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Can background process access to stdout,stderr

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Operating Systems Linux Can background process access to stdout,stderr
# 1  
Old 08-04-2009
Lightbulb Can background process access to stdout,stderr
Hi folks Smilie

Can deamonized process access to stderr, stdout?

I 'm trying to display error_num/return value of a function run() in stderr using
fprintf(stderr, "function run() returns = %d", ret_val);

run() is called after deamonizing the process.
# 2  
Old 08-04-2009
Yes, they can. A background process inherits its parents file descriptors, but there's no guarantee on where they're pointing to, or even if they're open.

Generally it's a good idea for a daemon to close stdin/stdout/stderr, and print messages to a log (either via syslog() or directly)
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