void to_compat_ipc_perm(struct compat_ipc_perm *to, struct ipc64_perm *from)
{
to->key = from->key;
SET_UID(to->uid, from->uid);
SET_GID(to->gid, from->gid);
SET_UID(to->cuid, from->cuid);
SET_GID(to->cgid, from->cgid);
to->mode = from->mode;
to->seq = from->seq;
}
int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf)
{
compat_ino_t ino;
typeof(ubuf->st_uid) uid = 0;
typeof(ubuf->st_gid) gid = 0;
SET_UID(uid, kbuf->uid);
SET_GID(gid, kbuf->gid);
if (!old_valid_dev(kbuf->dev) || !old_valid_dev(kbuf->rdev))
return -EOVERFLOW;
if (kbuf->size >= 0x7fffffff)
return -EOVERFLOW;
ino = kbuf->ino;
if (sizeof(ino) < sizeof(kbuf->ino) && ino != kbuf->ino)
return -EOVERFLOW;
if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) ||
__put_user (old_encode_dev(kbuf->dev), &ubuf->st_dev) ||
__put_user (ino, &ubuf->st_ino) ||
__put_user (kbuf->mode, &ubuf->st_mode) ||
__put_user (kbuf->nlink, &ubuf->st_nlink) ||
__put_user (uid, &ubuf->st_uid) ||
__put_user (gid, &ubuf->st_gid) ||
__put_user (old_encode_dev(kbuf->rdev), &ubuf->st_rdev) ||
__put_user (kbuf->size, &ubuf->st_size) ||
__put_user (kbuf->atime.tv_sec, &ubuf->st_atime) ||
__put_user (kbuf->atime.tv_nsec, &ubuf->st_atime_nsec) ||
__put_user (kbuf->mtime.tv_sec, &ubuf->st_mtime) ||
__put_user (kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
__put_user (kbuf->ctime.tv_sec, &ubuf->st_ctime) ||
__put_user (kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
__put_user (kbuf->blksize, &ubuf->st_blksize) ||
__put_user (kbuf->blocks, &ubuf->st_blocks))
return -EFAULT;
return 0;
}
static int
cp_stat64(struct stat64 __user *ubuf, struct kstat *stat)
{
typeof(ubuf->st_uid) uid = 0;
typeof(ubuf->st_gid) gid = 0;
SET_UID(uid, stat->uid);
SET_GID(gid, stat->gid);
if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
__put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) ||
__put_user (stat->ino, &ubuf->__st_ino) ||
__put_user (stat->ino, &ubuf->st_ino) ||
__put_user (stat->mode, &ubuf->st_mode) ||
__put_user (stat->nlink, &ubuf->st_nlink) ||
__put_user (uid, &ubuf->st_uid) ||
__put_user (gid, &ubuf->st_gid) ||
__put_user (huge_encode_dev(stat->rdev), &ubuf->st_rdev) ||
__put_user (stat->size, &ubuf->st_size) ||
__put_user (stat->atime.tv_sec, &ubuf->st_atime) ||
__put_user (stat->atime.tv_nsec, &ubuf->st_atime_nsec) ||
__put_user (stat->mtime.tv_sec, &ubuf->st_mtime) ||
__put_user (stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
__put_user (stat->ctime.tv_sec, &ubuf->st_ctime) ||
__put_user (stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
__put_user (stat->blksize, &ubuf->st_blksize) ||
__put_user (stat->blocks, &ubuf->st_blocks))
return -EFAULT;
return 0;
}
static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
{
struct compat_stat tmp;
if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
return -EOVERFLOW;
memset(&tmp, 0, sizeof(tmp));
tmp.st_dev = old_encode_dev(stat->dev);
tmp.st_ino = stat->ino;
if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
return -EOVERFLOW;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
if (tmp.st_nlink != stat->nlink)
return -EOVERFLOW;
SET_UID(tmp.st_uid, stat->uid);
SET_GID(tmp.st_gid, stat->gid);
tmp.st_rdev = old_encode_dev(stat->rdev);
if ((u64) stat->size > MAX_NON_LFS)
return -EOVERFLOW;
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_mtime_nsec = stat->mtime.tv_nsec;
tmp.st_ctime = stat->ctime.tv_sec;
tmp.st_ctime_nsec = stat->ctime.tv_nsec;
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
return copy_to_user(ubuf, &tmp, sizeof(tmp)) ? -EFAULT : 0;
}
/*
* For backward compatibility? Maybe this should be moved
* into arch/i386 instead?
