[PATCH] asinfo: Introduce static query tool asinfo
Edgar Kaziakhmedov
edgar.kaziakhmedov at virtuozzo.com
Tue Jul 18 08:54:33 UTC 2017
From: Edgar Kaziakhmedov <edgar.kaziakhmedov at virtuzzo.com>
The first version of asinfo tool. The asinfo tool has the
following architecture:
architecture dispatcher->system call dispatcher->filter dispatcher
As for arch. dispatcher, the asinfo has get-arch, list-arch, set-arch
%name_of_arch options, arch_dispatcher is purposed to process them.
Now, to find out the main principle of working, let’s consider the next
one case:
$ asinfo list-syscall set-filter signal
Firstly, arch_dispatcher will return the current architecture, after
that syscall_dispatcher will provide the list of system calls
(struct sc_base_info) for this architecture, finally filter_dispatcher,
working with syscallent’s database, will drop all system calls, which
are not signal-related.
For now, tool is able to show syscall typing its sequence number.
* Makefile.am (SUBDIRS): Add tools directory.
* configure.ac (AC_CONFIG_FILES): Add Makefile's.
* tools/Makefile.am: New file.
* tools/asinfo/Makefile.am: New file.
* tools/asinfo/arch_list.h: New file.
* tools/asinfo/dispatchers.h: New file. Prototype syscall_dispatcher
and arch_dispatcher.
* tools/asinfo/dispatchers.c: New file. Implement arch_dispatcher.
Import syscallent.h files.
* tools/asinfo/arch_interface.h: New file. Prototype methods to simplify
work with the list of arch_descriptor. Introduce struct arch_descriptor.
* tools/asinfo/arch_interface.c: New file. Implement them.
* tools/asinfo/request_msgs.h: New file. Introduce main type of requests.
Introduce structures for syscall_dispatcher.
* tools/asinfo/asinfo.c: New file. Implement support of all arch options and
initial support of syscall options.
* tools/asinfo/asinfo.1: New file. Empty man.
Signed-off-by: Edgar Kaziakhmedov <edgar.kaziakhmedov at virtuozzo.com>
---
Makefile.am | 2 +-
configure.ac | 2 +
tools/Makefile.am | 28 ++++++
tools/asinfo/Makefile.am | 57 ++++++++++++
tools/asinfo/arch_interface.c | 101 +++++++++++++++++++++
tools/asinfo/arch_interface.h | 75 ++++++++++++++++
tools/asinfo/arch_list.h | 4 +
tools/asinfo/asinfo.1 | 0
tools/asinfo/asinfo.c | 199 ++++++++++++++++++++++++++++++++++++++++++
tools/asinfo/dispatchers.c | 184 ++++++++++++++++++++++++++++++++++++++
tools/asinfo/dispatchers.h | 54 ++++++++++++
tools/asinfo/request_msgs.h | 80 +++++++++++++++++
12 files changed, 785 insertions(+), 1 deletion(-)
create mode 100644 tools/Makefile.am
create mode 100644 tools/asinfo/Makefile.am
create mode 100644 tools/asinfo/arch_interface.c
create mode 100644 tools/asinfo/arch_interface.h
create mode 100644 tools/asinfo/arch_list.h
create mode 100644 tools/asinfo/asinfo.1
create mode 100644 tools/asinfo/asinfo.c
create mode 100644 tools/asinfo/dispatchers.c
create mode 100644 tools/asinfo/dispatchers.h
create mode 100644 tools/asinfo/request_msgs.h
diff --git a/Makefile.am b/Makefile.am
index f08a8831..4e8ac7ab 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -35,7 +35,7 @@ endif
if HAVE_MX32_RUNTIME
TESTS_MX32 = tests-mx32
endif
-SUBDIRS = tests $(TESTS_M32) $(TESTS_MX32)
+SUBDIRS = tests $(TESTS_M32) $(TESTS_MX32) tools
bin_PROGRAMS = strace
man_MANS = strace.1
diff --git a/configure.ac b/configure.ac
index 2c84b9a7..5118cdc4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -835,6 +835,8 @@ AC_CONFIG_FILES([Makefile
tests/Makefile
tests-m32/Makefile
tests-mx32/Makefile
+ tools/Makefile
+ tools/asinfo/Makefile
strace.spec
debian/changelog])
AC_OUTPUT
diff --git a/tools/Makefile.am b/tools/Makefile.am
new file mode 100644
index 00000000..6044e9ae
--- /dev/null
+++ b/tools/Makefile.am
@@ -0,0 +1,28 @@
+# Automake input for strace tools.
