long xchmod(char *p, int wrt, char mod)
{
OFD *fd;
DND *dn; /* M01.01.03 */
const char *s;
long pos;
if ((long)(dn = findit(p,&s,0)) < 0) /* M01.01.1212.01 */
return( (long)dn );
if (!(long)dn) /* M01.01.1214.01 */
return( EPTHNF );
pos = 0;
if( ! scan( dn , s , FA_NORM , &pos ) ) /* M01.01.03 */
return( EFILNF ) ;
pos -= 21; /* point at attribute in file */
fd = dn->d_ofd;
ixlseek(fd,pos);
if (!wrt)
ixread(fd,1L,&mod);
else
{
ixwrite(fd,1L,&mod);
ixclose(fd,CL_DIR); /* for flush */
}
return(mod);
}
/* name: path name of file
* attr: atttributes
*/
long ixcreat(char *name, char attr)
{
DND *dn;
OFD *fd;
FCB *f;
const char *s;
char n[2], a[11]; /* M01.01.03 */
int i, f2; /* M01.01.03 */
long pos, rc;
n[0] = (char)ERASE_MARKER; n[1] = 0;
/* first find path */
if ((long)(dn = findit(name,&s,0)) < 0) /* M01.01.1212.01 */
return (long)dn;
if (!dn) /* M01.01.1214.01 */
return EPTHNF;
if (!*s || (*s == '.')) /* no file name || '.' || '..' */
return EPTHNF;
/* M01.01.0721.01 */
if (contains_illegal_characters(s))
return EACCDN;
/*
* if the volume label attribute is set, no others are allowed
*/
if ((attr&FA_VOL) && (attr != FA_VOL))
return EACCDN;
/*
* volume labels may only be created in the root
*/
if ((attr == FA_VOL) && dn->d_parent)
return EACCDN;
if (!(fd = dn->d_ofd))
fd = makofd(dn); /* makofd() also updates dn->d_ofd */
/*
* if a matching file already exists, we delete it first. note
* that the definition of matching, and the action taken, differs
* depending on whether the file is a volume label or not:
* . for a volume label, *any* existing volume label matches
* and will be deleted (reference: Rainbow TOS Release Notes)
* . for other files, the name must match, and the existing
* file will be deleted unless (a) it's read-only or a folder
* or (b) the file being created is a folder.
*/
pos = 0;
if (attr == FA_VOL)
f = scan(dn,"*.*",FA_VOL,&pos);
else f = scan(dn,s,FA_NORM|FA_SUBDIR,&pos);
if (f) /* found matching file / label */
{
if (attr != FA_VOL) /* for normal files, need to check more stuff */
{
/* M01.01.0730.01 */
if ((f->f_attrib & (FA_SUBDIR | FA_RO)) || (attr == FA_SUBDIR))
return EACCDN; /* subdir or read only */
}
pos -= 32;
ixdel(dn,f,pos);
}
else
pos = 0;
/* now scan for empty space */
/* M01.01.SCC.FS.02 */
while( !( f = scan(dn,n,0xff,&pos) ) )
{
/* not in current dir, need to grow */
if (!fd->o_dnode) /* but can't grow root */
return EACCDN;
if ( nextcl(fd,1) )
return EACCDN;
f = dirinit(dn);
pos = 0;
}
builds(s,a);
pos -= 32;
f->f_attrib = attr;
for (i = 0; i < 10; i++)
f->f_fill[i] = 0;
f->f_td.time = current_time;
swpw(f->f_td.time);
f->f_td.date = current_date;
swpw(f->f_td.date);
f->f_clust = 0;
f->f_fileln = 0;
ixlseek(fd,pos);
ixwrite(fd,11L,a); /* write name, set dirty flag */
ixclose(fd,CL_DIR); /* partial close to flush */
ixlseek(fd,pos);
s = (char*) ixread(fd,32L,NULL);
f2 = rc = opnfil((FCB*)s,dn,(f->f_attrib&FA_RO)?RO_MODE:RW_MODE);
if (rc < 0)
return rc;
getofd(f2)->o_flag |= O_DIRTY;
return f2;
