From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 2 Apr 2011 17:55:54 +0000 (-0400)
Subject: don't disable seeking after first seek failure
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=8de03e1a90e60f62806c488cfa4985f99e869f87;p=musl

don't disable seeking after first seek failure

this could cause problems if the application uses dup2(fd,fileno(f))
to redirect, and the old fd was not seekable but the new fd is.
---

diff --git a/src/stdio/__stdio_seek.c b/src/stdio/__stdio_seek.c
index 35ae788c..13e06a66 100644
--- a/src/stdio/__stdio_seek.c
+++ b/src/stdio/__stdio_seek.c
@@ -1,11 +1,5 @@
 #include "stdio_impl.h"
 
-static off_t retneg1(FILE *f, off_t off, int whence)
-{
-	errno = ESPIPE;
-	return -1;
-}
-
 off_t __stdio_seek(FILE *f, off_t off, int whence)
 {
 	off_t ret;
@@ -15,7 +9,5 @@ off_t __stdio_seek(FILE *f, off_t off, int whence)
 #else
 	ret = syscall(SYS_lseek, f->fd, off, whence);
 #endif
-	/* Detect unseekable files and optimize future failures out */
-	if (ret < 0 && errno == ESPIPE) f->seek = retneg1;
 	return ret;
 }