*/
static int cp_old_stat(struct kstat *stat, struct __old_kernel_stat __user * statbuf)
{
static int warncount = 5;
struct __old_kernel_stat tmp;
if (warncount > 0) {
warncount--;
printk(KERN_WARNING "VFS: Warning: %s using old stat() call. Recompile your binary.\n",
current->comm);
} else if (warncount < 0) {
/* it's laughable, but... */
warncount = 0;
}
memset(&tmp, 0, sizeof(struct __old_kernel_stat));
tmp.st_dev = old_encode_dev(stat->dev);
tmp.st_ino = stat->ino;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
if (tmp.st_nlink != stat->nlink)
return -EOVERFLOW;
SET_UID(tmp.st_uid, stat->uid);
SET_GID(tmp.st_gid, stat->gid);
tmp.st_rdev = old_encode_dev(stat->rdev);
#if BITS_PER_LONG == 32
if (stat->size > MAX_NON_LFS)
return -EOVERFLOW;
#endif
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_ctime = stat->ctime.tv_sec;
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
int cp_compat_stat(struct kstat64 *kbuf, struct compat_stat __user *ubuf)
{
typeof(ubuf->st_uid) uid = 0;
typeof(ubuf->st_gid) gid = 0;
SET_UID(uid, kbuf->uid);
SET_GID(gid, kbuf->gid);
if (!old_valid_dev(kbuf->dev) || !old_valid_dev(kbuf->rdev))
return -EOVERFLOW;
if (kbuf->size >= 0x7fffffff)
return -EOVERFLOW;
if (kbuf->ino64 != (u32)kbuf->ino64)
return -EOVERFLOW;
if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) ||
__put_user (old_encode_dev(kbuf->dev), &ubuf->st_dev) ||
__put_user (kbuf->ino64, &ubuf->st_ino) ||
__put_user (kbuf->mode, &ubuf->st_mode) ||
__put_user (kbuf->nlink, &ubuf->st_nlink) ||
__put_user (uid, &ubuf->st_uid) ||
__put_user (gid, &ubuf->st_gid) ||
__put_user (old_encode_dev(kbuf->rdev), &ubuf->st_rdev) ||
__put_user (kbuf->size, &ubuf->st_size) ||
__put_user (kbuf->atime.tv_sec, &ubuf->st_atime) ||
__put_user (kbuf->atime.tv_nsec, &ubuf->st_atime_nsec) ||
__put_user (kbuf->mtime.tv_sec, &ubuf->st_mtime) ||
__put_user (kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
__put_user (kbuf->ctime.tv_sec, &ubuf->st_ctime) ||
__put_user (kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
__put_user (kbuf->blksize, &ubuf->st_blksize) ||
__put_user (kbuf->blocks, &ubuf->st_blocks))
return -EFAULT;
return 0;
}
int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
{
struct compat_stat tmp;
if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
return -EOVERFLOW;
memset(&tmp, 0, sizeof(tmp));
tmp.st_dev = new_encode_dev(stat->dev);
tmp.st_ino = stat->ino;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
SET_UID(tmp.st_uid, stat->uid);
SET_GID(tmp.st_gid, stat->gid);
tmp.st_rdev = new_encode_dev(stat->rdev);
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_ctime = stat->ctime.tv_sec;
#ifdef STAT_HAVE_NSEC
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime_nsec = stat->mtime.tv_nsec;
tmp.st_ctime_nsec = stat->ctime.tv_nsec;
#endif
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
static inline int __put_compat_ipc_perm(struct ipc64_perm *p,
struct compat_ipc_perm __user *up)
{
int err;
__compat_uid_t u;
__compat_gid_t g;
err = __put_user(p->key, &up->key);
SET_UID(u, p->uid);
err |= __put_user(u, &up->uid);
SET_GID(g, p->gid);
err |= __put_user(g, &up->gid);
SET_UID(u, p->cuid);
err |= __put_user(u, &up->cuid);
SET_GID(g, p->cgid);
err |= __put_user(g, &up->cgid);
err |= __put_user(p->mode, &up->mode);
err |= __put_user(p->seq, &up->seq);
return err;
}
static int cp_new_stat(struct kstat *stat, struct stat __user *statbuf)
{
struct stat tmp;
#if BITS_PER_LONG == 32
if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
return -EOVERFLOW;
#else
if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
return -EOVERFLOW;
#endif
memset(&tmp, 0, sizeof(tmp));
#if BITS_PER_LONG == 32
tmp.st_dev = old_encode_dev(stat->dev);
#else
tmp.st_dev = new_encode_dev(stat->dev);
#endif
