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2002-10-16 Roland McGrath <roland@redhat.com>

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* sysdeps/unix/sysv/linux/fpathconf.c (LINUX_LINK_MAX): Move macro ...
	* sysdeps/unix/sysv/linux/linux_fsinfo.h (LINUX_LINK_MAX): ... here.
	* sysdeps/unix/sysv/linux/pathconf.h: New file.
	(statfs_link_max): New function, guts from fpathconf.c.
	* sysdeps/unix/sysv/linux/fpathconf.c: Rewritten using that.
	* sysdeps/unix/sysv/linux/pathconf.c (__pathconf): Likewise.
	* sysdeps/unix/sysv/linux/alpha/pathconf.c (__pathconf): Rewritten
	to use the linux/pathconf.c code by #include rather than duplication.
	* sysdeps/unix/sysv/linux/alpha/fpathconf.c (__pathconf): Likewise.
This commit is contained in:
Roland McGrath 2002-10-16 22:09:42 +00:00
parent f977f8e520
commit 0d83b42e2d
6 changed files with 123 additions and 260 deletions
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86
sysdeps/unix/sysv/linux/alpha/fpathconf.c
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@ -1,4 +1,5 @@
/* Copyright (C) 1991,1995,1996,1998,2000,2002 Free Software Foundation, Inc.
/* Get file-specific information about a descriptor. Linux/Alpha version.
Copyright (C) 1991,95,96,98,99,2000,2001,2002 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
@ -16,36 +17,25 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <stddef.h>
#include <unistd.h>
#include <limits.h>
#include <sys/statfs.h>
#include <linux_fsinfo.h>
static long int linux_fpathconf (int fd, int name);
/* Define this first, so it can be inlined. */
#define __fpathconf static linux_fpathconf
#include <sysdeps/unix/sysv/linux/fpathconf.c>
/* The Linux kernel header mentioned this as a kind of generic value. */
#define LINUX_LINK_MAX 127
static long int default_fpathconf (int fd, int name);
/* Get file-specific information about descriptor FD. */
/* Get file-specific information about FD. */
long int
__fpathconf (fd, name)
int fd;
int name;
__pathconf (int fd, int name)
{
if (fd < 0)
{
__set_errno (EBADF);
return -1;
}
if (name == _PC_FILESIZEBITS)
{
/* Test whether this is on a ext2 filesystem which supports large
files. */
/* Test whether this is on a ext2 or UFS filesystem which
support large files. */
struct statfs fs;
if (__fstatfs (fd, &fs) < 0
@ -57,56 +47,6 @@ __fpathconf (fd, name)
/* This filesystem supported files >2GB. */
return 64;
}
if (name == _PC_LINK_MAX)
{
struct statfs fsbuf;
/* Determine the filesystem type. */
if (__fstatfs (fd, &fsbuf) < 0)
/* not possible, return the default value. */
return LINUX_LINK_MAX;
switch (fsbuf.f_type)
{
case EXT2_SUPER_MAGIC:
return EXT2_LINK_MAX;
case MINIX_SUPER_MAGIC:
case MINIX_SUPER_MAGIC2:
return MINIX_LINK_MAX;
case MINIX2_SUPER_MAGIC:
case MINIX2_SUPER_MAGIC2:
return MINIX2_LINK_MAX;
case XENIX_SUPER_MAGIC:
return XENIX_LINK_MAX;
case SYSV4_SUPER_MAGIC:
case SYSV2_SUPER_MAGIC:
return SYSV_LINK_MAX;
case COH_SUPER_MAGIC:
return COH_LINK_MAX;
case UFS_MAGIC:
case UFS_CIGAM:
return UFS_LINK_MAX;
case REISERFS_SUPER_MAGIC:
return REISERFS_LINK_MAX;
case XFS_SUPER_MAGIC:
return XFS_LINK_MAX;
default:
return LINUX_LINK_MAX;
}
}
/* Fallback to the generic version. */
return default_fpathconf (fd, name);
return linux_fpathconf (fd, name);
}
#define __fpathconf static default_fpathconf
#include <sysdeps/posix/fpathconf.c>

