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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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78
sysdeps/unix/sysv/linux/pathconf.c
View File

@ -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>