X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fstdio%2Ffseek.c;h=8d9da4408fbfe22ed5cef60c7c05354e53e40adb;hp=bfaad375ddd55cc9ff3a13ad359da5ca017d78e2;hb=e3cd6c5c265cd481db6e0c5b529855d99f0bda30;hpb=ea343364a719add2cd8adf8a50c15bb5f9400dd8

diff --git a/src/stdio/fseek.c b/src/stdio/fseek.c
index bfaad375..8d9da440 100644
--- a/src/stdio/fseek.c
+++ b/src/stdio/fseek.c
@@ -5,17 +5,25 @@ int __fseeko_unlocked(FILE *f, off_t off, int whence)
 	/* Adjust relative offset for unread data in buffer, if any. */
 	if (whence == SEEK_CUR) off -= f->rend - f->rpos;
 
-	/* If writing, flush output. */
-	if (f->wpos > f->buf && __oflow(f)) return -1;
+	/* Flush write buffer, and report error on failure. */
+	if (f->wpos > f->wbase) {
+		f->write(f, 0, 0);
+		if (!f->wpos) return -1;
+	}
 
-	/* Perform the underlying seek operation. */
-	if (f->seek(f, off, whence) < 0) return -1;
+	/* Leave writing mode */
+	f->wpos = f->wbase = f->wend = 0;
+
+	/* Perform the underlying seek. */
+	if (f->seek(f, off, whence) < 0) {
+		f->flags |= F_ERR;
+		return -1;
+	}
 
 	/* If seek succeeded, file is seekable and we discard read buffer. */
-	f->rpos = f->rend = f->rstop = 0;
+	f->rpos = f->rend = 0;
 	f->flags &= ~F_EOF;
 	
-	FUNLOCK(f);	
 	return 0;
 }