1explain_setsid_or_die(3)   Library Functions Manual   explain_setsid_or_die(3)
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NAME

6       explain_setsid_or_die - sets process group ID and report errors
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SYNOPSIS

9       #include <libexplain/setsid.h>
10       pid_t explain_setsid_or_die(void);
11       pid_t explain_setsid_on_error(void);
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DESCRIPTION

14       The explain_setsid_or_die function is used to call the setsid(2) system
15       call. On failure an explanation will be  printed  to  stderr,  obtained
16       from the explain_setsid(3) function, and then the process terminates by
17       calling exit(EXIT_FAILURE).
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19       The explain_setsid_on_error function is used to call the setsid(2) sys‐
20       tem call. On failure an explanation will be printed to stderr, obtained
21       from the explain_setsid(3) function, but still returns to the caller.
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RETURN VALUE

24       The explain_setsid_or_die function only returns on  success,  see  set‐
25       sid(2)  for  more  information.  On  failure, prints an explanation and
26       exits, it does not return.
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28       The explain_setsid_on_error function always returns the value return by
29       the wrapped setsid(2) system call.
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EXAMPLE

32       The  explain_setsid_or_die function is intended to be used in a fashion
33       similar to the following example:
34              explain_setsid_or_die();
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SEE ALSO

37       setsid(2)
38               creates a session and sets the process group ID
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40       explain_setsid(3)
41               explain setsid(2) errors
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43       exit(2) terminate the calling process
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46       libexplain version 1.4
47       Copyright (C) 2011 Peter Miller
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51                                                      explain_setsid_or_die(3)
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