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https://github.com/samba-team/samba.git
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40a8d58551
test to pass. To try to make the code a bit more understandable, I moved to using an IDL description of the opendb tdb record format. One of the larger changes was to make directory opens and creates go via the opendb code, so directory operations now obey all the share mode restrictions, as well as delete on close semantics. I also changed the period over which the opendb locks are held, to try to minimise races due to two open operations happening at the same time. (This used to be commit cd2602d05725e1734b0862131dd91601c6b6d51a)
134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
/*
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Unix SMB/CIFS implementation.
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POSIX NTVFS backend -
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Copyright (C) Andrew Tridgell 2004
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "vfs_posix.h"
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/* UNIX filetype mappings. */
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#define UNIX_TYPE_FILE 0
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#define UNIX_TYPE_DIR 1
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#define UNIX_TYPE_SYMLINK 2
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#define UNIX_TYPE_CHARDEV 3
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#define UNIX_TYPE_BLKDEV 4
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#define UNIX_TYPE_FIFO 5
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#define UNIX_TYPE_SOCKET 6
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#define UNIX_TYPE_UNKNOWN 0xFFFFFFFF
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/****************************************************************************
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Change a unix mode to a dos mode.
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****************************************************************************/
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static uint32_t dos_mode_from_stat(struct pvfs_state *pvfs, struct stat *st)
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{
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int result = 0;
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if ((st->st_mode & S_IWUSR) == 0)
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result |= FILE_ATTRIBUTE_READONLY;
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if ((pvfs->flags & PVFS_FLAG_MAP_ARCHIVE) && ((st->st_mode & S_IXUSR) != 0))
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result |= FILE_ATTRIBUTE_ARCHIVE;
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if ((pvfs->flags & PVFS_FLAG_MAP_SYSTEM) && ((st->st_mode & S_IXGRP) != 0))
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result |= FILE_ATTRIBUTE_SYSTEM;
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if ((pvfs->flags & PVFS_FLAG_MAP_HIDDEN) && ((st->st_mode & S_IXOTH) != 0))
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result |= FILE_ATTRIBUTE_HIDDEN;
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if (S_ISDIR(st->st_mode))
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result = FILE_ATTRIBUTE_DIRECTORY | (result & FILE_ATTRIBUTE_READONLY);
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return result;
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}
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/*
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fill in the dos file attributes for a file
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*/
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NTSTATUS pvfs_fill_dos_info(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd)
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{
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/* make directories appear as size 0 with 1 link */
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if (S_ISDIR(name->st.st_mode)) {
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name->st.st_size = 0;
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name->st.st_nlink = 1;
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}
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/* for now just use the simple samba mapping */
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unix_to_nt_time(&name->dos.create_time, name->st.st_ctime);
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unix_to_nt_time(&name->dos.access_time, name->st.st_atime);
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unix_to_nt_time(&name->dos.write_time, name->st.st_mtime);
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unix_to_nt_time(&name->dos.change_time, name->st.st_ctime);
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#ifdef HAVE_STAT_TV_NSEC
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name->dos.create_time += name->st.st_ctim.tv_nsec / 100;
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name->dos.access_time += name->st.st_atim.tv_nsec / 100;
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name->dos.write_time += name->st.st_mtim.tv_nsec / 100;
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name->dos.change_time += name->st.st_ctim.tv_nsec / 100;
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#endif
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name->dos.attrib = dos_mode_from_stat(pvfs, &name->st);
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name->dos.alloc_size = pvfs_round_alloc_size(pvfs, name->st.st_size);
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name->dos.nlink = name->st.st_nlink;
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name->dos.ea_size = 4;
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name->dos.file_id = (((uint64_t)name->st.st_dev)<<32) | name->st.st_ino;
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name->dos.flags = 0;
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return pvfs_dosattrib_load(pvfs, name, fd);
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}
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/*
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return a set of unix file permissions for a new file or directory
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*/
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mode_t pvfs_fileperms(struct pvfs_state *pvfs, uint32_t attrib)
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{
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mode_t mode = S_IRUSR;
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if (attrib & FILE_ATTRIBUTE_DIRECTORY) {
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mode |= S_IXUSR;
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}
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if (!(attrib & FILE_ATTRIBUTE_READONLY) ||
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(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
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mode |= S_IWUSR;
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}
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if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) {
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if ((attrib & FILE_ATTRIBUTE_ARCHIVE) &&
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(pvfs->flags & PVFS_FLAG_MAP_ARCHIVE)) {
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mode |= S_IXUSR;
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}
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if ((attrib & FILE_ATTRIBUTE_SYSTEM) &&
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(pvfs->flags & PVFS_FLAG_MAP_SYSTEM)) {
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mode |= S_IXGRP;
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}
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if ((attrib & FILE_ATTRIBUTE_HIDDEN) &&
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(pvfs->flags & PVFS_FLAG_MAP_HIDDEN)) {
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mode |= S_IXOTH;
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}
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}
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return mode;
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}
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