mirror of
https://github.com/samba-team/samba.git
synced 2025-10-22 07:33:16 +03:00
d92ad9f307
(recently Linux systems support this, allowing us to support the full resolution in NTTIME) - use nanosecond resolution in the posix backend if available - moved the configure tests and list of object files for the posix backend into ntvfs/posix/ to keep them more neatlly separated.
156 lines
4.2 KiB
C
156 lines
4.2 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 "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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Return the major devicenumber for UNIX extensions.
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*/
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static uint32_t unix_dev_major(dev_t dev)
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{
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#if defined(HAVE_DEVICE_MAJOR_FN)
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return (uint32)major(dev);
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#else
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return (uint32)(dev >> 8);
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#endif
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}
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/*
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Return the minor devicenumber for UNIX extensions.
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*/
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static uint32_t unix_dev_minor(dev_t dev)
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{
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#if defined(HAVE_DEVICE_MINOR_FN)
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return (uint32)minor(dev);
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#else
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return (uint32)(dev & 0xff);
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#endif
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}
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/*
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Return the filetype for UNIX extensions
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*/
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static uint32_t unix_filetype(mode_t mode)
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{
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if (S_ISREG(mode)) return UNIX_TYPE_FILE;
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if (S_ISDIR(mode)) return UNIX_TYPE_DIR;
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#ifdef S_ISLNK
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if (S_ISLNK(mode)) return UNIX_TYPE_SYMLINK;
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#endif
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#ifdef S_ISCHR
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if (S_ISCHR(mode)) return UNIX_TYPE_CHARDEV;
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#endif
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#ifdef S_ISBLK
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if (S_ISBLK(mode)) return UNIX_TYPE_BLKDEV;
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#endif
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#ifdef S_ISFIFO
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if (S_ISFIFO(mode)) return UNIX_TYPE_FIFO;
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#endif
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#ifdef S_ISSOCK
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if (S_ISSOCK(mode)) return UNIX_TYPE_SOCKET;
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#endif
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DEBUG(0,("unix_filetype: unknown filetype %u", (unsigned)mode));
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return UNIX_TYPE_UNKNOWN;
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}
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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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#if defined (HAVE_STAT_ST_BLOCKS) && defined (HAVE_STAT_ST_BLKSIZE)
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if (st->st_size > st->st_blocks * (off_t)st->st_blksize) {
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result |= FILE_ATTRIBUTE_SPARSE;
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}
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#endif
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if (!(result &
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(FILE_ATTRIBUTE_READONLY|
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FILE_ATTRIBUTE_ARCHIVE|
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FILE_ATTRIBUTE_SYSTEM|
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FILE_ATTRIBUTE_HIDDEN|
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FILE_ATTRIBUTE_DIRECTORY))) {
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result |= FILE_ATTRIBUTE_NORMAL;
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}
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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)
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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_mtime);
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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_mtim.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 = name->st.st_size;
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name->dos.nlink = name->st.st_nlink;
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name->dos.ea_size = 0;
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name->dos.file_id = (((uint64_t)name->st.st_dev)<<32) | name->st.st_ino;
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return NT_STATUS_OK;
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}
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