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49ca690b4b
This patch introduces
struct stat_ex {
dev_t st_ex_dev;
ino_t st_ex_ino;
mode_t st_ex_mode;
nlink_t st_ex_nlink;
uid_t st_ex_uid;
gid_t st_ex_gid;
dev_t st_ex_rdev;
off_t st_ex_size;
struct timespec st_ex_atime;
struct timespec st_ex_mtime;
struct timespec st_ex_ctime;
struct timespec st_ex_btime; /* birthtime */
blksize_t st_ex_blksize;
blkcnt_t st_ex_blocks;
};
typedef struct stat_ex SMB_STRUCT_STAT;
It is really large because due to the friendly libc headers playing macro
tricks with fields like st_ino, so I renamed them to st_ex_xxx.
Why this change? To support birthtime, we already have quite a few #ifdef's at
places where it does not really belong. With a stat struct that we control, we
can consolidate the nanosecond timestamps and the birthtime deep in the VFS
stat calls.
At this moment it is triggered by a request to support the birthtime field for
GPFS. GPFS does not extend the system level struct stat, but instead has a
separate call that gets us the additional information beyond posix. Without
being able to do that within the VFS stat calls, that support would have to be
scattered around the main smbd code.
It will very likely break all the onefs modules, but I think the changes will
be reasonably easy to do.
343 lines
14 KiB
C
343 lines
14 KiB
C
/*
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Unix SMB/CIFS implementation.
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SMB parameters and setup
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Copyright (C) Andrew Tridgell 1992-1999
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Copyright (C) John H Terpstra 1996-1999
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Copyright (C) Luke Kenneth Casson Leighton 1996-1999
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Copyright (C) Paul Ashton 1998 - 1999
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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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SMB_MACROS_H
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#define _SMB_MACROS_H
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/* Misc bit macros */
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#define BOOLSTR(b) ((b) ? "Yes" : "No")
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#define BITSETW(ptr,bit) ((SVAL(ptr,0) & (1<<(bit)))!=0)
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/* for readability... */
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#define IS_DOS_READONLY(test_mode) (((test_mode) & aRONLY) != 0)
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#define IS_DOS_DIR(test_mode) (((test_mode) & aDIR) != 0)
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#define IS_DOS_ARCHIVE(test_mode) (((test_mode) & aARCH) != 0)
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#define IS_DOS_SYSTEM(test_mode) (((test_mode) & aSYSTEM) != 0)
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#define IS_DOS_HIDDEN(test_mode) (((test_mode) & aHIDDEN) != 0)
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#define SMB_WARN(condition, message) \
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((condition) ? (void)0 : \
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DEBUG(0, ("WARNING: %s: %s\n", #condition, message)))
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#define SMB_ASSERT_ARRAY(a,n) SMB_ASSERT((sizeof(a)/sizeof((a)[0])) >= (n))
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/* these are useful macros for checking validity of handles */
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#define IS_IPC(conn) ((conn) && (conn)->ipc)
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#define IS_PRINT(conn) ((conn) && (conn)->printer)
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/* you must add the following extern declaration to files using this macro
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* (do not add it to the macro as that causes nested extern declaration warnings)
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* extern struct current_user current_user;
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*/
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#define FSP_BELONGS_CONN(fsp,conn) do {\
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if (!((fsp) && (conn) && ((conn)==(fsp)->conn) && (current_user.vuid==(fsp)->vuid))) \
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return ERROR_NT(NT_STATUS_INVALID_HANDLE); \
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} while(0)
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#define CHECK_READ(fsp,req) (((fsp)->fh->fd != -1) && ((fsp)->can_read || \
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((req->flags2 & FLAGS2_READ_PERMIT_EXECUTE) && \
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(fsp->access_mask & FILE_EXECUTE))))
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#define CHECK_WRITE(fsp) ((fsp)->can_write && ((fsp)->fh->fd != -1))
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#define ERROR_WAS_LOCK_DENIED(status) (NT_STATUS_EQUAL((status), NT_STATUS_LOCK_NOT_GRANTED) || \
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NT_STATUS_EQUAL((status), NT_STATUS_FILE_LOCK_CONFLICT) )
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/* the service number for the [globals] defaults */
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#define GLOBAL_SECTION_SNUM (-1)
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/* translates a connection number into a service number */
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#define SNUM(conn) ((conn)?(conn)->params->service:GLOBAL_SECTION_SNUM)
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/* access various service details */
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#define SERVICE(snum) (lp_servicename(snum))
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#define PRINTERNAME(snum) (lp_printername(snum))
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#define CAN_WRITE(conn) (!conn->read_only)
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#define VALID_SNUM(snum) (lp_snum_ok(snum))
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#define GUEST_OK(snum) (VALID_SNUM(snum) && lp_guest_ok(snum))
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#define GUEST_ONLY(snum) (VALID_SNUM(snum) && lp_guest_only(snum))
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#define CAN_SETDIR(snum) (!lp_no_set_dir(snum))
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#define CAN_PRINT(conn) ((conn) && lp_print_ok(SNUM(conn)))
