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

6       explain_lseek_or_die - reposition file offset and report errors
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SYNOPSIS

9       #include <libexplain/lseek.h>
10       long  long  explain_lseek_or_die(int  fildes,  long  long  offset,  int
11       whence);
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DESCRIPTION

14       The explain_lseek_or_die function is used to call the  lseek(2)  system
15       call.   On  failure  an explanation will be printed to stderr, obtained
16       from explain_lseek(3), and  then  the  process  terminates  by  calling
17       exit(EXIT_FAILURE).
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19       This  function  is intended to be used in a fashion similar to the fol‐
20       lowing example:
21              long long result = explain_lseek_or_die(fildes, offset, whence);
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23       fildes  The fildes, exactly as to be  passed  to  the  lseek(2)  system
24               call.
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26       offset  The  offset,  exactly  as  to  be passed to the lseek(2) system
27               call.
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29       whence  The whence, exactly as to be  passed  to  the  lseek(2)  system
30               call.
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32       Returns:
33               On  successful,  returns  the resulting offset location as mea‐
34               sured in bytes from the beginning of  the  file.   On  failure,
35               prints an explanation and exits.
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SEE ALSO

38       lseek(2)
39               reposition file offset
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41       explain_lseek(3)
42               explain lseek(2) errors
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44       exit(2) terminate the calling process
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47       libexplain version 1.4
48       Copyright (C) 2008 Peter Miller
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52                                                       explain_lseek_or_die(3)
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