From b7c75fab5b4387779ab31dd4bdc2c6ca82bbb6f2 Mon Sep 17 00:00:00 2001
From: Ben Gras <ben@minix3.org>
Date: Fri, 17 Jun 2005 11:43:24 +0000
Subject: [PATCH] Added dummy readlink() call that returns an error (we don't
 have symlinks yet)

also select() stub
---
 lib/posix/Makefile   |  4 ++++
 lib/posix/_select.c  | 46 +++++++++++++++++++++++++++++++++++++++-----
 lib/posix/readlink.c | 14 ++++++++++++++
 3 files changed, 59 insertions(+), 5 deletions(-)
 create mode 100644 lib/posix/readlink.c

diff --git a/lib/posix/Makefile b/lib/posix/Makefile
index cd8f68f8b..64d2c27c9 100755
--- a/lib/posix/Makefile
+++ b/lib/posix/Makefile
@@ -97,6 +97,7 @@ OBJECTS	= \
 	$(LIBRARY)(_write.o) \
 	$(LIBRARY)(gettimeofday.o) \
 	$(LIBRARY)(lstat.o) \
+	$(LIBRARY)(readlink.o) \
 	$(LIBRARY)(symlink.o) \
 
 $(LIBRARY):	$(OBJECTS)
@@ -370,6 +371,9 @@ $(LIBRARY)(_write.o):	_write.c
 $(LIBRARY)(gettimeofday.o):	gettimeofday.c
 	$(CC1) gettimeofday.c
 
+$(LIBRARY)(readlink.o):	readlink.c
+	$(CC1) readlink.c
+
 $(LIBRARY)(lstat.o):	lstat.c
 	$(CC1) lstat.c
 
diff --git a/lib/posix/_select.c b/lib/posix/_select.c
index 5d4cef4f1..d84808b40 100755
--- a/lib/posix/_select.c
+++ b/lib/posix/_select.c
@@ -8,11 +8,47 @@ PUBLIC int select(int nfds,
 {
   message m;
 
-  m.m8_i1 = nfds;
-  m.m8_p1 = (char *) readfds;
-  m.m8_p2 = (char *) writefds;
-  m.m8_p3 = (char *) errorfds;
-  m.m8_p4 = (char *) timeout;
+  m.SEL_NFDS = nfds;
+  m.SEL_READFDS = (char *) readfds;
+  m.SEL_WRITEFDS = (char *) writefds;
+  m.SEL_ERRORFDS = (char *) errorfds;
+  m.SEL_TIMEOUT = (char *) timeout;
 
   return (_syscall(FS, SELECT, &m));
 }
+
+#define FD_BITMASK(b)	(1L << ((b) % _FDSETBITSPERWORD))
+#define FD_BITWORD(b)	((b)/_FDSETBITSPERWORD)
+
+PUBLIC void FD_CLR(int fd, fd_set *fdset)
+{
+	if(fd < 0 || fd >= FD_SETSIZE) return;
+	fdset->_fdsetval[FD_BITWORD(fd)] &= ~(FD_BITMASK(fd));
+	return;
+}
+
+PUBLIC int FD_ISSET(int fd, fd_set *fdset)
+{
+	if(fd < 0 || fd >= FD_SETSIZE)
+		return 0;
+	if(fdset->_fdsetval[FD_BITWORD(fd)] & FD_BITMASK(fd))
+		return 1;
+	return 0;
+}
+
+PUBLIC void FD_SET(int fd, fd_set *fdset)
+{
+	if(fd < 0 || fd >= FD_SETSIZE)
+		return;
+	fdset->_fdsetval[FD_BITWORD(fd)] |= FD_BITMASK(fd);
+	return;
+}
+
+PUBLIC void FD_ZERO(fd_set *fdset)
+{
+	int i;
+	for(i = 0; i < _FDSETWORDS; i++)
+		fdset->_fdsetval[i] = 0;
+	return;
+}
+
diff --git a/lib/posix/readlink.c b/lib/posix/readlink.c
new file mode 100644
index 000000000..819c7eee1
--- /dev/null
+++ b/lib/posix/readlink.c
@@ -0,0 +1,14 @@
+/*
+readlink.c
+*/
+
+#define readlink _readlink
+
+#include <unistd.h>
+#include <errno.h>
+
+int readlink(const char *path, char *buf, int bufsiz)
+{
+	errno = EINVAL;	/* "The named file is not a symbolic link" */
+	return -1;
+}