utils.c revision 10cc687667528f8e56827010e11a48ac1b0f0eb5
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync/** @file
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync *
5b281ba489ca18f0380d7efc7a5108b606cce449vboxsync * vboxvfs -- VirtualBox Guest Additions for Linux:
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync * Utility functions.
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync * Mainly conversion from/to VirtualBox/Linux data structures
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync */
c58f1213e628a545081c70e26c6b67a841cff880vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync/*
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync * Copyright (C) 2006-2007 innotek GmbH
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync *
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * available from http://www.virtualbox.org. This file is free software;
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License as published by the Free Software Foundation,
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * distribution. VirtualBox OSE is distributed in the hope that it will
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * be useful, but WITHOUT ANY WARRANTY of any kind.
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync */
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync#include "vfsmod.h"
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync/* #define USE_VMALLOC */
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync#if LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 0)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstatic void
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_ftime_from_timespec (time_t *time, RTTIMESPEC *ts)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int64_t t = RTTimeSpecGetNano (ts);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync do_div (t, 1000000000);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync *time = t;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
aa4bcf0a4b2db3ac352b56a291d49cb8d4b66d32vboxsync#else
aa4bcf0a4b2db3ac352b56a291d49cb8d4b66d32vboxsyncstatic void
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_ftime_from_timespec (struct timespec *tv, RTTIMESPEC *ts)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int64_t t = RTTimeSpecGetNano (ts);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int64_t nsec;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync nsec = do_div (t, 1000000000);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync tv->tv_sec = t;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync tv->tv_nsec = nsec;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#endif
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync/* set [inode] attributes based on [info], uid/gid based on [sf_g] */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncvoid
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_init_inode (struct sf_glob_info *sf_g, struct inode *inode,
192a1d418422c3b5905dd2577527c07a8ed8b61evboxsync RTFSOBJINFO *info)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int is_dir;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync RTFSOBJATTR *attr;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int mode;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync attr = &info->Attr;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync is_dir = RTFS_IS_DIRECTORY (attr->fMode);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#define mode_set(r) attr->fMode & (RTFS_UNIX_##r) ? (S_##r) : 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode = mode_set (ISUID);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (ISGID);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IRUSR);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IWUSR);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IXUSR);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IRGRP);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IWGRP);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IXGRP);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IROTH);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IWOTH);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync mode |= mode_set (IXOTH);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#undef mode_set
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (is_dir) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_mode = S_IFDIR | mode;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_op = &sf_dir_iops;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_fop = &sf_dir_fops;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync /* XXX: this probably should be set to the number of entries
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync in the directory plus two (. ..) */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_nlink = 1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync else {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_mode = S_IFREG | mode;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_op = &sf_reg_iops;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync inode->i_fop = &sf_reg_fops;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_nlink = 1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_uid = sf_g->uid;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_gid = sf_g->gid;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_size = info->cbObject;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) && !defined(KERNEL_FC6)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_blksize = 4096;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#endif
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync inode->i_blocks = (info->cbObject + 4095) / 4096;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync sf_ftime_from_timespec (&inode->i_atime, &info->AccessTime);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync sf_ftime_from_timespec (&inode->i_ctime, &info->ChangeTime);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync sf_ftime_from_timespec (&inode->i_mtime, &info->ModificationTime);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncint
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_stat (const char *caller, struct sf_glob_info *sf_g,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync SHFLSTRING *path, RTFSOBJINFO *result, int ok_to_fail)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int rc;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync SHFLCREATEPARMS params;
ed5b7c45a1afeb14ae8c2dfd7e01723dbb869f31vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync params.CreateFlags = SHFL_CF_LOOKUP | SHFL_CF_ACT_FAIL_IF_NEW;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("calling vboxCallCreate, file %s, flags %#x\n",
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync path->String.utf8, params.CreateFlags));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync rc = vboxCallCreate (&client_handle, &sf_g->map, path, &params);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (VBOX_FAILURE (rc)) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("vboxCallCreate(%s) failed. caller=%s, rc=%Vrc\n",
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync path->String.utf8, rc, caller));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return -EPROTO;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (params.Result != SHFL_FILE_EXISTS) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (!ok_to_fail) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("vboxCallCreate(%s) file does not exist. caller=%s, result=%d\n",
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync path->String.utf8, params.Result, caller));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return -ENOENT;
192a1d418422c3b5905dd2577527c07a8ed8b61evboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync *result = params.Info;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync/* this is called directly as iop on 2.4, indirectly as dop
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync [sf_dentry_revalidate] on 2.4/2.6, indirectly as iop through
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync [sf_getattr] on 2.6. the job is to find out whether dentry/inode is
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync still valid. the test is failed if [dentry] does not have an inode
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync or [sf_stat] is unsuccessful, otherwise we return success and
