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Why not SIGPIPE for readers of pipe/FIFO?

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# 1  
Old 05-17-2010
Why not SIGPIPE for readers of pipe/FIFO?
Hi

This is a exercise question from Unix network programming vol2.

Why the SIGPIPE signal is generated only for writers when readers disappear.
why not it is generated for readers when writer disappears.


I guess, if the writer didn't get any response like the reader gets EOF,
it will keep on adding bytes to pipe/FIFO and eventually cause PIPE_BUF to full.

Please correct me if i am wrong.

Thanks
Kumaran
# 2  
Old 05-17-2010
See your book. Figure 4.21 contains the answer.
# 3  
Old 05-18-2010
The figure 4.21 says that SIGPIPE will be generated to a write process, when the read process has been terminated/ no read process is present.

My doubt is why not the reader gets SIGPIPE when write process terminates/ no write process exists.
# 4  
Old 05-20-2010
Think about it. Is reading still potentially possible when the writing process terminates?
# 5  
Old 05-20-2010
Quote:
My doubt is why not the reader gets SIGPIPE when write process terminates/ no write process exists.
Because there simply is no need to signal the reader as the reader already has a mechanism to detect this condition.
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