}
/*
** ixclose -
**
** Error returns EINTRN
**
** Last modified SCC 10 Apr 85
**
** NOTE: I'm not sure that returning immediately upon an error from
** ixlseek() is the right thing to do. Some data structures may
** not be updated correctly. Watch out for this!
** Also, I'm not sure that the EINTRN return is ok.
*/
long ixclose(OFD *fd, int part)
{ /* M01.01.03 */
OFD *p, **q;
int i; /* M01.01.03 */
BCB *b;
/*
* if the file or folder has been modified, we need to make sure
* that the date/time, starting cluster, and file length in the
* directory entry are updated. In addition, for files, we must
* set the archive flag.
*
* The following code avoids multiple ixlseek()/ixlread()/ixlwrite()
* sequences by just getting a pointer to a buffer containing the
* FCB, and updating it directly. We must do an ixwrite() at the
* end so that the buffer is marked as dirty and is subsequently
* written.
*/
if (fd->o_flag & O_DIRTY)
{
FCB *fcb;
UBYTE attr;
ixlseek(fd->o_dirfil,fd->o_dirbyt); /* start of dir entry */
fcb = (FCB *)ixread(fd->o_dirfil,32L,NULL);
attr = fcb->f_attrib; /* get attributes */
memcpy(&fcb->f_td,&fd->o_td,10); /* copy date/time, start, length */
swpw(fcb->f_clust); /* & fixup byte order */
swpl(fcb->f_fileln);
if (part & CL_DIR)
fcb->f_fileln = 0L; /* dir lengths on disk are zero */
else
attr |= FA_ARCHIVE; /* set the archive flag for files */
ixlseek(fd->o_dirfil,fd->o_dirbyt+11); /* seek to attrib byte */
ixwrite(fd->o_dirfil,1,&attr); /* & rewrite it */
}
if ((!part) || (part & CL_FULL))
{
q = &fd->o_dnode->d_files;
for (p = *q; p ; p = *(q = &p->o_link))
if (p == fd)
break;
/* someone else has this file open **** TBA */
if (p)
*q = p->o_link;
else
return EINTRN; /* some kind of internal error */
}
/* only flush to appropriate drive ***** TBA ******/
for (i = 0; i < 2; i++)
for (b = bufl[i]; b; b = b->b_link)
flush(b);
return E_OK;
}
/*ARGSUSED*/
long xrename(int n, char *p1, char *p2)
{
register OFD *fd2;
OFD *f1,*fd;
FCB *f;
DND *dn1,*dn2;
const char *s1,*s2;
char buf[11];
int hnew,att;
long rc, h1;
if (!ixsfirst(p2,0,(DTAINFO *)0L))
return(EACCDN);
if ((long)(dn1 = findit(p1,&s1,0)) < 0) /* M01.01.1212.01 */
return( (long)dn1 );
if (!dn1) /* M01.01.1214.01 */
return( EPTHNF );
if ((long)(dn2 = findit(p2,&s2,0)) < 0) /* M01.01.1212.01 */
return( (long)dn2 );
if (!dn2) /* M01.01.1214.01 */
return( EPTHNF );
if (contains_illegal_characters(s2))
return( EACCDN ) ;
if ((h1 = xopen(p1, 2)) < 0L)
return (h1);
f1 = getofd ((int)h1);
fd = f1->o_dirfil;
buf[0] = 0xe5;
ixlseek(fd,f1->o_dirbyt);
if (dn1 != dn2)
{
/* get old attribute */
f = (FCB *) ixread(fd,32L,NULLPTR);
att = f->f_attrib;
/* erase (0xe5) old file */
ixlseek(fd,f1->o_dirbyt);
ixwrite(fd,1L,buf);
/* copy time/date/clust, etc. */
ixlseek(fd,f1->o_dirbyt + 22);
ixread(fd,10L,buf);
