| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 | SMB parameters and setup
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| 4 | Copyright (C) Andrew Tridgell 1992-1999
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| 5 | Copyright (C) John H Terpstra 1996-1999
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| 6 | Copyright (C) Luke Kenneth Casson Leighton 1996-1999
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| 7 | Copyright (C) Paul Ashton 1998 - 1999
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| 8 |
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| 9 | This program is free software; you can redistribute it and/or modify
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| 10 | it under the terms of the GNU General Public License as published by
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| 11 | the Free Software Foundation; either version 2 of the License, or
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| 12 | (at your option) any later version.
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| 13 |
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| 14 | This program is distributed in the hope that it will be useful,
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| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | GNU General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU General Public License
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| 20 | along with this program; if not, write to the Free Software
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| 21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 22 | */
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| 23 |
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| 24 | #ifndef _SMB_MACROS_H
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| 25 | #define _SMB_MACROS_H
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| 26 |
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| 27 | /* Misc bit macros */
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| 28 | #define BOOLSTR(b) ((b) ? "Yes" : "No")
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| 29 | #define BITSETW(ptr,bit) ((SVAL(ptr,0) & (1<<(bit)))!=0)
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| 30 |
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| 31 | /* for readability... */
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| 32 | #define IS_DOS_READONLY(test_mode) (((test_mode) & aRONLY) != 0)
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| 33 | #define IS_DOS_DIR(test_mode) (((test_mode) & aDIR) != 0)
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| 34 | #define IS_DOS_ARCHIVE(test_mode) (((test_mode) & aARCH) != 0)
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| 35 | #define IS_DOS_SYSTEM(test_mode) (((test_mode) & aSYSTEM) != 0)
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| 36 | #define IS_DOS_HIDDEN(test_mode) (((test_mode) & aHIDDEN) != 0)
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| 37 |
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| 38 | #ifndef SAFE_FREE /* Oh no this is also defined in tdb.h */
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| 39 |
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| 40 | /**
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| 41 | * Free memory if the pointer and zero the pointer.
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| 42 | *
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| 43 | * @note You are explicitly allowed to pass NULL pointers -- they will
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| 44 | * always be ignored.
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| 45 | **/
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| 46 | #define SAFE_FREE(x) do { if ((x) != NULL) {free(x); x=NULL;} } while(0)
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| 47 | #endif
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| 48 |
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| 49 | /* assert macros */
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| 50 | #ifdef DEVELOPER
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| 51 | #define SMB_ASSERT(b) ( (b) ? (void)0 : \
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| 52 | (DEBUG(0,("PANIC: assert failed at %s(%d)\n", \
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| 53 | __FILE__, __LINE__)), smb_panic("assert failed")))
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| 54 | #else
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| 55 | /* redefine the assert macro for non-developer builds */
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| 56 | #define SMB_ASSERT(b) ( (b) ? (void)0 : \
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| 57 | (DEBUG(0,("PANIC: assert failed at %s(%d)\n", __FILE__, __LINE__))))
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| 58 | #endif
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| 59 |
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| 60 | #define SMB_WARN(condition, message) \
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| 61 | ((condition) ? (void)0 : \
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| 62 | DEBUG(0, ("WARNING: %s: %s\n", #condition, message)))
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| 63 |
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| 64 | #define SMB_ASSERT_ARRAY(a,n) SMB_ASSERT((sizeof(a)/sizeof((a)[0])) >= (n))
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| 65 |
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| 66 | /* these are useful macros for checking validity of handles */
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| 67 | #define IS_IPC(conn) ((conn) && (conn)->ipc)
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| 68 | #define IS_PRINT(conn) ((conn) && (conn)->printer)
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| 69 | /* you must add the following extern declaration to files using this macro
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| 70 | * (do not add it to the macro as that causes nested extern declaration warnings)
