1explain_sethostname_or_die(3L)ibrary Functions Manuaelxplain_sethostname_or_die(3)
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NAME

6       explain_sethostname_or_die - get/set hostname and report errors
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SYNOPSIS

9       #include <libexplain/sethostname.h>
10       void explain_sethostname_or_die(const char *name, size_t name_size);
11       intexplain_sethostname_on_error(const char *name, size_t name_size);
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DESCRIPTION

14       The  explain_sethostname_or_die  function  is used to call the sethost‐
15       name(2) system call. On failure  an  explanation  will  be  printed  to
16       stderr, obtained from the explain_sethostname(3) function, and then the
17       process terminates by calling exit(EXIT_FAILURE).
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19       The explain_sethostname_on_error function is used to call the  sethost‐
20       name(2)  system  call.  On  failure  an  explanation will be printed to
21       stderr, obtained from the explain_sethostname(3)  function,  but  still
22       returns to the caller.
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24       name    The  name, exactly as to be passed to the sethostname(2) system
25               call.
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27       name_size
28               The name_size, exactly as to be passed  to  the  sethostname(2)
29               system call.
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RETURN VALUE

32       The  explain_sethostname_or_die  function  only returns on success, see
33       sethostname(2) for more information. On failure, prints an  explanation
34       and exits, it does not return.
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36       The  explain_sethostname_on_error  function  always  returns  the value
37       return by the wrapped sethostname(2) system call.
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EXAMPLE

40       The explain_sethostname_or_die function is intended to  be  used  in  a
41       fashion similar to the following example:
42              explain_sethostname_or_die(name, name_size);
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SEE ALSO

45       sethostname(2)
46               get/set hostname
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48       explain_sethostname(3)
49               explain sethostname(2) errors
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51       exit(2) terminate the calling process
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54       libexplain version 0.40
55       Copyright (C) 2009 Peter Miller
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59                                                 explain_sethostname_or_die(3)
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