Adopt Debian's fix-FTBFS-on-GNU-Hurd.patch.

- Took the original patch by Ondrej Sury;
- Applied a fix for a known problem in the patch:
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=882062
- Fixed a few other issues

5 files changed, 64 insertions, 17 deletions

diff --git a/cmake/dtrace.cmake b/cmake/dtrace.cmake
index d7ab0f31991..bb45eaf865b 100644
--- a/cmake/dtrace.cmake
+++ b/cmake/dtrace.cmake
@@ -46,6 +46,10 @@ MACRO(CHECK_DTRACE)
      AND NOT CMAKE_SYSTEM_NAME MATCHES "SunOS")
    SET(ENABLE_DTRACE ON CACHE BOOL "Enable dtrace")
  ENDIF()
+ # On GNU/Hurd, dtrace is not supported
+ IF(DTRACE AND CMAKE_SYSTEM_NAME MATCHES "GNU")
+   SET(ENABLE_DTRACE OFF CACHE BOOL "Disable dtrace")
+ ENDIF()
  SET(HAVE_DTRACE ${ENABLE_DTRACE})
  IF(CMAKE_SYSTEM_NAME MATCHES "SunOS")
    IF(CMAKE_SIZEOF_VOID_P EQUAL 4)
diff --git a/cmake/package_name.cmake b/cmake/package_name.cmake
index 4930a6bf40a..a8bd1596f47 100644
--- a/cmake/package_name.cmake
+++ b/cmake/package_name.cmake
@@ -77,6 +77,9 @@ IF(NOT VERSION)
           SET(DEFAULT_MACHINE "i386")
         ENDIF()
       ENDIF()
+    ELSEIF(CMAKE_SYSTEM_NAME MATCHES "GNU")
+      SET(DEFAULT_PLATFORM "GNU")
+      SET(DEFAULT_MACHINE "i386")
     ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Darwin")
       IF(CMAKE_OSX_DEPLOYMENT_TARGET)
         SET(DEFAULT_PLATFORM "osx${CMAKE_OSX_DEPLOYMENT_TARGET}")
diff --git a/extra/mariabackup/backup_copy.cc b/extra/mariabackup/backup_copy.cc
index d3253348d72..7cdc6b8e3a6 100644
--- a/extra/mariabackup/backup_copy.cc
+++ b/extra/mariabackup/backup_copy.cc
@@ -623,11 +623,14 @@ static
 int
 mkdirp(const char *pathname, int Flags, myf MyFlags)
 {
-	char parent[PATH_MAX], *p;
+	char *parent, *p;
+	int len = strlen(pathname) + 1;
 
 	/* make a parent directory path */
-	strncpy(parent, pathname, sizeof(parent));
-	parent[sizeof(parent) - 1] = 0;
+	if (!(parent= (char *)malloc(len)))
+          return(-1);
+	strncpy(parent, pathname, len);
+	parent[len-1]= 0;
 
 	for (p = parent + strlen(parent);
 	    !is_path_separator(*p) && p != parent; p--);
@@ -636,19 +639,23 @@ mkdirp(const char *pathname, int Flags, myf MyFlags)
 
 	/* try to make parent directory */
 	if (p != parent && mkdirp(parent, Flags, MyFlags) != 0) {
+		free(parent);
 		return(-1);
 	}
 
 	/* make this one if parent has been made */
 	if (my_mkdir(pathname, Flags, MyFlags) == 0) {
+		free(parent);
 		return(0);
 	}
 
 	/* if it already exists that is fine */
 	if (errno == EEXIST) {
+		free(parent);
 		return(0);
 	}
 
+	free(parent);
 	return(-1);
 }
 
@@ -658,17 +665,24 @@ bool
 equal_paths(const char *first, const char *second)
 {
 #ifdef HAVE_REALPATH
-	char real_first[PATH_MAX];
-	char real_second[PATH_MAX];
+	char *real_first, *real_second;
+	int result;
 
-	if (realpath(first, real_first) == NULL) {
+	real_first = realpath(first, 0);
+	if (real_first == NULL) {
 		return false;
 	}
-	if (realpath(second, real_second) == NULL) {
+
+	real_second = realpath(second, 0);
+	if (real_second == NULL) {
+		free(real_first);
 		return false;
 	}
 
