     1                                  ; ****************************************************************************
     2                                  ; cp386.s (cp1.s) - by Erdogan Tan - 20/04/2022
     3                                  ; ----------------------------------------------------------------------------
     4                                  ; Retro UNIX 386 v1 - copy -- cp oldfile newfile
     5                                  ;
     6                                  ; [ Last Modification: 17/06/2024 ]
     7                                  ;
     8                                  ; Derived from (original) UNIX v7 (& v7 x86) 'cp.c' source Code
     9                                  ; Ref:
    10                                  ; www.tuhs.org (https://minnie.tuhs.org)
    11                                  ; v7.tar.gz
    12                                  ; ****************************************************************************
    13                                  ; [ v7.tar - usr/src/cmd/cp.c (archive date: 10-1-1979) ]
    14                                  ;
    15                                  ; Assembler: NASM v2.15
    16                                  ; ((nasm cp1.s -l cp1.txt -o cp1 -Z error.txt))
    17                                  ;
    18                                  ; cp1.s - 21/04/2022 - Retro UNIX 386 v1.2 (modified unix v7 inode)
    19                                  ; cp0.s - 21/04/2022 - Retro UNIX 386 v1 & v1.1
    20                                  ; cp8086.s - 22/04/2022 - Retro UNIX 8086 v1 (16 bit 'cp0.s')
    21                                  
    22                                  ; 12/01/2022 (Retro UNIX 386 v1.2)
    23                                  ; 13/10/2015
    24                                  
    25                                  ; UNIX v1 system calls
    26                                  _rele 	equ 0
    27                                  _exit 	equ 1
    28                                  _fork 	equ 2
    29                                  _read 	equ 3
    30                                  _write	equ 4
    31                                  _open	equ 5
    32                                  _close 	equ 6
    33                                  _wait 	equ 7
    34                                  _creat 	equ 8
    35                                  _link 	equ 9
    36                                  _unlink	equ 10
    37                                  _exec	equ 11
    38                                  _chdir	equ 12
    39                                  _time 	equ 13
    40                                  _mkdir 	equ 14
    41                                  _chmod	equ 15
    42                                  _chown	equ 16
    43                                  _break	equ 17
    44                                  _stat	equ 18
    45                                  _seek	equ 19
    46                                  _tell 	equ 20
    47                                  _mount	equ 21
    48                                  _umount	equ 22
    49                                  _setuid	equ 23
    50                                  _getuid	equ 24
    51                                  _stime	equ 25
    52                                  _quit	equ 26	
    53                                  _intr	equ 27
    54                                  _fstat	equ 28
    55                                  _emt 	equ 29
    56                                  _mdate 	equ 30
    57                                  _stty 	equ 31
    58                                  _gtty	equ 32
    59                                  _ilgins	equ 33
    60                                  _sleep	equ 34 ; Retro UNIX 8086 v1 feature only !
    61                                  _msg    equ 35 ; Retro UNIX 386 v1 feature only !
    62                                  _geterr	equ 36 ; Retro UNIX 386 v1 feature only !
    63                                  ; 12/01/2022 - Retro UNIX 386 v1.2
    64                                  ; Retro UNIX 386 v2 system calls
    65                                  _setgid	equ 37
    66                                  _getgid	equ 38
    67                                  _sysver	equ 39 ; (get) Retro Unix 386 version
    68                                  
    69                                  ;;;
    70                                  ESCKey equ 1Bh
    71                                  EnterKey equ 0Dh
    72                                  
    73                                  %macro sys 1-4
    74                                      ; 03/09/2015	
    75                                      ; 13/04/2015
    76                                      ; Retro UNIX 386 v1 system call.		
    77                                      %if %0 >= 2   
    78                                          mov ebx, %2
    79                                          %if %0 >= 3    
    80                                              mov ecx, %3
    81                                              ;%if %0 = 4
    82                                              %if	%0 >= 4 ; 11/03/2022
    83                                  		mov edx, %4   
    84                                              %endif
    85                                          %endif
    86                                      %endif
    87                                      mov eax, %1
    88                                      int 30h	   
    89                                  %endmacro
    90                                  
    91                                  ; Retro UNIX 386 v1 system call format:
    92                                  ; sys systemcall (eax) <arg1 (ebx)>, <arg2 (ecx)>, <arg3 (edx)>
    93                                  
    94                                  ; 11/03/2022
    95                                  ; Note: Above 'sys' macro has limitation about register positions;
    96                                  ;	ebx, ecx, edx registers must not be used after their
    97                                  ;	positions in sys macro.
    98                                  ; for example:
    99                                  ;	'sys _write, 1, msg, ecx' is defective, because
   100                                  ;	 ecx will be used/assigned before edx in 'sys' macro.
