Initial commit

1 files changed, 220 insertions, 0 deletions

diff --git a/noao/mtlocal/cyber/t_ldumpf.x b/noao/mtlocal/cyber/t_ldumpf.x
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+++ b/noao/mtlocal/cyber/t_ldumpf.x
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+include	<mach.h>
+include "cyber.h"
+
+# T_LDUMPF -- list permanent files stored on a DUMPF tape.
+# The permanent file name, owner id, cycle number, creation date,
+# last attach and last alteration dates are listed for specified files
+# of a Cyber DUMPF format tape.
+
+procedure t_ldumpf ()
+
+pointer	sp, dmp
+char	dumpf_file[SZ_FNAME], file_list[SZ_LINE], in_fname[SZ_FNAME]
+int	file_number, ranges[3, MAX_RANGES], nfiles
+int	read_pf_table(), get_next_number(), decode_ranges()
+int	mtfile()
+
+begin
+	# Allocate space for program data structure.
+	call smark (sp)
+	call salloc (dmp, LEN_DMP, TY_STRUCT)
+
+	# Get parameters; get file_list only if dump_file is a general
+	# tape name.
+	call clgstr ("dumpf_file", dumpf_file, SZ_FNAME)
+	if (mtfile (dumpf_file) == YES)
+	    call clgstr ("file_list", file_list, SZ_LINE)
+	else
+	    call strcpy ("1", file_list, SZ_LINE)
+	if (decode_ranges (file_list, ranges, MAX_RANGES, nfiles) == ERR)
+	    call error (0, "Illegal file number list")
+
+	# For each file in file_list call read_pf_table.
+	file_number = 0
+	while (get_next_number (ranges, file_number) != EOF) {
+	    if (mtfile (dumpf_file) == YES)
+		call mtfname (dumpf_file, file_number + 1, in_fname, SZ_FNAME)
+	    else
+	        call strcpy (dumpf_file, in_fname, SZ_FNAME)
+	    if (read_pf_table (in_fname, file_number, dmp) == EOF) {
+		call printf ("End of DUMPF tape\n")
+		call sfree (sp)
+		return
+	    }
+	}
+	call sfree (sp)
+end
+
+
+# READ_PF_TABLE -- reads and prints out the Cyber permanent file information.
+
+int procedure read_pf_table (dumpf_file, file_num, dmp)
+
+char	dumpf_file[SZ_FNAME]
+int	file_num
+pointer	dmp
+int	dump_fd, init
+pointer	dump_buf, spp_buf, sp
+int	mtopen(), read_cyber(), bitupk(), read_cyber_init()
+
+begin
+	# Allocate buffer space for the Permanent File Table
+	call smark (sp)
+	call salloc (dump_buf, SZ_PFT, TY_CHAR)
+	call salloc (spp_buf, SZ_PFT, TY_CHAR)
+
+	# Open input DUMPF tape
+	dump_fd = mtopen (dumpf_file, READ_ONLY, SZ_TAPE_BUFFER)
+	init = read_cyber_init()
+
+	# Read File Header, Permanent File Catalog and Permanent File Table
+	if (read_cyber (dump_fd, Memc[dump_buf], SZ_PFT) == EOF) {
+	    call sfree (sp)
+	    call close (dump_fd)
+	    return (EOF)
+	}
+
+	# Reorder Cyber bits into packed SPP bit array
+	call order_cyber_bits (Memc[dump_buf], 1, Memc[spp_buf], LEN_PFT)
+
+	# Get number of characters in permanent file name
+	NCHARS_PFN(dmp) = bitupk (Memc[spp_buf], NCHARS_OFFSET, 6)
+
+	# Unpack file information from Permanent File Table
+	call unpk_pf_info (Memc[spp_buf], dmp)
+
+	# Print Permanent File information
+	call print_pf_info (file_num, dmp)
+	call flush (STDOUT)
+
+	# Return buffer, close tape file
+	call sfree (sp)
+	call close (dump_fd)
+	return (OK)
+end
+
+
+# DECIPHER_DC -- An ascii character string is decoded from an input
+# bit stream.  An offset into the bit stream and the number of characters
+# to unpack are input.
