porting: Port for FreeBSD rebased from Mike Ma's efforts

- Provides a working Gluster Management Daemon, CLI
- Provides a working GlusterFS server, GlusterNFS server
- Provides a working GlusterFS client
- execinfo port from FreeBSD is moved into ./contrib/libexecinfo
  for ease of portability on NetBSD. (FreeBSD 10 and OSX provide
  execinfo natively)
- More portability cleanups for Darwin, FreeBSD and NetBSD
- Provides a new rc script for FreeBSD

Change-Id: I8dff336f97479ca5a7f9b8c6b730051c0f8ac46f
BUG: 1111774
Original-Author: Mike Ma <mikemandarine@gmail.com>
Signed-off-by: Harshavardhana <harsha@harshavardhana.net>
Reviewed-on: http://review.gluster.org/8141
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>

7 files changed, 40 insertions, 93 deletions

diff --git a/libglusterfs/src/Makefile.am b/libglusterfs/src/Makefile.am
index ccac1a1e825..25ee4c27a8b 100644
--- a/libglusterfs/src/Makefile.am
+++ b/libglusterfs/src/Makefile.am
@@ -1,10 +1,10 @@
-libglusterfs_la_CFLAGS = -Wall $(GF_CFLAGS) \
-	$(GF_DARWIN_LIBGLUSTERFS_CFLAGS)    \
-        -DDATADIR=\"$(localstatedir)\"
+libglusterfs_la_CFLAGS = -Wall $(GF_CFLAGS) $(GF_DARWIN_LIBGLUSTERFS_CFLAGS) \
+	-DDATADIR=\"$(localstatedir)\"
 
 libglusterfs_la_CPPFLAGS = $(GF_CPPFLAGS) -D__USE_FILE_OFFSET64 \
 	-DXLATORDIR=\"$(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator\" \
-	-I$(top_srcdir)/rpc/rpc-lib/src/ -I$(CONTRIBDIR)/rbtree
+	-I$(top_srcdir)/rpc/rpc-lib/src/ -I$(CONTRIBDIR)/rbtree \
+	-I$(CONTRIBDIR)/libexecinfo
 
 libglusterfs_la_LIBADD = @LEXLIB@
 libglusterfs_la_LDFLAGS = -version-info $(LIBGLUSTERFS_LT_VERSION)
@@ -27,7 +27,7 @@ libglusterfs_la_SOURCES = dict.c xlator.c logging.c \
 	event-history.c gidcache.c ctx.c client_t.c event-poll.c event-epoll.c \
 	$(CONTRIBDIR)/libgen/basename_r.c $(CONTRIBDIR)/libgen/dirname_r.c \
 	$(CONTRIBDIR)/stdlib/gf_mkostemp.c strfd.c \
-	$(CONTRIBDIR)/mount/mntent.c
+	$(CONTRIBDIR)/mount/mntent.c $(CONTRIBDIR)/libexecinfo/execinfo.c
 
 nodist_libglusterfs_la_SOURCES = y.tab.c graph.lex.c
 
@@ -44,7 +44,8 @@ noinst_HEADERS = common-utils.h defaults.h dict.h glusterfs.h hashfn.h timespec.
 	run.h options.h lkowner.h fd-lk.h circ-buff.h event-history.h \
 	gidcache.h client_t.h glusterfs-acl.h glfs-message-id.h \
 	template-component-messages.h strfd.h \
-	$(CONTRIBDIR)/mount/mntent_compat.h lvm-defaults.h
+	$(CONTRIBDIR)/mount/mntent_compat.h lvm-defaults.h \
+	$(CONTRIBDIR)/libexecinfo/execinfo_compat.h
 
 EXTRA_DIST = graph.l graph.y
 
diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index 6ba5223da0b..124b312f4a1 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -15,6 +15,8 @@
 
 #ifdef HAVE_BACKTRACE
 #include <execinfo.h>
+#else
+#include "execinfo_compat.h"
 #endif
 
 #include <stdio.h>
@@ -33,7 +35,7 @@
 #include <signal.h>
 #include <assert.h>
 
-#if defined GF_BSD_HOST_OS || defined GF_DARWIN_HOST_OS
+#if defined(GF_BSD_HOST_OS) || defined(GF_DARWIN_HOST_OS)
 #include <sys/sysctl.h>
 #endif
 
@@ -531,11 +533,9 @@ gf_print_trace (int32_t signum, glusterfs_ctx_t *ctx)
         }
 
         gf_dump_config_flags ();
-#if HAVE_BACKTRACE
         gf_msg_backtrace_nomem (GF_LOG_ALERT, 200);
         sprintf (msg, "---------");
         gf_msg_plain_nomem (GF_LOG_ALERT, msg);
-#endif /* HAVE_BACKTRACE */
 
