sitongia@hao.ucar.edu (Leonard Sitongia) (06/05/91)
I've been using an NCD X-19 terminal with xdm from MIT X11R4 displaying cmdtool from OpenWindows 2.0 served from a Sun-4/280 running SunOS 4.0.3 for some time. It is simply exec'd from the .openwin-menu. After I upgraded the Sun to SunOS 4.1, I have been unable to run the cmdtool on the Sun to display directly on the X terminal. If I exec a cmdtool which rlogins to the same Sun (in other words the same cmdtool which fails but in this case does a rlogin to the same system that the cmdtool is running on), it suceeds (using two ttyp?'s, though). The failing cmdtool appears normal, in that it opens ok, and echos input, but will not execute it. In any case, when the cmdtool is started up, the xdm-errors reports: ttysw-TIOCSPGRP: Interrupted system call The only discernible difference is from tracing the two cmdtools. In the case of the cmdtool which is rlogin'd, here is how it reads (I typed in the letter "a"): select (256, 0xf7fff5f0, 0xf7fff5d0, 0xf7fff5b0, 0xf7746894) = 0 gettimeofday (0x197d4, 0) = 0 write (3, "".., 168) = 168 ioctl (3, 0x4004667f, 0xf7fff2dc) = 0 gettimeofday (0xf7fff4b0, 0) = 0 setitimer (0, 0xf7fff420, 0) = 0 select (256, 0xf7fff5f0, 0xf7fff5d0, 0xf7fff5b0, 0) = 1 ioctl (3, 0x4004667f, 0xf7ffef4c) = 0 read (3, "".., 32) = 32 ioctl (3, 0x4004667f, 0xf7ffefe4) = 0 write (3, "".., 92) = 92 ioctl (3, 0x4004667f, 0xf7fff2dc) = 0 select (256, 0xf7fff5f0, 0xf7fff5d0, 0xf7fff5b0, 0) = 1 write (4, "a", 1) = 1 ioctl (3, 0x4004667f, 0xf7fff2dc) = 0 select (256, 0xf7fff5f0, 0xf7fff5d0, 0xf7fff5b0, 0) = 2 readv (4, 0xf774bd70, 2) = 2 gettimeofday (0xa9a0, 0) = 0 ioctl (3, 0x4004667f, 0xf7ffef4c) = 0 read (3, "".., 32) = 32 ioctl (3, 0x4004667f, 0xf7ffefe4) = 0 write (3, "".., 76) = 76 ioctl (3, 0x4004667f, 0xf7fff2dc) = 0 gettimeofday (0xf7fff4b0, 0) = 0 setitimer (0, 0xf7fff420, 0) = 0 select (256, 0xf7fff5f0, 0xf7fff5d0, 0xf7fff5b0, 0xf7746894) = But the cmdtool which is simply exec'd is doing this (again, I typed in "a"): select (256, 0xf7fff5f8, 0xf7fff5d8, 0xf7fff5b8, 0) = 1 ioctl (3, 0x4004667f, 0xf7ffef54) = 0 read (3, "".., 32) = 32 write (3, "".., 96) = 96 read (3, 0xf7ffdba4, 32) = -1 EWOULDBLOCK (Operation would block) select (4, 0xf7ffda70, 0, 0, 0) = 1 read (3, "".., 32) = 32 read (3, "".., 28) = 28 read (3, "".., 168) = 168 read (3, "".., 2688) = 1820 read (3, "".., 868) = 868 ioctl (3, 0x4004667f, 0xf7ffefec) = 0 write (3, "".., 188) = 188 ioctl (3, 0x4004667f, 0xf7fff2e4) = 0 read (3, "".., 32) = 32 ioctl (3, 0x4004667f, 0xf7fff1fc) = 0 ioctl (3, 0x4004667f, 0xf7fff2e4) = 0 select (256, 0xf7fff5f8, 0xf7fff5d8, 0xf7fff5b8, 0) = Can someone give me some insight into what is going wrong? Thanks.