hnew = xcreat(p2,att);
fd2 = getofd(hnew);
ixlseek(fd2->o_dirfil,fd2->o_dirbyt + 22);
ixwrite(fd2->o_dirfil,10L,buf);
fd2->o_flag &= ~O_DIRTY;
xclose(hnew);
ixclose(fd2->o_dirfil,CL_DIR);
}
else
{
builds(s2,buf);
ixwrite(fd,11L,buf);
}
if ((rc = xclose((int)h1)) < 0L)
return(rc);
return(ixclose(fd,CL_DIR));
}
long xrmdir(char *p)
{
register DND *d;
DND *d1,**q;
FCB *f;
OFD *fd,*f2; /* M01.01.03 */
long pos;
const char *s;
register int i;
if ((long)(d = findit(p,&s,1)) < 0) /* M01.01.1212.01 */
return( (long)d );
if (!d) /* M01.01.1214.01 */
return( EPTHNF );
/* M01.01.SCC.FS.09 */
if( ! d->d_parent ) /* Can't delete root */
return( EACCDN ) ;
for( i = 1 ; i <= NCURDIR ; i++ ) /* Can't delete in use */
if( diruse[i] && dirtbl[i] == d )
return( EACCDN ) ;
/* end M01.01.SCC.FS.09 */
if (!(fd = d->d_ofd))
if (!(fd = makofd(d)))
return (ENSMEM);
ixlseek(fd,0x40L);
do
{
if (!(f = (FCB *) ixread(fd,32L,NULLPTR)))
break;
} while (f->f_name[0] == (char)0x0e5 || f->f_attrib == FA_LFN);
if( f != (FCB*)NULLPTR && f->f_name[0] != 0 )
return(EACCDN);
for(d1 = *(q = &d->d_parent->d_left); d1 != d; d1 = *(q = &d1->d_right))
; /* follow sib-links */
if( d1 != d )
return(EINTRN); /* internal error */
if (d->d_files)
return(EINTRN); /* open files ? - internal error */
if (d->d_left)
return(EINTRN); /* subdir - internal error */
/* take him out ! */
*q = d->d_right;
if (d->d_ofd)
{
xmfreblk((char *)d->d_ofd);
}
d1 = d->d_parent;
xmfreblk((char *)d);
ixlseek((f2 = fd->o_dirfil),(pos = fd->o_dirbyt));
f = (FCB *) ixread(f2,32L,NULLPTR);
return(ixdel(d1,f,pos));
}
long xmkdir(char *s)
{
register OFD *f;
register FCB *f2;
OFD *fd,*f0;
FCB *b;
DND *dn;
int h,cl,plen;
long rc;
if ((h = rc = ixcreat(s,FA_SUBDIR)) < 0)
return(rc);
f = getofd(h);
/* build a DND in the tree */
fd = f->o_dirfil;
ixlseek(fd,f->o_dirbyt);
b = (FCB *) ixread(fd,32L,NULLPTR);
/* is the total path length too long? */ /* M01.01.1107.01 */
plen = namlen( b->f_name );
for ( dn = f->o_dnode; dn; dn = dn->d_parent )
plen += namlen( dn->d_name );
if ( plen >= (LEN_ZPATH-3) )
{
ixdel( f->o_dnode, b, f->o_dirbyt );
return ( EACCDN );
}
if( (dn = makdnd(f->o_dnode,b)) == NULLPTR )
{
ixdel( f->o_dnode, b, f->o_dirbyt ); /* M01.01.1103.01 */
return (ENSMEM);
}
if( (dn->d_ofd = f0 = makofd(dn)) == (OFD*)NULLPTR )
{
ixdel( f->o_dnode, b, f->o_dirbyt ); /* M01.01.1103.01 */
f->o_dnode->d_left = NULLPTR; /* M01.01.1103.01 */
xmfreblk((char *)dn);
return (ENSMEM);
}
/* initialize dir cluster */
if (nextcl(f0,1))
{
ixdel( f->o_dnode, b, f->o_dirbyt ); /* M01.01.1103.01 */
f->o_dnode->d_left = NULLPTR; /* M01.01.1103.01 */
freednd(dn); /* M01.01.1031.02 */
return(EACCDN);
}
f2 = dirinit(dn); /* pointer to dirty dir block */
/* write identifier */
memcpy(f2, dots, 22);
f2->f_attrib = FA_SUBDIR;
f2->f_time = time;
