clegg@tomcat.rtp.dg.com (Alan Clegg) (01/12/90)
Has anyone successfully compiled/run UUPC under 1.5.0? I have compiled
libmodemcap.a and gotten everything
working OK there, but when it attempts to dial, it fails. When I
attempt to use 'term' at that point,
I have to use E/7 and can't get 8 bit to work anymore. One change I had
to make was to remove the
definition of ANYP from dial.h (used the one from /usr/include/sgtty.h).
Also, has anyone gotten readclock to work? With /dev/port being created
with 'mknod /dev/port b 1 4',
readclock will print all zeros then hard-hang the machine. I have tried
fixing lib/other/portio.c to open
/dev/port as O_RDWR in both places, but that does not seem to help.
-abc
Alan Clegg clegg@dg-rtp.dg.com
Industry Standard Applications clegg@verity.uucp
Data General Corp. {...!mcnc!verity!clegg}
YRAC Rural Fire Department -- Wake County Station 29evans@ditsyda.oz (Bruce Evans) (01/15/90)
In article <2124@xyzzy.UUCP> clegg@tomcat.rtp.dg.com (Alan Clegg) writes: >Also, has anyone gotten readclock to work? With /dev/port being created >with 'mknod /dev/port b 1 4', >readclock will print all zeros then hard-hang the machine. I have tried It is vital to make /dev/port a character device. When it is a block device, the FS will "serve" you by padding out i/o requests to 1K, with disastrous consequences. David Dyck already reposted some of my old docs on setting up readclock. I will repeat them in more detail. I broke lib/portio.c and lib/peekpoke.c for 1.5.0 :-[ and enclose fixed versions (these should be in 1.5.1). To make /dev/port: su bin # some suitably privileged user (maybe root) mknod /dev/port c 1 4 # must be character device chmod 600 /dev/port # must not be writable, best not readable by all If /dev/mem has a nonzero size in its inode, change the size to 0 with: su bin # if not already bin from above rm /dev/mem mknod /dev/mem c 1 1 chmod 644 /dev/mem # 600 for more security My versions look like this: crw-r--r-- 1 bin bin 1, 1 Mar 25 1989 /dev/mem crw------- 1 bin bin 1, 4 Jan 19 1989 /dev/port Install the fixed library files. Then readclock should work. Of course you have to be root or bin (or someone with read/write permissions on the devices) to read the time, and root to set the time. The only other program that I use which accesses the ports is 'fastkey' (not in 1.5.0). It works OK without changes, but to be correct it should check the values returned from port_in and port_out for -1 (no access to devices). Without this check, it gives a timeout error (after a *long* time because the new interface is slow) when it can't access the ports, because -1 doesn't look like the keyboard ack code. I tried making /dev/port a block device, to see how bad the crash was. It trashed the superblock of the root partition (/dev/hd3) in a strange way which fortunately was easy to recover from! The superblock seemed to be shifted 2 bytes to the right, padded by zeros. I edited the superblock and all was well. I repeated the crash without meaning to by forgetting to delete the bad /dev/port. The superblock was trashed again in exactly the same way. 33070 1105 /usr/src/lib/other/peekpoke.c 47521 1026 /usr/src/lib/other/portio.c #! /bin/sh # This is a shell archive. Remove anything before this line, then unpack # it by saving it into a file and typing "sh file". To overwrite existing # files, type "sh file -c". You can also feed this as standard input via # unshar, or by typing "sh <file", e.g.. If this archive is complete, you # will see the following message at the end: # "End of shell archive." # Contents: peekpoke.c portio.c # Wrapped by evans@ditsyda on Mon Jan 15 22:46:51 1990 PATH=/bin:/usr/bin:/usr/ucb ; export PATH if test -f 'peekpoke.c' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'peekpoke.c'\" else echo shar: Extracting \"'peekpoke.c'\" \(1105 characters\) sed "s/^X//" >'peekpoke.c' <<'END_OF_FILE' X/* Peek and poke using /dev/mem. X * X * Callers now ought to check the return values. X * X * Calling peek() requires read permission on /dev/mem, and consumes X * a file descriptor. Calling poke() requires write permission, and X * consumes another file descriptor. X */ X X#include <sys/types.h> X#include <fcntl.h> X#include <unistd.h> X X#define SEGSIZE 0x10 X Xint peek(segment, offset) Xunsigned segment; Xunsigned offset; X{ X unsigned char chvalue; X static int infd = -1; X X if (infd < 0) infd = open("/dev/mem", O_RDONLY); X if (infd < 0 || X lseek(infd, (unsigned long) segment * SEGSIZE + offset, SEEK_SET) < 0 || X read(infd, (char *) &chvalue, (unsigned) 1) != 1) X return(-1); X return(chvalue); X} X Xint poke(segment, offset, value) Xunsigned segment; Xunsigned offset; Xunsigned value; X{ X unsigned char chvalue; X static int outfd = -1; X X chvalue = value; X if (outfd < 0) outfd = open("/dev/mem", O_WRONLY); X if (outfd < 0 || X lseek(outfd, (unsigned long) segment * SEGSIZE + offset, SEEK_SET) < 0 || X write(outfd, (char *) &chvalue, (unsigned) 1) != 1) X return(-1); X return(chvalue); X} END_OF_FILE if test 1105 -ne `wc -c <'peekpoke.c'`; then echo shar: \"'peekpoke.c'\" unpacked with wrong size! fi # end of 'peekpoke.c' fi if test -f 'portio.c' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'portio.c'\" else echo shar: Extracting \"'portio.c'\" \(1026 characters\) sed "s/^X//" >'portio.c' <<'END_OF_FILE' X/* Port i/o functions using /dev/port. X * X * Callers now ought to check the return values. X * X * Calling port_in() requires read permission on /dev/port, and consumes X * a file descriptor. Calling port_out requires write permission, and X * consumes another file descriptor. X */ X X#include <sys/types.h> X#include <fcntl.h> X#include <unistd.h> X Xint port_in(port, valuep) Xunsigned port; Xunsigned *valuep; X{ X unsigned char chvalue; X static int infd = -1; X X if (infd < 0) infd = open("/dev/port", O_RDONLY); X if (infd < 0 || X lseek(infd, (long) port, SEEK_SET) < 0 || X read(infd, (char *) &chvalue, (unsigned) 1) != 1) X return(*valuep = -1); X return(*valuep = chvalue); X} X Xint port_out(port, value) Xunsigned port; Xunsigned value; X{ X unsigned char chvalue; X static int outfd = -1; X X chvalue = value; X if (outfd < 0) outfd = open("/dev/port", O_WRONLY); X if (outfd < 0 || X lseek(outfd, (long) port, SEEK_SET) < 0 || X write(outfd, (char *) &chvalue, (unsigned) 1) != 1) X return(-1); X return(chvalue); X} END_OF_FILE if test 1026 -ne `wc -c <'portio.c'`; then echo shar: \"'portio.c'\" unpacked with wrong size! fi # end of 'portio.c' fi echo shar: End of shell archive. exit 0 -- Bruce Evans evans@ditsyda.oz.au