1 /*
2  * System dependent header files for research
3  */
4 
5 #include <u.h>
6 #include <libc.h>
7 #include <regexp.h>
8 #include <bio.h>
9 #include <libString.h>
10 
11 /*
12  *  for the lock routines in libsys.c
13  */
14 typedef struct Mlock	Mlock;
15 struct Mlock {
16 	int fd;
17 	int pid;
18 	String *name;
19 };
20 
21 /*
22  *  from config.c - call upasconfig() before using
23  */
24 extern char *_MAILROOT;	/* root of mail system */
25 extern char *_UPASLOG;	/* log directory */
26 extern char *_UPASLIB;	/* upas library directory */
27 extern char *_UPASBIN;	/* upas binary directory */
28 extern char *_UPASTMP;	/* temporary directory */
29 extern char *_SHELL;	/* path name of shell */
30 extern char *_POST;	/* path name of post server addresses */
31 extern int MBOXMODE;	/* default mailbox protection mode */
32 extern void upasconfig(void);
33 
34 /* forgive me */
35 #define	MAILROOT	(upasconfig(), _MAILROOT)
36 #define	UPASLOG	(upasconfig(), _UPASLOG)
37 #define	UPASLIB	(upasconfig(), _UPASLIB)
38 #define	UPASBIN	(upasconfig(), _UPASBIN)
39 #define	UPASTMP	(upasconfig(), _UPASTMP)
40 #define	SHELL	(upasconfig(), _SHELL)
41 #define	POST	(upasconfig(), _POST)
42 
43 /*
44  *  files in libsys.c
45  */
46 extern char	*sysname_read(void);
47 extern char	*alt_sysname_read(void);
48 extern char	*domainname_read(void);
49 extern char	**sysnames_read(void);
50 extern char	*getlog(void);
51 extern char	*thedate(void);
52 extern Biobuf	*sysopen(char*, char*, ulong);
53 extern int	sysopentty(void);
54 extern int	sysclose(Biobuf*);
55 extern int	sysmkdir(char*, ulong);
56 extern int	syschgrp(char*, char*);
57 extern Mlock	*syslock(char *);
58 extern void	sysunlock(Mlock *);
59 extern void	syslockrefresh(Mlock *);
60 extern int	e_nonexistent(void);
61 extern int	e_locked(void);
62 extern long	sysfilelen(Biobuf*);
63 extern int	sysremove(char*);
64 extern int	sysrename(char*, char*);
65 extern int	sysexist(char*);
66 extern int	sysisdir(char*);
67 extern int	syskill(int);
68 extern int	syskillpg(int);
69 extern int	syscreate(char*, int, ulong);
70 extern Mlock	*trylock(char *);
71 extern void	pipesig(int*);
72 extern void	pipesigoff(void);
73 extern int	holdon(void);
74 extern void	holdoff(int);
75 extern int	syscreatelocked(char*, int, int);
76 extern int	sysopenlocked(char*, int);
77 extern int	sysunlockfile(int);
78 extern int	sysfiles(void);
79 extern int 	become(char**, char*);
80 extern int	sysdetach(void);
81 extern int	sysdirreadall(int, Dir**);
82 extern String	*username(String*);
83 extern char*	remoteaddr(int, char*);
84 extern int	creatembox(char*, char*);
85 
86 extern String	*readlock(String*);
87 extern char	*homedir(char*);
88 extern String	*mboxname(char*, String*);
89 extern String	*deadletter(String*);
90 
91 /*
92  *  maximum size for a file path
93  */
94 #define MAXPATHLEN 128