70
sysdeps/unix/sysv/linux/alpha/pathconf.c
View File

@ -1,4 +1,5 @@
/* Copyright (C) 1991, 1995, 1996, 1998, 2000 Free Software Foundation, Inc.
/* Get file-specific information about a file. Linux/Alpha version.
Copyright (C) 1991,95,96,98,99,2000,2001,2002 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
@ -16,24 +17,19 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <stddef.h>
#include <unistd.h>
#include <limits.h>
#include <fcntl.h>
#include <sys/statfs.h>
#include <linux_fsinfo.h>
static long int linux_pathconf (const char *file, int name);
/* Define this first, so it can be inlined. */
#define __pathconf static linux_pathconf
#include <sysdeps/unix/sysv/linux/pathconf.c>
/* The Linux kernel header mentioned this as a kind of generic value. */
#define LINUX_LINK_MAX 127
static long int default_pathconf (const char *path, int name);
/* Get file-specific information about PATH. */
/* Get file-specific information about FILE. */
long int
__pathconf (const char *path, int name)
__pathconf (const char *file, int name)
{
if (name == _PC_FILESIZEBITS)
{
@ -41,7 +37,7 @@ __pathconf (const char *path, int name)
support large files. */
struct statfs fs;
if (__statfs (path, &fs) < 0
if (__statfs (file, &fs) < 0
|| (fs.f_type != EXT2_SUPER_MAGIC
&& fs.f_type != UFS_MAGIC
&& fs.f_type != UFS_CIGAM))
@ -50,50 +46,6 @@ __pathconf (const char *path, int name)
/* This filesystem supported files >2GB. */
return 64;
}
if (name == _PC_LINK_MAX)
{
struct statfs fsbuf;
/* Determine the filesystem type. */
if (__statfs (path, &fsbuf) < 0)
/* not possible, return the default value. */
return LINUX_LINK_MAX;
switch (fsbuf.f_type)
{
case EXT2_SUPER_MAGIC:
return EXT2_LINK_MAX;
case MINIX_SUPER_MAGIC:
case MINIX_SUPER_MAGIC2:
return MINIX_LINK_MAX;
case MINIX2_SUPER_MAGIC:
case MINIX2_SUPER_MAGIC2:
return MINIX2_LINK_MAX;
case XENIX_SUPER_MAGIC:
return XENIX_LINK_MAX;
case SYSV4_SUPER_MAGIC:
case SYSV2_SUPER_MAGIC:
return SYSV_LINK_MAX;
case COH_SUPER_MAGIC:
return COH_LINK_MAX;
case UFS_MAGIC:
case UFS_CIGAM:
return UFS_LINK_MAX;
default:
return LINUX_LINK_MAX;
}
}
/* Fallback to the generic version. */
return default_pathconf (path, name);
return linux_pathconf (file, name);
}
#define __pathconf static default_pathconf
#include <sysdeps/posix/pathconf.c>

69
sysdeps/unix/sysv/linux/fpathconf.c
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@ -1,4 +1,4 @@
/* Linux specific extensions to fpathconf.
/* Get file-specific information about descriptor FD. Linux version.
Copyright (C) 1991,95,96,98,99,2000,2001,2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -17,19 +17,14 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <unistd.h>
#include <limits.h>
#include <sys/statfs.h>
#include "linux_fsinfo.h"
/* The Linux kernel header mentioned this as a kind of generic value. */
#define LINUX_LINK_MAX 127
#include "pathconf.h"
static long int posix_fpathconf (int fd, int name);
/* Define this first, so it can be inlined. */
#define __fpathconf static posix_fpathconf
#include <sysdeps/posix/fpathconf.c>
/* Get file-specific information about descriptor FD. */
long int
@ -40,58 +35,8 @@ __fpathconf (fd, name)
if (name == _PC_LINK_MAX)
{
struct statfs fsbuf;
/* Determine the filesystem type. */
if (__fstatfs (fd, &fsbuf) < 0)
{
if (errno == ENOSYS)
/* not possible, return the default value. */
return LINUX_LINK_MAX;
/* Some error occured. */
return -1;
}
switch (fsbuf.f_type)
{
case EXT2_SUPER_MAGIC:
return EXT2_LINK_MAX;
case MINIX_SUPER_MAGIC:
case MINIX_SUPER_MAGIC2:
return MINIX_LINK_MAX;
case MINIX2_SUPER_MAGIC:
case MINIX2_SUPER_MAGIC2:
return MINIX2_LINK_MAX;
case XENIX_SUPER_MAGIC:
return XENIX_LINK_MAX;
case SYSV4_SUPER_MAGIC:
case SYSV2_SUPER_MAGIC:
return SYSV_LINK_MAX;
case COH_SUPER_MAGIC:
return COH_LINK_MAX;
case UFS_MAGIC:
case UFS_CIGAM:
return UFS_LINK_MAX;
case REISERFS_SUPER_MAGIC:
return REISERFS_LINK_MAX;
case XFS_SUPER_MAGIC:
return XFS_LINK_MAX;
default:
return LINUX_LINK_MAX;
}
return statfs_link_max (__fstatfs (fd, &fsbuf), &fsbuf);
}
return posix_fpathconf (fd, name);
}
#define __fpathconf static posix_fpathconf
#include <sysdeps/posix/fpathconf.c>