+#
+# Copyright (c) 2017 Edgar A. Kaziakhmedov <edos at linux.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+# derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+SUBDIRS = asinfo
diff --git a/tools/asinfo/Makefile.am b/tools/asinfo/Makefile.am
new file mode 100644
index 00000000..e93ce181
--- /dev/null
+++ b/tools/asinfo/Makefile.am
@@ -0,0 +1,57 @@
+# Automake input for asinfo.
+#
+# Copyright (c) 2017 Edgar Kaziakhmedov <edos at linux.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+# derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+bin_PROGRAMS = asinfo
+man_MANS = asinfo.1
+
+OS = linux
+
+AUTOMAKE_OPTIONS = subdir-objects
+
+AM_CFLAGS = $(WARN_CFLAGS)
+AM_CPPFLAGS = -I$(builddir) \
+ -I$(top_builddir)/$(OS) \
+ -I$(top_srcdir)/$(OS) \
+ -I$(top_builddir) \
+ -I$(top_srcdir)
+asinfo_CPPFLAGS = $(AM_CPPFLAGS)
+asinfo_CFLAGS = $(AM_CFLAGS)
+
+asinfo_SOURCES = \
+ arch_interface.c \
+ arch_interface.h \
+ arch_list.h \
+ asinfo.c \
+ dispatchers.c \
+ dispatchers.h \
+ ../../error_prints.c \
+ ../../error_prints.h \
+ ../../macros.h \
+ requests_msgs.h \
+ ../../xmalloc.c \
+ ../../xmalloc.h \
+ #end of asinfo_SOURCES
diff --git a/tools/asinfo/arch_interface.c b/tools/asinfo/arch_interface.c
new file mode 100644
index 00000000..3c11beae
--- /dev/null
+++ b/tools/asinfo/arch_interface.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2017 Edgar A. Kaziakhmedov <edos at linux.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "arch_interface.h"
+#include "xmalloc.h"
+
+struct arch_service *arch_list_create(unsigned size)
+{
+ struct arch_service *as = (struct arch_service *) \
+ xcalloc(sizeof(*as), 1);
+ if (size) {
+ as->arch_list = (struct arch_descriptor **) \
+ xcalloc(sizeof(*(as->arch_list)), size);
+ }
+ as->capacity = size;
+ as->next_free = 0;
+ return as;
+}
+
+int arch_list_push(struct arch_service *m, struct arch_descriptor *element)
+{
+ if (m->next_free >= m->capacity) {
+ return -1;
+ }
+ m->arch_list[m->next_free] = element;
+ (m->next_free)++;
+ return 0;
+}
+
+struct arch_descriptor *arch_list_get(struct arch_service *m, unsigned index)
+{
+ if (index >= m->next_free) {
+ return NULL;
+ }
+ return m->arch_list[index];
+}
+
+unsigned arch_list_size(struct arch_service *m)
+{
+ return m->next_free;
+}
+
+void arch_list_free(struct arch_service *m)
+{
+ free(m->arch_list);
+ free(m);
+}
+
+const char* arch_list_name(struct arch_service *m, unsigned index)
+{
+ return m->arch_list[index]->arch_name;
+}
+
+int arch_list_snum(struct arch_service *m, unsigned index)
+{
+ return m->arch_list[index]->max_scn;
+}
+
+void arch_list_print(struct arch_service *m, const char *delim)
+{
+ unsigned i = 0;
+ unsigned max_len = 0;
+ for (i = 0; i < arch_list_size(m); i++) {
+ unsigned temp = strlen(m->arch_list[i]->arch_name);
+ if (temp > max_len) {
+ max_len = temp;
+ }
+ }
+ for (i = 0; i < arch_list_size(m); i++) {
+ printf("[%u] %*s %s %d\n", i + 1, max_len, arch_list_name(m, i),
+ delim, arch_list_snum(m, i));
+ }
+}
diff --git a/tools/asinfo/arch_interface.h b/tools/asinfo/arch_interface.h
new file mode 100644
index 00000000..5e9a8256
--- /dev/null