tmp.st_ino = stat->ino;
if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
return -EOVERFLOW;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
if (tmp.st_nlink != stat->nlink)
return -EOVERFLOW;
SET_UID(tmp.st_uid, stat->uid);
SET_GID(tmp.st_gid, stat->gid);
#if BITS_PER_LONG == 32
tmp.st_rdev = old_encode_dev(stat->rdev);
#else
tmp.st_rdev = new_encode_dev(stat->rdev);
#endif
#if BITS_PER_LONG == 32
if (stat->size > MAX_NON_LFS)
return -EOVERFLOW;
#endif
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_ctime = stat->ctime.tv_sec;
#ifdef STAT_HAVE_NSEC
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime_nsec = stat->mtime.tv_nsec;
tmp.st_ctime_nsec = stat->ctime.tv_nsec;
#endif
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
scribe_data_non_det();
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
{
compat_ino_t ino = stat->ino;
typeof(ubuf->st_uid) uid = 0;
typeof(ubuf->st_gid) gid = 0;
int err;
SET_UID(uid, stat->uid);
SET_GID(gid, stat->gid);
if ((u64) stat->size > MAX_NON_LFS ||
!old_valid_dev(stat->dev) ||
!old_valid_dev(stat->rdev))
return -EOVERFLOW;
if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
return -EOVERFLOW;
if (clear_user(ubuf, sizeof(*ubuf)))
return -EFAULT;
err = __put_user(old_encode_dev(stat->dev), &ubuf->st_dev);
err |= __put_user(ino, &ubuf->st_ino);
err |= __put_user(stat->mode, &ubuf->st_mode);
err |= __put_user(stat->nlink, &ubuf->st_nlink);
err |= __put_user(uid, &ubuf->st_uid);
err |= __put_user(gid, &ubuf->st_gid);
err |= __put_user(old_encode_dev(stat->rdev), &ubuf->st_rdev);
err |= __put_user(stat->size, &ubuf->st_size);
err |= __put_user(stat->atime.tv_sec, &ubuf->st_atime);
err |= __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec);
err |= __put_user(stat->mtime.tv_sec, &ubuf->st_mtime);
err |= __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec);
err |= __put_user(stat->ctime.tv_sec, &ubuf->st_ctime);
err |= __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec);
err |= __put_user(stat->blksize, &ubuf->st_blksize);
err |= __put_user(stat->blocks, &ubuf->st_blocks);
return err;
}
static int cp_new_stat(struct kstat *stat, struct stat __user *statbuf)
{
struct stat tmp;
if (!valid_dev(stat->dev) || !valid_dev(stat->rdev))
return -EOVERFLOW;
#if BITS_PER_LONG == 32
if (stat->size > MAX_NON_LFS)
return -EOVERFLOW;
#endif
INIT_STRUCT_STAT_PADDING(tmp);
tmp.st_dev = encode_dev(stat->dev);
tmp.st_ino = stat->ino;
if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
return -EOVERFLOW;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
if (tmp.st_nlink != stat->nlink)
return -EOVERFLOW;
SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
tmp.st_rdev = encode_dev(stat->rdev);
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_ctime = stat->ctime.tv_sec;
#ifdef STAT_HAVE_NSEC
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime_nsec = stat->mtime.tv_nsec;
tmp.st_ctime_nsec = stat->ctime.tv_nsec;
#endif
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
static int smb_fill_super(struct super_block *sb, void *raw_data, int silent)
{
struct smb_sb_info *server;
struct smb_mount_data_kernel *mnt;
struct smb_mount_data *oldmnt;
struct inode *root_inode;
struct smb_fattr root;
int ver;
void *mem;
if (!raw_data)
goto out_no_data;
oldmnt = (struct smb_mount_data *) raw_data;
ver = oldmnt->version;
if (ver != SMB_MOUNT_OLDVERSION && cpu_to_be32(ver) != SMB_MOUNT_ASCII)
goto out_wrong_data;
sb->s_flags |= MS_NODIRATIME;
sb->s_blocksize = 1024; /* Eh... Is this correct? */
sb->s_blocksize_bits = 10;
sb->s_magic = SMB_SUPER_MAGIC;
sb->s_op = &smb_sops;
sb->s_time_gran = 100;
server = smb_kmalloc(sizeof(struct smb_sb_info), GFP_KERNEL);
if (!server)
goto out_no_server;
sb->s_fs_info = server;
memset(server, 0, sizeof(struct smb_sb_info));
