X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=support%2Ferrno.c;h=76b4b388e9862170e2647ed127d1bf71017f1fbd;hb=30cddad5fb4c3d290906a6e6c33ecd8b07d8b48c;hp=878e9560eb6db36d565cc35d49773d62ca7b236a;hpb=04d1b4116331e3813b8f75304f714a5d61ba1214;p=mono.git

diff --git a/support/errno.c b/support/errno.c
index 878e9560eb6..76b4b388e98 100644
--- a/support/errno.c
+++ b/support/errno.c
@@ -4,11 +4,18 @@
 
 #include <errno.h>
 #include <string.h>
+#include "map.h"
 #include "mph.h"
 #include <stdio.h>
 
 G_BEGIN_DECLS
 
+int
+Mono_Posix_Stdlib_GetLastError (void)
+{
+	return errno;
+}
+
 void
 Mono_Posix_Stdlib_SetLastError (int error_number)
 {
@@ -79,7 +86,27 @@ Mono_Posix_Syscall_strerror_r (int errnum, char *buf, mph_size_t n)
 	mph_return_if_size_t_overflow (n);
 
 	/* first, check for valid errnum */
+#if HOST_ANDROID
+	/* Android NDK defines _GNU_SOURCE but strerror_r follows the XSI semantics
+	 * not the GNU one. XSI version returns an integer, as opposed to the GNU one
+	 * which returns pointer to the buffer.
+	 */
+	if (strerror_r (errnum, ebuf, sizeof(ebuf)) == -1) {
+		/* XSI strerror_r will return -1 if errno is set, but if we leave the value
+		 * alone it breaks Mono.Posix StdioFileStream tests, so we'll ignore the value
+		 * and set errno as below
+		 */
+		errno = EINVAL;
+		return -1;
+	}
+	r = ebuf;
+#else
 	r = strerror_r (errnum, ebuf, sizeof(ebuf));
+#endif
+	if (!r) {
+		errno = EINVAL;
+		return -1;
+	} 
 	len = strlen (r);
 
 	if (r == ebuf ||