         /* Send a signal to terminate the process */
         signal (signum, SIG_DFL);
@@ -3062,82 +3062,29 @@ gf_set_log_ident (cmd_args_t *cmd_args)
 
 int
 gf_thread_create (pthread_t *thread, const pthread_attr_t *attr,
-		  void *(*start_routine)(void *), void *arg)
-{
-	sigset_t set, old;
-	int ret;
-
-	sigemptyset (&set);
-
-	sigfillset (&set);
-	sigdelset (&set, SIGSEGV);
-	sigdelset (&set, SIGBUS);
-	sigdelset (&set, SIGILL);
-	sigdelset (&set, SIGSYS);
-	sigdelset (&set, SIGFPE);
-	sigdelset (&set, SIGABRT);
-
-	pthread_sigmask (SIG_BLOCK, &set, &old);
-
-	ret = pthread_create (thread, attr, start_routine, arg);
-
-	pthread_sigmask (SIG_SETMASK, &old, NULL);
-
-	return ret;
-}
-
-#ifdef __NetBSD__
-#ifdef __MACHINE_STACK_GROWS_UP
-#define BELOW >
-#else
-#define BELOW <
-#endif
-
-struct frameinfo {
-	struct frameinfo *next;
-	void *return_address;
-};
-
-size_t
-backtrace(void **trace, size_t len)
+                  void *(*start_routine)(void *), void *arg)
 {
-	const struct frameinfo *frame = __builtin_frame_address(0);
-	void *stack = &stack;
-	size_t i;
+        sigset_t set, old;
+        int ret;
 
-	for (i = 0; i < len; i++) {
-		if ((void *)frame BELOW stack)
-			return i;
-		trace[i] = frame->return_address;
-		frame = frame->next;
-	}
+        sigemptyset (&set);
 
-	return len;
-}
+        sigfillset (&set);
+        sigdelset (&set, SIGSEGV);
+        sigdelset (&set, SIGBUS);
+        sigdelset (&set, SIGILL);
+        sigdelset (&set, SIGSYS);
+        sigdelset (&set, SIGFPE);
+        sigdelset (&set, SIGABRT);
 
-char **
-backtrace_symbols(void *const *trace, size_t len)
-{
-	static const size_t slen = sizeof("0x123456789abcdef");
-	char **ptr = calloc(len, sizeof(*ptr) + slen);
-	size_t i;
+        pthread_sigmask (SIG_BLOCK, &set, &old);
 
-	if (ptr == NULL)
-		return NULL;
+        ret = pthread_create (thread, attr, start_routine, arg);
 
-	char *str = (void *)(ptr + len);
-	size_t cur = 0, left = len * slen;
+        pthread_sigmask (SIG_SETMASK, &old, NULL);
 
-	for (i = 0; i < len; i++) {
-		ptr[i] = str + cur;
-		cur += snprintf(str + cur, left - cur, "%p", trace[i]) + 1;
-		assert(cur < left);
-	}
-
-	return ptr;
+        return ret;
 }
-#undef BELOW
-#endif /* __NetBSD__ */
 
 int
 gf_skip_header_section (int fd, int header_len)
diff --git a/libglusterfs/src/common-utils.h b/libglusterfs/src/common-utils.h
index 86848df452d..b4372f10bbc 100644
--- a/libglusterfs/src/common-utils.h
+++ b/libglusterfs/src/common-utils.h
@@ -621,12 +621,7 @@ gf_boolean_t gf_is_same_address (char *host1, char *host2);
 void md5_wrapper(const unsigned char *data, size_t len, char *md5);
 
 int gf_thread_create (pthread_t *thread, const pthread_attr_t *attr,
-		      void *(*start_routine)(void *), void *arg);
-#ifdef __NetBSD__
-size_t backtrace(void **, size_t);
-char **backtrace_symbols(void *const *, size_t);
-#endif
-
+                      void *(*start_routine)(void *), void *arg);
 gf_boolean_t
 gf_is_service_running (char *pidfile, int *pid);
 int
diff --git a/libglusterfs/src/compat.h b/libglusterfs/src/compat.h
index 81408dbd0ae..5920fce992b 100644
--- a/libglusterfs/src/compat.h
+++ b/libglusterfs/src/compat.h
@@ -125,6 +125,11 @@ enum {
 #define sighandler_t sig_t
 #endif
 
