}
/*}}}*/
+/* time conversions */
+/* cpm2unix_time -- convert CP/M time to UTC */ /*{{{*/
+static time_t cpm2unix_time(int days, int hour, int min)
+{
+ /* CP/M stores timestamps in local time. We don't know which */
+ /* timezone was used and if DST was in effect. Assuming it was */
+ /* the current offset from UTC is most sensible, but not perfect. */
+
+ int year,days_per_year;
+ static int days_per_month[]={31,0,31,30,31,30,31,31,30,31,30,31};
+ char **old_environ;
+ static char gmt0[]="TZ=GMT0";
+ static char *gmt_env[]={ gmt0, (char*)0 };
+ struct tm tms;
+ time_t lt,t;
+
+ time(<);
+ t=lt;
+ tms=*localtime(<);
+ old_environ=environ;
+ environ=gmt_env;
+ lt=mktime(&tms);
+ lt-=t;
+ tms.tm_sec=0;
+ tms.tm_min=((min>>4)&0xf)*10+(min&0xf);
+ tms.tm_hour=((hour>>4)&0xf)*10+(hour&0xf);
+ tms.tm_mday=1;
+ tms.tm_mon=0;
+ tms.tm_year=78;
+ tms.tm_isdst=-1;
+ for (;;)
+ {
+ year=tms.tm_year+1900;
+ days_per_year=((year%4)==0 && ((year%100) || (year%400)==0)) ? 366 : 365;
+ if (days>days_per_year)
+ {
+ days-=days_per_year;
+ ++tms.tm_year;
+ }
+ else break;
+ }
+ for (;;)
+ {
+ days_per_month[1]=(days_per_year==366) ? 29 : 28;
+ if (days>days_per_month[tms.tm_mon])
+ {
+ days-=days_per_month[tms.tm_mon];
+ ++tms.tm_mon;
+ }
+ else break;
+ }
+ t=mktime(&tms)+(days-1)*24*3600;
+ environ=old_environ;
+ t-=lt;
+ return t;
+}
+/*}}}*/
+/* unix2cpm_time -- convert UTC to CP/M time */ /*{{{*/
+static void unix2cpm_time(time_t now, int *days, int *hour, int *min)
+{
+ struct tm *tms;
+ int i;
+
+ tms=localtime(&now);
+ *min=((tms->tm_min/10)<<4)|(tms->tm_min%10);
+ *hour=((tms->tm_hour/10)<<4)|(tms->tm_hour%10);
+ for (i=1978,*days=0; i<1900+tms->tm_year; ++i)
+ {
+ *days+=365;
+ if (i%4==0 && (i%100!=0 || i%400==0)) ++*days;
+ }
+ *days += tms->tm_yday+1;
+}
+/*}}}*/
+
/* allocation vector bitmap functions */
/* alvInit -- init allocation vector */ /*{{{*/
static void alvInit(const struct cpmSuperBlock *d)
{
block=(unsigned char)d->dir[i].pointers[j];
if (d->size>=256) block+=(((unsigned char)d->dir[i].pointers[++j])<<8);
- if (block)
+ if (block && block<d->size)
{
#ifdef CPMFS_DEBUG
fprintf(stderr,"alvInit: allocate block %d\n",block);
static void updateTimeStamps(const struct cpmInode *ino, int extent)
{
struct PhysDirectoryEntry *date;
- struct tm *t;
int i;
int ca_min,ca_hour,ca_days,u_min,u_hour,u_days;
#ifdef CPMFS_DEBUG
fprintf(stderr,"CPMFS: updating time stamps for inode %d (%d)\n",extent,extent&3);
#endif
- /* compute ctime/atime */ /*{{{*/
- t=localtime(ino->sb->cnotatime ? &ino->ctime : &ino->atime);
- ca_min=((t->tm_min/10)<<4)|(t->tm_min%10);
- ca_hour=((t->tm_hour/10)<<4)|(t->tm_hour%10);
- for (i=1978,ca_days=0; i < 1900 + t->tm_year; ++i)
- {
- ca_days+=365;
- if (i%4==0 && (i%100!=0 || i%400==0)) ++ca_days;
- }
- ca_days += t->tm_yday + 1;
- /*}}}*/
- /* compute mtime */ /*{{{*/
- t=localtime(&ino->mtime);
- u_min=((t->tm_min/10)<<4)|(t->tm_min%10);
