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/*
Unix SMB/CIFS implementation.
POSIX NTVFS backend -
Copyright (C) Andrew Tridgell 2004
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "vfs_posix.h"
/****************************************************************************
Change a unix mode to a dos mode.
****************************************************************************/
static uint32_t dos_mode_from_stat(struct pvfs_state *pvfs, struct stat *st)
{
int result = 0;
if ((st->st_mode & S_IWUSR) == 0)
result |= FILE_ATTRIBUTE_READONLY;
if ((pvfs->flags & PVFS_FLAG_MAP_ARCHIVE) && ((st->st_mode & S_IXUSR) != 0))
result |= FILE_ATTRIBUTE_ARCHIVE;
if ((pvfs->flags & PVFS_FLAG_MAP_SYSTEM) && ((st->st_mode & S_IXGRP) != 0))
result |= FILE_ATTRIBUTE_SYSTEM;
if ((pvfs->flags & PVFS_FLAG_MAP_HIDDEN) && ((st->st_mode & S_IXOTH) != 0))
result |= FILE_ATTRIBUTE_HIDDEN;
if (S_ISDIR(st->st_mode))
result = FILE_ATTRIBUTE_DIRECTORY | (result & FILE_ATTRIBUTE_READONLY);
return result;
}
/*
fill in the dos file attributes for a file
*/
NTSTATUS pvfs_fill_dos_info(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd)
{
/* make directories appear as size 0 with 1 link */
if (S_ISDIR(name->st.st_mode)) {
name->st.st_size = 0;
name->st.st_nlink = 1;
} else if (name->stream_id == 0) {
name->stream_name = NULL;
}
/* for now just use the simple samba mapping */
unix_to_nt_time(&name->dos.create_time, name->st.st_ctime);
unix_to_nt_time(&name->dos.access_time, name->st.st_atime);
unix_to_nt_time(&name->dos.write_time, name->st.st_mtime);
unix_to_nt_time(&name->dos.change_time, name->st.st_ctime);
#ifdef HAVE_STAT_TV_NSEC
name->dos.create_time += name->st.st_ctim.tv_nsec / 100;
name->dos.access_time += name->st.st_atim.tv_nsec / 100;
name->dos.write_time += name->st.st_mtim.tv_nsec / 100;
name->dos.change_time += name->st.st_ctim.tv_nsec / 100;
#endif
name->dos.attrib = dos_mode_from_stat(pvfs, &name->st);
name->dos.alloc_size = pvfs_round_alloc_size(pvfs, name->st.st_size);
name->dos.nlink = name->st.st_nlink;
name->dos.ea_size = 4;
if (pvfs->ntvfs->ctx->protocol == PROTOCOL_SMB2) {
/* SMB2 represents a null EA with zero bytes */
name->dos.ea_size = 0;
}
name->dos.file_id = (((uint64_t)name->st.st_dev)<<32) | name->st.st_ino;
name->dos.flags = 0;
return pvfs_dosattrib_load(pvfs, name, fd);
}
/*
return a set of unix file permissions for a new file or directory
*/
mode_t pvfs_fileperms(struct pvfs_state *pvfs, uint32_t attrib)
{
mode_t mode = (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH);
if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE) &&
(attrib & FILE_ATTRIBUTE_READONLY)) {
mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
}
if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
if ((attrib & FILE_ATTRIBUTE_ARCHIVE) &&
(pvfs->flags & PVFS_FLAG_MAP_ARCHIVE)) {
mode |= S_IXUSR;
}
if ((attrib & FILE_ATTRIBUTE_SYSTEM) &&
(pvfs->flags & PVFS_FLAG_MAP_SYSTEM)) {
mode |= S_IXGRP;
}
if ((attrib & FILE_ATTRIBUTE_HIDDEN) &&
(pvfs->flags & PVFS_FLAG_MAP_HIDDEN)) {
mode |= S_IXOTH;
}
}
if (attrib & FILE_ATTRIBUTE_DIRECTORY) {
mode |= (S_IFDIR | S_IWUSR);
mode |= (S_IXUSR | S_IXGRP | S_IXOTH);
mode &= pvfs->options.dir_mask;
mode |= pvfs->options.force_dir_mode;
} else {
mode &= pvfs->options.create_mask;
mode |= pvfs->options.force_create_mode;
}
return mode;
}
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