   101                                  ; correct order may be:
   102                                  ;	'sys _write, 1, msg, eax ; (eax = byte count)
   103                                  
   104                                  struc stat
   105                                  	; Note: This is for Retro UNIX v1.2 'sysstat' output !!!
   106                                  	; (66 bytes)
   107 00000000 ????                    	.inode:  resw 1	
   108 00000002 ????                    	.mode:	 resw 1
   109 00000004 ????                    	.nlinks: resw 1 
   110 00000006 ????                    	.uid:	 resw 1
   111 00000008 ??                      	.gid:	 resb 1
   112 00000009 ??                      	.size_h: resb 1
   113 0000000A ????????                	.size:	 resd 1
   114 0000000E <res 28h>               	.dskptr: resd 10
   115 00000036 ????????                	.atime:	 resd 1
   116 0000003A ????????                	.mtime:	 resd 1
   117 0000003E ????????                	.ctime:  resd 1
   118                                  	.strucsize:
   119                                  endstruc   
   120                                  
   121                                  ;	; 20/04/2022
   122                                  ;struc stat
   123                                  ;	; Note: Retro UNIX v2 'sysstat' output DRAFT !!!
   124                                  ;	; (72 bytes)
   125                                  ;	.idev:	 resb 1
   126                                  ;	.rsvd:	 resb 3
   127                                  ;	.inum:   resd 1	
   128                                  ;	.mode:	 resw 1
   129                                  ;	.nlinks: resw 1 
   130                                  ;	.uid:	 resw 1
   131                                  ;	.gid:	 resb 1
   132                                  ;	.size_h: resb 1
   133                                  ;	.size:	 resd 1
   134                                  ;	.dskptr: resd 10
   135                                  ;	.atime:	 resd 1
   136                                  ;	.mtime:	 resd 1
   137                                  ;	.ctime:  resd 1
   138                                  ;	.strucsize:
   139                                  ;endstruc 
   140                                  
   141                                  ;S_IFMT   equ 0F000h ; /* type of file */
   142                                  ;S_IFDIR  equ 04000h ; /* directory */
   143                                  ;S_IFCHR  equ 02000h ; /* character special */
   144                                  ;S_IFBLK  equ 06000h ; /* block special */
   145                                  ;S_IFREG  equ 08000h ; /* regular */
   146                                  ;S_ISUID  equ 00800h ; /* set user id on execution */
   147                                  ;S_ISGID  equ 00400h ; /* set group id on execution */
   148                                  ;S_IREAD  equ 00100h ; /* read permission, owner */
   149                                  ;S_IWRITE equ 00080h ; /* write permission, owner */
   150                                  ;S_IEXEC  equ 00040h ; /* execute/search permission, owner */
   151                                  
   152                                  S_IFMT   equ 0F0h ; /* type of file */
   153                                  S_IFDIR  equ 040h ; /* directory */
   154                                  S_IFCHR  equ 020h ; /* character special */
   155                                  S_IFBLK  equ 060h ; /* block special */
   156                                  S_IFREG  equ 080h ; /* regular */
   157                                  S_ISUID  equ 008h ; /* set user id on execution */
   158                                  S_ISGID  equ 004h ; /* set group id on execution */
   159                                  S_IREAD  equ 001h ; /* read permission, owner */
   160                                  S_IWRITE equ 080h ; /* write permission, owner */
   161                                  S_IEXEC  equ 040h ; /* execute/search permission, owner */
   162                                  
   163                                  BSIZE equ 512
   164                                  
   165                                  ;-----------------------------------------------------------------
   166                                  ;  text - code
   167                                  ;-----------------------------------------------------------------
   168                                  
   169                                  [BITS 32] ; 32-bit intructions (for 80386 protected mode)
   170                                  
   171                                  [ORG 0] 
   172                                  
   173                                  START_CODE:
   174                                  	; 17/06/2024
   175                                  	; 20/04/2022
   176                                  	; main(argc, argv)
   177                                  
   178 00000000 89E6                    	mov	esi, esp		
   179 00000002 89F7                    	mov	edi, esi
   180 00000004 AD                      	lodsd		; number of arguments
   181                                  	;mov	edi, esi			
   182                                  	;mov	[argc], eax
   183 00000005 A2[76020000]            	mov	[argc], al
   184                                  
   185                                  	;if (argc < 3) 
   186                                  	;   goto usage;
   187                                  
   188                                  	;cmp	eax, 3
   189 0000000A 3C03                    	cmp	al, 3
   190 0000000C 7337                    	jnb	short cp_0  ; if (argc > 3) {
   191 0000000E FEC8                    	dec	al	; 21/04/2022
   192 00000010 7516                    	jnz	short cp_usage
   193                                  	sys	_msg, program_msg, 255, 0Fh
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000012 BB[77020000]        <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 00000017 B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 0000001C BA0F000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000021 B823000000          <1>  mov eax, %1
    88 00000026 CD30                <1>  int 30h
   194                                  cp_usage:
   195                                     ; fprintf(stderr, "Usage: cp: f1 f2; or cp f1 ... fn d2\n");
   196                                  	sys	_msg, usage_msg, 255, 07h
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000028 BB[B0020000]        <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 0000002D B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 00000032 BA07000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000037 B823000000          <1>  mov eax, %1
    88 0000003C CD30                <1>  int 30h
   197                                  cp_exit:
   198                                  	sys	_exit	; sys exit
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78                              <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80                              <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 0000003E B801000000          <1>  mov eax, %1
    88 00000043 CD30                <1>  int 30h
   199                                  ;hlt:
   200                                  ;	nop
   201                                  ;	nop
   202                                  ;	jmp	short hlt
   203                                  
   204                                  cp_0:
   205 00000045 89C2                    	mov	edx, eax ; [argc]
   206                                  	; 21/04/2022
   207                                  	;;dec	edx  ; argc-1
   208                                  	;dec	dl
   209 00000047 C0E202                  	shl	dl, 2 ; * 4 
   210 0000004A 01D7                    	add	edi, edx
   211                                  
   212                                  	; 21/04/2022
   213 0000004C 3C03                    	cmp	al,3
   214 0000004E 761B                    	jna	short cp_1
   215                                  
   216                                  	sys	_stat, [edi], stbuf2
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000050 8B1F                <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 00000052 B9[60030000]        <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000057 B812000000          <1>  mov eax, %1
    88 0000005C CD30                <1>  int 30h
   217 0000005E 72C8                    	jc	short cp_usage
   218                                  
   219                                  	; check retro unix v2 inode flags
   220                                  	;	(a bit different than unix v7 inode flags)
   221                                  	; if it is a directory..
   222                                  	;	regular file flag and dir flag must be 1
   223 00000060 A0[63030000]            	mov	al, [stbuf2+stat.mode+1]
   224 00000065 24C0                    	and	al, S_IFDIR|S_IFREG
   225 00000067 3CC0                    	cmp	al, S_IFDIR|S_IFREG ; directory ?
   226 00000069 75BD                    	jne	short cp_usage ; no
   227                                  	
   228                                  	; check if it is a device file
   229                                  	;test	al, S_IFREG ; regular file ?
   230                                  	;jz	short cp_usage ; no
   231                                  	;and	al, S_IFDIR ; directory ?
   232                                  	;jz	short cp_usage ; no
   233                                   
   234                                  cp_1:	
   235                                  	; esi = esp+4 = argv[0] ; executable file name (cp)
   236 0000006B AD                      	lodsd	; 21/04/2022
   237                                  cp_loop: ; for(i=1; i<argc-1;i++)
   238                                  	;lodsd
   239                                  	; ((esi = esp+8 = argv[1] ; (old) file 1))
   240                                  	; esi = argv[i] 
   241                                   	; edi = argv[argc-1] ; *
   242 0000006C E833000000              	call	copy
   243 00000071 7306                    	jnc	short cp_2
   244                                  
   245 00000073 FE05[56030000]          	inc	byte [errors]
   246                                  cp_2:
   247 00000079 AD                      	lodsd	; 21/04/2022
   248 0000007A 39FE                    	cmp	esi, edi
   249 0000007C 72EE                    	jb	short cp_loop
   250                                  
   251                                  	; bypass 'OK.' message if there was an error
   252 0000007E 803D[56030000]00        	cmp	byte [errors], 0
   253 00000085 77B7                    	ja	short cp_exit
   254                                  cp_ok:
   255                                  	sys	_msg, ok_msg, 255, 07h
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000087 BB[4E030000]        <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 0000008C B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 00000091 BA07000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000096 B823000000          <1>  mov eax, %1
    88 0000009B CD30                <1>  int 30h
   256                                  ;cp_exit:
   257                                  	sys	_exit	; sys exit
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78                              <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80                              <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 0000009D B801000000          <1>  mov eax, %1
    88 000000A2 CD30                <1>  int 30h
   258                                  
   259                                  ;_halt:
   260                                  ;	nop
   261                                  ;	jmp	short _halt
   262                                  
   263                                  copy:	; copy(from, to)
   264                                  	;
   265                                  	; 17/06/2024
   266                                  	; 21/04/2022
   267                                  	; 20/04/2022
   268                                  	; INPUT:
   269                                  	;	esi = pointer to file name to be copied
   270                                  	;  	edi = ptr to new file name or destination dir
   271                                  	; OUTPUT:
   272                                  	;	cf = 0 -> OK
   273                                  	;	cf = 1 -> Error !