+++ b/tools/asinfo/arch_interface.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2017 Edgar A. Kaziakhmedov <edos at linux.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef ASINFO_ARCH_INTERFACE
+#define ASINFO_ARCH_INTERFACE
+
+#include "sysent.h"
+
+enum arch_types {
+ AARCH64,
+ ARM,
+ x86_64,
+ x32
+};
+
+struct arch_descriptor {
+ enum arch_types arch_num;
+ const char *arch_name;
+ int max_scn;
+ struct_sysent *list_of_syscall;
+};
+
+/* To provide push-back interface with arch_list */
+struct arch_service {
+ struct arch_descriptor **arch_list;
+ unsigned capacity;
+ unsigned next_free;
+};
+
+#define ARCH_LIST_DEFINE(name) \
+ struct arch_service *(name)
+
+/* Push-back interface is purposed to simplify interaction with
+ array of struct arch_descriptor's pointers */
+
+struct arch_service *arch_list_create(unsigned size);
+
+int arch_list_push(struct arch_service *m, struct arch_descriptor *element);
+
+struct arch_descriptor *arch_list_get(struct arch_service *m, unsigned index);
+
+unsigned arch_list_size(struct arch_service *m);
+
+void arch_list_free(struct arch_service *m);
+
+const char* arch_list_name(struct arch_service *m, unsigned index);
+
+int arch_list_snum(struct arch_service *m, unsigned index);
+
+void arch_list_print(struct arch_service *m, const char *delim);
+
+#endif /* !ASINFO_ARCH_INTERFACE */
diff --git a/tools/asinfo/arch_list.h b/tools/asinfo/arch_list.h
new file mode 100644
index 00000000..4a7accf7
--- /dev/null
+++ b/tools/asinfo/arch_list.h
@@ -0,0 +1,4 @@
+[0] = { AARCH64, "aarch64", ARRAY_SIZE(aarch64_sysent0), aarch64_sysent0 },
+[1] = { ARM, "arm", ARRAY_SIZE(arm_sysent0), arm_sysent0 },
+[2] = { x86_64, "x86_64", ARRAY_SIZE(x86_64_sysent0), x86_64_sysent0 },
+[3] = { x32, "x32", ARRAY_SIZE(x32_sysent0), x32_sysent0 },
diff --git a/tools/asinfo/asinfo.1 b/tools/asinfo/asinfo.1
new file mode 100644
index 00000000..e69de29b
diff --git a/tools/asinfo/asinfo.c b/tools/asinfo/asinfo.c
new file mode 100644
index 00000000..66a91748
--- /dev/null
+++ b/tools/asinfo/asinfo.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 2017 Edgar A. Kaziakhmedov <edos at linux.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+
+#include "arch_interface.h"
+#include "dispatchers.h"
+#include "error_prints.h"
+#include "macros.h"
+#include "request_msgs.h"
+#include "xmalloc.h"
+
+#ifndef HAVE_PROGRAM_INVOCATION_NAME
+char *program_invocation_name;
+#endif
+static const char *def_delim = ":";
+
+void ATTRIBUTE_NOINLINE
+die(void)
+{
+ exit(1);
+}
+
+/* To calculate sequence number of set bit */
+static inline unsigned
+fsbit_num(unsigned flag)
+{
+ unsigned i = 0;
+ while ((flag >>= 1) != 0) i++;
+ return i;
+}
+
+static unsigned
+option_to_request(char *option)
+{
+ const struct opt_to_req requests[] = {
+ [ 0] = { AD_REQ_SET_ARCH, "set-arch" },
+ [ 1] = { AD_REQ_GET_ARCH, "get-arch" },
+ [ 2] = { AD_REQ_LIST_ARCH, "list-arch" },
+ [ 3] = { SD_REQ_GET_NAME, "get-name" },
+ //[ 4] = { SD_REQ_GET_NUMBER, "get-num" },
+ //[ 5] = { SD_REQ_GET_NARGS, "get-nargs" },
+ //[ 6] = { SD_REQ_GET_PROTO, "get-proto" },
+ //[ 7] = { SD_REQ_GET_KERNEL, "get-kernel" },
+ //[ 8] = { SD_REQ_GET_LIST, "list-syscall" },