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#define MAP_HIDDEN(conn) ((conn) && lp_map_hidden(SNUM(conn)))
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#define MAP_SYSTEM(conn) ((conn) && lp_map_system(SNUM(conn)))
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#define MAP_ARCHIVE(conn) ((conn) && lp_map_archive(SNUM(conn)))
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#define IS_HIDDEN_PATH(conn,path) ((conn) && is_in_path((path),(conn)->hide_list,(conn)->case_sensitive))
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#define IS_VETO_PATH(conn,path) ((conn) && is_in_path((path),(conn)->veto_list,(conn)->case_sensitive))
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#define IS_VETO_OPLOCK_PATH(conn,path) ((conn) && is_in_path((path),(conn)->veto_oplock_list,(conn)->case_sensitive))
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/*
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* Used by the stat cache code to check if a returned
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* stat structure is valid.
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*/
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#define VALID_STAT(st) ((st).st_ex_nlink != 0)
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#define VALID_STAT_OF_DIR(st) (VALID_STAT(st) && S_ISDIR((st).st_ex_mode))
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#define SET_STAT_INVALID(st) ((st).st_ex_nlink = 0)
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/* Macros to get at offsets within smb_lkrng and smb_unlkrng
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structures. We cannot define these as actual structures
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due to possible differences in structure packing
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on different machines/compilers. */
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#define SMB_LPID_OFFSET(indx) (10 * (indx))
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#define SMB_LKOFF_OFFSET(indx) ( 2 + (10 * (indx)))
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#define SMB_LKLEN_OFFSET(indx) ( 6 + (10 * (indx)))
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#define SMB_LARGE_LPID_OFFSET(indx) (20 * (indx))
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#define SMB_LARGE_LKOFF_OFFSET_HIGH(indx) (4 + (20 * (indx)))
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#define SMB_LARGE_LKOFF_OFFSET_LOW(indx) (8 + (20 * (indx)))
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#define SMB_LARGE_LKLEN_OFFSET_HIGH(indx) (12 + (20 * (indx)))
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#define SMB_LARGE_LKLEN_OFFSET_LOW(indx) (16 + (20 * (indx)))
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#define ERROR_DOS(class,code) error_packet(outbuf,class,code,NT_STATUS_OK,__LINE__,__FILE__)
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#define ERROR_NT(status) error_packet(outbuf,0,0,status,__LINE__,__FILE__)
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#define ERROR_FORCE_NT(status) error_packet(outbuf,-1,-1,status,__LINE__,__FILE__)
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#define ERROR_BOTH(status,class,code) error_packet(outbuf,class,code,status,__LINE__,__FILE__)
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#define reply_nterror(req,status) reply_nt_error(req,status,__LINE__,__FILE__)
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#define reply_force_nterror(req,status) reply_force_nt_error(req,status,__LINE__,__FILE__)
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#define reply_doserror(req,eclass,ecode) reply_dos_error(req,eclass,ecode,__LINE__,__FILE__)
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#define reply_botherror(req,status,eclass,ecode) reply_both_error(req,eclass,ecode,status,__LINE__,__FILE__)
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#define reply_unixerror(req,defclass,deferror) reply_unix_error(req,defclass,deferror,NT_STATUS_OK,__LINE__,__FILE__)
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#if 0
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/* defined in IDL */
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/* these are the datagram types */
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#define DGRAM_DIRECT_UNIQUE 0x10
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#endif
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#define SMB_ROUNDUP(x,r) ( ((x)%(r)) ? ( (((x)+(r))/(r))*(r) ) : (x))
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/* Extra macros added by Ying Chen at IBM - speed increase by inlining. */
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#define smb_buf(buf) (((char *)(buf)) + smb_size + CVAL(buf,smb_wct)*2)
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#define smb_buflen(buf) (SVAL(buf,smb_vwv0 + (int)CVAL(buf, smb_wct)*2))
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/* the remaining number of bytes in smb buffer 'buf' from pointer 'p'. */
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#define smb_bufrem(buf, p) (smb_buflen(buf)-PTR_DIFF(p, smb_buf(buf)))
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#define smbreq_bufrem(req, p) (req->buflen - PTR_DIFF(p, req->buf))
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/* Note that chain_size must be available as an extern int to this macro. */
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#define smb_offset(p,buf) (PTR_DIFF(p,buf+4))
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#define smb_len(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|((PVAL(buf,1)&1)<<16))
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#define _smb_setlen(buf,len) do { buf[0] = 0; buf[1] = ((len)&0x10000)>>16; \
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buf[2] = ((len)&0xFF00)>>8; buf[3] = (len)&0xFF; } while (0)
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#define smb_len_large(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|(PVAL(buf,1)<<16))
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#define _smb_setlen_large(buf,len) do { buf[0] = 0; buf[1] = ((len)&0xFF0000)>>16; \
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buf[2] = ((len)&0xFF00)>>8; buf[3] = (len)&0xFF; } while (0)
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#define ENCRYPTION_REQUIRED(conn) ((conn) ? ((conn)->encrypt_level == Required) : false)
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#define IS_CONN_ENCRYPTED(conn) ((conn) ? (conn)->encrypted_tid : false)
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/*******************************************************************