   274                                  	;
   275                                  	; Modified registers: eax, ebx, ecx, edx, ebp
   276                                  	;
   277                                  	
   278                                  	; open (old) file for read
   279                                  	sys	_open, [esi], 0 
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000000A4 8B1E                <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 000000A6 B900000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000000AB B805000000          <1>  mov eax, %1
    88 000000B0 CD30                <1>  int 30h
   280 000000B2 7341                    	jnc	short cp_3
   281                                  	
   282                                  	; esi = file name (from)
   283                                  
   284                                  	;fprintf(stderr, "cp: cannot open %s\n", from);
   285                                  	;	return(1);
   286                                  
   287                                  	sys	_msg, cno_err_msg, 255, 07h
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000000B4 BB[D9020000]        <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 000000B9 B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 000000BE BA07000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000000C3 B823000000          <1>  mov eax, %1
    88 000000C8 CD30                <1>  int 30h
   288                                  	; file name (from) 
   289                                  	sys	_msg, [esi], 255, 07h
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000000CA 8B1E                <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 000000CC B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 000000D1 BA07000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000000D6 B823000000          <1>  mov eax, %1
    88 000000DB CD30                <1>  int 30h
   290                                  write_nl:
   291                                  	; new/next line
   292                                  	sys	_msg, nextline, 255, 07h
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000000DD BB[D6020000]        <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 000000E2 B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 000000E7 BA07000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000000EC B823000000          <1>  mov eax, %1
    88 000000F1 CD30                <1>  int 30h
   293 000000F3 F9                      	stc	; return with error (cf=1)
   294 000000F4 C3                      	retn
   295                                  
   296                                  cp_3:
   297 000000F5 A3[58030000]            	mov	[fold], eax ; file (descriptor) number
   298                                  
   299                                  	; (from)
   300                                  	sys	_fstat, [fold], stbuf1
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000000FA 8B1D[58030000]      <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 00000100 B9[A2030000]        <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000105 B81C000000          <1>  mov eax, %1
    88 0000010A CD30                <1>  int 30h
   301                                  
   302                                  	; 17/06/2024
   303                                  	; 09/05/2022 (retro unix 386 v1.2 kernel modification)
   304                                  	; save device number
   305                                  	; ((device number = eax return from sysfstat))
   306 0000010C A3[E4030000]            	mov	[idev1], eax
   307                                  
   308                                  	; save mode
   309                                  	;mov	ax, [stbuf1.mode]
   310                                  	;mov	[mode], ax
   311                                  	
   312                                  	; (to)
   313                                  	;sys	_stat, [edi], stbuf2  ; stat(to, &stbuf2)
   314                                  	;jnc	short cp_4
   315                                  	;jmp	cp_9
   316                                  	
   317                                  	; 22/04/2022
   318 00000111 8B2F                    	mov	ebp, [edi] ; ! (cp_8) !
   319                                  	sys	_stat, ebp, stbuf2  ; stat(to, &stbuf2)
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000113 89EB                <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 00000115 B9[60030000]        <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 0000011A B812000000          <1>  mov eax, %1
    88 0000011F CD30                <1>  int 30h
   320 00000121 7305                    	jnc	short cp_4
   321 00000123 E98A000000              	jmp	cp_9
   322                                  
   323                                  cp_4:
   324                                  	; /* is target a directory? */
   325                                  
   326                                  	; check retro unix v2 inode flags
   327                                  	;	(a bit different than unix v7 inode flags)
   328                                  	; regular file flag and dir flag must be 1 for a dir
   329 00000128 A0[63030000]            	mov	al, [stbuf2+stat.mode+1]
   330 0000012D 24C0                    	and	al, S_IFDIR|S_IFREG
   331 0000012F 3CC0                    	cmp	al, S_IFDIR|S_IFREG ; directory ?
   332 00000131 7541                    	jne	short cp_8 ; no, overwrite (create file)
   333                                  			   ; (if the new file is not same file) 	
   334                                  
   335                                  	; check if it is a device file
   336                                  	;test	al, S_IFREG ; regular file ?
   337                                  	;jz	short cp_error ; no
   338                                  	;and	al, S_IFDIR ; directory ?