+ //[ 9] = { FD_SET_BASE_FILTER, "set-filter" },
+ //[10] = { FD_SET_ADV_FILTER, "set-adv-filter" }
+ };
+ unsigned i;
+
+ for (i = 0; i < ARRAY_SIZE(requests); i++) {
+ if (strcasecmp(option, requests[i].option) == 0)
+ return requests[i].req_t;
+ }
+ return 0;
+}
+
+static unsigned ATTRIBUTE_NOINLINE
+form_req(int argc, char *argv[], char *args[])
+{
+ if (!program_invocation_name || !*program_invocation_name) {
+ static char name[] = "strace";
+ program_invocation_name =
+ (argv[0] && *argv[0]) ? argv[0] : name;
+ }
+
+ int i;
+ unsigned ret_val = 0;
+ unsigned temp_ret = 0;
+ unsigned bit_pos = 0;
+
+ for (i = 1; i < argc; i++) {
+ if ((temp_ret = option_to_request(argv[i])) != 0) {
+ if ((ret_val & temp_ret) ||
+ (!(temp_ret & (SD_REQ_GET_LIST +
+ AD_REQ_LIST_ARCH +
+ AD_REQ_GET_ARCH)) &&
+ (i + 1 >= argc))) {
+ error_msg_and_help("option '%s' requires "
+ "argument", argv[i]);
+ }
+ ret_val |= temp_ret;
+ bit_pos = fsbit_num(temp_ret);
+ if (!(temp_ret & (SD_REQ_GET_LIST + AD_REQ_LIST_ARCH +
+ AD_REQ_GET_ARCH))) {
+ args[bit_pos] = argv[i + 1];
+ i += 1;
+ }
+ } else {
+ error_msg_and_help("unrecognized option '%s'", argv[i]);
+ }
+ }
+ return ret_val;
+}
+
+static int
+check_req(unsigned *request, char *args[])
+{
+ int a_flag = *request & (AD_REQ_MASK ^ AD_REQ_SET_ARCH);
+ int s_flag = *request & SD_REQ_MASK;
+ int dump = 1;
+ /* Check arch flags */
+ if (!(*request & AD_REQ_MASK)) {
+ *request |= AD_REQ_GET_ARCH;
+ dump = 0;
+ }
+ if (*request & AD_REQ_SET_ARCH) {
+ dump = 0;
+ }
+ /* Check for ambiguity */
+ if (!((*request & AD_REQ_MASK) == AD_REQ_SET_ARCH ||
+ (*request & AD_REQ_MASK) == AD_REQ_GET_ARCH ||
+ (*request & AD_REQ_MASK) == AD_REQ_LIST_ARCH)) {
+ return -1;
+ }
+ if (a_flag != 0 && s_flag != 0) {
+ return -1;
+ }
+ /* Check syscall flags, ambiguity */
+ if (!(*request & SD_REQ_MASK)) {
+ *request |= SD_REQ_GET_LIST;
+ }
+ if (!((*request & SD_REQ_MASK) == SD_REQ_GET_NAME ||
+ (*request & SD_REQ_MASK) == SD_REQ_GET_NUMBER ||
+ (*request & SD_REQ_MASK) == SD_REQ_GET_LIST)) {
+ return -1;
+ }
+ return dump;
+}
+
+int
+main(int argc, char *argv[])
+{
+ char **input_args = (char**)xcalloc(sizeof(char*),
+ sizeof(unsigned) * CHAR_BIT);
+ unsigned requests;
+ int dump;
+
+ if ((requests = form_req(argc, argv, input_args)) == 0)
+ error_msg_and_help("must have OPTIONS");
+ if ((dump = check_req(&requests, input_args)) == -1)
+ error_msg_and_help("ambiguous options");
+
+ /* arch_dispatcher work */
+ ARCH_LIST_DEFINE(arch_list);
+ arch_list = arch_dispatcher(requests,
+ input_args[fsbit_num(AD_REQ_SET_ARCH)]);
+ if (dump) {
+ arch_list_print(arch_list, def_delim);
+ goto done;
+ }
+ if (arch_list_size(arch_list) == 0) {
+ error_msg_and_help("unrecognized architecture '%s'",
+ input_args[fsbit_num(AD_REQ_SET_ARCH)]);
+ }
+ /* syscall_dispatcher work */
+ SYSCALL_LIST_DEFINE(syscall_list);
+ syscall_list = syscall_dispatcher(arch_list, requests,
+ input_args[fsbit_num(requests & SD_REQ_MASK)]);
+ if (syscall_list[0].sys_name != NULL) {
+ printf("%s\n", syscall_list[0].sys_name);
+ } else {
+ error_msg_and_help("unrecognized syscall number '%s'",
+ input_args[fsbit_num(requests & SD_REQ_MASK)]);
+ }