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find the difference in milliseconds between two struct timeval
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values
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********************************************************************/
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#define TvalDiff(tvalold,tvalnew) \
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(((tvalnew)->tv_sec - (tvalold)->tv_sec)*1000 + \
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((int)(tvalnew)->tv_usec - (int)(tvalold)->tv_usec)/1000)
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/****************************************************************************
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true if two IPv4 addresses are equal
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****************************************************************************/
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#define ip_equal_v4(ip1,ip2) ((ip1).s_addr == (ip2).s_addr)
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/*****************************************************************
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splits out the last subkey of a key
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*****************************************************************/
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#define reg_get_subkey(full_keyname, key_name, subkey_name) \
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split_at_last_component(full_keyname, key_name, '\\', subkey_name)
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/****************************************************************************
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Return True if the offset is at zero.
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****************************************************************************/
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#define dptr_zero(buf) (IVAL(buf,1) == 0)
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/*******************************************************************
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copy an IP address from one buffer to another
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********************************************************************/
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#define putip(dest,src) memcpy(dest,src,4)
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/*******************************************************************
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Return True if a server has CIFS UNIX capabilities.
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********************************************************************/
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#define SERVER_HAS_UNIX_CIFS(c) ((c)->capabilities & CAP_UNIX)
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/****************************************************************************
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Make a filename into unix format.
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****************************************************************************/
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#define IS_DIRECTORY_SEP(c) ((c) == '\\' || (c) == '/')
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#define unix_format(fname) string_replace(fname,'\\','/')
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#define unix_format_w(fname) string_replace_w(fname, UCS2_CHAR('\\'), UCS2_CHAR('/'))
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/****************************************************************************
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Make a file into DOS format.
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****************************************************************************/
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#define dos_format(fname) string_replace(fname,'/','\\')
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/*****************************************************************************
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Check to see if we are a DC for this domain
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*****************************************************************************/
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#define IS_DC (lp_server_role()==ROLE_DOMAIN_PDC || lp_server_role()==ROLE_DOMAIN_BDC)
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/*****************************************************************************
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Safe allocation macros.
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*****************************************************************************/
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#define SMB_MALLOC_ARRAY(type,count) (type *)malloc_array(sizeof(type),(count))
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#define SMB_MEMALIGN_ARRAY(type,align,count) (type *)memalign_array(sizeof(type),align,(count))
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#define SMB_REALLOC(p,s) Realloc((p),(s),True) /* Always frees p on error or s == 0 */
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#define SMB_REALLOC_KEEP_OLD_ON_ERROR(p,s) Realloc((p),(s),False) /* Never frees p on error or s == 0 */
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#define SMB_REALLOC_ARRAY(p,type,count) (type *)realloc_array((p),sizeof(type),(count),True) /* Always frees p on error or s == 0 */
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#define SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(p,type,count) (type *)realloc_array((p),sizeof(type),(count),False) /* Never frees p on error or s == 0 */
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#define SMB_CALLOC_ARRAY(type,count) (type *)calloc_array(sizeof(type),(count))
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#define SMB_XMALLOC_P(type) (type *)smb_xmalloc_array(sizeof(type),1)
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#define SMB_XMALLOC_ARRAY(type,count) (type *)smb_xmalloc_array(sizeof(type),(count))
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/* The new talloc is paranoid malloc checker safe. */
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#if 0
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Disable these now we have checked all code paths and ensured
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NULL returns on zero request. JRA.
