[PATCH 08/12][user-cr] Create common.h

[Sukadev Bhattiprolu <sukadev-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>]

From: Sukadev Bhattiprolu <sukadev-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Date: Thu, 4 Mar 2010 21:30:50 -0800
Subject: [PATCH 08/12][user-cr] Create common.h

Code in common.h can be shared by checkpoint.c and restart.c for now.

Signed-off-by: Sukadev Bhattiprolu <sukadev-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---
 Makefile     |    4 ++
 checkpoint.c |   31 +---------------
 common.h     |  112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 restart.c    |  110 +--------------------------------------------------------
 4 files changed, 119 insertions(+), 138 deletions(-)
 create mode 100644 common.h

diff --git a/Makefile b/Makefile
index b312358..acebdd5 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,8 @@ CKPT_HEADERS = include/linux/checkpoint.h \
 		include/linux/checkpoint_hdr.h \
 		include/asm/checkpoint_hdr.h
 
+CR_OBJS = checkpoint.o restart.o
+
 # detect architecture (for eclone)
 SUBARCH = $(patsubst i%86,x86_32,$(shell uname -m))
 
@@ -41,6 +43,8 @@ $(LIB_ECLONE):
 # restart needs to be thread-safe
 restart: CFLAGS += -D__REENTRANT -pthread
 
+$(CR_OBJS): common.h
+
 # eclone() is architecture specific
 ifneq ($(SUBARCH),)
 $(ECLONE_PROGS): $(LIB_ECLONE) 
diff --git a/checkpoint.c b/checkpoint.c
index ace17e2..6e91149 100644
--- a/checkpoint.c
+++ b/checkpoint.c
@@ -21,6 +21,8 @@
 
 #include <linux/checkpoint.h>
 
+#include "common.h"
+
 static char usage_str[] =
 "usage: ckpt [opts] PID\n"
 "  'checkpoint' takes a checkpoint of the task indicated by PID, and all\n"
@@ -55,35 +57,6 @@ inline static int checkpoint(pid_t pid, int fd, unsigned long flags, int logfd)
 	return syscall(__NR_checkpoint, pid, fd, flags, logfd);
 }
 
