Format code automatically for regression tests

Makefile

@@ -157,6 +157,7 @@ docs: $(CARGO_OSDK)
 .PHONY: format
 format:
 	@./tools/format_all.sh
+	@make --no-print-directory -C regression format
 
 .PHONY: check
 check: $(CARGO_OSDK)
@@ -175,6 +176,7 @@ check: $(CARGO_OSDK)
 	@for dir in $(OSDK_CRATES); do \
 		(cd $$dir && cargo osdk clippy -- -- -D warnings) || exit 1; \
 	done
+	@make --no-print-directory -C regression check
 
 .PHONY: clean
 clean:

regression/Makefile

@@ -120,6 +120,14 @@ $(EXT2_IMAGE):
 .PHONY: build
 build: $(INITRAMFS_IMAGE) $(EXT2_IMAGE)
 
+.PHONY: format
+format:
+	@make --no-print-directory -C apps format
+
+.PHONY: check
+check:
+	@make --no-print-directory -C apps check
+
 .PHONY: clean
 clean:
 	@rm -rf $(BUILD_DIR)

regression/apps/.clang-format

@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# This file was copied from Linux kernel, or more precisely, from:
+#
+#   https://github.com/torvalds/linux/blob/e5eb28f6d1afebed4bb7d740a797d0390bd3a357/.clang-format
+#
+# We have removed the long but useless `ForEachMacros` option.
+
+# clang-format configuration file. Intended for clang-format >= 11.
+#
+# For more information, see:
+#
+#   Documentation/process/clang-format.rst
+#   https://clang.llvm.org/docs/ClangFormat.html
+#   https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+#
+---
+AccessModifierOffset: -4
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Left
+AlignOperands: true
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: None
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: false
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:
+  AfterClass: false
+  AfterControlStatement: false
+  AfterEnum: false
+  AfterFunction: true
+  AfterNamespace: true
+  AfterObjCDeclaration: false
+  AfterStruct: false
+  AfterUnion: false
+  AfterExternBlock: false
+  BeforeCatch: false
+  BeforeElse: false
+  IndentBraces: false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Custom
+BreakBeforeInheritanceComma: false
+BreakBeforeTernaryOperators: false
+BreakConstructorInitializersBeforeComma: false
+BreakConstructorInitializers: BeforeComma
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: false
+ColumnLimit: 80
+CommentPragmas: '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 8
+ContinuationIndentWidth: 8
+Cpp11BracedListStyle: false
+DerivePointerAlignment: false
+DisableFormat: false
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: false
+
+IncludeBlocks: Preserve
+IncludeCategories:
+  - Regex: '.*'
+    Priority: 1
+IncludeIsMainRegex: '(Test)?$'
+IndentCaseLabels: false
+IndentGotoLabels: false
+IndentPPDirectives: None
+IndentWidth: 8
+IndentWrappedFunctionNames: false
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd: ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBinPackProtocolList: Auto
+ObjCBlockIndentWidth: 8
+ObjCSpaceAfterProperty: true
+ObjCSpaceBeforeProtocolList: true
+
+# Taken from git's rules
+PenaltyBreakAssignment: 10
+PenaltyBreakBeforeFirstCallParameter: 30
+PenaltyBreakComment: 10
+PenaltyBreakFirstLessLess: 0
+PenaltyBreakString: 10
+PenaltyExcessCharacter: 100
+PenaltyReturnTypeOnItsOwnLine: 60
+
+PointerAlignment: Right
+ReflowComments: false
+SortIncludes: false
+SortUsingDeclarations: false
+SpaceAfterCStyleCast: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatementsExceptForEachMacros
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles: false
+SpacesInContainerLiterals: false
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard: Cpp03
+TabWidth: 8
+UseTab: Always
+...

regression/apps/Makefile

@@ -1,12 +1,17 @@
 # SPDX-License-Identifier: MPL-2.0
 
 MAKEFLAGS += --no-builtin-rules # Prevent the implicit rules from compiling ".c" or ".s" files automatically.
+
 MKFILE_PATH := $(abspath $(lastword $(MAKEFILE_LIST)))
 CUR_DIR := $(patsubst %/,%,$(dir $(MKFILE_PATH)))
+
 INITRAMFS ?= $(CUR_DIR)/../build/initramfs
 REGRESSION_BUILD_DIR ?= $(INITRAMFS)/regression
+
 TEST_APPS := signal_c pthread network hello_world hello_pie hello_c fork_c fork execve pty
 
