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Implement _PC_PIPE_BUF.

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Now that the kernel has appropriate support we can implement this
fpathconf command correctly.
This commit is contained in:
Ulrich Drepper 2010-07-06 07:48:23 -07:00
parent 03e87550e3
commit 8a492a675e
2 changed files with 15 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2010-07-06 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/fpathconf.c (__fpathconf): Implement
_PC_PIPE_BUF using F_GETPIPE_SZ.
2010-07-02 Ulrich Drepper <drepper@redhat.com>
* elf/Makefile: Fix linking for a few tests to make recent linker

11
sysdeps/unix/sysv/linux/fpathconf.c
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@ -1,5 +1,6 @@
/* Get file-specific information about descriptor FD. Linux version.
Copyright (C) 1991,1995,1996,1998-2003,2008 Free Software Foundation, Inc.
Copyright (C) 1991,1995,1996,1998-2003,2008,2010
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
@ -17,6 +18,7 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <fcntl.h>
#include "pathconf.h"
static long int posix_fpathconf (int fd, int name);
@ -33,6 +35,7 @@ __fpathconf (fd, name)
int name;
{
struct statfs fsbuf;
int r;
switch (name)
{
@ -48,6 +51,12 @@ __fpathconf (fd, name)
case _PC_CHOWN_RESTRICTED:
return __statfs_chown_restricted (__fstatfs (fd, &fsbuf), &fsbuf);
case _PC_PIPE_BUF:
r = fcntl (fd, F_GETPIPE_SZ);
if (r > 0)
return r;
/* FALLTHROUGH */
default:
return posix_fpathconf (fd, name);
}