   339                                  	;jz	short cp_error ; no
   340                                  
   341                                  	; add (old) file name to (destination ) path
   342                                  	; (directory name +'/'+ file name)  
   343                                  	
   344 00000133 89F5                    	mov	ebp, esi   ; save esi
   345 00000135 8B37                    	mov	esi, [edi] ; directory name address
   346 00000137 89FB                    	mov	ebx, edi   ; save edi			
   347 00000139 BF[E6030000]            	mov	edi, iobuf ; (new) path name buffer addr	
   348                                  
   349                                  	; p1 = from;
   350                                  	; p2 = to;
   351                                  	; bp = iobuf;
   352                                  cp_5:	; while(*bp++ = *p2++)
   353 0000013E AC                      	lodsb	
   354 0000013F AA                      	stosb
   355 00000140 20C0                    	and	al, al
   356 00000142 75FA                    	jnz	short cp_5
   357 00000144 C647FF2F                	mov	byte [edi-1], '/' ; bp[-1] = '/';
   358                                  	; p2 = bp
   359 00000148 89FA                    	mov	edx, edi
   360 0000014A 8B7500                  	mov	esi, [ebp] ; *p1 ; from
   361                                  cp_6:	; while(*bp = *p1++)
   362 0000014D AC                      	lodsb
   363 0000014E AA                      	stosb
   364 0000014F 08C0                    	or	al, al
   365 00000151 7408                    	jz	short cp_7
   366 00000153 3C2F                    	cmp	al, '/' ; if (*bp++ == '/')
   367 00000155 75F6                    	jne	short cp_6
   368                                  	; bp = p2
   369                                  	; 21/04/2022
   370 00000157 89D7                    	mov	edi, edx ; (discard path before file name)
   371 00000159 EBF2                    	jmp	short cp_6
   372                                  cp_7:	
   373 0000015B 89EE                    	mov	esi, ebp ; restore esi
   374 0000015D 89DF                    	mov	edi, ebx ; restore edi
   375                                  	; to = iobuf
   376 0000015F BD[E6030000]            	mov	ebp, iobuf
   377                                  		
   378                                  	sys	_stat, ebp, stbuf2  ; stat(to, &stbuf2) >= 0
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000164 89EB                <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 00000166 B9[60030000]        <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 0000016B B812000000          <1>  mov eax, %1
    88 00000170 CD30                <1>  int 30h
   379 00000172 723E                    	jc	short cp_10 ; create new file
   380                                  
   381                                  cp_8:
   382                                  	;if (stbuf1.st_dev == stbuf2.st_dev &&
   383                                  	;   stbuf1.st_ino == stbuf2.st_ino) {
   384                                  	;	fprintf(stderr, "cp: cannot copy file to itself.\n");
   385                                  	; 	return(1);
   386                                  
   387                                  	; 17/06/2024
   388                                  	; 09/05/2022 (retro unix 386 v1.2 kernel modification)
   389                                  	; (is same device ?)
   390                                  	; ((device number: eax return from sysstat))
   391                                  	; eax = [idev2]
   392                                  
   393 00000174 3B05[E4030000]          	cmp	eax, [idev1]	
   394 0000017A 7536                    	jne	short cp_10
   395                                  
   396 0000017C 66A1[A2030000]          	mov	ax, [stbuf1+stat.inode]
   397 00000182 663B05[60030000]        	cmp	ax, [stbuf2+stat.inode]
   398 00000189 7527                    	jne	short cp_10
   399                                  
   400                                  	; same file ! error...
   401 0000018B BD[EC020000]            	mov	ebp, cncis_err_msg ; error message
   402                                  	; esi = file name (from)
   403                                  write_err_msg:
   404                                  	sys	_msg, ebp, 255, 07h
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000190 89EB                <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 00000192 B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 00000197 BA07000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 0000019C B823000000          <1>  mov eax, %1
    88 000001A1 CD30                <1>  int 30h
   405                                  	; close (old) file
   406                                  	sys	_close, [fold]
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000001A3 8B1D[58030000]      <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80                              <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000001A9 B806000000          <1>  mov eax, %1
    88 000001AE CD30                <1>  int 30h
   407 000001B0 F9                      	stc	; return with error (cf=1)
   408 000001B1 C3                      	retn
   409                                  
   410                                  cp_9:
   411                                  	; 22/04/2022
   412                                  	; ebp = [edi]
   413                                  	; 21/04/2022
   414                                  	; new file (asciiz name address)
   415                                  	;mov	ebp, [edi]
   416                                  
   417                                  	; create new file (truncate if it exists) 
   418                                  cp_10:
   419                                  	; fnew = creat(to, mode)
   420 000001B2 0FB70D[A4030000]        	movzx 	ecx, word [stbuf1+stat.mode]
   421                                  	; ecx = mode 
   422                                  	sys	_creat, ebp 
