/* 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;
}
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);
}