-	return (strcmp(real_first, real_second) == 0);
+	result = strcmp(real_first, real_second);
+	free(real_first);
+	free(real_second);
+	return result == 0;
 #else
 	return strcmp(first, second) == 0;
 #endif
diff --git a/sql/wsrep_binlog.cc b/sql/wsrep_binlog.cc
index 998f4e72157..52934ff10cd 100644
--- a/sql/wsrep_binlog.cc
+++ b/sql/wsrep_binlog.cc
@@ -318,13 +318,23 @@ int wsrep_write_cache(wsrep_t*  const wsrep,
 
 void wsrep_dump_rbr_buf(THD *thd, const void* rbr_buf, size_t buf_len)
 {
-  char filename[PATH_MAX]= {0};
-  int len= snprintf(filename, PATH_MAX, "%s/GRA_%ld_%lld.log",
+  int len= snprintf(NULL, 0, "%s/GRA_%ld_%lld.log",
                     wsrep_data_home_dir, thd->thread_id,
                     (long long)wsrep_thd_trx_seqno(thd));
-  if (len >= PATH_MAX)
+  if (len < 0)
   {
-    WSREP_ERROR("RBR dump path too long: %d, skipping dump.", len);
+    WSREP_ERROR("snprintf error: %d, skipping dump.", len);
+    DBUG_VOID_RETURN;
+  }
+
+  char *filename= (char *)malloc(len++);
+  int len1= snprintf(filename, len, "%s/GRA_%ld_%lld.log",
+                    wsrep_data_home_dir, thd->thread_id,
+                    (long long)wsrep_thd_trx_seqno(thd));
+  if (len >= len1)
+  {
+    WSREP_ERROR("RBR dump path truncated: %d, skipping dump.", len);
+    free(filename);
     return;
   }
 
@@ -343,6 +353,7 @@ void wsrep_dump_rbr_buf(THD *thd, const void* rbr_buf, size_t buf_len)
     WSREP_ERROR("Failed to open file '%s': %d (%s)",
                 filename, errno, strerror(errno));
   }
+  free(filename);
 }
 
 /*
@@ -448,19 +459,32 @@ void wsrep_dump_rbr_buf_with_header(THD *thd, const void *rbr_buf,
 {
   DBUG_ENTER("wsrep_dump_rbr_buf_with_header");
 
-  char filename[PATH_MAX]= {0};
   File file;
   IO_CACHE cache;
   Log_event_writer writer(&cache);
   Format_description_log_event *ev=NULL;
 
-  int len= my_snprintf(filename, PATH_MAX, "%s/GRA_%ld_%lld_v2.log",
+  longlong thd_trx_seqno= (long long)wsrep_thd_trx_seqno(thd);
+
+  int len= my_snprintf(NULL, 0, "%s/GRA_%ld_%lld_v2.log",
                        wsrep_data_home_dir, thd->thread_id,
-                       (long long) wsrep_thd_trx_seqno(thd));
+                       thd_trx_seqno);
 
-  if (len >= PATH_MAX)
+  char *filename;
+  if (len < 0 || !(filename= (char*)malloc(len++)))
   {
-    WSREP_ERROR("RBR dump path too long: %d, skipping dump.", len);
+    WSREP_ERROR("snprintf error: %d, skipping dump.", len);
+    DBUG_VOID_RETURN;
+  }
+
+  int len1= my_snprintf(filename, len, "%s/GRA_%ld_%lld_v2.log",
+                        wsrep_data_home_dir, thd->thread_id,
+                        thd_trx_seqno);
+
+  if (len >= len1)
+  {
+    WSREP_ERROR("RBR dump path truncated: %d, skipping dump.", len);
+    free(filename);
     DBUG_VOID_RETURN;
   }
 
@@ -501,6 +525,7 @@ cleanup2:
   end_io_cache(&cache);
 
 cleanup1:
+  free(filename);
   mysql_file_close(file, MYF(MY_WME));
 
   if (!thd->wsrep_applier) delete ev;
diff --git a/storage/mroonga/vendor/groonga/config.h.cmake b/storage/mroonga/vendor/groonga/config.h.cmake
index bfd0cbdc012..ec67c5eea23 100644
--- a/storage/mroonga/vendor/groonga/config.h.cmake
+++ b/storage/mroonga/vendor/groonga/config.h.cmake
@@ -107,6 +107,7 @@
 #cmakedefine HAVE_SIGNAL_H
 #cmakedefine HAVE_SYS_MMAN_H
 #cmakedefine HAVE_SYS_PARAM_H
+#cmakedefine HAVE_SYS_POLL_H
 #cmakedefine HAVE_SYS_RESOURCE_H
 #cmakedefine HAVE_SYS_SELECT_H
 #cmakedefine HAVE_SYS_SOCKET_H