+done:
+ arch_list_free(arch_list);
+ free(input_args);
+ return 0;
+}
diff --git a/tools/asinfo/dispatchers.c b/tools/asinfo/dispatchers.c
new file mode 100644
index 00000000..95ca4923
--- /dev/null
+++ b/tools/asinfo/dispatchers.c
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2017 Edgar A. Kaziakhmedov <edos at linux.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+#include "arch_interface.h"
+#include "dispatchers.h"
+#include "macros.h"
+#include "request_msgs.h"
+#include "sysent.h"
+#include "xmalloc.h"
+
+/* Define these shorthand notations to simplify the syscallent files. */
+/* These flags could be useful to print group of syscalls */
+#define TD TRACE_DESC
+#define TF TRACE_FILE
+#define TI TRACE_IPC
+#define TN TRACE_NETWORK
+#define TP TRACE_PROCESS
+#define TS TRACE_SIGNAL
+#define TM TRACE_MEMORY
+#define TST TRACE_STAT
+#define TLST TRACE_LSTAT
+#define TFST TRACE_FSTAT
+#define TSTA TRACE_STAT_LIKE
+#define TSF TRACE_STATFS
+#define TFSF TRACE_FSTATFS
+#define TSFA TRACE_STATFS_LIKE
+#define NF SYSCALL_NEVER_FAILS
+#define MA MAX_ARGS
+#define SI STACKTRACE_INVALIDATE_CACHE
+#define SE STACKTRACE_CAPTURE_ON_ENTER
+#define CST COMPAT_SYSCALL_TYPES
+
+/*
+ * For the current functionality there is no need
+ * to use sen and (*sys_func)() fields in sysent struct
+ */
+#define SEN(syscall_name) 0, NULL
+
+struct_sysent aarch64_sysent0[] = {
+#include "aarch64/syscallent.h"
+};
+
+struct_sysent arm_sysent0[] = {
+#include "arm/syscallent.h"
+};
+
+struct_sysent x32_sysent0[] = {
+#include "x32/syscallent.h"
+};
+
+struct_sysent x86_64_sysent0[] = {
+#include "x86_64/syscallent.h"
+};
+
+#undef SEN
+#undef TD
+#undef TF
+#undef TI
+#undef TN
+#undef TP
+#undef TS
+#undef TM
+#undef TST
+#undef TLST
+#undef TFST
+#undef TSTA
+#undef TSF
+#undef TFSF
+#undef TSFA
+#undef NF
+#undef MA
+#undef SI
+#undef SE
+#undef CST
+
+struct arch_descriptor architectures[] = {
+#include "arch_list.h"
+};
+
+struct sc_base_info *
+syscall_dispatcher(struct arch_service *arch, int request_type,
+ const char *data)
+{
+ SYSCALL_LIST_DEFINE(syscall_list);
+
+ if (request_type & SD_REQ_GET_NAME) {
+ long int nsys;
+ char *endptr;
+ nsys = strtol(data, &endptr, 10);
+ if (*endptr != '\0' || nsys < 0 ||
+ nsys >= arch->arch_list[0]->max_scn) {
+ goto fail;
+ }
+ SYSCALL_LIST_ALLOC(syscall_list, 1);
+ syscall_list[0].sys_name =
+ arch->arch_list[0]->list_of_syscall[nsys].sys_name;
+ goto done;
+ }
+
+fail:
+ SYSCALL_LIST_ALLOC(syscall_list, 0);
+done:
+ return syscall_list;
+}
+
+struct arch_service *
+arch_dispatcher(unsigned request_type, const char* arch)
+{
+ struct utsname info_uname;
+ const char *loc_arch;
+ unsigned i;
+ ARCH_LIST_DEFINE(arch_list);
+ if ((!arch) && (request_type & AD_REQ_SET_ARCH)) {
+ goto fail;
+ }
+
+ if (request_type & AD_REQ_GET_ARCH) {
+ uname(&info_uname);
+ for (i = 0; i < ARRAY_SIZE(architectures); i++) {
+ loc_arch = architectures[i].arch_name;
+ if (strcasestr(info_uname.machine, loc_arch) != NULL) {
+ arch_list = arch_list_create(1);
+ arch_list_push(arch_list, &(architectures[i]));
+ goto done;
+ }
+ }
+ }
+
+ if (request_type & AD_REQ_SET_ARCH) {
+ for (i = 0; i < ARRAY_SIZE(architectures); i++) {
