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

6       explain_writev_or_die  -  write  data  from multiple buffers and report
7       errors
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SYNOPSIS

10       #include <libexplain/writev.h>
11       ssize_t explain_writev_or_die(int fildes, const struct iovec *data, int
12       data_size);
13       ssize_t  explain_writev_on_error(int  fildes, const struct iovec *data,
14       int data_size);
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DESCRIPTION

17       The explain_writev_or_die function is used to call the writev(2) system
18       call.  On  failure  an  explanation will be printed to stderr, obtained
19       from the explain_writev(3) function, and then the process terminates by
20       calling exit(EXIT_FAILURE).
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22       The explain_writev_on_error function is used to call the writev(2) sys‐
23       tem call. On failure an explanation will be printed to stderr, obtained
24       from the explain_writev(3) function, but still returns to the caller.
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26       fildes  The  fildes,  exactly  as  to be passed to the writev(2) system
27               call.
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29       data    The data, exactly as to be passed to the writev(2) system call.
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31       data_size
32               The data_size, exactly as to be passed to the writev(2)  system
33               call.
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RETURN VALUE

36       The   explain_writev_or_die  function  only  returns  on  success,  see
37       writev(2) for more information. On failure, prints an  explanation  and
38       exits, it does not return.
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40       The explain_writev_on_error function always returns the value return by
41       the wrapped writev(2) system call.
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EXAMPLE

44       The explain_writev_or_die function is intended to be used in a  fashion
45       similar to the following example:
46              ssize_t result = explain_writev_or_die(fildes, data, data_size);
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SEE ALSO

49       writev(2)
50               write data from multiple buffers
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52       explain_writev(3)
53               explain writev(2) errors
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55       exit(2) terminate the calling process
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58       libexplain version 1.4
59       Copyright (C) 2009 Peter Miller
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63                                                      explain_writev_or_die(3)
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