server->super_block = sb;
server->mnt = NULL;
server->sock_file = NULL;
init_waitqueue_head(&server->conn_wq);
init_MUTEX(&server->sem);
INIT_LIST_HEAD(&server->entry);
INIT_LIST_HEAD(&server->xmitq);
INIT_LIST_HEAD(&server->recvq);
server->conn_error = 0;
server->conn_pid = 0;
server->state = CONN_INVALID; /* no connection yet */
server->generation = 0;
/* Allocate the global temp buffer and some superblock helper structs */
/* FIXME: move these to the smb_sb_info struct */
VERBOSE("alloc chunk = %d\n", sizeof(struct smb_ops) +
sizeof(struct smb_mount_data_kernel));
mem = smb_kmalloc(sizeof(struct smb_ops) +
sizeof(struct smb_mount_data_kernel), GFP_KERNEL);
if (!mem)
goto out_no_mem;
server->ops = mem;
smb_install_null_ops(server->ops);
server->mnt = mem + sizeof(struct smb_ops);
/* Setup NLS stuff */
server->remote_nls = NULL;
server->local_nls = NULL;
mnt = server->mnt;
memset(mnt, 0, sizeof(struct smb_mount_data_kernel));
strlcpy(mnt->codepage.local_name, CONFIG_NLS_DEFAULT,
SMB_NLS_MAXNAMELEN);
strlcpy(mnt->codepage.remote_name, SMB_NLS_REMOTE,
SMB_NLS_MAXNAMELEN);
mnt->ttl = SMB_TTL_DEFAULT;
if (ver == SMB_MOUNT_OLDVERSION) {
mnt->version = oldmnt->version;
SET_UID(mnt->uid, oldmnt->uid);
SET_GID(mnt->gid, oldmnt->gid);
mnt->file_mode = (oldmnt->file_mode & S_IRWXUGO) | S_IFREG;
mnt->dir_mode = (oldmnt->dir_mode & S_IRWXUGO) | S_IFDIR;
mnt->flags = (oldmnt->file_mode >> 9) | SMB_MOUNT_UID |
SMB_MOUNT_GID | SMB_MOUNT_FMODE | SMB_MOUNT_DMODE;
} else {
int difference_direntrylist()
{
int ndiffs; /* Number of differences found */
struct direntry* entry_prev; /* Pointer to iterate through previous direntrylist */
struct direntry* entry_cur; /* Pointer to iterate through current direntry list */
ndiffs = 0;
// Populate the curdir list with entries in directory right now
exploredir(curdir, (const char*)full_path); /* Global variable: full_path */
// No differences if there is no entries in the directory
if (curdir->count == 0 && prevdir->count == 0) {
return 0;
}
entry_prev = prevdir->head;
while (entry_prev != NULL) {
if ((entry_cur = find_direntry(curdir, entry_prev)) != NULL
&& !IS_CHECKED(entry_prev->mask)) {
// Permissions
if (entry_prev->attrs.st_mode != entry_cur->attrs.st_mode) {
SET_MODIFIED(entry_prev->mask);
SET_PERM(entry_prev->mask);
ndiffs++;
}
// UID
if (entry_prev->attrs.st_uid != entry_cur->attrs.st_uid) {
SET_MODIFIED(entry_prev->mask);
SET_UID(entry_prev->mask);
ndiffs++;
}
// GID
if (entry_prev->attrs.st_gid != entry_cur->attrs.st_gid) {
SET_MODIFIED(entry_prev->mask);
SET_GID(entry_prev->mask);
ndiffs++;
}
// Size
if (entry_prev->attrs.st_size != entry_cur->attrs.st_size) {
SET_MODIFIED(entry_prev->mask);
SET_SIZE(entry_prev->mask);
ndiffs++;
}
// Access time
if (entry_prev->attrs.st_atime != entry_cur->attrs.st_atime) {
SET_MODIFIED(entry_prev->mask);
SET_LAT(entry_prev->mask);
ndiffs++;
}
// Modified time
if (entry_prev->attrs.st_mtime != entry_cur->attrs.st_mtime) {
SET_MODIFIED(entry_prev->mask);
SET_LMT(entry_prev->mask);
ndiffs++;
}
// File status time
if (entry_prev->attrs.st_ctime != entry_cur->attrs.st_ctime) {
SET_MODIFIED(entry_prev->mask);
SET_LFST(entry_prev->mask);
ndiffs++;
}
// Show that the entries have been checked for differences
// and not to check them again
SET_CHECKED(entry_prev->mask);
SET_CHECKED(entry_cur->mask);
} else {
// If a previous entry cannot be found in the current directory,
// it was removed
SET_REMOVED(entry_prev->mask);
ndiffs++;
}
entry_prev = entry_prev->next;
}
// Now check for any entries that have been added to the monitored
// directory
entry_cur = curdir->head;
while (entry_cur != NULL) {
if (!IS_CHECKED(entry_cur->mask)) {
SET_ADDED(entry_cur->mask);
ndiffs++;
}
entry_cur = entry_cur->next;
}
return ndiffs;
}