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8dc51fe5ab
The autofs4 module doesn't consider symlinks for expire as it did in the older autofs v3 module (so it's actually a long standing regression). The user space daemon has focused on the use of bind mounts instead of symlinks for a long time now and that's why this has not been noticed. But with the future addition of amd map parsing to automount(8), not to mention amd itself (of am-utils), symlink expiry will be needed. The direct and offset mount types can't be symlinks and the tree mounts of version 4 were always real mounts so only indirect mounts need expire symlinks. Since the current users of the autofs4 module haven't reported this as a problem to date this patch probably isn't a candidate for backport to stable. Signed-off-by: Ian Kent <ikent@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
29 lines
951 B
C
29 lines
951 B
C
/* -*- c -*- --------------------------------------------------------------- *
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*
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* linux/fs/autofs/symlink.c
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*
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* Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
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*
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* This file is part of the Linux kernel and is made available under
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* the terms of the GNU General Public License, version 2, or at your
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* option, any later version, incorporated herein by reference.
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*
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* ------------------------------------------------------------------------- */
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#include "autofs_i.h"
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static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
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{
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struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
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struct autofs_info *ino = autofs4_dentry_ino(dentry);
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if (ino && !autofs4_oz_mode(sbi))
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ino->last_used = jiffies;
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nd_set_link(nd, dentry->d_inode->i_private);
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return NULL;
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}
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const struct inode_operations autofs4_symlink_inode_operations = {
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.readlink = generic_readlink,
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.follow_link = autofs4_follow_link
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};
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