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000001B9 89EB                <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80                              <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000001BB B808000000          <1>  mov eax, %1
    88 000001C0 CD30                <1>  int 30h
   423 000001C2 733B                    	jnc	short cp_11
   424                                  
   425                                  	;if ((fnew = creat(to, mode)) < 0) {
   426                                  	;	fprintf(stderr, "cp: cannot create %s\n", to);
   427                                  	;	close(fold);
   428                                  	;	return(1);
   429                                  
   430                                  	; 24/04/2022
   431                                  	sys	_close, [fold]
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000001C4 8B1D[58030000]      <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80                              <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000001CA B806000000          <1>  mov eax, %1
    88 000001CF CD30                <1>  int 30h
   432                                  
   433                                  	; error message
   434                                  	sys	_msg, ccf_err_msg, 255, 07h
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000001D1 BB[10030000]        <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 000001D6 B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 000001DB BA07000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000001E0 B823000000          <1>  mov eax, %1
    88 000001E5 CD30                <1>  int 30h
   435                                  
   436                                  	; 24/04/2022
   437                                  	; and file name (to) -at the end of error message-
   438                                  	sys	_msg, ebp, 255, 07h 
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 000001E7 89EB                <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 000001E9 B9FF000000          <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 000001EE BA07000000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 000001F3 B823000000          <1>  mov eax, %1
    88 000001F8 CD30                <1>  int 30h
   439                                  	; write next line (move cursor to next line)
   440                                  	; and return (from this/copy subroutine)
   441 000001FA E9DEFEFFFF              	jmp	write_nl
   442                                  
   443                                  cp_11:	
   444                                  	; 21/04/2022
   445 000001FF A3[5C030000]            	mov	[fnew], eax
   446                                  cp_rw_next:
   447                                  	; while(n = read(fold, iobuf, BSIZE))
   448                                  	sys	_read, [fold], iobuf, BSIZE
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000204 8B1D[58030000]      <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 0000020A B9[E6030000]        <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 0000020F BA00020000          <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000214 B803000000          <1>  mov eax, %1
    88 00000219 CD30                <1>  int 30h
   449 0000021B 7317                    	jnc	short cp_12
   450                                  
   451                                  	;if (n < 0) {
   452                                  	;   fprintf(stderr, "cp: read error\n");
   453                                  
   454                                  	; write read error message
   455 0000021D BD[25030000]            	mov	ebp, crd_err_msg
   456                                  
   457                                  cp_rw_err:
   458                                  	; 21/04/2022
   459                                  	; cf = 1
   460                                  	sys	_close, [fnew]	
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000222 8B1D[5C030000]      <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80                              <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000228 B806000000          <1>  mov eax, %1
    88 0000022D CD30                <1>  int 30h
   461 0000022F E95CFFFFFF              	jmp	write_err_msg
   462                                  
   463                                  cp_12:
   464                                  	; eax = read count
   465                                  	; eax = 0 -> eof
   466 00000234 09C0                    	or	eax, eax
   467 00000236 7423                    	jz	short cp_14 ; eof
   468                                  
   469 00000238 89C5                    	mov	ebp, eax  ; n	
   470                                  	; write(fnew, iobuf, n)
   471                                  	sys	_write, [fnew], iobuf, ebp
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 0000023A 8B1D[5C030000]      <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80 00000240 B9[E6030000]        <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83 00000245 89EA                <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000247 B804000000          <1>  mov eax, %1
    88 0000024C CD30                <1>  int 30h
   472 0000024E 7204                    	jc	short cp_13
   473                                  
   474                                  	;if (write(fnew, iobuf, n) != n)
   475                                  	;   fprintf(stderr, "cp: write error.\n");
   476                                  	;   close(fold);
   477                                  	;   close(fnew);
   478                                  	;   return(1);
   479                                  
   480                                  	; eax = written bytes
   481 00000250 39E8                    	cmp	eax, ebp
   482                                  	;je	short cp_11 ; read next (block)
   483                                  	; 21/04/2022
   484 00000252 74B0                    	je	short cp_rw_next
   485                                  	; error !
