Merge branch 'master' of git://git.ucc.asn.au/tpg/acess2

[tpg/acess2.git] / Usermode / Libraries / libposix.so_src / unistd.c

diff --git a/Usermode/Libraries/libposix.so_src/unistd.c b/Usermode/Libraries/libposix.so_src/unistd.c
index 3af7bcb..dca2963 100644 (file)
--- a/Usermode/Libraries/libposix.so_src/unistd.c
+++ b/Usermode/Libraries/libposix.so_src/unistd.c
@@ -292,3 +292,21 @@ int ttyname_r(int fd, char *buf, size_t buflen)
 
        return ENOTIMPL;
 }
+
+int isatty(int fd)
+{
+       if( fd < 0 ) {
+               errno = EBADF;
+               return 0;
+       }
+       
+        int    type = _SysIOCtl(fd, DRV_IOCTL_TYPE, NULL);
+       if( type == -1 )
+               return 0;
+       if( type != DRV_TYPE_TERMINAL ) {
+               errno = ENOTTY;
+               // NOTE: Pre POSIX 2001, EINVAL was returned
+               return 0;
+       }
+       return 1;
+}