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| 71 | * extern struct current_user current_user;
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| 72 | */
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| 73 | #define FSP_BELONGS_CONN(fsp,conn) do {\
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| 74 | if (!((fsp) && (conn) && ((conn)==(fsp)->conn) && (current_user.vuid==(fsp)->vuid))) \
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| 75 | return ERROR_NT(NT_STATUS_INVALID_HANDLE); \
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| 76 | } while(0)
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| 77 |
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| 78 | #define FNUM_OK(fsp,c) ((fsp) && !(fsp)->is_directory && (c)==(fsp)->conn && current_user.vuid==(fsp)->vuid)
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| 79 |
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| 80 | /* you must add the following extern declaration to files using this macro
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| 81 | * (do not add it to the macro as that causes nested extern declaration warnings)
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| 82 | * extern struct current_user current_user;
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| 83 | */
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| 84 | #define CHECK_FSP(fsp,conn) do {\
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| 85 | if (!(fsp) || !(conn)) \
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| 86 | return ERROR_NT(NT_STATUS_INVALID_HANDLE); \
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| 87 | else if (((conn) != (fsp)->conn) || current_user.vuid != (fsp)->vuid) \
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| 88 | return ERROR_NT(NT_STATUS_INVALID_HANDLE); \
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| 89 | else if ((fsp)->is_directory) \
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| 90 | return ERROR_NT(NT_STATUS_INVALID_DEVICE_REQUEST); \
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| 91 | else if ((fsp)->fh->fd == -1) \
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| 92 | return ERROR_NT(NT_STATUS_ACCESS_DENIED); \
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| 93 | (fsp)->num_smb_operations++;\
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| 94 | } while(0)
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| 95 |
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| 96 | #define CHECK_READ(fsp,inbuf) (((fsp)->fh->fd != -1) && ((fsp)->can_read || \
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| 97 | ((SVAL((inbuf),smb_flg2) & FLAGS2_READ_PERMIT_EXECUTE) && \
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| 98 | (fsp->access_mask & FILE_EXECUTE))))
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| 99 |
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| 100 | #define CHECK_WRITE(fsp) ((fsp)->can_write && ((fsp)->fh->fd != -1))
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| 101 |
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| 102 | #define ERROR_WAS_LOCK_DENIED(status) (NT_STATUS_EQUAL((status), NT_STATUS_LOCK_NOT_GRANTED) || \
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| 103 | NT_STATUS_EQUAL((status), NT_STATUS_FILE_LOCK_CONFLICT) )
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| 104 |
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| 105 | /* the service number for the [globals] defaults */
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| 106 | #define GLOBAL_SECTION_SNUM (-1)
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| 107 | /* translates a connection number into a service number */
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| 108 | #define SNUM(conn) ((conn)?(conn)->params->service:GLOBAL_SECTION_SNUM)
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| 109 |
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| 110 |
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| 111 | /* access various service details */
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| 112 | #define SERVICE(snum) (lp_servicename(snum))
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| 113 | #define PRINTERNAME(snum) (lp_printername(snum))
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| 114 | #define CAN_WRITE(conn) (!conn->read_only)
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| 115 | #define VALID_SNUM(snum) (lp_snum_ok(snum))
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| 116 | #define GUEST_OK(snum) (VALID_SNUM(snum) && lp_guest_ok(snum))
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| 117 | #define GUEST_ONLY(snum) (VALID_SNUM(snum) && lp_guest_only(snum))
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| 118 | #define CAN_SETDIR(snum) (!lp_no_set_dir(snum))
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| 119 | #define CAN_PRINT(conn) ((conn) && lp_print_ok(SNUM(conn)))
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| 120 | #define MAP_HIDDEN(conn) ((conn) && lp_map_hidden(SNUM(conn)))
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| 121 | #define MAP_SYSTEM(conn) ((conn) && lp_map_system(SNUM(conn)))
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| 122 | #define MAP_ARCHIVE(conn) ((conn) && lp_map_archive(SNUM(conn)))
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| 123 | #define IS_HIDDEN_PATH(conn,path) ((conn) && is_in_path((path),(conn)->hide_list,(conn)->case_sensitive))
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| 124 | #define IS_VETO_PATH(conn,path) ((conn) && is_in_path((path),(conn)->veto_list,(conn)->case_sensitive))
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| 125 | #define IS_VETO_OPLOCK_PATH(conn,path) ((conn) && is_in_path((path),(conn)->veto_oplock_list,(conn)->case_sensitive))
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| 126 |
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| 127 | /*
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| 128 | * Used by the stat cache code to check if a returned
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| 129 | * stat structure is valid.