+C_SOURCES := $(shell find . -type f \( -name "*.c" -or -name "*.h" \) )
+
 .PHONY: all
 all: $(TEST_APPS) scripts
 
@@ -14,6 +19,16 @@ all: $(TEST_APPS) scripts
 $(TEST_APPS):
 	@make --no-print-directory -C $@
 
+.PHONY: format
+format:
+	@echo "Fixing code format for regression tests..."
+	@clang-format -i $(C_SOURCES)
+
+.PHONY: check
+check:
+	@echo "Checking code format for regression tests..."
+	@clang-format --dry-run --Werror $(C_SOURCES)
+
 $(REGRESSION_BUILD_DIR):
 	@mkdir -p $@
 

regression/apps/execve/execve.c

@@ -3,7 +3,8 @@
 #include <stdio.h>
 #include <unistd.h>
 
-int main() {
+int main()
+{
 	char *argv[] = { "argv1", "argv2", NULL };
 	char *envp[] = { "home=/", "version=1.1", NULL };
 	// The hello will be put at /execve/hello in InitRamfs

regression/apps/execve/hello.c

@@ -2,7 +2,8 @@
 
 #include <stdio.h>
 
-int main(int argc, char *argv[], char *envp[]) {
+int main(int argc, char *argv[], char *envp[])
+{
 	printf("Hello world from hello.c(execved in execve.c)!\n");
 	printf("argc = %d\n", argc);
 	for (int i = 0; i < argc; i++) {

regression/apps/fork_c/fork.c

@@ -3,7 +3,8 @@
 #include <stdio.h>
 #include <unistd.h>
 
-int main() {
+int main()
+{
 	printf("before fork\n");
 	fflush(stdout);
 	if (fork() == 0) {

regression/apps/hello_c/hello.c

@@ -2,7 +2,8 @@
 
 #include <stdio.h>
 
-int main() {
+int main()
+{
 	printf("hello world from hello_c!\n");
 	return 0;
 }

regression/apps/hello_pie/hello.c

@@ -2,7 +2,8 @@
 
 #include <stdio.h>
 
-int main() {
+int main()
+{
 	printf("hello world from hello_pie!\n");
 	return 0;
 }

regression/apps/network/socketpair.c

@@ -8,7 +8,8 @@
 #define MESG1 "Hello from child"
 #define MESG2 "Hello from parent"
 
-int main() {
+int main()
+{
 	int sockets[2], child;
 	char buf[1024];
 	if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockets) < 0) {

regression/apps/network/sockoption.c

@@ -7,7 +7,8 @@
 #include <netinet/tcp.h>
 #include <unistd.h>
 
-int main() {
+int main()
+{
 	int sockfd;
 	int option;
 
@@ -21,28 +22,33 @@ int main() {
 	// Get send buffer size
 	int sendbuf;
 	socklen_t sendbuf_len = sizeof(sendbuf);
-    if (getsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, &sendbuf, &sendbuf_len) < 0 || sendbuf_len != sizeof(sendbuf)) {
+	if (getsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, &sendbuf, &sendbuf_len) <
+		    0 ||
+	    sendbuf_len != sizeof(sendbuf)) {
 		perror("Getting SO_SNDBUF option failed");
 		exit(EXIT_FAILURE);
 	}
 
 	int error;
 	socklen_t error_len = sizeof(error);
-    if (getsockopt(sockfd, SOL_SOCKET, SO_ERROR, &error, &error_len ) < 0 || error_len != sizeof(error) || error != 0) {
+	if (getsockopt(sockfd, SOL_SOCKET, SO_ERROR, &error, &error_len) < 0 ||
+	    error_len != sizeof(error) || error != 0) {
 		perror("Getting SO_SNDBUF option failed");
 		exit(EXIT_FAILURE);
 	}
 
 	// Disable Nagle algorithm
 	option = 1;
-    if (setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, &option, sizeof(option)) < 0) {
+	if (setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, &option,
+		       sizeof(option)) < 0) {
 		perror("Setting TCP_NODELAY option failed");
 		exit(EXIT_FAILURE);
 	}
 