+ loc_arch = architectures[i].arch_name;
+ if (strcasestr(arch, loc_arch) != NULL) {
+ arch_list = arch_list_create(1);
+ arch_list_push(arch_list, &(architectures[i]));
+ goto done;
+ }
+ }
+ }
+
+ if (request_type & AD_REQ_LIST_ARCH) {
+ arch_list = arch_list_create(ARRAY_SIZE(architectures));
+ for (i = 0; i < ARRAY_SIZE(architectures); i++) {
+ arch_list_push(arch_list, &(architectures[i]));
+ }
+ goto done;
+ }
+
+fail:
+ arch_list = arch_list_create(0);
+done:
+ return arch_list;
+}
diff --git a/tools/asinfo/dispatchers.h b/tools/asinfo/dispatchers.h
new file mode 100644
index 00000000..a60f1595
--- /dev/null
+++ b/tools/asinfo/dispatchers.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2017 Edgar A. Kaziakhmedov <edos at linux.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef STRACE_ASINFO_COM_SCALLENT
+#define STRACE_ASINFO_COM_SCALLENT
+
+#include "arch_interface.h"
+#include "request_msgs.h"
+#include "sysent.h"
+
+#define SYSCALL_LIST_DEFINE(name) \
+ struct sc_base_info *(name)
+
+#define SYSCALL_LIST_ALLOC(name, size) \
+ (name) = (struct sc_base_info*) xcalloc(sizeof(*(name)), (size + 1))
+
+/* The main interaction with low-level structures, such as for now,
+ * struct_sysent, is happening here, the remaining processing should
+ * be done on the other levels.
+ */
+struct sc_base_info *syscall_dispatcher(struct arch_service *arch,
+ int request_type,
+ const char *arg);
+
+/* The function is purposed to interact with uname syscall
+ */
+struct arch_service *arch_dispatcher(unsigned request_type,
+ const char* arch);
+
+#endif /* !STRACE_ASINFO_COM_SCALLENT */
diff --git a/tools/asinfo/request_msgs.h b/tools/asinfo/request_msgs.h
new file mode 100644
index 00000000..575e2735
--- /dev/null
+++ b/tools/asinfo/request_msgs.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2017 Edgar A. Kaziakhmedov <edos at linux.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef STRACE_ASINFO_REQ_MSGS
+#define STRACE_ASINFO_REQ_MSGS
+
+/* Request types for syscall_dispatcher,
+ * arch_dispatcher, and filter_dispatcher,
+ * which, in turn, could be combined
+ */
+enum request_types {
+ SD_REQ_GET_NAME = 0x1<<0,
+ SD_REQ_GET_NUMBER = 0x1<<1,
+ SD_REQ_GET_NARGS = 0x1<<2,
+ SD_REQ_GET_PROTO = 0x1<<3,
+ SD_REQ_GET_KERNEL = 0x1<<4,
+ SD_REQ_GET_LIST = 0x1<<5,
+ /* Reserved */
+ AD_REQ_SET_ARCH = 0x1<<16,
+ AD_REQ_GET_ARCH = 0x1<<17,
+ AD_REQ_LIST_ARCH = 0x1<<18,
+ /* Reserved */
+ FD_SET_BASE_FILTER = 0x1<<24,
+ FD_SET_ADV_FILTER = 0x1<<25
+};
+
+#define SD_REQ_MASK (0x0000FFFFU)
+#define AD_REQ_MASK (0x00FF0000U)
+#define FD_REQ_MASK (0xFF000000U)
+
+/* To convert options to req_types */
+struct opt_to_req {
+ enum request_types req_t;
+ const char *option;
+};
+
+/* SD_REQ_GET_NAME, SD_REQ_GET_NUMBER */
+struct sc_base_info {
+ int sys_number;
+ const char *sys_name;
+ int sys_flags;
+};
+
+/* SD_REQ_GET_NARGS */
+struct sc_nargs {
+ struct sc_base_info sys_bi;
+ int nargs;
+};
+
+/* FD_SET_BASE_FILTER */
+struct sc_filter {
+ struct sc_base_info sys_bi;
+ int filter_options;
+};
+
+#endif /* !STRACE_ASINFO_REQ_MSGS */
--
2.11.0
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