4
sysdeps/unix/sysv/linux/linux_fsinfo.h
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@ -115,4 +115,8 @@
#define XENIX_LINK_MAX 126 /* ?? */
#define XFS_LINK_MAX 2147483647
/* The Linux kernel header mentioned this as a kind of generic value. */
#define LINUX_LINK_MAX 127
#endif /* linux_fsinfo.h */

78
sysdeps/unix/sysv/linux/pathconf.c
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@ -1,5 +1,5 @@
/* Linux specific extensions to pathconf.
Copyright (C) 1991,95,96,98,99,2000,2001 Free Software Foundation, Inc.
/* Get file-specific information about a file. Linux version.
Copyright (C) 1991,95,96,98,99,2000,2001,2002 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
@ -17,78 +17,24 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <unistd.h>
#include <limits.h>
#include <sys/statfs.h>
#include "pathconf.h"
#include "linux_fsinfo.h"
static long int posix_pathconf (const char *file, int name);
/* Define this first, so it can be inlined. */
#define __pathconf static posix_pathconf
#include <sysdeps/posix/pathconf.c>
/* The Linux kernel header mentioned this as a kind of generic value. */
#define LINUX_LINK_MAX 127
static long int posix_pathconf (const char *path, int name);
/* Get file-specific information about descriptor FD. */
/* Get file-specific information about FILE. */
long int
__pathconf (path, name)
const char *path;
int name;
__pathconf (const char *file, int name)
{
if (name == _PC_LINK_MAX)
{
struct statfs fsbuf;
/* Determine the filesystem type. */
if (__statfs (path, &fsbuf) < 0)
{
if (errno == ENOSYS)
/* not possible, return the default value. */
return LINUX_LINK_MAX;
/* Some error occured. */
return -1;
}
switch (fsbuf.f_type)
{
case EXT2_SUPER_MAGIC:
return EXT2_LINK_MAX;
case MINIX_SUPER_MAGIC:
case MINIX_SUPER_MAGIC2:
return MINIX_LINK_MAX;
case MINIX2_SUPER_MAGIC:
case MINIX2_SUPER_MAGIC2:
return MINIX2_LINK_MAX;
case XENIX_SUPER_MAGIC:
return XENIX_LINK_MAX;
case SYSV4_SUPER_MAGIC:
case SYSV2_SUPER_MAGIC:
return SYSV_LINK_MAX;
case COH_SUPER_MAGIC:
return COH_LINK_MAX;
case UFS_MAGIC:
case UFS_CIGAM:
return UFS_LINK_MAX;
case REISERFS_SUPER_MAGIC:
return REISERFS_LINK_MAX;
default:
return LINUX_LINK_MAX;
}
return statfs_link_max (__statfs (file, &fsbuf), &fsbuf);
}
return posix_pathconf (path, name);
return posix_pathconf (file, name);
}
#define __pathconf static posix_pathconf
#include <sysdeps/posix/pathconf.c>

76
sysdeps/unix/sysv/linux/pathconf.h Normal file
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@ -0,0 +1,76 @@
/* Common parts of Linux implementation of pathconf and fpathconf.
Copyright (C) 1991,95,96,98,99,2000,2001,2002 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <unistd.h>
#include <errno.h>
#include <sys/statfs.h>
#include "linux_fsinfo.h"
/* Used like: return statfs_link_max (__statfs (name, &buf), &buf); */
static long int
statfs_link_max (int result, const struct statfs *fsbuf)
{
if (result < 0)
{
if (errno == ENOSYS)
/* Not possible, return the default value. */
return LINUX_LINK_MAX;
/* Some error occured. */
return -1;
}
switch (fsbuf->f_type)
{
case EXT2_SUPER_MAGIC:
return EXT2_LINK_MAX;
case MINIX_SUPER_MAGIC:
case MINIX_SUPER_MAGIC2:
return MINIX_LINK_MAX;
case MINIX2_SUPER_MAGIC:
case MINIX2_SUPER_MAGIC2:
return MINIX2_LINK_MAX;
case XENIX_SUPER_MAGIC:
return XENIX_LINK_MAX;
case SYSV4_SUPER_MAGIC:
case SYSV2_SUPER_MAGIC:
return SYSV_LINK_MAX;
case COH_SUPER_MAGIC:
return COH_LINK_MAX;
case UFS_MAGIC:
case UFS_CIGAM:
return UFS_LINK_MAX;
case REISERFS_SUPER_MAGIC:
return REISERFS_LINK_MAX;
case XFS_SUPER_MAGIC:
return XFS_LINK_MAX;
default:
return LINUX_LINK_MAX;
}
}