Re: ls: write error: Broken pipe

[Dan Nicolaescu]

Jim Meyering <address@hidden> writes:

  > Dan Nicolaescu <address@hidden> wrote:
  > ...
  > > I have installed Fedora 8 on another 32bit x86 system, and the problem
  > > appears there too.
  > >
  > > (I moved /etc/csh* out of the way, used a freshly created account that
  > > uses /bin/tcsh. I also deleted all the ~/.* files)
  > >
  > > I straced the mingetty process corresponding to VT 1, and logged on
  > > there.
  > > The only mention of SIGPIPE is this:
  > >
  > > 4549  rt_sigaction(SIGPIPE, {SIG_IGN}, {SIG_DFL}, 8) = 0
  > >
  > > 4549 is the mingetty process.
  > 
  > That may be the root of your problem.
  > Some process is ignoring SIGPIPE.
  > 
  > Odd.. I don't see any trace of SIGPIPE in the mingetty sources.

Maybe it is done in some library? Here's the part of the strace log that
includes the SIGPIPE handling

4549  access("/var/run/console/dann", F_OK) = 0
4549  fstat64(3, {st_mode=S_IFREG|0600, st_size=1, ...}) = 0
4549  read(3, "1", 1)                   = 1
4549  _llseek(3, 0, [0], SEEK_SET)      = 0
4549  write(3, "2", 1)                  = 1
4549  close(3)                          = 0
4549  ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo 
...}) = 0
4549  gettid()                          = 4549
4549  open("/proc/self/task/4549/attr/current", O_RDONLY|O_LARGEFILE) = 3
4549  read(3, "kernel\0", 4095)         = 7
4549  close(3)                          = 0
4549  open("/etc/passwd", O_RDONLY|0x80000 /* O_??? */) = 3
4549  fstat64(3, {st_mode=S_IFREG|0644, st_size=1729, ...}) = 0
4549  mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) 
= 0xb7f24
000
4549  read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 1729
4549  close(3)                          = 0
4549  munmap(0xb7f24000, 4096)          = 0
4549  socket(PF_FILE, SOCK_STREAM, 0)   = 3
4549  connect(3, {sa_family=AF_FILE, path="/var/run/dbus/system_bus_socket"}, 
33) = 0
4549  fcntl64(3, F_GETFL)               = 0x2 (flags O_RDWR)
4549  fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
4549  fcntl64(3, F_GETFD)               = 0
4549  fcntl64(3, F_SETFD, FD_CLOEXEC)   = 0
4549  getuid32()                        = 0
4549  rt_sigaction(SIGPIPE, {SIG_IGN}, {SIG_DFL}, 8) = 0
4549  poll([{fd=3, events=POLLOUT, revents=POLLOUT}], 1, 0) = 1
4549  write(3, "\0", 1)                 = 1
4549  write(3, "AUTH EXTERNAL 30\r\n", 18) = 18
4549  poll([{fd=3, events=POLLIN, revents=POLLIN}], 1, -1) = 1

  > I looked at the sources for rawhide's mingetty-1.07-6.
  > Are you sure 4549 is the PID of a process running mingetty?

Yep, I have the command in history: 

strace -f -o out.strace -p 4549

and I started stracing from mingetty.

  > What version of mingetty are you using?

mingetty-1.07-6