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

6       explain_fseek_or_die - reposition a stream and report errors
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SYNOPSIS

9       #include <libexplain/fseek.h>
10       void explain_fseek_or_die(FILE *fp, long offset, int whence);
11       int explain_fseek_on_error(FILE *fp, long offset, int whence);
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DESCRIPTION

14       The  explain_fseek_or_die  function is used to call the fseek(3) system
15       call. On failure an explanation will be  printed  to  stderr,  obtained
16       from  the explain_fseek(3) function, and then the process terminates by
17       calling exit(EXIT_FAILURE).
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19       The explain_fseek_on_error function is used to call the fseek(3) system
20       call.  On  failure  an  explanation will be printed to stderr, obtained
21       from the explain_fseek(3) function, but still returns to the caller.
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23       fp      The fp, exactly as to be passed to the fseek(3) system call.
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25       offset  The offset, exactly as to be  passed  to  the  fseek(3)  system
26               call.
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28       whence  The  whence,  exactly  as  to  be passed to the fseek(3) system
29               call.
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RETURN VALUE

32       The explain_fseek_or_die function only returns on success, see fseek(3)
33       for  more  information. On failure, prints an explanation and exits, it
34       does not return.
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36       The explain_fseek_on_error function always returns the value return  by
37       the wrapped fseek(3) system call.
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EXAMPLE

40       The  explain_fseek_or_die  function is intended to be used in a fashion
41       similar to the following example:
42              explain_fseek_or_die(fp, offset, whence);
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SEE ALSO

45       fseek(3)
46               reposition a stream
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48       explain_fseek(3)
49               explain fseek(3) errors
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51       exit(2) terminate the calling process
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54       libexplain version 0.40
55       Copyright (C) 2010 Peter Miller
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59                                                       explain_fseek_or_die(3)
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