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Commit | Line | Data |
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846841f4 | 1 | /* |
2 | * $Source$ | |
3 | * $Author$ | |
4 | * $Header$ | |
5 | * | |
6 | * Copyright (C) 1987 by the Massachusetts Institute of Technology | |
7 | * | |
8 | * Utility functions used by the DCM. | |
9 | */ | |
10 | ||
11 | #ifndef lint | |
12 | static char *rcsid_utils_c = "$Header$"; | |
13 | #endif lint | |
14 | ||
15 | #include <stdio.h> | |
16 | #include <strings.h> | |
17 | #include <varargs.h> | |
18 | #include <sys/types.h> | |
19 | #include <sys/time.h> | |
20 | #include <sys/file.h> | |
21 | #include <zephyr/zephyr.h> | |
22 | #include <sms.h> | |
23 | #include "dcm.h" | |
24 | ||
25 | ||
26 | int dbg = 0; | |
27 | int log_flags; | |
28 | ||
29 | extern char *strsave(); | |
30 | ||
31 | void dcm_com_err_hook(whoami, code, fmt, pvar) | |
32 | char *whoami; | |
33 | int code; | |
34 | char *fmt; | |
35 | caddr_t pvar; | |
36 | { | |
37 | if (whoami) { | |
38 | fputs(whoami, stderr); | |
39 | fputs(": ", stderr); | |
40 | } | |
41 | if (code) { | |
42 | fputs(error_message(code), stderr); | |
43 | } | |
44 | if (fmt) { | |
45 | _doprnt(fmt, pvar, stderr); | |
46 | } | |
47 | putc('\n', stderr); | |
48 | fflush(stderr); | |
49 | } | |
50 | ||
51 | void leave(s) | |
52 | char *s; | |
53 | { | |
54 | extern int errno; | |
55 | ||
56 | if (*s) | |
57 | com_err(whoami, errno, "%s: exiting", s); | |
58 | else | |
59 | com_err(whoami, errno, "exiting"); | |
60 | ||
61 | exit(errno); | |
62 | } | |
63 | ||
64 | void scream(argc, argv, hint) | |
65 | int argc; | |
66 | char **argv; | |
67 | int hint; | |
68 | { | |
69 | leave("Programmer botch"); | |
70 | } | |
71 | ||
72 | ||
73 | char *itoa(i) | |
74 | int i; | |
75 | { | |
76 | char buf[20]; | |
77 | ||
78 | sprintf(buf, "%d", i); | |
79 | return(strsave(buf)); | |
80 | } | |
81 | ||
82 | ||
83 | char *tkt_string() | |
84 | { | |
85 | return("/tmp/tkt_dcm"); | |
86 | } | |
87 | ||
88 | ||
89 | int maybe_lock_update(dir, host, service, exclusive) | |
90 | char *dir, *host, *service; | |
91 | int exclusive; | |
92 | { | |
93 | char lock[BUFSIZ]; | |
94 | int fd; | |
95 | ||
96 | sprintf(lock, "%s/dcm/locks/%s.%s", dir, host, service); | |
97 | if ((fd = open(lock, O_TRUNC | O_CREAT, 0)) < 0) | |
98 | com_err(whoami, errno, ": maybe_lock_update: opening %s", lock); | |
99 | else if (flock(fd, (exclusive ? LOCK_EX : LOCK_SH) | LOCK_NB) != 0) { | |
100 | if (errno != EWOULDBLOCK) | |
101 | com_err(whoami, errno, ": maybe_lock_update: flock"); | |
102 | else if (dbg & DBG_VERBOSE) | |
103 | com_err(whoami, 0, "%s already locked\n", lock); | |
104 | close(fd); | |
105 | return -1; | |
106 | } else if (dbg & DBG_VERBOSE) | |
107 | com_err(whoami, 0, "%s now locked\n", lock); | |
108 | return fd; | |
109 | } | |
110 |