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#define TALLOC(ctx, size) talloc_zeronull(ctx, size, __location__)
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#define TALLOC_P(ctx, type) (type *)talloc_zeronull(ctx, sizeof(type), #type)
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#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array_zeronull(ctx, sizeof(type), count, #type)
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#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup_zeronull(ctx, ptr, size, __location__)
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#define TALLOC_ZERO(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
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#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero_zeronull(ctx, sizeof(type), #type)
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#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array_zeronull(ctx, sizeof(type), count, #type)
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#define TALLOC_SIZE(ctx, size) talloc_zeronull(ctx, size, __location__)
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#define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
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#else
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#define TALLOC(ctx, size) talloc_named_const(ctx, size, __location__)
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#define TALLOC_P(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
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#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array(ctx, sizeof(type), count, #type)
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#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup(ctx, ptr, size, __location__)
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#define TALLOC_ZERO(ctx, size) _talloc_zero(ctx, size, __location__)
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#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
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#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array(ctx, sizeof(type), count, #type)
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#define TALLOC_SIZE(ctx, size) talloc_named_const(ctx, size, __location__)
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#define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero(ctx, size, __location__)
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#endif
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#define TALLOC_REALLOC(ctx, ptr, count) _talloc_realloc(ctx, ptr, count, __location__)
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#define TALLOC_REALLOC_ARRAY(ctx, ptr, type, count) (type *)_talloc_realloc_array(ctx, ptr, sizeof(type), count, #type)
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#define talloc_destroy(ctx) talloc_free(ctx)
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#ifndef TALLOC_FREE
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#define TALLOC_FREE(ctx) do { talloc_free(ctx); ctx=NULL; } while(0)
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#endif
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/* only define PARANOID_MALLOC_CHECKER with --enable-developer */
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#if defined(DEVELOPER)
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# define PARANOID_MALLOC_CHECKER 1
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#endif
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#if defined(PARANOID_MALLOC_CHECKER)
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#define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem_((ps),sizeof(type),(count))
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/* Get medieval on our ass about malloc.... */
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/* Restrictions on malloc/realloc/calloc. */
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#ifdef malloc
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#undef malloc
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#endif
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#define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
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#ifdef realloc
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#undef realloc
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#endif
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#define realloc(p,s) __ERROR_DONT_USE_REALLOC_DIRECTLY
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#ifdef calloc
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#undef calloc
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#endif
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#define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
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#ifdef strndup
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#undef strndup
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#endif
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#define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY
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#ifdef strdup
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#undef strdup
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#endif
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#define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY
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#define SMB_MALLOC(s) malloc_(s)
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#define SMB_MALLOC_P(type) (type *)malloc_(sizeof(type))
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#define SMB_STRDUP(s) smb_xstrdup(s)
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#define SMB_STRNDUP(s,n) smb_xstrndup(s,n)
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#else
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#define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem((ps),sizeof(type),(count))
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/* Regular malloc code. */
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#define SMB_MALLOC(s) malloc(s)
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#define SMB_MALLOC_P(type) (type *)malloc(sizeof(type))
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#define SMB_STRDUP(s) strdup(s)
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#define SMB_STRNDUP(s,n) strndup(s,n)
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#endif
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#define ADD_TO_ARRAY(mem_ctx, type, elem, array, num) \
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do { \
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*(array) = ((mem_ctx) != NULL) ? \
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TALLOC_REALLOC_ARRAY(mem_ctx, (*(array)), type, (*(num))+1) : \
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SMB_REALLOC_ARRAY((*(array)), type, (*(num))+1); \
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SMB_ASSERT((*(array)) != NULL); \
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(*(array))[*(num)] = (elem); \
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(*(num)) += 1; \
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} while (0)
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#define ADD_TO_LARGE_ARRAY(mem_ctx, type, elem, array, num, size) \
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add_to_large_array((mem_ctx), sizeof(type), &(elem), (void *)(array), (num), (size));
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#ifndef toupper_ascii_fast
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/* Warning - this must only be called with 0 <= c < 128. IT WILL
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* GIVE GARBAGE if c > 128 or c < 0. JRA.
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*/
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extern const char toupper_ascii_fast_table[];
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#define toupper_ascii_fast(c) toupper_ascii_fast_table[(unsigned int)(c)];
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#endif
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#endif /* _SMB_MACROS_H */
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