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| 130 | */
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| 131 |
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| 132 | #define VALID_STAT(st) ((st).st_nlink != 0)
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| 133 | #define VALID_STAT_OF_DIR(st) (VALID_STAT(st) && S_ISDIR((st).st_mode))
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| 134 | #define SET_STAT_INVALID(st) ((st).st_nlink = 0)
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| 135 |
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| 136 | #ifndef MIN
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| 137 | #define MIN(a,b) ((a)<(b)?(a):(b))
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| 138 | #endif
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| 139 | #ifndef MAX
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| 140 | #define MAX(a,b) ((a)>(b)?(a):(b))
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| 141 | #endif
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| 142 |
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| 143 | #ifndef ABS
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| 144 | #define ABS(a) ((a)>0?(a):(-(a)))
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| 145 | #endif
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| 146 |
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| 147 | /* Macros to get at offsets within smb_lkrng and smb_unlkrng
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| 148 | structures. We cannot define these as actual structures
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| 149 | due to possible differences in structure packing
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| 150 | on different machines/compilers. */
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| 151 |
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| 152 | #define SMB_LPID_OFFSET(indx) (10 * (indx))
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| 153 | #define SMB_LKOFF_OFFSET(indx) ( 2 + (10 * (indx)))
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| 154 | #define SMB_LKLEN_OFFSET(indx) ( 6 + (10 * (indx)))
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| 155 | #define SMB_LARGE_LPID_OFFSET(indx) (20 * (indx))
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| 156 | #define SMB_LARGE_LKOFF_OFFSET_HIGH(indx) (4 + (20 * (indx)))
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| 157 | #define SMB_LARGE_LKOFF_OFFSET_LOW(indx) (8 + (20 * (indx)))
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| 158 | #define SMB_LARGE_LKLEN_OFFSET_HIGH(indx) (12 + (20 * (indx)))
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| 159 | #define SMB_LARGE_LKLEN_OFFSET_LOW(indx) (16 + (20 * (indx)))
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| 160 |
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| 161 | /* Macro to test if an error has been cached for this fnum */
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| 162 | #define HAS_CACHED_ERROR(fsp) ((fsp)->wbmpx_ptr && \
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| 163 | (fsp)->wbmpx_ptr->wr_discard)
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| 164 | /* Macro to turn the cached error into an error packet */
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| 165 | #define CACHED_ERROR(fsp) cached_error_packet(outbuf,fsp,__LINE__,__FILE__)
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| 166 |
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| 167 | #define ERROR_DOS(class,code) error_packet(outbuf,class,code,NT_STATUS_OK,__LINE__,__FILE__)
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| 168 | #define ERROR_NT(status) error_packet(outbuf,0,0,status,__LINE__,__FILE__)
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| 169 | #define ERROR_OPEN(status) error_open(outbuf,status,__LINE__,__FILE__)
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| 170 | #define ERROR_FORCE_NT(status) error_packet(outbuf,-1,-1,status,__LINE__,__FILE__)
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| 171 | #define ERROR_BOTH(status,class,code) error_packet(outbuf,class,code,status,__LINE__,__FILE__)
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| 172 |
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| 173 | /* this is how errors are generated */
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| 174 | #define UNIXERROR(defclass,deferror) unix_error_packet(outbuf,defclass,deferror,NT_STATUS_OK,__LINE__,__FILE__)
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| 175 |
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| 176 | /* these are the datagram types */
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| 177 | #define DGRAM_DIRECT_UNIQUE 0x10
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| 178 |
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| 179 | #define SMB_ROUNDUP(x,r) ( ((x)%(r)) ? ( (((x)+(r))/(r))*(r) ) : (x))
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| 180 |
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| 181 | /* Extra macros added by Ying Chen at IBM - speed increase by inlining. */
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| 182 | #define smb_buf(buf) (((char *)(buf)) + smb_size + CVAL(buf,smb_wct)*2)
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| 183 | #define smb_buflen(buf) (SVAL(buf,smb_vwv0 + (int)CVAL(buf, smb_wct)*2))
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| 184 |
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| 185 | /* the remaining number of bytes in smb buffer 'buf' from pointer 'p'. */
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| 186 | #define smb_bufrem(buf, p) (smb_buflen(buf)-PTR_DIFF(p, smb_buf(buf)))
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| 187 |
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| 188 | /* Note that chain_size must be available as an extern int to this macro. */
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| 189 | #define smb_offset(p,buf) (PTR_DIFF(p,buf+4) + chain_size)
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| 190 |
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| 191 | #define smb_len(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|((PVAL(buf,1)&1)<<16))
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| 192 | #define _smb_setlen(buf,len) do { buf[0] = 0; buf[1] = (len&0x10000)>>16; \
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| 193 | buf[2] = (len&0xFF00)>>8; buf[3] = len&0xFF; } while (0)
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| 194 |
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| 195 | /*******************************************************************
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| 196 | find the difference in milliseconds between two struct timeval
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| 197 | values
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| 198 | ********************************************************************/
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| 199 |
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| 200 | #define TvalDiff(tvalold,tvalnew) \
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| 201 | (((tvalnew)->tv_sec - (tvalold)->tv_sec)*1000 + \
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| 202 | ((int)(tvalnew)->tv_usec - (int)(tvalold)->tv_usec)/1000)
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| 203 |
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| 204 | /****************************************************************************
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| 205 | true if two IP addresses are equal
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| 206 | ****************************************************************************/
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| 207 |
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| 208 | #define ip_equal(ip1,ip2) ((ip1).s_addr == (ip2).s_addr)
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| 209 | #define ip_service_equal(ip1,ip2) ( ((ip1).ip.s_addr == (ip2).ip.s_addr) && ((ip1).port == (ip2).port) )
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| 210 |
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| 211 | /*****************************************************************
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| 212 | splits out the last subkey of a key
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| 213 | *****************************************************************/
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| 214 |
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| 215 | #define reg_get_subkey(full_keyname, key_name, subkey_name) \
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| 216 | split_at_last_component(full_keyname, key_name, '\\', subkey_name)
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| 217 |
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| 218 | /****************************************************************************
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| 219 | Return True if the offset is at zero.