 	// Enable reuse addr
 	option = 1;
-    if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option)) < 0) {
+	if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &option,
+		       sizeof(option)) < 0) {
 		perror("Setting SO_REUSEADDR option failed");
 		exit(EXIT_FAILURE);
 	}
@@ -50,14 +56,18 @@ int main() {
 	// Print new value
 	int nagle;
 	socklen_t nagle_len = sizeof(nagle);
-    if (getsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, &nagle, &nagle_len) < 0 || nagle != 1) {
+	if (getsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, &nagle, &nagle_len) <
+		    0 ||
+	    nagle != 1) {
 		perror("Getting TCP_NODELAY option failed.");
 		exit(EXIT_FAILURE);
 	}
 
 	int reuseaddr;
 	socklen_t reuseaddr_len = sizeof(reuseaddr);
-    if (getsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr, &reuseaddr_len) < 0 || reuseaddr != 1) {
+	if (getsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
+		       &reuseaddr_len) < 0 ||
+	    reuseaddr != 1) {
 		perror("Getting SO_REUSEADDR option failed.");
 		exit(EXIT_FAILURE);
 	}

regression/apps/network/tcp_client.c

@@ -8,7 +8,8 @@
 
 #define PORT 8080
 
-int main() {
+int main()
+{
 	int sock = 0, valread;
 	struct sockaddr_in serv_addr;
 	char *hello = "Hello from client";
@@ -30,7 +31,8 @@ int main() {
 	}
 
 	// Connect to the server
-    if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
+	if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) <
+	    0) {
 		printf("\n Connection Failed \n");
 		return -1;
 	}

regression/apps/network/tcp_server.c

@@ -8,7 +8,8 @@
 
 #define PORT 8080
 
-int main() {
+int main()
+{
 	int server_fd, new_socket, valread;
 	struct sockaddr_in address;
 	int opt = 1;
@@ -23,7 +24,8 @@ int main() {
 	}
 
 	// Set socket options
-    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
+	if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt,
+		       sizeof(opt))) {
 		perror("setsockopt failed");
 		exit(EXIT_FAILURE);
 	}
@@ -51,7 +53,8 @@ int main() {
 	}
 
 	// Accept the connection
-    if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t *)&addrlen)) < 0) {
+	if ((new_socket = accept(server_fd, (struct sockaddr *)&address,
+				 (socklen_t *)&addrlen)) < 0) {
 		perror("accept failed");
 		exit(EXIT_FAILURE);
 	}

regression/apps/network/udp_client.c

@@ -12,7 +12,8 @@
 #define SERVER_PORT 1234
 #define BUFFER_SIZE 1024
 
-int main() {
+int main()
+{
 	int sock_fd;
 	char buffer[BUFFER_SIZE];
 	struct sockaddr_in serv_addr;
@@ -34,7 +35,9 @@ int main() {
 
 	// Send massage to server
 	const char *message = "Hello world from udp client!";
-    if (sendto(sock_fd, message, strlen(message), 0, (const struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
+	if (sendto(sock_fd, message, strlen(message), 0,
+		   (const struct sockaddr *)&serv_addr,
+		   sizeof(serv_addr)) < 0) {
 		perror("sendto failed");
 		exit(EXIT_FAILURE);
 	}
@@ -43,12 +46,15 @@ int main() {
 	struct sockaddr_in sender_addr;
 	socklen_t sender_len = sizeof(sender_addr);
 	int recv_len;
-    if ((recv_len = recvfrom(sock_fd, buffer, BUFFER_SIZE, 0, (struct sockaddr *)&sender_addr, &sender_len)) < 0) {
+	if ((recv_len = recvfrom(sock_fd, buffer, BUFFER_SIZE, 0,
+				 (struct sockaddr *)&sender_addr,
+				 &sender_len)) < 0) {
 		perror("recvfrom failed");
 		exit(EXIT_FAILURE);
 	}
 	buffer[recv_len] = '\0';
-    printf("Received %s from %s:%d\n", buffer, inet_ntoa(sender_addr.sin_addr), ntohs(sender_addr.sin_port));
+	printf("Received %s from %s:%d\n", buffer,
+	       inet_ntoa(sender_addr.sin_addr), ntohs(sender_addr.sin_port));
 
 	// close socket
 	close(sock_fd);

regression/apps/network/udp_server.c

@@ -12,7 +12,8 @@
 #define SERVER_PORT 1234
 #define BUFFER_SIZE 1024
 
-int main() {
+int main()
+{
 	int sock_fd;
 	char buffer[BUFFER_SIZE];
 	struct sockaddr_in serv_addr;
@@ -33,9 +34,8 @@ int main() {
 	}
 
