_size, s.ioc.data_start);
+
+
+ /* DM_TABLE_LOAD */
+ init_s(&s.ioc, sizeof(s), offsetof(struct s, u));
+ s.ioc.target_count = -1U;
+ ioctl(-1, DM_TABLE_LOAD, &s);
+ printf("ioctl(-1, DM_TABLE_LOAD, "
+ "{version=4.1.2, data_size=%u, data_start=%u, "
+ "dev=makedev(18, 52), name=\"nnn\", uuid=\"uuu\", "
+ "target_count=4294967295, flags=0, "
+# if VERBOSE
+ "{sector_start=0, length=0, target_type=\"\", string=\"\"}, "
+ "/* misplaced struct dm_target_spec */ "
+# endif /* VERBOSE */
+ "...}) = -1 EBADF (%m)\n",
+ s.ioc.data_size, s.ioc.data_start);
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
+
+#else /* !HAVE_LINUX_DM_IOCTL_H */
+
+SKIP_MAIN_UNDEFINED("HAVE_LINUX_DM_IOCTL_H")
+
+#endif /* HAVE_LINUX_DM_IOCTL_H */
Index: strace/tests/ioctl_dm.test
===================================================================
--- /dev/null
+++ strace/tests/ioctl_dm.test
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Check decoding of DM* ioctls.
+
+. "${srcdir=.}/init.sh"
+
+run_prog > /dev/null
+run_strace -a16 -s9 -eioctl $args > "$EXP"
+check_prog grep
+grep -v '^ioctl([012],' < "$LOG" > "$OUT"
+match_diff "$OUT" "$EXP"
+rm -f "$EXP" "$OUT"
Index: strace/xlat/dm_flags.in
===================================================================
--- /dev/null
+++ strace/xlat/dm_flags.in
@@ -0,0 +1,19 @@
+DM_READONLY_FLAG (1 << 0)
+DM_SUSPEND_FLAG (1 << 1)
+/* Defined in lvm2/libdm/ioctl/libdm-iface.c */
+DM_EXISTS_FLAG (1 << 2)
+DM_PERSISTENT_DEV_FLAG (1 << 3)
+DM_STATUS_TABLE_FLAG (1 << 4)
+DM_ACTIVE_PRESENT_FLAG (1 << 5)
+DM_INACTIVE_PRESENT_FLAG (1 << 6)
+DM_BUFFER_FULL_FLAG (1 << 8)
+DM_SKIP_BDGET_FLAG (1 << 9)
+DM_SKIP_LOCKFS_FLAG (1 << 10)
+DM_NOFLUSH_FLAG (1 << 11)
+DM_QUERY_INACTIVE_TABLE_FLAG (1 << 12)
+DM_UEVENT_GENERATED_FLAG (1 << 13)
+DM_UUID_FLAG (1 << 14)
+DM_SECURE_DATA_FLAG (1 << 15)
+DM_DATA_OUT_FLAG (1 << 16)
+DM_DEFERRED_REMOVE (1 << 17)
+DM_INTERNAL_SUSPEND_FLAG (1 << 18)
Index: strace/util.c
===================================================================
--- strace.orig/util.c
+++ strace/util.c
@@ -820,13 +820,13 @@ printstr_ex(struct tcb *tcp, long addr,
outstr = xmalloc(outstr_size);
}
- size = max_strlen;
+ size = max_strlen + 1;
if (len == -1) {
/*
* Treat as a NUL-terminated string: fetch one byte more
* because string_quote may look one byte ahead.
*/
- if (umovestr(tcp, addr, size + 1, str) < 0) {
+ if (umovestr(tcp, addr, size, str) < 0) {
printaddr(addr);
return;
}
@@ -844,11 +844,23 @@ printstr_ex(struct tcb *tcp, long addr,
style |= user_style;
+ if (style & QUOTE_0_TERMINATED) {
+ if (size) {
+ --size;
+ } else {
+ tprints((len == -1) || (len == 0) ? "\"\"" : "\"\"...");
+ return;
+ }
+ }
+ if (size > max_strlen)
+ size = max_strlen;
+
/* If string_quote didn't see NUL and (it was supposed to be ASCIZ str
* or we were requested to print more than -s NUM chars)...
*/
ellipsis = (string_quote(str, outstr, size, style) &&
- (len < 0 || (unsigned long) len > max_strlen));
+ ((style & QUOTE_0_TERMINATED) ||
+ (unsigned long) len > max_strlen));
tprints(outstr);
if (ellipsis)
Index: strace/tests/.gitignore
===================================================================
--- strace.orig/tests/.gitignore
+++ strace/tests/.gitignore
@@ -103,6 +103,8 @@ getxxid
inet-cmsg
ioctl
ioctl_block
+ioctl_dm
+ioctl_dm-v
ioctl_evdev
ioctl_evdev-v
ioctl_mtd
Index: strace/tests/ioctl_dm-v.c
===================================================================
--- /dev/null
+++ strace/tests/ioctl_dm-v.c
@@ -0,0 +1,2 @@
+#define VERBOSE 1
+#include "ioctl_dm.c"
Index: strace/tests/ioctl_dm-v.test
===================================================================
--- /dev/null
+++ strace/tests/ioctl_dm-v.test
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Check abbreviated decoding of DM* ioctls.
+
+. "${srcdir=.}/init.sh"
+
+run_prog > /dev/null
+run_strace -a16 -s9 -veioctl $args > "$EXP"
+check_prog grep
+grep -v '^ioctl([012],' < "$LOG" > "$OUT"
+match_diff "$OUT" "$EXP"
+rm -f "$EXP" "$OUT"
More information about the Strace-devel
mailing list