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-rw-r--r--newlib/libc/include/sys/config.h1
-rw-r--r--newlib/libc/sys/linux/io.c4
2 files changed, 3 insertions, 2 deletions
diff --git a/newlib/libc/include/sys/config.h b/newlib/libc/include/sys/config.h
index 85683bc70..ae4fcdaa3 100644
--- a/newlib/libc/include/sys/config.h
+++ b/newlib/libc/include/sys/config.h
@@ -59,6 +59,7 @@
#define __DYNAMIC_REENT__
#define HAVE_GETDATE
#define _HAVE_SYSTYPES
+#define _READ_WRITE_RETURN_TYPE _ssize_t
#endif
#endif
diff --git a/newlib/libc/sys/linux/io.c b/newlib/libc/sys/linux/io.c
index 242c7cbf8..8da724e1f 100644
--- a/newlib/libc/sys/linux/io.c
+++ b/newlib/libc/sys/linux/io.c
@@ -20,9 +20,9 @@
#define __NR___flock __NR_flock
#define __NR___mknod __NR_mknod
-_syscall3(int,read,int,fd,void *,buf,size_t,count)
+_syscall3(ssize_t,read,int,fd,void *,buf,size_t,count)
_syscall3(ssize_t,readv,int,fd,const struct iovec *,vec,int,count)
-_syscall3(int,write,int,fd,const void *,buf,size_t,count)
+_syscall3(ssize_t,write,int,fd,const void *,buf,size_t,count)
_syscall3(ssize_t,writev,int,fd,const struct iovec *,buf,int,count)
_syscall3(int,open,const char *,file,int,flag,mode_t,mode)
_syscall1(int,close,int,fd)