 	// Bind to server address
-    if (bind(sock_fd, (struct sockaddr*)&serv_addr,
-             sizeof(serv_addr))
-        < 0) {
+	if (bind(sock_fd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) <
+	    0) {
 		perror("bind failed");
 		exit(EXIT_FAILURE);
 	}
@@ -44,16 +44,21 @@ int main() {
 	struct sockaddr_in sender_addr;
 	socklen_t sender_len = sizeof(sender_addr);
 	int recv_len;
-    if ((recv_len = recvfrom(sock_fd, buffer, BUFFER_SIZE, 0, (struct sockaddr *)&sender_addr, &sender_len)) < 0) {
+	if ((recv_len = recvfrom(sock_fd, buffer, BUFFER_SIZE, 0,
+				 (struct sockaddr *)&sender_addr,
+				 &sender_len)) < 0) {
 		perror("recvfrom failed");
 		exit(EXIT_FAILURE);
 	}
 	buffer[recv_len] = '\0';
-    printf("Received %s from %s:%d\n", buffer, inet_ntoa(sender_addr.sin_addr), ntohs(sender_addr.sin_port));
+	printf("Received %s from %s:%d\n", buffer,
+	       inet_ntoa(sender_addr.sin_addr), ntohs(sender_addr.sin_port));
 
 	/// Send message to client
 	const char *message = "Hello world from udp server!";
-    if (sendto(sock_fd, message, strlen(message), 0, (const struct sockaddr *)&sender_addr, sizeof(sender_addr)) < 0) {
+	if (sendto(sock_fd, message, strlen(message), 0,
+		   (const struct sockaddr *)&sender_addr,
+		   sizeof(sender_addr)) < 0) {
 		perror("sendto failed");
 		exit(EXIT_FAILURE);
 	}

regression/apps/network/unix_client.c

@@ -11,7 +11,8 @@
 #define SOCKET_NAME "/tmp/test.sock"
 #define BUFFER_SIZE 128
 
-int main() {
+int main()
+{
 	int client_fd, len;
 	struct sockaddr_un server_addr, peer_addr;
 	char buf[BUFFER_SIZE];
@@ -26,16 +27,18 @@ int main() {
 	// Connect Server
 	memset(&server_addr, 0, sizeof(server_addr));
 	server_addr.sun_family = AF_UNIX;
-    strncpy(server_addr.sun_path, SOCKET_NAME, sizeof(server_addr.sun_path) - 1);
+	strncpy(server_addr.sun_path, SOCKET_NAME,
+		sizeof(server_addr.sun_path) - 1);
 
-    if (connect(client_fd, (struct sockaddr*)&server_addr, sizeof(server_addr)) == -1) {
+	if (connect(client_fd, (struct sockaddr *)&server_addr,
+		    sizeof(server_addr)) == -1) {
 		perror("connect");
 		exit(EXIT_FAILURE);
 	}
 
 	int addrlen = sizeof(peer_addr);
-    int rc = getpeername(client_fd, (struct sockaddr *)&peer_addr,
-                &addrlen);
+	int rc =
+		getpeername(client_fd, (struct sockaddr *)&peer_addr, &addrlen);
 	if (rc == -1) {
 		perror("getpeername");
 		exit(EXIT_FAILURE);

regression/apps/network/unix_server.c

@@ -11,7 +11,8 @@
 #define SOCKET_NAME "/tmp/test.sock"
 #define BUFFER_SIZE 128
 
-int main() {
+int main()
+{
 	int server_fd, accepted_fd, len;
 	struct sockaddr_un server_addr, client_addr;
 	char buf[BUFFER_SIZE];
@@ -26,9 +27,11 @@ int main() {
 	// 绑定Socket地址
 	memset(&server_addr, 0, sizeof(server_addr));
 	server_addr.sun_family = AF_UNIX;
-    strncpy(server_addr.sun_path, SOCKET_NAME, sizeof(server_addr.sun_path) - 1);
+	strncpy(server_addr.sun_path, SOCKET_NAME,
+		sizeof(server_addr.sun_path) - 1);
 