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| 220 | ****************************************************************************/
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| 221 |
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| 222 | #define dptr_zero(buf) (IVAL(buf,1) == 0)
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| 223 |
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| 224 | /*******************************************************************
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| 225 | copy an IP address from one buffer to another
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| 226 | ********************************************************************/
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| 227 |
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| 228 | #define putip(dest,src) memcpy(dest,src,4)
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| 229 |
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| 230 | /*******************************************************************
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| 231 | Return True if a server has CIFS UNIX capabilities.
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| 232 | ********************************************************************/
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| 233 |
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| 234 | #define SERVER_HAS_UNIX_CIFS(c) ((c)->capabilities & CAP_UNIX)
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| 235 |
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| 236 | /****************************************************************************
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| 237 | Make a filename into unix format.
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| 238 | ****************************************************************************/
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| 239 |
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| 240 | #define IS_DIRECTORY_SEP(c) ((c) == '\\' || (c) == '/')
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| 241 | #define unix_format(fname) string_replace(fname,'\\','/')
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| 242 | #define unix_format_w(fname) string_replace_w(fname, UCS2_CHAR('\\'), UCS2_CHAR('/'))
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| 243 |
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| 244 | /****************************************************************************
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| 245 | Make a file into DOS format.
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| 246 | ****************************************************************************/
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| 247 |
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| 248 | #define dos_format(fname) string_replace(fname,'/','\\')
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| 249 |
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| 250 | /*****************************************************************************
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| 251 | Check to see if we are a DC for this domain
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| 252 | *****************************************************************************/
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| 253 |
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| 254 | #define IS_DC (lp_server_role()==ROLE_DOMAIN_PDC || lp_server_role()==ROLE_DOMAIN_BDC)
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| 255 |
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| 256 | /*****************************************************************************
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| 257 | Safe allocation macros.
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| 258 | *****************************************************************************/
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| 259 |
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| 260 | #define SMB_MALLOC_ARRAY(type,count) (type *)malloc_array(sizeof(type),(count))
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| 261 | #define SMB_MEMALIGN_ARRAY(type,align,count) (type *)memalign_array(sizeof(type),align,(count))
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| 262 | #define SMB_REALLOC(p,s) Realloc((p),(s),True) /* Always frees p on error or s == 0 */
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| 263 | #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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| 264 | #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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| 265 | #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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| 266 | #define SMB_CALLOC_ARRAY(type,count) (type *)calloc_array(sizeof(type),(count))
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| 267 | #define SMB_XMALLOC_P(type) (type *)smb_xmalloc_array(sizeof(type),1)
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| 268 | #define SMB_XMALLOC_ARRAY(type,count) (type *)smb_xmalloc_array(sizeof(type),(count))
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| 269 |
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| 270 | /* limiting size of ipc replies */
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| 271 | #define SMB_REALLOC_LIMIT(ptr,size) (char *)SMB_REALLOC(ptr,MAX((size),4*1024))
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| 272 |
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| 273 | /* The new talloc is paranoid malloc checker safe. */
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| 274 |
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| 275 | #define TALLOC(ctx, size) talloc_zeronull(ctx, size, __location__)
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| 276 | #define TALLOC_P(ctx, type) (type *)talloc_zeronull(ctx, sizeof(type), #type)
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| 277 | #define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array_zeronull(ctx, sizeof(type), count, #type)
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| 278 | #define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup_zeronull(ctx, ptr, size, __location__)
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| 279 | #define TALLOC_ZERO(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
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| 280 | #define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero_zeronull(ctx, sizeof(type), #type)
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| 281 | #define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array_zeronull(ctx, sizeof(type), count, #type)
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| 282 | #define TALLOC_REALLOC(ctx, ptr, count) _talloc_realloc(ctx, ptr, count, __location__)
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| 283 | #define TALLOC_REALLOC_ARRAY(ctx, ptr, type, count) (type *)_talloc_realloc_array(ctx, ptr, sizeof(type), count, #type)
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| 284 | #define talloc_destroy(ctx) talloc_free(ctx)