-#define BUFSIZE  (4 * 4096)
-static inline void ckpt_msg(int fd, char *format, ...)
-{
-        va_list ap;
-        char *bufp;
-        if (fd < 0)
-                return;
-
-        va_start(ap, format);
-
-        bufp = malloc(BUFSIZE);
-        if(bufp) {
-                vsnprintf(bufp, BUFSIZE, format, ap);
-                write(fd, bufp, strlen(bufp));
-        }
-        free(bufp);
-
-        va_end(ap);
-}
-
-#define ckpt_err(...)  \
-	ckpt_msg(global_uerrfd, __VA_ARGS__)
-
-#define ckpt_perror(s)                                                  \
-        do {                                                            \
-                ckpt_msg(global_uerrfd, s);                             \
-                ckpt_msg(global_uerrfd, ": %s\n", strerror(errno));     \
-        } while (0)
-
 static void usage(char *str)
 {
 	ckpt_err("%s", str);
diff --git a/common.h b/common.h
new file mode 100644
index 0000000..99b224d
--- /dev/null
+++ b/common.h
@@ -0,0 +1,112 @@
+#include <stdio.h>
+#include <signal.h>
+
+#define BUFSIZE  (4 * 4096)
+
+static inline void ckpt_msg(int fd, char *format, ...)
+{
+	va_list ap;
+	char *bufp;
+	if (fd < 0)
+		return;
+
+	va_start(ap, format);
+
+	bufp = malloc(BUFSIZE);
+	if(bufp) {
+		vsnprintf(bufp, BUFSIZE, format, ap);
+		write(fd, bufp, strlen(bufp));
+	}
+	free(bufp);
+
+	va_end(ap);
+}
+
+#define ckpt_perror(s) 							\
+	do {								\
+		ckpt_msg(global_uerrfd, s);				\
+		ckpt_msg(global_uerrfd, ": %s\n", strerror(errno));	\
+	} while (0)
+
+#ifdef CHECKPOINT_DEBUG
+#define ckpt_dbg(_format, _args...)					\
+	do {								\
+		if (global_debug)					\
+			ckpt_msg(global_uerrfd, "<%d>" _format, 	\
+					_gettid(), ##_args); 		\
+	} while (0)
+#define ckpt_dbg_cont(_format, _args...)				\
+	do {								\
+		if (global_debug)					\
+			ckpt_msg(global_uerrfd, _format, ##_args);	\
+	} while (0)
+#else
+#define ckpt_dbg(_format, _args...)  \
+	do { } while (0)
+#define ckpt_dbg_cont(_format, _args...)  \
+	do { } while (0)
+#endif
+
+#define ckpt_err(...)  \
+	ckpt_msg(global_uerrfd, __VA_ARGS__)
+
+#define ckpt_verbose(...)					\
+	do {							\
+		if (global_verbose)				\
+			ckpt_msg(global_ulogfd, __VA_ARGS__);	\
+	} while(0)
+
+struct signal_array {
+	int signum;
+	char *sigstr;
+};
+
+#define SIGNAL_ENTRY(signal)  { SIG ## signal, #signal }
+
+#define INIT_SIGNAL_ARRAY { 	\
+	{ 0, "NONE" },		\
+	SIGNAL_ENTRY(ALRM),	\
+	SIGNAL_ENTRY(HUP),	\
+	SIGNAL_ENTRY(INT),	\
+	SIGNAL_ENTRY(KILL),	\
+	SIGNAL_ENTRY(PIPE),	\
+	SIGNAL_ENTRY(POLL),	\
+	SIGNAL_ENTRY(PROF),	\
+	SIGNAL_ENTRY(TERM),	\
+	SIGNAL_ENTRY(USR1),	\
+	SIGNAL_ENTRY(USR2),	\
+	SIGNAL_ENTRY(VTALRM),	\
+	SIGNAL_ENTRY(STKFLT),	\
+	SIGNAL_ENTRY(PWR),	\
+	SIGNAL_ENTRY(WINCH),	\
+	SIGNAL_ENTRY(CHLD),	\
+	SIGNAL_ENTRY(URG),	\
+	SIGNAL_ENTRY(TTIN),	\
+	SIGNAL_ENTRY(TTOU),	\
+	SIGNAL_ENTRY(STOP),	\
+	SIGNAL_ENTRY(CONT),	\
+	SIGNAL_ENTRY(ABRT),	\
+	SIGNAL_ENTRY(FPE),	\
+	SIGNAL_ENTRY(ILL),	\
+	SIGNAL_ENTRY(QUIT),	\
+	SIGNAL_ENTRY(SEGV),	\
+	SIGNAL_ENTRY(TRAP),	\
+	SIGNAL_ENTRY(SYS),	\
+	SIGNAL_ENTRY(BUS),	\
+	SIGNAL_ENTRY(XCPU),	\
+	SIGNAL_ENTRY(XFSZ),	\
+	{ -1, "LAST" },		\
+}
+
+#define CKPT_COND_PIDZERO  0x1
+#define CKPT_COND_MNTPROC  0x2
+#define CKPT_COND_MNTPTY   0x4
+
+#define CKPT_COND_NONE     0
+#define CKPT_COND_ANY      ULONG_MAX
+
+/* default for skip/warn/fail */
+#define CKPT_COND_WARN     (CKPT_COND_MNTPROC | \
+			    CKPT_COND_MNTPTY)
+#define CKPT_COND_FAIL     (CKPT_COND_NONE)
+
diff --git a/restart.c b/restart.c
index b37bf81..f65eafb 100644
--- a/restart.c
+++ b/restart.c
@@ -40,6 +40,7 @@
 #include "eclone.h"
 #include "genstack.h"
 #include "compat.h"
+#include "common.h"
 
 static char usage_str[] =
 "usage: restart [opts]\n"
@@ -102,103 +103,6 @@ static char usage_str[] =
  * of the checkpoint image stream.
  */
 