-    if (bind(server_fd, (struct sockaddr*)&server_addr, sizeof(server_addr)) == -1) {
+	if (bind(server_fd, (struct sockaddr *)&server_addr,
+		 sizeof(server_addr)) == -1) {
 		perror("bind");
 		exit(EXIT_FAILURE);
 	}

regression/apps/pthread/pthread_test.c

@@ -20,9 +20,12 @@
 // Helper functions
 // ============================================================================
 
-#define THROW_ERROR(fmt, ...)   do { \
-    printf("\t\tERROR:" fmt " in func %s at line %d of file %s with errno %d: %s\n", \
-    ##__VA_ARGS__, __func__, __LINE__, __FILE__, errno, strerror(errno)); \
+#define THROW_ERROR(fmt, ...)                                                   \
+	do {                                                                    \
+		printf("\t\tERROR:" fmt                                         \
+		       " in func %s at line %d of file %s with errno %d: %s\n", \
+		       ##__VA_ARGS__, __func__, __LINE__, __FILE__, errno,      \
+		       strerror(errno));                                        \
 		return -1;                                                      \
 	} while (0)
 
@@ -30,7 +33,6 @@
 // Helper macros
 // ============================================================================
 
-
 #define NTHREADS (3)
 #define STACK_SIZE (8 * 1024)
 
@@ -48,7 +50,8 @@ struct thread_arg {
 	pthread_mutex_t *mutex;
 };
 
-static void *thread_func(void *_arg) {
+static void *thread_func(void *_arg)
+{
 	struct thread_arg *arg = _arg;
 	for (long i = 0; i < arg->local_count; i++) {
 		pthread_mutex_lock(arg->mutex);
@@ -58,7 +61,8 @@ static void *thread_func(void *_arg) {
 	return NULL;
 }
 
-static int test_mutex_with_concurrent_counter(void) {
+static int test_mutex_with_concurrent_counter(void)
+{
 	/*
      * Multiple threads are to increase a global counter concurrently
      */
@@ -80,7 +84,8 @@ static int test_mutex_with_concurrent_counter(void) {
 		thread_arg->global_count = &global_count;
 		thread_arg->mutex = &mutex;
 
-        if (pthread_create(&threads[ti], NULL, thread_func, thread_arg) < 0) {
+		if (pthread_create(&threads[ti], NULL, thread_func,
+				   thread_arg) < 0) {
 			printf("ERROR: pthread_create failed (ti = %d)\n", ti);
 			return -1;
 		}
@@ -119,7 +124,8 @@ struct thread_robust_arg {
 
 int ret_err = -1;
 
-static void *thread_worker(void *_arg) {
+static void *thread_worker(void *_arg)
+{
 	struct thread_robust_arg *arg = _arg;
 	int err = pthread_mutex_lock(arg->mutex);
 	if (err == EOWNERDEAD) {
@@ -143,7 +149,8 @@ static void *thread_worker(void *_arg) {
 	return NULL;
 }
 
-static int test_robust_mutex_with_concurrent_counter(void) {
+static int test_robust_mutex_with_concurrent_counter(void)
+{
 	volatile int global_count = 0;
 	pthread_t threads[NTHREADS];
 	struct thread_robust_arg thread_args[NTHREADS];
@@ -160,7 +167,8 @@ static int test_robust_mutex_with_concurrent_counter(void) {
 		thread_arg->global_count = &global_count;
 		thread_arg->mutex = &mutex;
 
-        if (pthread_create(&threads[ti], NULL, thread_worker, thread_arg) < 0) {
+		if (pthread_create(&threads[ti], NULL, thread_worker,
+				   thread_arg) < 0) {
 			THROW_ERROR("pthread_create failed (ti = %d)", ti);
 		}
 	}
@@ -173,15 +181,18 @@ static int test_robust_mutex_with_concurrent_counter(void) {
 		// printf("Thread %d joined\n", ti);
 		// fflush(stdout);
 		if (ret_val && *ret_val != 0) {
-            THROW_ERROR("run thread failed (ti = %d) with return val: %d", ti, *ret_val);
+			THROW_ERROR(
+				"run thread failed (ti = %d) with return val: %d",
+				ti, *ret_val);
 		}
 	}
 	// printf("Thread all exited.\n");
 	// fflush(stdout);
 	// Check the result
 	if (global_count != NTHREADS) {
-        THROW_ERROR("incorrect global_count (actual = %d, expected = %d)", global_count,
-                    NTHREADS);
+		THROW_ERROR(
+			"incorrect global_count (actual = %d, expected = %d)",
+			global_count, NTHREADS);
 	}
 
 	pthread_mutex_destroy(&mutex);
@@ -202,7 +213,8 @@ struct thread_cond_arg {
 	pthread_mutex_t *mutex;
 };
 
