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78 lines
2.7 KiB
C
78 lines
2.7 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 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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#ifndef _SMB_MACROS_H
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#define _SMB_MACROS_H
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/* zero a structure */
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#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
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/* zero a structure given a pointer to the structure */
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#define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
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/* zero a structure given a pointer to the structure - no zero check */
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#define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
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/* pointer difference macro */
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#define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
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/* work out how many elements there are in a static array */
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#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
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/* assert macros */
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#define SMB_ASSERT(b) do { if (!(b)) { \
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DEBUG(0,("PANIC: assert failed at %s(%d)\n", __FILE__, __LINE__)); \
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smb_panic("assert failed"); }} while (0)
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#define smb_len(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|(PVAL(buf,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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#ifndef MIN
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#define MIN(a,b) ((a)<(b)?(a):(b))
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#endif
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#ifndef MAX
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#define MAX(a,b) ((a)>(b)?(a):(b))
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#endif
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#ifndef ABS
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#define ABS(a) ((a)>0?(a):(-(a)))
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#endif
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#ifndef SAFE_FREE /* Oh no this is also defined in tdb.h */
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/**
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* Free memory if the pointer and zero the pointer.
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*
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* @note You are explicitly allowed to pass NULL pointers -- they will
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* always be ignored.
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**/
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#define SAFE_FREE(x) do { if ((x) != NULL) {free(discard_const_p(void *, (x))); (x)=NULL;} } while(0)
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#endif
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#define malloc_p(type) (type *)malloc(sizeof(type))
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#define malloc_array_p(type, count) (type *)realloc_array(NULL, sizeof(type), count)
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#define realloc_p(p, type, count) (type *)realloc_array(p, sizeof(type), count)
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#endif /* _SMB_MACROS_H */
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