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Commit | Line | Data |
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846841f4 | 1 | /* |
2 | * $Source$ | |
3 | * $Author$ | |
4 | * $Header$ | |
5 | * | |
846841f4 | 6 | * |
7 | * Utility functions used by the DCM. | |
0a5ff702 | 8 | * |
9 | * (c) Copyright 1987, 1988 by the Massachusetts Institute of Technology. | |
10 | * For copying and distribution information, please see the file | |
11 | * <mit-copyright.h>. | |
846841f4 | 12 | */ |
13 | ||
14 | #ifndef lint | |
15 | static char *rcsid_utils_c = "$Header$"; | |
16 | #endif lint | |
17 | ||
0a5ff702 | 18 | #include <mit-copyright.h> |
846841f4 | 19 | #include <stdio.h> |
20 | #include <strings.h> | |
21 | #include <varargs.h> | |
22 | #include <sys/types.h> | |
23 | #include <sys/time.h> | |
24 | #include <sys/file.h> | |
25 | #include <zephyr/zephyr.h> | |
26 | #include <sms.h> | |
27 | #include "dcm.h" | |
28 | ||
29 | ||
30 | int dbg = 0; | |
31 | int log_flags; | |
32 | ||
33 | extern char *strsave(); | |
34 | ||
35 | void dcm_com_err_hook(whoami, code, fmt, pvar) | |
36 | char *whoami; | |
37 | int code; | |
38 | char *fmt; | |
39 | caddr_t pvar; | |
40 | { | |
41 | if (whoami) { | |
42 | fputs(whoami, stderr); | |
43 | fputs(": ", stderr); | |
44 | } | |
45 | if (code) { | |
46 | fputs(error_message(code), stderr); | |
47 | } | |
48 | if (fmt) { | |
49 | _doprnt(fmt, pvar, stderr); | |
50 | } | |
51 | putc('\n', stderr); | |
52 | fflush(stderr); | |
53 | } | |
54 | ||
55 | void leave(s) | |
56 | char *s; | |
57 | { | |
58 | extern int errno; | |
59 | ||
60 | if (*s) | |
61 | com_err(whoami, errno, "%s: exiting", s); | |
62 | else | |
63 | com_err(whoami, errno, "exiting"); | |
64 | ||
65 | exit(errno); | |
66 | } | |
67 | ||
68 | void scream(argc, argv, hint) | |
69 | int argc; | |
70 | char **argv; | |
71 | int hint; | |
72 | { | |
73 | leave("Programmer botch"); | |
74 | } | |
75 | ||
76 | ||
77 | char *itoa(i) | |
78 | int i; | |
79 | { | |
80 | char buf[20]; | |
81 | ||
82 | sprintf(buf, "%d", i); | |
83 | return(strsave(buf)); | |
84 | } | |
85 | ||
86 | ||
87 | char *tkt_string() | |
88 | { | |
89 | return("/tmp/tkt_dcm"); | |
90 | } | |
91 | ||
92 | ||
93 | int maybe_lock_update(dir, host, service, exclusive) | |
94 | char *dir, *host, *service; | |
95 | int exclusive; | |
96 | { | |
97 | char lock[BUFSIZ]; | |
98 | int fd; | |
99 | ||
100 | sprintf(lock, "%s/dcm/locks/%s.%s", dir, host, service); | |
101 | if ((fd = open(lock, O_TRUNC | O_CREAT, 0)) < 0) | |
102 | com_err(whoami, errno, ": maybe_lock_update: opening %s", lock); | |
103 | else if (flock(fd, (exclusive ? LOCK_EX : LOCK_SH) | LOCK_NB) != 0) { | |
104 | if (errno != EWOULDBLOCK) | |
105 | com_err(whoami, errno, ": maybe_lock_update: flock"); | |
106 | else if (dbg & DBG_VERBOSE) | |
107 | com_err(whoami, 0, "%s already locked\n", lock); | |
108 | close(fd); | |
109 | return -1; | |
110 | } else if (dbg & DBG_VERBOSE) | |
111 | com_err(whoami, 0, "%s now locked\n", lock); | |
112 | return fd; | |
113 | } | |
114 |