Fixes for MacOSX and Solaris build

Fixes for Solaris and MacOSX build errors.

Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 481 (Fix compilation failures in Solaris)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=481

2 files changed, 102 insertions, 32 deletions

diff --git a/libglusterfs/src/compat.c b/libglusterfs/src/compat.c
index dc21aecf47e..76ced628629 100644
--- a/libglusterfs/src/compat.c
+++ b/libglusterfs/src/compat.c
@@ -369,38 +369,6 @@ solaris_getxattr(const char *path,
 }
 
 
-int
-asprintf(char **string_ptr, const char *format, ...)
-{ 
-	va_list arg;
-	char *str;
-	int size;
-	int rv;
-	
-	if (!string_ptr || !format)
-		return -1;
-	
-	va_start(arg, format);
-	size = vsnprintf(NULL, 0, format, arg);
-	size++;
-	va_start(arg, format);
-	str = MALLOC(size);
-	if (str == NULL) {
-		va_end(arg);
-		/*
-		 * Strictly speaking, GNU asprintf doesn't do this,
-		 * but the caller isn't checking the return value.
-		 */
-		gf_log ("libglusterfs", GF_LOG_CRITICAL, "failed to allocate memory");
-		return -1;
-	}
-	rv = vsnprintf(str, size, format, arg);
-	va_end(arg);
-	
-	*string_ptr = str;
-	return (rv);
-}  
-
 char* strsep(char** str, const char* delims)
 {
 	char* token;
@@ -424,6 +392,107 @@ char* strsep(char** str, const char* delims)
 	return token;
 }
 
+/* Code comes from libiberty */
+
+int
+vasprintf (char **result, const char *format, va_list args)
+{
+  const char *p = format;
+  /* Add one to make sure that it is never zero, which might cause malloc
+     to return NULL.  */
+  int total_width = strlen (format) + 1;
+  va_list ap;
+
+  /* this is not really portable but works under Windows */
+  memcpy ( &ap, &args, sizeof (va_list));
+
+  while (*p != '\0')
+    {
+      if (*p++ == '%')
+	{
+	  while (strchr ("-+ #0", *p))
+	    ++p;
+	  if (*p == '*')
+	    {
+	      ++p;
+	      total_width += abs (va_arg (ap, int));
+	    }
+	  else
+            {
+              char *endp;  
+              total_width += strtoul (p, &endp, 10);
+              p = endp;
+            }
+	  if (*p == '.')
+	    {
+	      ++p;
+	      if (*p == '*')
+		{
+		  ++p;
+		  total_width += abs (va_arg (ap, int));
+		}
+	      else
+                {
+                  char *endp;
+                  total_width += strtoul (p, &endp, 10);
+                  p = endp;
+                }
+	    }
+	  while (strchr ("hlL", *p))
+	    ++p;
+	  /* Should be big enough for any format specifier except %s
+             and floats.  */
+	  total_width += 30;
+	  switch (*p)
+	    {
+	    case 'd':
+	    case 'i':
+	    case 'o':
+	    case 'u':
+	    case 'x':
+	    case 'X':
+	    case 'c':
+	      (void) va_arg (ap, int);
+	      break;
+	    case 'f':
+	    case 'e':
+	    case 'E':
+	    case 'g':
+	    case 'G':
+	      (void) va_arg (ap, double);
+	      /* Since an ieee double can have an exponent of 307, we'll
+		 make the buffer wide enough to cover the gross case. */
+	      total_width += 307;
+	    
+	    case 's':
+	      total_width += strlen (va_arg (ap, char *));
+	      break;
+	    case 'p':
+	    case 'n':
+	      (void) va_arg (ap, char *);
+	      break;
+	    }
+	}
+    }
+  *result = malloc (total_width);
+  if (*result != NULL)
+    return vsprintf (*result, format, args);
+  else
+    return 0;
+}
+
+int
+asprintf (char **buf, const char *fmt, ...)
+{
+  int status;
+  va_list ap;
+
+  va_start (ap, fmt);
+  status = vasprintf (buf, fmt, ap);
+  va_end (ap);
+  return status;  
+}
+
 #endif /* GF_SOLARIS_HOST_OS */
 
 #ifndef HAVE_STRNLEN
diff --git a/libglusterfs/src/compat.h b/libglusterfs/src/compat.h
index 01683a17456..20db203bf9f 100644
--- a/libglusterfs/src/compat.h
+++ b/libglusterfs/src/compat.h
@@ -261,6 +261,7 @@ enum {
 
 int asprintf(char **string_ptr, const char *format, ...); 
 
+int vasprintf (char **result, const char *format, va_list args);
 char* strsep(char** str, const char* delims);
 int solaris_listxattr(const char *path, char *list, size_t size);
 int solaris_removexattr(const char *path, const char* key);