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2.5-18.1

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This commit is contained in:
Jakub Jelinek
2007-07-12 18:26:36 +00:00
parent 7d58530341
commit 0ecb606cb6
6215 changed files with 494638 additions and 305010 deletions
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29
sysdeps/unix/sysv/linux/ttyname.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1991,92,93,1996-2001,2002 Free Software Foundation, Inc.
/* Copyright (C) 1991,92,93,1996-2002,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -22,11 +22,13 @@
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <termios.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio-common/_itoa.h>
#include <kernel-features.h>
#if 0
/* Is this used anywhere? It is not exported. */
@ -41,7 +43,7 @@ static char *getttyname (const char *dev, dev_t mydev,
libc_freeres_ptr (static char *getttyname_name);
static char *
internal_function
internal_function attribute_compat_text_section
getttyname (const char *dev, dev_t mydev, ino64_t myino, int save, int *dostat)
{
static size_t namelen;
@ -117,9 +119,11 @@ ttyname (int fd)
int dostat = 0;
char *name;
int save = errno;
int len;
struct termios term;
if (!__isatty (fd))
/* isatty check, tcgetattr is used because it sets the correct
errno (EBADF resp. ENOTTY) on error. */
if (__builtin_expect (__tcgetattr (fd, &term) < 0, 0))
return NULL;
/* We try using the /proc filesystem. */
@ -136,10 +140,19 @@ ttyname (int fd)
}
}
len = __readlink (procname, ttyname_buf, buflen);
if (len != -1
/* This is for Linux 2.0. */
&& ttyname_buf[0] != '[')
ssize_t len = __readlink (procname, ttyname_buf, buflen);
if (__builtin_expect (len == -1 && errno == ENOENT, 0))
{
__set_errno (EBADF);
return NULL;
}
if (__builtin_expect (len != -1
#ifndef __ASSUME_PROC_SELF_FD_SYMLINK
/* This is for Linux 2.0. */
&& ttyname_buf[0] != '['
#endif
, 1))
{
if ((size_t) len >= buflen)
return NULL;