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync update inode attributes */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncint
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_inode_revalidate (struct dentry *dentry)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int err;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_glob_info *sf_g;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_inode_info *sf_i;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync RTFSOBJINFO info;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (!dentry || !dentry->d_inode) {
2a2b173b54c259e34320ce0acf26f18e9382ce2avboxsync LogFunc(("no dentry(%p) or inode(%p)\n", dentry, dentry->d_inode));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return -EINVAL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync sf_g = GET_GLOB_INFO (dentry->d_inode->i_sb);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync sf_i = GET_INODE_INFO (dentry->d_inode);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#if 0
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync printk ("%s called by %p:%p\n",
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync sf_i->path->String.utf8,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync __builtin_return_address (0),
2a2b173b54c259e34320ce0acf26f18e9382ce2avboxsync __builtin_return_address (1));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#endif
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync BUG_ON (!sf_g);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync BUG_ON (!sf_i);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (!sf_i->force_restat) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (jiffies - dentry->d_time < sf_g->ttl) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync err = sf_stat (__func__, sf_g, sf_i->path, &info, 1);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (err) {
2a2b173b54c259e34320ce0acf26f18e9382ce2avboxsync return err;
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync }
2a2b173b54c259e34320ce0acf26f18e9382ce2avboxsync
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync dentry->d_time = jiffies;
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync sf_init_inode (sf_g, dentry->d_inode, &info);
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync return 0;
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync}
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync/* this is called during name resolution/lookup to check if the
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync [dentry] in the cache is still valid. the job is handled by
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync [sf_inode_revalidate] */
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsyncstatic int
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync#if LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 0)
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsyncsf_dentry_revalidate (struct dentry *dentry, int flags)
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync#else
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync sf_dentry_revalidate (struct dentry *dentry, struct nameidata *nd)
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync#endif
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync{
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync TRACE ();
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync if (sf_inode_revalidate (dentry)) {
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync return 0;
2a2b173b54c259e34320ce0acf26f18e9382ce2avboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return 1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync/* on 2.6 this is a proxy for [sf_inode_revalidate] which (as a side
192a1d418422c3b5905dd2577527c07a8ed8b61evboxsync effect) updates inode attributes for [dentry] (given that [dentry]
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync has inode at all) from these new attributes we derive [kstat] via
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync [generic_fillattr] */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#if LINUX_VERSION_CODE >= KERNEL_VERSION (2, 6, 0)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncint
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_getattr (struct vfsmount *mnt, struct dentry *dentry, struct kstat *kstat)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int err;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync err = sf_inode_revalidate (dentry);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (err) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return err;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync generic_fillattr (dentry->d_inode, kstat);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#endif
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstatic int
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_make_path (const char *caller, struct sf_inode_info *sf_i,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync const char *d_name, size_t d_len, SHFLSTRING **result)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync size_t path_len, shflstring_len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync SHFLSTRING *tmp;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync uint16_t p_len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync uint8_t *p_name;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync uint8_t *dst;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int is_root = 0;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync p_len = sf_i->path->u16Length;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync p_name = sf_i->path->String.utf8;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (p_len == 1 && *p_name == '/') {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync path_len = d_len + 1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync is_root = 1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync else {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync /* lengths of constituents plus terminating zero plus slash */
830a019ad79a45e6bf7a5419efd5a729a36e599evboxsync path_len = p_len + d_len + 2;
830a019ad79a45e6bf7a5419efd5a729a36e599evboxsync if (path_len > 0xffff) {
830a019ad79a45e6bf7a5419efd5a729a36e599evboxsync LogFunc(("path too long. caller=%s, path_len=%zu\n", caller, path_len));
830a019ad79a45e6bf7a5419efd5a729a36e599evboxsync return -ENAMETOOLONG;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync shflstring_len = offsetof (SHFLSTRING, String.utf8) + path_len;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync tmp = kmalloc (shflstring_len, GFP_KERNEL);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (!tmp) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogRelFunc(("kmalloc failed, caller=%s\n", caller));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return -ENOMEM;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync tmp->u16Length = path_len - 1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync tmp->u16Size = path_len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (is_root) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync memcpy (tmp->String.utf8, d_name, d_len + 1);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync else {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync dst = tmp->String.utf8;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync memcpy (dst, p_name, p_len);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync dst += p_len; *dst++ = '/';
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync memcpy (dst, d_name, d_len);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync dst[d_len] = 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync *result = tmp;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync/* [dentry] contains string encoded in coding system that corresponds
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync to [sf_g]->nls, we must convert it to UTF8 here and pass down to
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync [sf_make_path] which will allocate SHFLSTRING and fill it in */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncint
5b0a093ca572a855886faa6747ad46df859dd041vboxsyncsf_path_from_dentry (const char *caller, struct sf_glob_info *sf_g,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_inode_info *sf_i, struct dentry *dentry,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync SHFLSTRING **result)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int err;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync const char *d_name;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync size_t d_len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync const char *name;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync size_t len = 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync d_name = dentry->d_name.name;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync d_len = dentry->d_name.len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (sf_g->nls) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync size_t in_len, i, out_bound_len;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync const char *in;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync char *out;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync in = d_name;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync in_len = d_len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync out_bound_len = PATH_MAX;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync out = kmalloc (out_bound_len, GFP_KERNEL);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync name = out;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync for (i = 0; i < d_len; ++i) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync /* We renamed the linux kernel wchar_t type to linux_wchar_t in
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync the-linux-kernel.h, as it conflicts with the C++ type of that name. */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync linux_wchar_t uni;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int nb;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync nb = sf_g->nls->char2uni (in, in_len, &uni);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync if (nb < 0) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("nls->char2uni failed %x %d\n",
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync *in, in_len));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync err = -EINVAL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync goto fail1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync in_len -= nb;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync in += nb;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync nb = utf8_wctomb (out, uni, out_bound_len);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (nb < 0) {
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync LogFunc(("nls->uni2char failed %x %d\n",
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync uni, out_bound_len));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync err = -EINVAL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync goto fail1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync out_bound_len -= nb;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync out += nb;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync len += nb;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (len >= PATH_MAX - 1) {
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync err = -ENAMETOOLONG;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync goto fail1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("result(%d) = %.*s\n", len, len, name));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync *out = 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync else {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync name = d_name;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync len = d_len;
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync err = sf_make_path (caller, sf_i, name, len, result);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (name != d_name) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync kfree (name);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return err;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync fail1:
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync kfree (name);
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync return err;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncint
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_nlscpy (struct sf_glob_info *sf_g,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync char *name, size_t name_bound_len,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync const unsigned char *utf8_name, size_t utf8_len)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync if (sf_g->nls) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync const char *in;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync char *out;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync size_t out_len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync size_t out_bound_len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync size_t in_bound_len;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync in = utf8_name;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync in_bound_len = utf8_len;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync out = name;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync out_len = 0;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync out_bound_len = name_bound_len;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync while (in_bound_len) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync int nb;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync wchar_t uni;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync nb = utf8_mbtowc (&uni, in, in_bound_len);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync if (nb < 0) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync LogFunc(("utf8_mbtowc failed(%s) %x:%d\n",
5b0a093ca572a855886faa6747ad46df859dd041vboxsync (const char *) utf8_name, *in, in_bound_len));
5b0a093ca572a855886faa6747ad46df859dd041vboxsync return -EINVAL;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync in += nb;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync in_bound_len -= nb;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync nb = sf_g->nls->uni2char (uni, out, out_bound_len);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync if (nb < 0) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync LogFunc(("nls->uni2char failed(%s) %x:%d\n",
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync utf8_name, uni, out_bound_len));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return nb;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync out += nb;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync out_bound_len -= nb;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync out_len += nb;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync *out = 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync else {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (utf8_len + 1 > name_bound_len) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return -ENAMETOOLONG;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync else {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync memcpy (name, utf8_name, utf8_len + 1);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstatic struct sf_dir_buf *
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_dir_buf_alloc (void)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_dir_buf *b;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b = kmalloc (sizeof (*b), GFP_KERNEL);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (!b) {
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync LogRelFunc(("could not alloc directory buffer\n"));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return NULL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#ifdef USE_VMALLOC
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b->buf = vmalloc (16384);
993a55bd118e0b54549b3f0b380a8fbd6246a040vboxsync#else
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b->buf = kmalloc (16384, GFP_KERNEL);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#endif
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (!b->buf) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync kfree (b);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogRelFunc(("could not alloc directory buffer storage\n"));
192a1d418422c3b5905dd2577527c07a8ed8b61evboxsync return NULL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync INIT_LIST_HEAD (&b->head);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b->nb_entries = 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b->used_bytes = 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b->free_bytes = 16384;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return b;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstatic void