   486                                  	; eax < ebp --> cf = 1
   487                                  cp_13:
   488                                  	; close new file
   489                                  	; and then write error mesage
   490                                  	; and then close old file
   491                                  	; and then write (move cursor to) next line
   492                                  	; and then return (from subroutine) 
   493                                  	;sys	_close, [fnew]
   494                                  
   495                                  	; write error message
   496 00000254 BD[39030000]            	mov	ebp, cwr_err_msg
   497                                  	;jmp	short write_err_msg
   498                                  	; 21/04/2022
   499 00000259 EBC7                    	jmp	short cp_rw_err
   500                                  
   501                                  	; eof
   502                                  cp_14:
   503                                  	;close(fold);
   504                                  	;close(fnew);
   505                                  	;return(0);
   506                                  	
   507                                  	sys	_close, [fold]
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 0000025B 8B1D[58030000]      <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80                              <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 00000261 B806000000          <1>  mov eax, %1
    88 00000266 CD30                <1>  int 30h
   508                                  	sys	_close, [fnew]
    74                              <1> 
    75                              <1> 
    76                              <1> 
    77                              <1>  %if %0 >= 2
    78 00000268 8B1D[5C030000]      <1>  mov ebx, %2
    79                              <1>  %if %0 >= 3
    80                              <1>  mov ecx, %3
    81                              <1> 
    82                              <1>  %if %0 >= 4
    83                              <1>  mov edx, %4
    84                              <1>  %endif
    85                              <1>  %endif
    86                              <1>  %endif
    87 0000026E B806000000          <1>  mov eax, %1
    88 00000273 CD30                <1>  int 30h
   509                                  	
   510                                  	;clc
   511 00000275 C3                      	retn
   512                                  	
   513                                  ;-----------------------------------------------------------------
   514                                  ;  data - initialized data
   515                                  ;-----------------------------------------------------------------
   516                                  
   517                                  ;argc:	dd 0
   518 00000276 00                      argc:	db 0
   519                                  
   520                                  ; ----------------------------------------------------------------
   521                                  
   522                                  program_msg:
   523 00000277 0D0A                    	db  0Dh, 0Ah
   524 00000279 526574726F20554E49-     	db  'Retro UNIX 386 v1.2 COPY by Erdogan TAN - 17/06/2024'
   524 00000282 58203338362076312E-
   524 0000028B 3220434F5059206279-
   524 00000294 204572646F67616E20-
   524 0000029D 54414E202D2031372F-
   524 000002A6 30362F32303234     
   525 000002AD 0D0A00                  	db  0Dh, 0Ah, 0
   526                                  
   527                                  usage_msg:
   528 000002B0 0D0A                    	db  0Dh, 0Ah
   529 000002B2 55736167653A206370-     	db  'Usage: cp: f1 f2; or cp f1 ... fn d2'
   529 000002BB 3A2066312066323B20-
   529 000002C4 6F7220637020663120-
   529 000002CD 2E2E2E20666E206432 
   530                                  nextline:
   531 000002D6 0D0A00                  	db  0Dh, 0Ah, 0
   532                                  
   533                                  cno_err_msg:
   534 000002D9 0D0A                    	db 0Dh, 0Ah
   535 000002DB 63703A2063616E6E6F-     	db 'cp: cannot open '
   535 000002E4 74206F70656E20     
   536 000002EB 00                      	db 0
   537                                  cncis_err_msg:
   538 000002EC 0D0A                    	db 0Dh, 0Ah
   539 000002EE 63703A2063616E6E6F-     	db 'cp: cannot copy file to itself.'
   539 000002F7 7420636F7079206669-
   539 00000300 6C6520746F20697473-
   539 00000309 656C662E           
   540 0000030D 0D0A00                  	db 0Dh, 0Ah, 0
   541                                  
   542                                  ccf_err_msg:
   543 00000310 0D0A                    	db 0Dh, 0Ah
   544 00000312 63703A2063616E6E6F-     	db 'cp: cannot create '
   544 0000031B 742063726561746520 
   545 00000324 00                      	db 0
   546                                  
   547                                  crd_err_msg:
   548 00000325 0D0A                    	db 0Dh, 0Ah
   549 00000327 63703A207265616420-     	db 'cp: read error.'
   549 00000330 6572726F722E       
   550 00000336 0D0A00                  	db 0Dh, 0Ah, 0
   551                                  
   552                                  cwr_err_msg:
   553 00000339 0D0A                    	db 0Dh, 0Ah
   554 0000033B 63703A207772697465-     	db 'cp: write error.'
   554 00000344 206572726F722E     
   555 0000034B 0D0A00                  	db 0Dh, 0Ah, 0
   556                                  
   557                                  ok_msg:
   558 0000034E 0D0A                    	db  0Dh, 0Ah
   559 00000350 4F4B2E                  	db  'OK.'