- u_hour=((t->tm_hour/10)<<4)|(t->tm_hour%10);
- for (i=1978,u_days=0; i < 1900 + t->tm_year; ++i)
- {
- u_days+=365;
- if (i%4==0 && (i%100!=0 || i%400==0)) ++u_days;
- }
- u_days += t->tm_yday + 1;
- /*}}}*/
+ unix2cpm_time(ino->sb->cnotatime ? ino->ctime : ino->atime,&ca_days,&ca_hour,&ca_min);
+ unix2cpm_time(ino->mtime,&u_days,&u_hour,&u_min);
if ((ino->sb->type==CPMFS_P2DOS || ino->sb->type==CPMFS_DR3) && (date=ino->sb->dir+(extent|3))->status==0x21)
{
switch (extent&3)
else if (strcmp(argv[1],"p2dos")==0) d->type=CPMFS_P2DOS;
}
}
+ else if (argc>0 && argv[0][0]!='#')
+ {
+ fprintf(stderr,"%s: invalid keyword `%s'\n",cmd,argv[0]);
+ exit(1);
+ }
}
else if (argc==2 && strcmp(argv[0],"diskdef")==0)
{
if (*a) { ++a; ++pattern; } else return 0;
break;
}
- default: if (*a==*pattern) { ++a; ++pattern; } else return 0;
+ default: if (tolower(*a)==tolower(*pattern)) { ++a; ++pattern; } else return 0;
}
first=0;
}
++entries;
if (entries==dirsize) dirent=realloc(dirent,sizeof(struct cpmDirent)*(dirsize*=2));
}
-
for (i=optin; i<argc; ++i)
{
- for (j=0; j<entries; ++j)
+ int found;
+
+ for (j=0,found=0; j<entries; ++j)
{
if (match(dirent[j].name,argv[i]))
{
if (*gargc==gargcap) *gargv=realloc(*gargv,sizeof(char*)*(gargcap ? (gargcap*=2) : (gargcap=16)));
(*gargv)[*gargc]=strcpy(malloc(strlen(dirent[j].name)+1),dirent[j].name);
++*gargc;
+ ++found;
}
}
+ if (found==0)
+ {
+ char pat[255];
+ char *pattern=argv[i];
+ int user;
+
+ if (isdigit(*pattern) && *(pattern+1)==':') { user=(*pattern-'0'); pattern+=2; }
+ else if (isdigit(*pattern) && isdigit(*(pattern+1)) && *(pattern+2)==':') { user=(10*(*pattern-'0')+(*(pattern+1)-'0')); pattern+=3; }
+ else user=-1;
+ if (user==-1) sprintf(pat,"??%s",pattern);
+ else sprintf(pat,"%02d%s",user,pattern);
+
+ if (*gargc==gargcap) *gargv=realloc(*gargv,sizeof(char*)*(gargcap ? (gargcap*=2) : (gargcap=16)));
+ (*gargv)[*gargc]=strcpy(malloc(strlen(pat)+1),pat);
+ ++*gargc;
+ }
}
free(dirent);
}
int user;
char name[8],extension[3];
struct PhysDirectoryEntry *date;
- char **old_environ;
- static char gmt0[]="TZ=GMT0";
- static char *gmt_env[]={ gmt0, (char*)0 };
int highestExtno,highestExt=-1,lowestExtno,lowestExt=-1;
int protectMode=0;
/*}}}*/
i->ino=lowestExt;
i->mode=s_ifreg;
i->sb=dir->sb;
- old_environ=environ;
- environ=gmt_env; /* for mktime() */
+ /* set timestamps */ /*{{{*/
if
(
(dir->sb->type==CPMFS_P2DOS || dir->sb->type==CPMFS_DR3)
&& (date=dir->sb->dir+(lowestExt|3))->status==0x21
)
- /* set time stamps */ /*{{{*/
{
/* variables */ /*{{{*/
int u_days=0,u_hour=0,u_min=0;
int ca_days=0,ca_hour=0,ca_min=0;
- struct tm tms;
/*}}}*/
switch (lowestExt&3)
}
/*}}}*/
}
- /* compute CP/M to UNIX time format */ /*{{{*/
- tms.tm_sec=0;
- tms.tm_min=((ca_min>>4)&0xf)*10+(ca_min&0xf);
- tms.tm_hour=((ca_hour>>4)&0xf)*10+(ca_hour&0xf);
- tms.tm_mday=1;
- tms.tm_mon=0;
- tms.tm_year=78;
- tms.tm_isdst=-1;
if (i->sb->cnotatime)
{