+#ifdef __FreeBSD__
+#undef ino_t
+#define ino_t uint64_t
+#endif /* __FreeBSD__ */
+
 #ifndef ino64_t
 #define ino64_t ino_t
 #endif
@@ -153,6 +158,8 @@ enum {
 #define F_GETLK64       F_GETLK
 #define F_SETLK64       F_SETLK
 #define F_SETLKW64      F_SETLKW
+#define FALLOC_FL_KEEP_SIZE     0x01 /* default is extend size */
+#define FALLOC_FL_PUNCH_HOLE    0x02 /* de-allocates range */
 
 #endif /* GF_BSD_HOST_OS */
 
diff --git a/libglusterfs/src/logging.c b/libglusterfs/src/logging.c
index b3626538b96..e9734bcfca1 100644
--- a/libglusterfs/src/logging.c
+++ b/libglusterfs/src/logging.c
@@ -25,6 +25,8 @@
 
 #ifdef HAVE_BACKTRACE
 #include <execinfo.h>
+#else
+#include "execinfo_compat.h"
 #endif
 
 #include <sys/stat.h>
@@ -814,8 +816,6 @@ _gf_log_callingfn (const char *domain, const char *file, const char *function,
         else
                 basename = file;
 
-#if HAVE_BACKTRACE
-        /* Print 'calling function' */
         do {
                 void *array[5];
                 char **callingfn = NULL;
@@ -838,7 +838,6 @@ _gf_log_callingfn (const char *domain, const char *file, const char *function,
 
                 free (callingfn);
         } while (0);
-#endif /* HAVE_BACKTRACE */
 
         if (ctx->log.log_control_file_found)
         {
@@ -1070,7 +1069,6 @@ out:
         return ret;
 }
 
-#if HAVE_BACKTRACE
 void
 _gf_msg_backtrace_nomem (gf_loglevel_t level, int stacksize)
 {
@@ -1105,7 +1103,8 @@ _gf_msg_backtrace_nomem (gf_loglevel_t level, int stacksize)
                         fileno (stderr);
                 if (bt_size && (fd != -1)) {
                         /* print to the file fd, to prevent any
-                        * allocations from backtrace_symbols */
+                           allocations from backtrace_symbols
+                         */
                         backtrace_symbols_fd (&array[0], bt_size, fd);
                 }
         }
@@ -1153,7 +1152,6 @@ out:
         FREE (callingfn);
         return ret;
 }
-#endif /* HAVE_BACKTRACE */
 
 int
 _gf_msg_nomem (const char *domain, const char *file,
@@ -1261,9 +1259,7 @@ _gf_msg_nomem (const char *domain, const char *file,
                 }
                 pthread_mutex_unlock (&ctx->log.logfile_mutex);
 
-#ifdef HAVE_BACKTRACE
                 _gf_msg_backtrace_nomem (level, GF_LOG_BACKTRACE_DEPTH);
-#endif
 
                 break;
         }
@@ -2035,7 +2031,6 @@ _gf_msg (const char *domain, const char *file, const char *function,
         if (level > ctx->log.loglevel)
                 goto out;
 
-#if HAVE_BACKTRACE
         if (trace) {
                 ret = _gf_msg_backtrace (GF_LOG_BACKTRACE_DEPTH, callstr,
                                          GF_LOG_BACKTRACE_DEPTH);
@@ -2044,7 +2039,6 @@ _gf_msg (const char *domain, const char *file, const char *function,
                 else
                         ret = 0;
         }
-#endif /* HAVE_BACKTRACE */
 
         pthread_mutex_lock (&ctx->log.logfile_mutex);
         {
diff --git a/libglusterfs/src/store.h b/libglusterfs/src/store.h
index beb17ac4a2f..1ffd97c526f 100644
--- a/libglusterfs/src/store.h
+++ b/libglusterfs/src/store.h
@@ -15,6 +15,7 @@
 #include "config.h"
 #endif
 
+#include "compat.h"
 #include "glusterfs.h"
 
 struct gf_store_handle_ {
diff --git a/libglusterfs/src/syscall.c b/libglusterfs/src/syscall.c
index 7236958677d..48418091676 100644
--- a/libglusterfs/src/syscall.c
+++ b/libglusterfs/src/syscall.c
@@ -311,6 +311,8 @@ sys_fdatasync (int fd)
 {
 #ifdef GF_DARWIN_HOST_OS
         return fcntl (fd, F_FULLFSYNC);
+#elif __FreeBSD__
+	return fsync (fd);
 #else
         return fdatasync (fd);
 #endif