Patch Name: PHCO_26916

Patch Description: s700_800 11.00 more(1) cumulative patch

Creation Date: 02/06/14

Post Date:  02/06/24

Hardware Platforms - OS Releases:
	s700: 11.00
	s800: 11.00

Products: N/A

Filesets:
	OS-Core.CMDS-MIN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP

Automatic Reboot?: No

Status: General Release

Critical:
	Yes
	PHCO_26916: HANG
	PHCO_24693: ABORT

Category Tags:
	defect_repair enhancement general_release critical
	halts_system

Path Name: /hp-ux_patches/s700_800/11.X/PHCO_26916

Symptoms:
	PHCO_26916:
	1. In a multibyte locale environment, more(1) hangs when an
	   invalid character is entered and erased by backspace,
	   while entering command from stdin.

	2. In a multibyte locale environment, more(1) gives wrong
	   output when input is from stdin.

	3. more(1) is not dealing properly with the file containing
	   large number of escape characters (^A).

	PHCO_24693:
	1. more(1) dumps core while reading binary files.

	2. The more(1) and page(1) commands exits with
	   error message "Value too large to be stored
	   in data type" when used on large files(>2GB).

	3. when LANG=ja_JP.eucJP, more(1) does not display
	   the entire file when the input is fed exactly
	   8K of data.

Defect Description:
	PHCO_26916:
	1. more(1) hangs when an invalid character(e.g. ^K) is
	   entered and deleted by pressing backspace under multibyte
	   locale environment at !command prompt.

	   For example:
	   $export LANG=ja_JP.SJIS
	   $ll -R /dev | more
	   [....snipped....]
	   crw-rw-rw-   1 root       other   [...snipped....]
	   !abc^K       <== This is entered from keyboard

	   Now if ^K is deleted by pressing backspace, it hangs.

	Resolution:
	   more(1) checks for the number of column position of the
	   characters to be deleted. When a character is an invalid
	   character(^K) more(1) is not able to recognize it under
	   multibyte environment. The code is changed to recognize
	   it properly.

	2. For some multibyte locales, more(1) is eating up some
	   characters from the output when the input is from stdin.

	   For example:
	   $export LANG=ja_JP.eucJP
	   $wc file
	   66 93 3269 file
	   $more file | wc
	   66 93 3269
	   $more < file | wc
	   62 90 3142
	   ^^ ^^ ^^^^
	   (The above output is wrong)

	Resolution:
	   more(1) was checking wrongly for the EOF while reading a
	   file. In a multibyte environment, it was not able to
	   process the input properly when a multibyte character
	   spans across the boundary of two successive input
	   buffers. The code is changed to take care of this
	   situation. If an incomplete character is encountered at
	   the boundary of input buffer, it is carried forward to
	   next buffer.

	3. more(1) behaves incorrectly when the input file contains
	   large number of escape characters (^A).

	   For example:
	   3.1 it hangs after reading certain number of escape
	       characters (^A) from the input file.

	   3.2 The terminal session gets killed with pipe error
	       message when more(1) takes input from stdin and the
	       output is piped to wc(1) command.
	       $more < file | wc
	       Pipe error
	       Connection closed.

	Resolution:
	   There was special handling for escape character (^A) at
	   the time of input processing by more(1). Now this
	   handling is delayed till the output processing.

	PHCO_24693:
	1. more(1) command core dumps or gives "read error"
	   when viewing the binary files. For example:
	   $ more <data file>
	   [....snipped.....]
	   memory fault(core dump)

	Resolution:
	   more(1) reads blocks of data. A variable is used
	   to count the number of control characters read
	   in each block. This variable was not initialized
	   prior to each block being read, as a consequence
	   more(1) tries to write additional blocks which
	   eventually results in a core dump.

	   Now more(1) code has been changed to properly
	   initialize the variable before reading each block.

	   Though more(1), dumping core while viewing binary
	   files is resolved, there are few problems still
	   exist when reading binary files. As more(1) uses
	   the terminal interfaces, some of the control
	   characters in the binary data file could be
	   interpreted by the terminals. We advise users to
	   use the more(1) utility to view text files and
	   use other commands such as xd(1) for viewing
	   binary data files.