- i->ctime=mktime(&tms)+(ca_days-1)*24*3600;
+ i->ctime=cpm2unix_time(ca_days,ca_hour,ca_min);
i->atime=0;
}
else
{
i->ctime=0;
- i->atime=mktime(&tms)+(ca_days-1)*24*3600;
+ i->atime=cpm2unix_time(ca_days,ca_hour,ca_min);
}
- tms.tm_min=((u_min>>4)&0xf)*10+(u_min&0xf);
- tms.tm_hour=((u_hour>>4)&0xf)*10+(u_hour&0xf);
- i->mtime=mktime(&tms)+(u_days-1)*24*3600;
- /*}}}*/
+ i->mtime=cpm2unix_time(u_days,u_hour,u_min);
}
- /*}}}*/
else i->atime=i->mtime=i->ctime=0;
- environ=old_environ;
+ /*}}}*/
/* Determine the inode attributes */
i->attr = 0;
/* cpmWrite -- write */ /*{{{*/
int cpmWrite(struct cpmFile *file, const char *buf, int count)
{
- int findext=1,findblock=1,extent=-1,extentno=-1,got=0,nextblockpos=-1,nextextpos=-1;
+ int findext=1,findblock=-1,extent=-1,extentno=-1,got=0,nextblockpos=-1,nextextpos=-1;
int blocksize=file->ino->sb->blksiz;
int extcap=(file->ino->sb->size<256 ? 16 : 8)*blocksize;
- int block=-1,start=-1,end=-1,ptr=-1;
+ int block=-1,start=-1,end=-1,ptr=-1,last=-1;
char buffer[16384];
while (count>0)
{
- if (findext)
+ if (findext) /*{{{*/
{
extentno=file->pos/16384;
extent=findFileExtent(file->ino->sb,file->ino->sb->dir[file->ino->ino].status,file->ino->sb->dir[file->ino->ino].name,file->ino->sb->dir[file->ino->ino].ext,0,extentno);
nextextpos=(file->pos/extcap)*extcap+extcap;
- findext=0;
- findblock=1;
- updateTimeStamps(file->ino,extent);
- }
- if (findblock)
- {
- if (start!=-1)
- {
- int last;
-
- last=writeBlock(file->ino->sb,block,buffer,start,end);
- if (file->ino->sb->size<256) for (last=15; last>=ptr; --last)
- {
- if (file->ino->sb->dir[extent].pointers[last]) break;
- }
- else for (last=14; last>=ptr; last-=2)
- {
- if (file->ino->sb->dir[extent].pointers[last] || file->ino->sb->dir[extent].pointers[last+1]) break;
- }
- if (last==ptr) /* we wrote the last used block of this extent */
- {
- file->ino->sb->dir[extent].extnol=EXTENTL((file->pos-1)/16384);
- file->ino->sb->dir[extent].extnoh=EXTENTH((file->pos-1)/16384);
- file->ino->sb->dir[extent].blkcnt=((file->pos-1)%16384)/128+1;
- file->ino->sb->dir[extent].lrc=file->pos%128;
- }
- }
if (extent==-1)
{
if ((extent=findFreeExtent(file->ino->sb))==-1) return (got==0 ? -1 : got);
file->ino->sb->dir[extent].extnoh=EXTENTH(extentno);
file->ino->sb->dir[extent].blkcnt=0;
file->ino->sb->dir[extent].lrc=0;
+ updateTimeStamps(file->ino,extent);
}
+ findext=0;
+ findblock=1;
+ }
+ /*}}}*/
+ if (findblock) /*{{{*/
+ {
ptr=(file->pos%extcap)/blocksize;
if (file->ino->sb->size>=256) ptr*=2;
block=(unsigned char)file->ino->sb->dir[extent].pointers[ptr];
if (file->ino->sb->size>=256) block+=((unsigned char)file->ino->sb->dir[extent].pointers[ptr+1])<<8;
- if (block==0)
+ if (block==0) /* allocate new block, set start/end to cover it */ /*{{{*/
{
if ((block=allocBlock(file->ino->sb))==-1) return (got==0 ? -1 : got);
file->ino->sb->dir[extent].pointers[ptr]=block&0xff;
end=(blocksize-1)/file->ino->sb->secLength;
