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

6       ares_gethostbyname_file - Lookup a name in the system's hosts file
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SYNOPSIS

9       #include <ares.h>
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11       int ares_gethostbyname_file(ares_channel channel, const char *name,
12                                   int family, struct hostent **host)
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DESCRIPTION

15       The  ares_gethostbyname_file  function  performs  a host lookup by name
16       against the system's hosts file (or  equivalent  local  hostname  data‐
17       base).   The channel parameter is required, but no asynchronous queries
18       are performed.  Instead, the lookup is done via the same mechanism used
19       to  perform 'f' lookups (see the lookups options field in ares_init_op‐
20       tions(3)).  The parameter name gives the hostname as a NUL-terminated C
21       string,  and family gives the desired type of address for the resulting
22       host entry.
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24       The return value indicates whether the query succeeded and, if not, how
25       it failed.  It may have any of the following values:
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27       ARES_SUCCESS       The  host lookup completed successfully and host now
28                          points  to  the  result  (and  must  be  freed  with
29                          ares_free_hostent(3)).
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31       ARES_ENOTFOUND     The hostname name was not found.
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33       ARES_EFILE         There  was  a  file  I/O  error while performing the
34                          lookup.
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36       ARES_ENOMEM        Memory was exhausted.
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38       On successful completion of the query, the pointer pointed to  by  host
39       points  to a struct hostent containing the address of the host returned
40       by the lookup.  The user must free the memory pointed to by  host  when
41       finished  with  it  by calling ares_free_hostent(3).  If the lookup did
42       not complete successfully, host will be NULL.
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AVAILABILITY

45       Added in c-ares 1.5.4
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SEE ALSO

48       ares_gethostbyname(3), ares_free_hostent(3), ares_init_options(3)
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AUTHOR

51       Brad Spencer
52       Copyright 1998 by the Massachusetts Institute of Technology.
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56                                 25 July 1998            ARES_GETHOSTBYNAME(3)