-static void *thread_cond_wait(void *_arg) {
+static void *thread_cond_wait(void *_arg)
+{
 	struct thread_cond_arg *arg = _arg;
 	printf("Thread #%d: start to wait on condition variable.\n", arg->ti);
 	fflush(stdout);
@@ -226,7 +238,8 @@ static void *thread_cond_wait(void *_arg) {
 	return NULL;
 }
 
-static int test_mutex_with_cond_wait(void) {
+static int test_mutex_with_cond_wait(void)
+{
 	volatile unsigned int val = 0;
 	volatile int exit_thread_count = 0;
 	pthread_t threads[NTHREADS];
@@ -244,7 +257,8 @@ static int test_mutex_with_cond_wait(void) {
 		thread_arg->cond_val = &cond_val;
 		thread_arg->mutex = &mutex;
 
-        if (pthread_create(&threads[ti], NULL, thread_cond_wait, thread_arg) < 0) {
+		if (pthread_create(&threads[ti], NULL, thread_cond_wait,
+				   thread_arg) < 0) {
 			printf("ERROR: pthread_create failed (ti = %d)\n", ti);
 			return -1;
 		}
@@ -274,7 +288,8 @@ static int test_mutex_with_cond_wait(void) {
 	return 0;
 }
 
-int main() {
+int main()
+{
 	test_mutex_with_concurrent_counter();
 	test_robust_mutex_with_concurrent_counter();
 	// test_mutex_with_cond_wait();

regression/apps/pty/open_pty.c

@@ -7,7 +7,8 @@
 #include <termios.h>
 #include <pty.h>
 
-int main() {
+int main()
+{
 	int master, slave;
 	char name[256];
 	struct termios term;

regression/apps/signal_c/signal_test.c

@@ -24,20 +24,23 @@
 // Helper functions
 // ============================================================================
 
-#define THROW_ERROR(fmt, ...)   do { \
-    printf("\t\tERROR:" fmt " in func %s at line %d of file %s with errno %d: %s\n", \
-    ##__VA_ARGS__, __func__, __LINE__, __FILE__, errno, strerror(errno)); \
+#define THROW_ERROR(fmt, ...)                                                   \
+	do {                                                                    \
+		printf("\t\tERROR:" fmt                                         \
+		       " in func %s at line %d of file %s with errno %d: %s\n", \
+		       ##__VA_ARGS__, __func__, __LINE__, __FILE__, errno,      \
+		       strerror(errno));                                        \
 		return -1;                                                      \
 	} while (0)
 
-
 // ============================================================================
 // Test sigprocmask
 // ============================================================================
 
 #define sigcmpset(a, b) memcmp((a), (b), 8)
 
-int test_sigprocmask() {
+int test_sigprocmask()
+{
 	int ret;
 	sigset_t new, old;
 	sigset_t expected_old;
@@ -102,9 +105,11 @@ int test_sigprocmask() {
 
 #define MAX_RECURSION_LEVEL 3
 
-static void handle_sigio(int num, siginfo_t *info, void *context) {
+static void handle_sigio(int num, siginfo_t *info, void *context)
+{
 	static volatile int recursion_level = 0;
-    printf("Hello from SIGIO signal handler (recursion_level = %d)!\n", recursion_level);
+	printf("Hello from SIGIO signal handler (recursion_level = %d)!\n",
+	       recursion_level);
 	fflush(stdout);
 
 	recursion_level++;
@@ -114,7 +119,8 @@ static void handle_sigio(int num, siginfo_t *info, void *context) {
 	recursion_level--;
 }
 
-int test_raise() {
+int test_raise()
+{
 	struct sigaction new_action, old_action;
 	memset(&new_action, 0, sizeof(struct sigaction));
 	memset(&old_action, 0, sizeof(struct sigaction));
@@ -139,7 +145,8 @@ int test_raise() {
 // Test catching and handling hardware exception
 // ============================================================================
 