   560 00000353 0D0A00                  	db  0Dh, 0Ah, 0
   561                                  
   562 00000356 00                      errors:	db 0
   563                                  
   564                                  ;-----------------------------------------------------------------
   565                                  ;  bss - uninitialized data
   566                                  ;-----------------------------------------------------------------
   567                                  
   568 00000357 90                      align 2
   569                                  
   570                                  bss_start:
   571                                  
   572                                  ABSOLUTE bss_start
   573                                  
   574                                  ; 20/04/2022
   575 00000358 ????????                fold:	resd 1
   576 0000035C ????????                fnew:	resd 1
   577                                  
   578 00000360 <res 42h>               stbuf2:	resb 66 ; for Retro UNIX 386 v1.2 (66 byte sysstat data)
   579 000003A2 <res 42h>               stbuf1:	resb 66 ; for Retro UNIX 386 v1.2 (66 byte sysstat data)
   580                                  ; 17/06/2024
   581 000003E4 ????                    idev1:	resw 1 ; device number (0= root, >0 or 1 = mounted)	
   582                                  ;idev2:	resw 1 ; device number (0= root, >0 or 1 = mounted)
   583                                  
   584 000003E6 <res 200h>              iobuf:	resb BSIZE ; resb 512 ; path name buffer
   585                                  
   586                                  ; 20/04/2022
   587                                  ;-----------------------------------------------------------------
   588                                  ; Original UNIX v7 - cp (utility) c source code (cp.c)
   589                                  ;-----------------------------------------------------------------
   590                                  ;/* UNIX V7 source code: see www.tuhs.org for details. */;
   591                                  ;
   592                                  ;/*
   593                                  ; * cp oldfile newfile
   594                                  ; */
   595                                  ;
   596                                  ;#define BSIZE	512
   597                                  ;#include <stdio.h>
   598                                  ;#include <sys/types.h>
   599                                  ;#include <sys/stat.h>
   600                                  ;struct	stat stbuf1, stbuf2;
   601                                  ;char iobuf[BSIZE];
   602                                  ;
   603                                  ;main(argc, argv)
   604                                  ;char *argv[];
   605                                  ;{
   606                                  ;	register i, r;
   607                                  ;
   608                                  ;	if (argc < 3) 
   609                                  ;		goto usage;
   610                                  ;	if (argc > 3) {
   611                                  ;		if (stat(argv[argc-1], &stbuf2) < 0)
   612                                  ;			goto usage;
   613                                  ;		if ((stbuf2.st_mode&S_IFMT) != S_IFDIR) 
   614                                  ;			goto usage;
   615                                  ;	}
   616                                  ;	r = 0;
   617                                  ;	for(i=1; i<argc-1;i++)
   618                                  ;		r |= copy(argv[i], argv[argc-1]);
   619                                  ;	exit(r);
   620                                  ;usage:
   621                                  ;	fprintf(stderr, "Usage: cp: f1 f2; or cp f1 ... fn d2\n");
   622                                  ;	exit(1);
   623                                  ;}
   624                                  ;
   625                                  ;copy(from, to)
   626                                  ;char *from, *to;
   627                                  ;{
   628                                  ;	int fold, fnew, n;
   629                                  ;	register char *p1, *p2, *bp;
   630                                  ;	int mode;
   631                                  ;	if ((fold = open(from, 0)) < 0) {
   632                                  ;		fprintf(stderr, "cp: cannot open %s\n", from);
   633                                  ;		return(1);
   634                                  ;	}
   635                                  ;	fstat(fold, &stbuf1);
   636                                  ;	mode = stbuf1.st_mode;
   637                                  ;	/* is target a directory? */
   638                                  ;	if (stat(to, &stbuf2) >=0 &&
   639                                  ;	   (stbuf2.st_mode&S_IFMT) == S_IFDIR) {
   640                                  ;		p1 = from;
   641                                  ;		p2 = to;
   642                                  ;		bp = iobuf;
   643                                  ;		while(*bp++ = *p2++)
   644                                  ;			;
   645                                  ;		bp[-1] = '/';
   646                                  ;		p2 = bp;
   647                                  ;		while(*bp = *p1++)
   648                                  ;			if (*bp++ == '/')
   649                                  ;				bp = p2;
   650                                  ;		to = iobuf;
   651                                  ;	}
   652                                  ;	if (stat(to, &stbuf2) >= 0) {
   653                                  ;		if (stbuf1.st_dev == stbuf2.st_dev &&
   654                                  ;		   stbuf1.st_ino == stbuf2.st_ino) {
   655                                  ;			fprintf(stderr, "cp: cannot copy file to itself.\n");
   656                                  ;			return(1);
   657                                  ;		}
   658                                  ;	}
   659                                  ;	if ((fnew = creat(to, mode)) < 0) {
   660                                  ;		fprintf(stderr, "cp: cannot create %s\n", to);
   661                                  ;		close(fold);
   662                                  ;		return(1);
   663                                  ;	}
   664                                  ;	while(n = read(fold,  iobuf,  BSIZE)) {
   665                                  ;		if (n < 0) {
   666                                  ;			fprintf(stderr, "cp: read error\n");
   667                                  ;			close(fold);
   668                                  ;			close(fnew);
   669                                  ;			return(1);
   670                                  ;		} else
   671                                  ;			if (write(fnew, iobuf, n) != n) {
   672                                  ;				fprintf(stderr, "cp: write error.\n");
   673                                  ;				close(fold);
   674                                  ;				close(fnew);
   675                                  ;				return(1);
   676                                  ;			}
   677                                  ;	}
   678                                  ;	close(fold);
   679                                  ;	close(fnew);
   680                                  ;	return(0);
   681                                  ;}