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_dir_buf_free (struct sf_dir_buf *b)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
5b0a093ca572a855886faa6747ad46df859dd041vboxsync BUG_ON (!b || !b->buf);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync TRACE ();
5b0a093ca572a855886faa6747ad46df859dd041vboxsync list_del (&b->head);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync#ifdef USE_VMALLOC
5b0a093ca572a855886faa6747ad46df859dd041vboxsync vfree (b->buf);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync#else
5b0a093ca572a855886faa6747ad46df859dd041vboxsync kfree (b->buf);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync#endif
5b0a093ca572a855886faa6747ad46df859dd041vboxsync kfree (b);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync}
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsyncvoid
5b0a093ca572a855886faa6747ad46df859dd041vboxsyncsf_dir_info_free (struct sf_dir_info *p)
5b0a093ca572a855886faa6747ad46df859dd041vboxsync{
5b0a093ca572a855886faa6747ad46df859dd041vboxsync struct list_head *list, *pos, *tmp;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync TRACE ();
5b0a093ca572a855886faa6747ad46df859dd041vboxsync list = &p->info_list;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync list_for_each_safe (pos, tmp, list) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_dir_buf *b;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync b = list_entry (pos, struct sf_dir_buf, head);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync sf_dir_buf_free (b);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync kfree (p);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstruct sf_dir_info *
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_dir_info_alloc (void)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_dir_info *p;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync p = kmalloc (sizeof (*p), GFP_KERNEL);
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync if (!p) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogRelFunc(("could not alloc directory info\n"));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return NULL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync INIT_LIST_HEAD (&p->info_list);
993a55bd118e0b54549b3f0b380a8fbd6246a040vboxsync return p;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstatic struct sf_dir_buf *
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_get_non_empty_dir_buf (struct sf_dir_info *sf_d)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
192a1d418422c3b5905dd2577527c07a8ed8b61evboxsync struct list_head *list, *pos;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync list = &sf_d->info_list;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync list_for_each (pos, list) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_dir_buf *b;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b = list_entry (pos, struct sf_dir_buf, head);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (!b) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return NULL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync else {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (b->free_bytes > 0) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return b;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return NULL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncint
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_dir_read_all (struct sf_glob_info *sf_g, struct sf_inode_info *sf_i,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_dir_info *sf_d, SHFLHANDLE handle)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync{
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync int err;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync SHFLSTRING *mask;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync struct sf_dir_buf *b;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync TRACE ();
5b0a093ca572a855886faa6747ad46df859dd041vboxsync err = sf_make_path (__func__, sf_i, "*", 1, &mask);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync if (err) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync goto fail0;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync b = sf_get_non_empty_dir_buf (sf_d);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync for (;;) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync int rc;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync void *buf;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync uint32_t buf_size;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync uint32_t nb_ents;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync if (!b) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync b = sf_dir_buf_alloc ();
5b0a093ca572a855886faa6747ad46df859dd041vboxsync if (!b) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync err = -ENOMEM;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync LogRelFunc(("could not alloc directory buffer\n"));
5b0a093ca572a855886faa6747ad46df859dd041vboxsync goto fail1;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync }
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync list_add (&b->head, &sf_d->info_list);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync buf = b->buf;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync buf_size = b->free_bytes;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync
5b0a093ca572a855886faa6747ad46df859dd041vboxsync rc = vboxCallDirInfo (
5b0a093ca572a855886faa6747ad46df859dd041vboxsync &client_handle,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync &sf_g->map,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync handle,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync mask,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync 0,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync 0,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync &buf_size,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync buf,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync &nb_ents
5b0a093ca572a855886faa6747ad46df859dd041vboxsync );
5b0a093ca572a855886faa6747ad46df859dd041vboxsync switch (rc) {
5b0a093ca572a855886faa6747ad46df859dd041vboxsync case VINF_SUCCESS:
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync /* fallthrough */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync case VERR_NO_MORE_FILES:
5b0a093ca572a855886faa6747ad46df859dd041vboxsync break;
0c8e85263a357c44964520942cb5816ab1c2e69dvboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync case VERR_NO_TRANSLATION:
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("host could not translate entry\n"));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync /* XXX */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync break;
192a1d418422c3b5905dd2577527c07a8ed8b61evboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync default:
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync err = -RTErrConvertToErrno (rc);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("vboxCallDirInfo failed rc=%Vrc\n", rc));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync goto fail1;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b->nb_entries += nb_ents;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b->free_bytes -= buf_size;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b->used_bytes += buf_size;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync b = NULL;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (VBOX_FAILURE (rc)) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync break;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync }
0c8e85263a357c44964520942cb5816ab1c2e69dvboxsync }
0c8e85263a357c44964520942cb5816ab1c2e69dvboxsync return 0;
0c8e85263a357c44964520942cb5816ab1c2e69dvboxsync
0c8e85263a357c44964520942cb5816ab1c2e69dvboxsync fail1:
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync kfree (mask);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync fail0:
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync return err;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync}
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstruct dentry_operations sf_dentry_ops = {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync .d_revalidate = sf_dentry_revalidate
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync};
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync