Fix the current libc breakage in current:

o Back out the __std* stuff.  Can't figure out how to do this right now,
  so we'll save it for late.
o use _up as a pointer for extra fields that we need to access.
o back out the libc major version bump.

Submitted by: green
reviewed by: peter, imp, green, obrien (to varying degrees).

We'll fix the "how do we stop encoding sizeof(FILE) in binaries" part
later.

1 files changed, 25 insertions, 14 deletions

diff --git a/lib/libc/stdio/findfp.c b/lib/libc/stdio/findfp.c
index 48eb5b5..e0f0e29 100644
--- a/lib/libc/stdio/findfp.c
+++ b/lib/libc/stdio/findfp.c
@@ -59,21 +59,24 @@ int	__sdidinit;
 
 #define	NDYNAMIC 10		/* add ten more whenever necessary */
 
-#define	std(handle, flags, file) \
-FILE handle = {0,0,0,flags,file,{0},0,&handle,__sclose,__sread,__sseek,__swrite}
-/*	       p r w flags file _bf z  cookie    close    read    seek    write */
-
+#define	std(flags, file) \
+  	{0,0,0,flags,file,{0},0,__sF+file,__sclose,__sread,__sseek,__swrite, \
+	 {0}, __sFX + file}
+  /*	 p r w flags file _bf z  cookie      close    read    seek    write */
+  /*     _ub _extra */
 				/* the usual - (stdin + stdout + stderr) */
 static FILE usual[FOPEN_MAX - 3];
 static struct glue uglue = { NULL, FOPEN_MAX - 3, usual };
 
-std(__stdin, __SRD, STDIN_FILENO);
-std(__stdout, __SWR, STDOUT_FILENO);
-std(__stderr, __SWR|__SNBF, STDERR_FILENO);
+static struct __sFILEX __sFX[3];
+
+FILE __sF[3] = {
+	std(__SRD, STDIN_FILENO),
+	std(__SWR, STDOUT_FILENO),
+	std(__SWR|__SNBF, STDERR_FILENO)
+};
 
-static struct glue sglue2 = { &uglue, 1, &__stderr };
-static struct glue sglue1 = { &sglue2, 1, &__stdout };
-struct glue __sglue = { &sglue1, 1, &__stdin };
+struct glue __sglue = { &uglue, 3, __sF };
 static struct glue *lastglue = &uglue;
 
 static struct glue *	moreglue __P((int));
@@ -93,18 +96,26 @@ moreglue(n)
 	int n;
 {
 	struct glue *g;
-	FILE *p;
 	static FILE empty;
+	static struct __sFILEX emptyx;
+	FILE *p;
+	struct __sFILEX *fx;
 
-	g = (struct glue *)malloc(sizeof(*g) + ALIGNBYTES + n * sizeof(FILE));
+	g = (struct glue *)malloc(sizeof(*g) + ALIGNBYTES + n * sizeof(FILE) +
+	    n * sizeof(struct __sFILEX));
 	if (g == NULL)
 		return (NULL);
 	p = (FILE *)ALIGN(g + 1);
+	fx = (struct __sFILEX *)&p[n];
 	g->next = NULL;
 	g->niobs = n;
 	g->iobs = p;
-	while (--n >= 0)
-		*p++ = empty;
+	while (--n >= 0) {
+		*p = empty;
+		p->_extra = fx;
+		*p->_extra = emptyx;
+		p++, fx++;
+	}
 	return (g);
 }