	2. more(1) and page(1) do not support large files.
	   For example:
	   $ ll test_file
	   -rw-rw-rw-   1 root  sys  2560000000 [...snipped..]
	   $more test_file
	   [..Snipped..]Value too large to be stored in data type

	Resolution:
	   more(1) is a 32 bit binary and the data types used
	   initially couldn't handle values greater than 2GB.
	   Hence when the size of the file exceeds 2GB, more(1)
	   used to report the above mentioned error message and
	   exit.

	   Now, more(1) is enhanced to support large files.
	   The variables are replaced with new variables
	   capable of holding large values.

	3. In ja_JP.eucJP locale, more(1) corrupts data when
	   fed exactly 8k.
	   For example: Assume the data_file is
	   having exactly 8K.
	   $export LC_ALL=ja_JP.eucJP
	   $wc data_file
	   652 653 26718 data_file
	   $more data_file | wc
	   652 653 26718
	   $cat data_file | more | wc
	   399 401 16383
	   ^^^^^^^^^^^^^
	   (The above output is wrong)

	   Similarly, the problem can be reproduced by the
	   following:
	   $export LANG=ja_JP.eucJP
	   $ dd if=data_file bs=8191 2>/dev/null | more | wc
	   652 653 26718
	   $ dd if=data_file bs=8192 2>/dev/null | more | wc
	   399 401 16383
	   $ dd if=data_file bs=8191 2>/dev/null | more | wc
	   652 653 26718

	Resolution:
	   When reading the multi-byte file, if the character
	   is part of a multi-byte and is less than mb_cur_max
	   value of the locale, more(1) used to interpret those
	   characters as EOF and used to come out assuming it
	   has read all the contents of the input file
	   resulting in partial display of the input file.

	   Now more(1) is changed to read the multi-byte input
	   files properly. The new more(1) is tested thoroughly
	   under different multi-byte locales.

SR:
	8606232376 8606233175 8606227499 8606223261 8606174802
	8606168690 1653276253 8606192627

Patch Files:
	
	OS-Core.CMDS-MIN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
	/usr/lib/nls/msg/C/more.cat
	/usr/bin/more
	/usr/bin/page

what(1) Output:
	
	OS-Core.CMDS-MIN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
	/usr/lib/nls/msg/C/more.cat:
		None

	OS-Core.CMDS-MIN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
	/usr/bin/more:
		$Revision: 82.3.2.26 $
		PATCH_11_00: ch.o command.o decode.o help.o input.o 
			line.o linenum.o main.o option.o os.o output
			.o position.o prim.o screen.o signal.o tags.
			o ttyin.o hpux_rel.o 02/06/14

	OS-Core.CMDS-MIN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
	/usr/bin/page:
		$Revision: 82.3.2.26 $
		PATCH_11_00: ch.o command.o decode.o help.o input.o 
			line.o linenum.o main.o option.o os.o output
			.o position.o prim.o screen.o signal.o tags.
			o ttyin.o hpux_rel.o 02/06/14

cksum(1) Output:
	
	OS-Core.CMDS-MIN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
	1024240630 4286 /usr/lib/nls/msg/C/more.cat

	OS-Core.CMDS-MIN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
	797269267 86016 /usr/bin/more

	OS-Core.CMDS-MIN,fr=B.11.00,fa=HP-UX_B.11.00_32/64,v=HP:
	797269267 86016 /usr/bin/page

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHCO_24693 

Equivalent Patches: None

Patch Package Size: 120 KBytes

Installation Instructions:
	Please review all instructions and the Hewlett-Packard
	SupportLine User Guide or your Hewlett-Packard support terms
	and conditions for precautions, scope of license,
	restrictions, and, limitation of liability and warranties,
	before installing this patch.
	------------------------------------------------------------
	1. Back up your system before installing a patch.

	2. Login as root.

	3. Copy the patch to the /tmp directory.

	4. Move to the /tmp directory and unshar the patch:

		cd /tmp
		sh PHCO_26916

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHCO_26916.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHCO_26916.  If you do not wish to retain a
	copy of the original software, include the patch_save_files
	option in the swinstall command above:

		-x patch_save_files=false

	WARNING: If patch_save_files is false when a patch is installed,
		 the patch cannot be deinstalled.  Please be careful
		 when using this feature.

	For future reference, the contents of the PHCO_26916.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHCO_26916.depot

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHCO_26916.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None