(libc.info.gz) Operation Error Signals

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 24.2.6 Operation Error Signals
 ------------------------------
 
 These signals are used to report various errors generated by an
 operation done by the program.  They do not necessarily indicate a
 programming error in the program, but an error that prevents an
 operating system call from completing.  The default action for all of
 them is to cause the process to terminate.
 
  -- Macro: int SIGPIPE
      Broken pipe.  If you use pipes or FIFOs, you have to design your
      application so that one process opens the pipe for reading before
      another starts writing.  If the reading process never starts, or
      terminates unexpectedly, writing to the pipe or FIFO raises a
      `SIGPIPE' signal.  If `SIGPIPE' is blocked, handled or ignored,
      the offending call fails with `EPIPE' instead.
 
      Pipes and FIFO special files are discussed in more detail in 
      Pipes and FIFOs.
 
      Another cause of `SIGPIPE' is when you try to output to a socket
      that isn't connected.   Sending Data.
 
  -- Macro: int SIGLOST
      Resource lost.  This signal is generated when you have an advisory
      lock on an NFS file, and the NFS server reboots and forgets about
      your lock.
 
      In the GNU system, `SIGLOST' is generated when any server program
      dies unexpectedly.  It is usually fine to ignore the signal;
      whatever call was made to the server that died just returns an
      error.
 
  -- Macro: int SIGXCPU
      CPU time limit exceeded.  This signal is generated when the process
      exceeds its soft resource limit on CPU time.   Limits on
      Resources.
 
  -- Macro: int SIGXFSZ
      File size limit exceeded.  This signal is generated when the
      process attempts to extend a file so it exceeds the process's soft
      resource limit on file size.   Limits on Resources.
 

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