From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/stdio/__stdio_seek.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 src/stdio/__stdio_seek.c (limited to 'src/stdio/__stdio_seek.c') diff --git a/src/stdio/__stdio_seek.c b/src/stdio/__stdio_seek.c new file mode 100644 index 00000000..fdb9fe7f --- /dev/null +++ b/src/stdio/__stdio_seek.c @@ -0,0 +1,15 @@ +#include "stdio_impl.h" + +static off_t retneg1(FILE *f, off_t off, int whence) +{ + return -1; +} + +off_t __stdio_seek(FILE *f, off_t off, int whence) +{ + off_t ret = __syscall_lseek(f->fd, off, whence); + /* Detect unseekable files and optimize future failures out */ + if (ret < 0 && off == 0 && whence == SEEK_CUR) + f->seek = retneg1; + return ret; +} -- cgit v1.2.1