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

6       explain_fstatvfs_or_die - get file system statistics and report errors
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SYNOPSIS

9       #include <libexplain/fstatvfs.h>
10       void explain_fstatvfs_or_die(int fildes, struct statvfs *data);
11       int explain_fstatvfs_on_error(int fildes, struct statvfs *data);
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DESCRIPTION

14       The  explain_fstatvfs_or_die  function  is used to call the fstatvfs(2)
15       system call. On failure an  explanation  will  be  printed  to  stderr,
16       obtained  from  the  explain_fstatvfs(3) function, and then the process
17       terminates by calling exit(EXIT_FAILURE).
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19       The explain_fstatvfs_on_error function is used to call the  fstatvfs(2)
20       system  call.  On  failure  an  explanation  will be printed to stderr,
21       obtained from the explain_fstatvfs(3) function, but  still  returns  to
22       the caller.
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24       fildes  The  fildes,  exactly as to be passed to the fstatvfs(2) system
25               call.
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27       data    The data, exactly as to be passed  to  the  fstatvfs(2)  system
28               call.
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RETURN VALUE

31       The  explain_fstatvfs_or_die  function  only  returns  on  success, see
32       fstatvfs(2) for more information. On failure, prints an explanation and
33       exits, it does not return.
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35       The  explain_fstatvfs_on_error function always returns the value return
36       by the wrapped fstatvfs(2) system call.
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EXAMPLE

39       The explain_fstatvfs_or_die function is intended to be used in a  fash‐
40       ion similar to the following example:
41              explain_fstatvfs_or_die(fildes, data);
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SEE ALSO

44       fstatvfs(2)
45               get file system statistics
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47       explain_fstatvfs(3)
48               explain fstatvfs(2) errors
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50       exit(2) terminate the calling process
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53       libexplain version 1.4
54       Copyright (C) 2010 Peter Miller
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58                                                    explain_fstatvfs_or_die(3)
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