utils.c revision 10cc687667528f8e56827010e11a48ac1b0f0eb5
5b281ba489ca18f0380d7efc7a5108b606cce449vboxsync * vboxvfs -- VirtualBox Guest Additions for Linux:
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync * Utility functions.
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync * Mainly conversion from/to VirtualBox/Linux data structures
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync * Copyright (C) 2006-2007 innotek GmbH
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/* #define USE_VMALLOC */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_ftime_from_timespec (time_t *time, RTTIMESPEC *ts)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_ftime_from_timespec (struct timespec *tv, RTTIMESPEC *ts)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync/* set [inode] attributes based on [info], uid/gid based on [sf_g] */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_init_inode (struct sf_glob_info *sf_g, struct inode *inode,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync#define mode_set(r) attr->fMode & (RTFS_UNIX_##r) ? (S_##r) : 0;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync /* XXX: this probably should be set to the number of entries
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync in the directory plus two (. ..) */
5b0a093ca572a855886faa6747ad46df859dd041vboxsync#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) && !defined(KERNEL_FC6)
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);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_stat (const char *caller, struct sf_glob_info *sf_g,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync SHFLSTRING *path, RTFSOBJINFO *result, int ok_to_fail)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync params.CreateFlags = SHFL_CF_LOOKUP | SHFL_CF_ACT_FAIL_IF_NEW;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("calling vboxCallCreate, file %s, flags %#x\n",
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync rc = vboxCallCreate (&client_handle, &sf_g->map, path, ¶ms);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("vboxCallCreate(%s) failed. caller=%s, rc=%Vrc\n",
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogFunc(("vboxCallCreate(%s) file does not exist. caller=%s, result=%d\n",
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 */
2a2b173b54c259e34320ce0acf26f18e9382ce2avboxsync LogFunc(("no dentry(%p) or inode(%p)\n", dentry, dentry->d_inode));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync err = sf_stat (__func__, sf_g, sf_i->path, &info, 1);
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] */
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsyncsf_dentry_revalidate (struct dentry *dentry, int flags)
3ae788d4138a852743619b65c7404deb5cbae3e7vboxsync sf_dentry_revalidate (struct dentry *dentry, struct nameidata *nd)
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] */
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_getattr (struct vfsmount *mnt, struct dentry *dentry, struct kstat *kstat)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_make_path (const char *caller, struct sf_inode_info *sf_i,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync const char *d_name, size_t d_len, SHFLSTRING **result)
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync /* lengths of constituents plus terminating zero plus slash */
830a019ad79a45e6bf7a5419efd5a729a36e599evboxsync LogFunc(("path too long. caller=%s, path_len=%zu\n", caller, path_len));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync shflstring_len = offsetof (SHFLSTRING, String.utf8) + path_len;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogRelFunc(("kmalloc failed, caller=%s\n", caller));
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 */
5b0a093ca572a855886faa6747ad46df859dd041vboxsyncsf_path_from_dentry (const char *caller, struct sf_glob_info *sf_g,
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync const char *d_name;
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync const char *name;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync const char *in;
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 err = sf_make_path (caller, sf_i, name, len, result);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync const char *in;
5b0a093ca572a855886faa6747ad46df859dd041vboxsync nb = sf_g->nls->uni2char (uni, out, out_bound_len);
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstatic struct sf_dir_buf *
4e47bb772df0d04d1ded3e06354de547d52e2d06vboxsync LogRelFunc(("could not alloc directory buffer\n"));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync LogRelFunc(("could not alloc directory buffer storage\n"));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncstatic struct sf_dir_buf *
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync if (b->free_bytes > 0) {
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsyncsf_dir_read_all (struct sf_glob_info *sf_g, struct sf_inode_info *sf_i,
5b0a093ca572a855886faa6747ad46df859dd041vboxsync err = sf_make_path (__func__, sf_i, "*", 1, &mask);
5b0a093ca572a855886faa6747ad46df859dd041vboxsync LogRelFunc(("could not alloc directory buffer\n"));
809e0c4b84167932d92a1df4edcbab2edf0ddf25vboxsync /* fallthrough */