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

6       explain_flock_or_die  -  control  advisory lock on open file and report
7       errors
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SYNOPSIS

10       #include <libexplain/flock.h>
11       void explain_flock_or_die(int fildes, int command);
12       int explain_flock_on_error(int fildes, int command))
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DESCRIPTION

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

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

39       The explain_flock_or_die function is intended to be used in  a  fashion
40       similar to the following example:
41              explain_flock_or_die(fildes, command);
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SEE ALSO

44       flock(2)
45               apply or remove an advisory lock on an open file
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47       explain_flock(3)
48               explain flock(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) 2009 Peter Miller
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58                                                       explain_flock_or_die(3)
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