-static void handle_sigfpe(int num, siginfo_t *info, void *_context) {
+static void handle_sigfpe(int num, siginfo_t *info, void *_context)
+{
 	printf("SIGFPE Caught\n");
 	fflush(stdout);
 	assert(num == SIGFPE);
@@ -154,13 +161,15 @@ static void handle_sigfpe(int num, siginfo_t *info, void *_context) {
 // Note: this function is fragile in the sense that compiler may not always
 // emit the instruction pattern that triggers divide-by-zero as we expect.
 // TODO: rewrite this in assembly
-int div_maybe_zero(int x, int y) {
+int div_maybe_zero(int x, int y)
+{
 	return x / y;
 }
 
 #define fxsave(addr) __asm __volatile("fxsave %0" : "=m"(*(addr)))
 
-int test_handle_sigfpe() {
+int test_handle_sigfpe()
+{
 	// Set up a signal handler that handles divide-by-zero exception
 	struct sigaction new_action, old_action;
 	memset(&new_action, 0, sizeof(struct sigaction));
@@ -201,11 +210,13 @@ int test_handle_sigfpe() {
 }
 
 // TODO: rewrite this in assembly
-int read_maybe_null(int *p) {
+int read_maybe_null(int *p)
+{
 	return *p;
 }
 
-static void handle_sigsegv(int num, siginfo_t *info, void *_context) {
+static void handle_sigsegv(int num, siginfo_t *info, void *_context)
+{
 	printf("SIGSEGV Caught\n");
 	fflush(stdout);
 
@@ -221,8 +232,8 @@ static void handle_sigsegv(int num, siginfo_t *info, void *_context) {
 	return;
 }
 
-
-int test_handle_sigsegv() {
+int test_handle_sigsegv()
+{
 	// Set up a signal handler that handles divide-by-zero exception
 	struct sigaction new_action, old_action;
 	memset(&new_action, 0, sizeof(struct sigaction));
@@ -254,18 +265,21 @@ int test_handle_sigsegv() {
 // ============================================================================
 int sigchld = 0;
 
-void proc_exit() {
+void proc_exit()
+{
 	sigchld = 1;
 }
 
-int test_sigchld() {
+int test_sigchld()
+{
 	signal(SIGCHLD, proc_exit);
 	printf("Run a parent process has pid = %d\n", getpid());
 	fflush(stdout);
 	int pid = fork();
 	if (pid == 0) {
 		// child process
-        printf("create a new proces successfully (pid = %d)\n", getpid());
+		printf("create a new proces successfully (pid = %d)\n",
+		       getpid());
 		fflush(stdout);
 		exit(0);
 	} else {
@@ -285,7 +299,8 @@ int test_sigchld() {
 
 stack_t g_old_ss;
 
-static void handle_sigpipe(int num, siginfo_t *info, void *context) {
+static void handle_sigpipe(int num, siginfo_t *info, void *context)
+{
 	static volatile int recursion_level = 0;
 	printf("Hello from SIGPIPE signal handler on the alternate signal stack (recursion_level = %d)\n",
 	       recursion_level);
@@ -304,7 +319,8 @@ static void handle_sigpipe(int num, siginfo_t *info, void *context) {
 
 #define SIGSTACKSIZE (4 * 4096)
 
-int test_sigaltstack() {
+int test_sigaltstack()
+{
 	static char stack[SIGSTACKSIZE];
 	stack_t expected_ss = {
 		.ss_size = SIGSTACKSIZE,
@@ -318,9 +334,9 @@ int test_sigaltstack() {
 	if (sigaltstack(NULL, &actual_ss) < 0) {
 		THROW_ERROR("failed to call sigaltstack");
 	}
-    if (actual_ss.ss_size != expected_ss.ss_size
-            || actual_ss.ss_sp != expected_ss.ss_sp
-            || actual_ss.ss_flags != expected_ss.ss_flags) {
+	if (actual_ss.ss_size != expected_ss.ss_size ||
+	    actual_ss.ss_sp != expected_ss.ss_sp ||
+	    actual_ss.ss_flags != expected_ss.ss_flags) {
 		THROW_ERROR("failed to check the signal stack after set");
 	}
 
@@ -347,7 +363,8 @@ int test_sigaltstack() {
 	return 0;
 }
 
-int main() {
+int main()
+{
 	test_sigprocmask();
 	test_raise();
 	test_handle_sigfpe();