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Fix compat handling in *at functions.

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When passed an empty string for the filename, the compat code
using /proc in all *at functions did the wrong thing.
This commit is contained in:
Ulrich Drepper
2009-10-29 21:33:26 -07:00
parent 584715c3a9
commit 801720e63b
19 changed files with 153 additions and 18 deletions
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8
sysdeps/unix/sysv/linux/unlinkat.c
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@ -1,5 +1,5 @@
/* unlinkat -- Remove a link by relative name.
Copyright (C) 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2005, 2006, 2009 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
@ -64,6 +64,12 @@ unlinkat (fd, file, flag)
if (fd != AT_FDCWD && file[0] != '/')
{
size_t filelen = strlen (file);
if (__builtin_expect (filelen == 0, 0))
{
__set_errno (ENOENT);
return -1;
}
static const char procfd[] = "/proc/self/fd/%d/%s";
/* Buffer for the path name we are going to use. It consists of
- the string /proc/self/fd/