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| 285 | #define TALLOC_FREE(ctx) do { if ((ctx) != NULL) {talloc_free(ctx); ctx=NULL;} } while(0)
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| 286 | #define TALLOC_SIZE(ctx, size) talloc_zeronull(ctx, size, __location__)
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| 287 | #define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
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| 288 |
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| 289 | /* only define PARANOID_MALLOC_CHECKER with --enable-developer and not compiling
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| 290 | the smbmount utils */
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| 291 |
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| 292 | #if defined(DEVELOPER) && !defined(SMBMOUNT_MALLOC)
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| 293 | # define PARANOID_MALLOC_CHECKER 1
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| 294 | #endif
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| 295 |
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| 296 | #if defined(PARANOID_MALLOC_CHECKER)
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| 297 |
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| 298 | #define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem_((ps),sizeof(type),(count))
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| 299 |
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| 300 | /* Get medieval on our ass about malloc.... */
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| 301 |
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| 302 | /* Restrictions on malloc/realloc/calloc. */
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| 303 | #ifdef malloc
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| 304 | #undef malloc
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| 305 | #endif
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| 306 | #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
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| 307 |
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| 308 | #ifdef realloc
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| 309 | #undef realloc
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| 310 | #endif
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| 311 | #define realloc(p,s) __ERROR_DONT_USE_REALLOC_DIRECTLY
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| 312 |
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| 313 | #ifdef calloc
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| 314 | #undef calloc
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| 315 | #endif
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| 316 | #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
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| 317 |
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| 318 | #ifdef strndup
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| 319 | #undef strndup
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| 320 | #endif
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| 321 | #define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY
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| 322 |
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| 323 | #ifdef strdup
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| 324 | #undef strdup
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| 325 | #endif
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| 326 | #define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY
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| 327 |
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| 328 | #define SMB_MALLOC(s) malloc_(s)
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| 329 | #define SMB_MALLOC_P(type) (type *)malloc_(sizeof(type))
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| 330 |
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| 331 | #define SMB_STRDUP(s) smb_xstrdup(s)
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| 332 | #define SMB_STRNDUP(s,n) smb_xstrndup(s,n)
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| 333 |
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| 334 | #else
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| 335 |
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| 336 | #define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem((ps),sizeof(type),(count))
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| 337 |
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| 338 | /* Regular malloc code. */
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| 339 |
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| 340 | #define SMB_MALLOC(s) malloc(s)
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| 341 | #define SMB_MALLOC_P(type) (type *)malloc(sizeof(type))
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| 342 |
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| 343 | #define SMB_STRDUP(s) strdup(s)
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| 344 | #define SMB_STRNDUP(s,n) strndup(s,n)
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| 345 |
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| 346 | #endif
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| 347 |
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| 348 | #define ADD_TO_ARRAY(mem_ctx, type, elem, array, num) \
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| 349 | do { \
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| 350 | *(array) = ((mem_ctx) != NULL) ? \
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| 351 | TALLOC_REALLOC_ARRAY(mem_ctx, (*(array)), type, (*(num))+1) : \
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| 352 | SMB_REALLOC_ARRAY((*(array)), type, (*(num))+1); \
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| 353 | SMB_ASSERT((*(array)) != NULL); \
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| 354 | (*(array))[*(num)] = (elem); \
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| 355 | (*(num)) += 1; \
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| 356 | } while (0)
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| 357 |
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| 358 | #define ADD_TO_LARGE_ARRAY(mem_ctx, type, elem, array, num, size) \
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| 359 | add_to_large_array((mem_ctx), sizeof(type), &(elem), (void *)(array), (num), (size));
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| 360 |
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| 361 | #ifndef ISDOT
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| 362 | #define ISDOT(p) (*(p) == '.' && *((p) + 1) == '\0')
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| 363 | #endif /* ISDOT */
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| 364 |
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| 365 | #ifndef ISDOTDOT
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| 366 | #define ISDOTDOT(p) (*(p) == '.' && *((p) + 1) == '.' && *((p) + 2) == '\0')
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| 367 | #endif /* ISDOTDOT */
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| 368 |
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| 369 | #endif /* _SMB_MACROS_H */
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