swpw( f2->f_time ) ; /* M01.01.SCC.FS.04 */
f2->f_date = date;
swpw( f2->f_date ) ; /* M01.01.SCC.FS.04 */
cl = f0->o_strtcl;
swpw(cl);
f2->f_clust = cl;
f2->f_fileln = 0;
f2++;
/* write parent entry .. */
memcpy(f2, dots, 22);
f2->f_name[1] = '.'; /* This is .. */
f2->f_attrib = FA_SUBDIR;
f2->f_time = time;
swpw( f2->f_time ) ; /* M01.01.SCC.FS.06 */
f2->f_date = date;
swpw( f2->f_date ) ; /* M01.01.SCC.FS.06 */
cl = f->o_dirfil->o_strtcl;
if (!fd->o_dnode) /* if creating a folder in the root, the */
cl = 0; /* cluster# of the .. entry must be 0 */
swpw(cl);
f2->f_clust = cl;
f2->f_fileln = 0;
memcpy(f, f0, sizeof(OFD));
f->o_flag |= O_DIRTY;
ixclose(f,CL_DIR | CL_FULL); /* force flush and write */
xmfreblk((char*)f);
sft[h-NUMSTD].f_own = 0;
sft[h-NUMSTD].f_ofd = 0;
return(E_OK);
}
FCB *scan(register DND *dnd, const char *n, WORD att, LONG *posp)
{
char name[12];
register FCB *fcb;
OFD *fd;
DND *dnd1;
BOOL m; /* T: found a matching FCB */
#if DBGFSDIR
kprintf("scan(%p, '%s', 0x%x, %p)\n", dnd, n, att, posp);
#endif
m = 0; /* have_match = false */
builds(n,name); /* format name into dir format */
name[11] = att;
dnd1 = 0; /* dummy to avoid warning */
/*
** if there is no open file descr for this directory, make one
*/
if (!(fd = dnd->d_ofd))
{
if (!(dnd->d_ofd = (fd = makofd(dnd))))
{
return ( (FCB *) 0 );
}
}
/*
** seek to desired starting position. If posp == -1, then start at
** the beginning.
*/
ixlseek( fd , (*posp == -1) ? 0L : *posp ) ;
/*
** scan thru the directory file, looking for a match
*/
while ((fcb = (FCB *) ixread(fd,32L,NULLPTR)) && (fcb->f_name[0]))
{
/*
** Add New DND.
** ( iff after scan ptr && complete flag not set && not a .
** or .. && subdirectory && not deleted ) M01.01.0512.01
*/
if( (fcb->f_attrib & FA_SUBDIR) &&
#if ! M0101052901
(!(fd->o_flag & O_COMPLETE)) &&
#endif
(fcb->f_name[0] != '.') &&
(fcb->f_name[0] != (char)0xe5)
)
{ /* see if we already have it */
dnd1 = getdnd( &fcb->f_name[0] , dnd ) ;
if (!dnd1)
if (!(dnd1 = makdnd(dnd,fcb)))
return( NULLPTR ) ;
}
if ( (m = match( name , fcb->f_name )) )
break;
}
#if DBGFSDIR
kprintf("\n scan(pos=%ld DND=%08lx DNDfoundFile=%08lx name=%s name1=%s, %d)",
(long)fd->o_bytnum, (long)dnd, (long)dnd1, fcb->f_name, name, m);
#endif
/* restore directory scanning pointer */
if( *posp != -1L )
*posp = fd->o_bytnum ;
/*
** if there was no match, but we were looking for a deleted entry,
** then return a pointer to a deleted fcb. Otherwise, if there was
** no match, return a null pointer
*/
if (!m)
{ /* assumes that (*n != 0xe5) (if posp == -1) */
if( fcb && (*n == (char)0xe5) )
return(fcb) ;
#if ! M0101052901
fd->o_flag |= O_COMPLETE;
#endif
return( (FCB *) 0 );
}
if (*posp == -1)
{ /* seek to position of found entry */
ixlseek(fd,fd->o_bytnum - 32);
return(((FCB *) dnd1));
}
return(fcb);
}