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macstat.c
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C/C++ Source or Header
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1992-05-11
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6KB
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207 lines
#ifdef THINK_C
#define MACOS
#include <pascal.h>
#endif
#ifdef MPW
#define MACOS
#include <Files.h>
#include <Errors.h>
#define FSFCBLen (*(short *)0x3F6)
#define CtoPstr c2pstr
#define PtoCstr p2cstr
#endif
#ifdef MACOS
#include <string.h>
#include "macstat.h"
int macstat(char *path, struct stat *buf, short nVRefNum, long lDirID );
#define unixTime(t) ((t) = ((t) < (time_t)0x7c25b080) ? 0 : (t) - (time_t)0x7c25b080)
/* assume that the path will contain a Mac-type pathname, i.e. ':'s, etc. */
int macstat(char *path, struct stat *buf, short nVRefNum, long lDirID )
{
char temp[256];
short nVRefNumT;
long lDirIDT;
short fIsHFS = false;
OSErr err;
short fUseDefault = ((nVRefNum == 0) && (lDirID == 0));
if (buf == (struct stat *)0L || path == (char *)0L) {
SysBeep(1);
return -1;
}
if (path[0] == '\0' || strlen(path)>255) {
return -1;
}
if ( fUseDefault )
{
if (GetVol((StringPtr)&temp[0], &nVRefNumT) != noErr) {
SysBeep(1);
return -1;
}
}
/* get info about the specified volume */
if (FSFCBLen > 0) /* HFS Disk? */
{
HParamBlockRec hpbr;
if ( fUseDefault )
{
WDPBRec wdpb;
wdpb.ioCompletion = 0;
wdpb.ioNamePtr = (StringPtr)temp;
err = PBHGetVol(&wdpb, 0);
nVRefNumT = wdpb.ioWDVRefNum;
lDirIDT = wdpb.ioWDDirID;
}
else
{
nVRefNumT = nVRefNum;
lDirIDT = lDirID;
err = noErr;
}
if (err == noErr)
{
hpbr.volumeParam.ioCompletion = 0;
hpbr.volumeParam.ioNamePtr = (StringPtr)temp;
hpbr.volumeParam.ioVRefNum = nVRefNumT;
hpbr.volumeParam.ioVolIndex = 0;
err = PBHGetVInfo(&hpbr, 0);
if (err == noErr && hpbr.volumeParam.ioVFSID == 0
&& hpbr.volumeParam.ioVSigWord == 0x4244) {
fIsHFS = true;
}
}
}
/* number of links, at least in System 6.0x, 0 */
buf->st_nlink = 0;
/* user id */
buf->st_uid = 0;
/* group id */
buf->st_gid = 0;
if (fIsHFS == true) /* HFS? */
{
CInfoPBRec cPB;
HParamBlockRec hPB;
/* get information about file */
cPB.hFileInfo.ioCompletion = (ProcPtr)0L;
CtoPstr(path);
strncpy(temp,path, path[0]+1);
PtoCstr(path);
cPB.hFileInfo.ioNamePtr = (StringPtr)temp;
cPB.hFileInfo.ioVRefNum = nVRefNumT;
cPB.hFileInfo.ioDirID = lDirIDT;
cPB.hFileInfo.ioFDirIndex = 0;
err = PBGetCatInfo(&cPB, false);
if (err != noErr) {
if (err != fnfErr) {
SysBeep(1);
}
return -1;
}
/* Type of file: directory or regular file + access */
buf->st_mode = (cPB.hFileInfo.ioFlAttrib & ioDirMask) ? S_IFDIR : S_IFREG |
(cPB.hFileInfo.ioFlAttrib & 0x01) ? S_IREAD : (S_IREAD | S_IWRITE);
/* last access time, modification time and creation time(?) */
buf->st_atime = buf->st_mtime = cPB.hFileInfo.ioFlMdDat;
buf->st_ctime = cPB.hFileInfo.ioFlCrDat;
/* dev number */
buf->st_dev = (long)cPB.hFileInfo.ioVRefNum;
/* inode number */
buf->st_ino = cPB.hFileInfo.ioDirID;
/* size of file - use only the data fork */
buf->st_size = cPB.hFileInfo.ioFlLgLen;
/* size of disk block */
hPB.volumeParam.ioCompletion = (ProcPtr)0L;
hPB.volumeParam.ioNamePtr = (StringPtr)temp;
hPB.volumeParam.ioVRefNum = nVRefNumT;
hPB.volumeParam.ioVolIndex = 0;
err = PBHGetVInfo(&hPB, false);
if (err != noErr) {
SysBeep(1);
return -1;
}
buf->st_blksize = cPB.hFileInfo.ioFlPyLen / hPB.volumeParam.ioVAlBlkSiz;
}
else /* MFS? */
{
ParamBlockRec pPB;
ParamBlockRec hPB;
CtoPstr(path);
strncpy(temp, path, path[0]+1);
PtoCstr(path);
pPB.fileParam.ioCompletion = (ProcPtr)0;
pPB.fileParam.ioNamePtr = (StringPtr)temp;
pPB.fileParam.ioVRefNum = nVRefNumT;
pPB.fileParam.ioFVersNum = 0;
pPB.fileParam.ioFDirIndex = 0;
err = PBGetFInfo(&pPB, false);
if (err != noErr) {
SysBeep(1);
return -1;
}
/* Type of file: either directory or regular file + access */
buf->st_mode = (pPB.fileParam.ioFlAttrib & ioDirMask) ? S_IFDIR : S_IFREG;
(pPB.fileParam.ioFlAttrib & 0x01) ? S_IREAD : (S_IREAD | S_IWRITE);
/* last access time, modification time and creation time(?) */
buf->st_atime = buf->st_mtime = pPB.fileParam.ioFlMdDat;
buf->st_ctime = pPB.fileParam.ioFlCrDat;
/* dev number */
buf->st_dev = (long)pPB.fileParam.ioVRefNum;
/* inode number */
buf->st_ino = pPB.fileParam.ioFlNum;
/* size of file - use only the data fork */
buf->st_size = pPB.fileParam.ioFlLgLen;
/* size of disk block */
hPB.volumeParam.ioCompletion = (ProcPtr)0;
hPB.volumeParam.ioNamePtr = (StringPtr)temp;
hPB.volumeParam.ioVRefNum = nVRefNumT;
hPB.volumeParam.ioVolIndex = 0;
err = PBGetVInfo(&hPB, false);
if (err != noErr) {
SysBeep(1);
return -1;
}
buf->st_blksize = pPB.fileParam.ioFlPyLen / hPB.volumeParam.ioVAlBlkSiz;
}
/* Convert from Macintosh time format to Unix time format. */
unixTime(buf->st_atime);
unixTime(buf->st_mtime);
unixTime(buf->st_ctime);
return 0;
}
#else
#error 1
#endif