-#define BUFSIZE  (4 * 4096)
-
-static inline void ckpt_msg(int fd, char *format, ...)
-{
-	va_list ap;
-	char *bufp;
-	if (fd < 0)
-		return;
-
-	va_start(ap, format);
-
-	bufp = malloc(BUFSIZE);
-	if(bufp) {
-		vsnprintf(bufp, BUFSIZE, format, ap);
-		write(fd, bufp, strlen(bufp));
-	}
-	free(bufp);
-
-	va_end(ap);
-}
-
-#define ckpt_perror(s) 							\
-	do {								\
-		ckpt_msg(global_uerrfd, s);				\
-		ckpt_msg(global_uerrfd, ": %s\n", strerror(errno));	\
-	} while (0)
-
-#ifdef CHECKPOINT_DEBUG
-#define ckpt_dbg(_format, _args...)					\
-	do {								\
-		if (global_debug)					\
-			ckpt_msg(global_uerrfd, "<%d>" _format, 	\
-					_gettid(), ##_args); 		\
-	} while (0)
-#define ckpt_dbg_cont(_format, _args...)				\
-	do {								\
-		if (global_debug)					\
-			ckpt_msg(global_uerrfd, _format, ##_args);	\
-	} while (0)
-#else
-#define ckpt_dbg(_format, _args...)  \
-	do { } while (0)
-#define ckpt_dbg_cont(_format, _args...)  \
-	do { } while (0)
-#endif
-
-#define ckpt_err(...)  \
-	ckpt_msg(global_uerrfd, __VA_ARGS__)
-
-#define ckpt_verbose(...)					\
-	do {							\
-		if (global_verbose)				\
-			ckpt_msg(global_ulogfd, __VA_ARGS__);	\
-	} while(0)
-
-struct signal_array {
-	int signum;
-	char *sigstr;
-};
-
-#define SIGNAL_ENTRY(signal)  { SIG ## signal, #signal }
-
-#define INIT_SIGNAL_ARRAY { 	\
-	{ 0, "NONE" },		\
-	SIGNAL_ENTRY(ALRM),	\
-	SIGNAL_ENTRY(HUP),	\
-	SIGNAL_ENTRY(INT),	\
-	SIGNAL_ENTRY(KILL),	\
-	SIGNAL_ENTRY(PIPE),	\
-	SIGNAL_ENTRY(POLL),	\
-	SIGNAL_ENTRY(PROF),	\
-	SIGNAL_ENTRY(TERM),	\
-	SIGNAL_ENTRY(USR1),	\
-	SIGNAL_ENTRY(USR2),	\
-	SIGNAL_ENTRY(VTALRM),	\
-	SIGNAL_ENTRY(STKFLT),	\
-	SIGNAL_ENTRY(PWR),	\
-	SIGNAL_ENTRY(WINCH),	\
-	SIGNAL_ENTRY(CHLD),	\
-	SIGNAL_ENTRY(URG),	\
-	SIGNAL_ENTRY(TTIN),	\
-	SIGNAL_ENTRY(TTOU),	\
-	SIGNAL_ENTRY(STOP),	\
-	SIGNAL_ENTRY(CONT),	\
-	SIGNAL_ENTRY(ABRT),	\
-	SIGNAL_ENTRY(FPE),	\
-	SIGNAL_ENTRY(ILL),	\
-	SIGNAL_ENTRY(QUIT),	\
-	SIGNAL_ENTRY(SEGV),	\
-	SIGNAL_ENTRY(TRAP),	\
-	SIGNAL_ENTRY(SYS),	\
-	SIGNAL_ENTRY(BUS),	\
-	SIGNAL_ENTRY(XCPU),	\
-	SIGNAL_ENTRY(XFSZ),	\
-	{ -1, "LAST" },		\
-}
-
 static struct signal_array signal_array[] = INIT_SIGNAL_ARRAY;
 
 static char *sig2str(int sig)
@@ -399,18 +303,6 @@ struct app_restart_args {
 	int keep_lsm;
 };
 
-#define CKPT_COND_PIDZERO  0x1
-#define CKPT_COND_MNTPROC  0x2
-#define CKPT_COND_MNTPTY   0x4
-
-#define CKPT_COND_NONE     0
-#define CKPT_COND_ANY      ULONG_MAX
-
-/* default for skip/warn/fail */
-#define CKPT_COND_WARN     (CKPT_COND_MNTPROC | \
-			    CKPT_COND_MNTPTY)
-#define CKPT_COND_FAIL     (CKPT_COND_NONE)
-
 static void usage(char *str)
 {
 	ckpt_err("%s", str);
-- 
1.6.0.4