+
+procedure decipher_dc (inbuf, bit_offset, nchars, outbuf)
+
+char	inbuf[ARB], outbuf[nchars + 1]
+int	offset, nchars, ip, op, temp, bit_offset
+int	bitupk()
+
+begin
+	op = 1
+	offset = bit_offset
+	do ip = 1, nchars {
+	    temp = bitupk (inbuf, offset, NBITS_DC)
+	    if (temp == 55B) {
+		# Blank
+	        offset = offset - NBITS_DC
+		next
+	    }
+	    else {
+	        call display_code (temp, outbuf[op])
+		op = op + 1
+	        offset = offset - NBITS_DC
+	    }
+	}
+	outbuf[op] = EOS
+end
+
+
+# UNPK_PF_INFO -- unpacks words from the Permanent File Information Table
+# and fills program data structure dmp.  
+
+procedure unpk_pf_info (inbuf, dmp)
+
+char	inbuf[SZ_PFT]
+pointer	dmp
+int	creation, attach, alteration
+int	bitupk()
+
+begin	
+	# Extract Permanent File Name
+	call decipher_dc (inbuf, PFN_OFFSET, NCHARS_PFN(dmp), PFN(dmp))
+
+	# Extract ID
+	call decipher_dc (inbuf, PF_ID_OFFSET, SZ_PF_ID, ID(dmp))
+
+	# Extract cycle number
+	CY(dmp) = bitupk (inbuf, CY_OFFSET, NBITS_CY)
+	
+	# Extract creation, last_attach and last_alteration dates which are
+	# written in 18-bits as "yyddd".
+	creation = bitupk (inbuf, CREATE_OFFSET, NBITS_DATE)
+	call ld_get_date (creation, D_CREATE(dmp), M_CREATE(dmp), Y_CREATE(dmp))
+
+	attach = bitupk (inbuf, ATTACH_OFFSET, NBITS_DATE)
+	call ld_get_date (attach, D_ATTACH(dmp), M_ATTACH(dmp), Y_ATTACH(dmp))
+
+	alteration = bitupk (inbuf, ALTER_OFFSET, NBITS_DATE)
+	call ld_get_date (alteration, D_ALTER(dmp), M_ALTER(dmp), Y_ALTER(dmp))
+end
+
+
+# GET_DATE -- The day, month and year are decoded from the lower 18 bits
+# of the input integer.  The input format is "yyddd"; three integers are
+# returned as arguments: day, month, year.
+
+procedure ld_get_date (yyddd, day, month, year)
+
+int	yyddd, day, month, year, ddd
+int	days_in_month[12], i, bitupk()
+
+data 	(days_in_month[i], i=1,9) /31, 28, 31, 30, 31, 30, 31, 31, 30/
+data 	(days_in_month[i], i=10, 12) /31, 30, 31/
+
+begin	
+	year = bitupk (yyddd, 10, 9) + 1900
+	ddd = bitupk (yyddd, 1, 9)
+
+	# Leap year tests
+	if (mod (year, 4) == 0)
+	    days_in_month[2] = 29
+	if (mod (year, 100) == 0)
+	    days_in_month[2] = 28
+	if (mod (year, 400) == 0)
+	    days_in_month[2] = 29
+
+	for (i=1; i<=12; i=i+1) {
+	    if (ddd <= days_in_month[i])
+		break
+	    else
+	        ddd = ddd - days_in_month[i]
+	}
+
+	month = i 
+	day = ddd
+end
+
+
+# PRINT_PF_INFO -- information from the permanent file table is printed.
+
+procedure print_pf_info (file_num, dmp)
+
+pointer	dmp
+int	file_num
+
+begin
+	call printf ("\n[%d]%6tPFN= %s, ID= %s, CY= %d\n")
+	    call pargi (file_num)
+	    call pargstr (PFN(dmp))
+	    call pargstr (ID(dmp))
+	    call pargi (CY(dmp))
+	call printf ("%6tCreation: %d/%d/%d, Last Alteration: %d/%d/%d, ")
+	    call pargi (M_CREATE(dmp))
+	    call pargi (D_CREATE(dmp))
+	    call pargi (Y_CREATE(dmp))
+	    call pargi (M_ALTER(dmp))
+	    call pargi (D_ALTER(dmp))
+	    call pargi (Y_ALTER(dmp))
+	call printf ("Last Attach: %d/%d/%d\n")
+	    call pargi (M_ATTACH(dmp))
+	    call pargi (D_ATTACH(dmp))
+	    call pargi (Y_ATTACH(dmp))
+end