2 * Copyright (c) 2002-2003 M. Warner Losh.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: head/sbin/devd/devd.hh 247760 2013-03-04 02:21:24Z eadler $
35 * var_list is a collection of variables. These collections of variables
36 * are stacked up and popped down for each event that we have to process.
37 * We have multiple levels so that we can push variables that are unique
38 * to the event in question, in addition to having global variables. This
39 * allows for future flexibility.
44 /** Set a variable in this var list.
46 void set_variable(const std::string
&var
, const std::string
&val
);
47 /** Get the variable out of this, and no other, var_list. If
48 * no variable of %var is set, then %bogus will be returned.
50 const std::string
&get_variable(const std::string
&var
) const;
51 /** Is there a variable of %var set in thi stable?
53 bool is_set(const std::string
&var
) const;
54 /** A completely bogus string.
56 static const std::string bogus
;
57 static const std::string nothing
;
59 std::map
<std::string
, std::string
> _vars
;
63 * eps is short for event_proc_single. It is a single entry in an
64 * event_proc. Each keyword needs its own subclass from eps.
70 /** Does this eps match the current config?
72 virtual bool do_match(config
&) = 0;
73 /** Perform some action for this eps.
75 virtual bool do_action(config
&) = 0;
79 * match is the subclass used to match an individual variable. Its
82 class match
: public eps
85 match(config
&, const char *var
, const char *re
);
87 virtual bool do_match(config
&);
88 virtual bool do_action(config
&) { return true; }
97 * media is the subclass used to match an individual variable. Its
100 class media
: public eps
103 media(config
&, const char *var
, const char *type
);
105 virtual bool do_match(config
&);
106 virtual bool do_action(config
&) { return true; }
113 * action is used to fork a process. It matches everything.
115 class action
: public eps
118 action(const char *cmd
);
120 virtual bool do_match(config
&) { return true; }
121 virtual bool do_action(config
&);
130 virtual ~event_proc();
131 int get_priority() const { return (_prio
); }
132 void set_priority(int prio
) { _prio
= prio
; }
134 bool matches(config
&) const;
135 bool run(config
&) const;
138 std::vector
<eps
*> _epsvec
;
144 config() { push_var_table(); }
145 virtual ~config() { reset(); }
146 void add_attach(int, event_proc
*);
147 void add_detach(int, event_proc
*);
148 void add_directory(const char *);
149 void add_nomatch(int, event_proc
*);
150 void add_notify(int, event_proc
*);
151 void set_pidfile(const char *);
154 void close_pidfile();
156 void write_pidfile();
157 void remove_pidfile();
158 void push_var_table();
159 void pop_var_table();
160 void set_variable(const char *var
, const char *val
);
161 const std::string
&get_variable(const std::string
&var
);
162 const std::string
expand_string(const char * var
,
163 const char * prepend
= NULL
, const char * append
= NULL
);
164 char *set_vars(char *);
165 void find_and_execute(char);
167 void sort_vector(std::vector
<event_proc
*> &);
168 void parse_one_file(const char *fn
);
169 void parse_files_in_dir(const char *dirname
);
170 void expand_one(const char *&src
, std::string
&dst
);
171 bool is_id_char(char) const;
172 bool chop_var(char *&buffer
, char *&lhs
, char *&rhs
) const;
174 std::vector
<std::string
> _dir_list
;
175 std::string _pidfile
;
176 std::vector
<var_list
*> _var_list_table
;
177 std::vector
<event_proc
*> _attach_list
;
178 std::vector
<event_proc
*> _detach_list
;
179 std::vector
<event_proc
*> _nomatch_list
;
180 std::vector
<event_proc
*> _notify_list
;