memset(buffer,0,blocksize);
}
- else
+ /*}}}*/
+ else /* read existing block and set start/end to cover modified parts */ /*{{{*/
{
start=(file->pos%blocksize)/file->ino->sb->secLength;
end=((file->pos%blocksize+count)>blocksize ? blocksize-1 : (file->pos%blocksize+count-1))/file->ino->sb->secLength;
if (file->pos%file->ino->sb->secLength) readBlock(file->ino->sb,block,buffer,start,start);
if (end!=start && (file->pos+count-1)<blocksize) readBlock(file->ino->sb,block,buffer+end*file->ino->sb->secLength,end,end);
}
+ /*}}}*/
nextblockpos=(file->pos/blocksize)*blocksize+blocksize;
findblock=0;
}
- buffer[file->pos%blocksize]=*buf++;
- ++file->pos;
- if (file->ino->size<file->pos) file->ino->size=file->pos;
- ++got;
- if (file->pos==nextblockpos) { if (file->pos==nextextpos) findext=1; else findblock=1; }
- --count;
- }
- if (start!=-1)
- {
- int last;
-
- last=writeBlock(file->ino->sb,block,buffer,start,end);
- if (file->ino->sb->size<256) for (last=15; last>=ptr; --last)
+ /*}}}*/
+ /* fill block and write it */ /*{{{*/
+ while (file->pos!=nextblockpos && count)
{
- if (file->ino->sb->dir[extent].pointers[last]) break;
+ buffer[file->pos%blocksize]=*buf++;
+ ++file->pos;
+ if (file->ino->size<file->pos) file->ino->size=file->pos;
+ ++got;
+ --count;
}
- else for (last=14; last>=ptr; last-=2)
+ (void)writeBlock(file->ino->sb,block,buffer,start,end);
+ if (file->ino->sb->size<256) for (last=15; last>=0; --last)
{
- if (file->ino->sb->dir[extent].pointers[last] || file->ino->sb->dir[extent].pointers[last+1]) break;
+ if (file->ino->sb->dir[extent].pointers[last])
+ {
+ break;
+ }
}
- if (last==ptr) /* we wrote the last used block of this extent */
+ else for (last=14; last>0; last-=2)
{
- file->ino->sb->dir[extent].extnol=EXTENTL((file->pos-1)/16384);
- file->ino->sb->dir[extent].extnoh=EXTENTH((file->pos-1)/16384);
- file->ino->sb->dir[extent].blkcnt=((file->pos-1)%16384)/128+1;
- file->ino->sb->dir[extent].lrc=file->pos%128;
- writePhysDirectory(file->ino->sb);
+ if (file->ino->sb->dir[extent].pointers[last] || file->ino->sb->dir[extent].pointers[last+1])
+ {
+ last/=2;
+ break;
+ }
}
+ if (last>0) extentno+=(last*blocksize)/extcap;
+ file->ino->sb->dir[extent].extnol=EXTENTL(extentno);
+ file->ino->sb->dir[extent].extnoh=EXTENTH(extentno);
+ file->ino->sb->dir[extent].blkcnt=((file->pos-1)%16384)/128+1;
+ file->ino->sb->dir[extent].lrc=file->pos%128;
+ updateTimeStamps(file->ino,extent);
+ /*}}}*/
+ if (file->pos==nextextpos) findext=1;
+ else if (file->pos==nextblockpos) findblock=1;
}
+ writePhysDirectory(file->ino->sb);
return got;
}
/*}}}*/
/* Convert the chmod() into a chattr() call that affects RO */
int newatt = ino->attr & ~CPM_ATTR_RO;
- if ((mode & (S_IWUSR|S_IWGRP|S_IWOTH))) newatt |= CPM_ATTR_RO;
+ if (!(mode & (S_IWUSR|S_IWGRP|S_IWOTH))) newatt |= CPM_ATTR_RO;
return cpmAttrSet(ino, newatt);
}
/*}}}*/
projects / debian / cpmtools / blobdiff