Annotation of src/usr.bin/file/file.h, Revision 1.1.1.1
1.1 deraadt 1: /*
2: * file.h - definitions for file(1) program
3: * @(#)$Id: file.h,v 1.7 1995/05/21 00:13:30 christos Exp $
4: *
5: * Copyright (c) Ian F. Darwin, 1987.
6: * Written by Ian F. Darwin.
7: *
8: * This software is not subject to any license of the American Telephone
9: * and Telegraph Company or of the Regents of the University of California.
10: *
11: * Permission is granted to anyone to use this software for any purpose on
12: * any computer system, and to alter it and redistribute it freely, subject
13: * to the following restrictions:
14: *
15: * 1. The author is not responsible for the consequences of use of this
16: * software, no matter how awful, even if they arise from flaws in it.
17: *
18: * 2. The origin of this software must not be misrepresented, either by
19: * explicit claim or by omission. Since few users ever read sources,
20: * credits must appear in the documentation.
21: *
22: * 3. Altered versions must be plainly marked as such, and must not be
23: * misrepresented as being the original software. Since few users
24: * ever read sources, credits must appear in the documentation.
25: *
26: * 4. This notice may not be removed or altered.
27: */
28:
29: #ifndef HOWMANY
30: # define HOWMANY 8192 /* how much of the file to look at */
31: #endif
32: #define MAXMAGIS 1000 /* max entries in /etc/magic */
33: #define MAXDESC 50 /* max leng of text description */
34: #define MAXstring 32 /* max leng of "string" types */
35:
36: struct magic {
37: short flag;
38: #define INDIR 1 /* if '>(...)' appears, */
39: #define UNSIGNED 2 /* comparison is unsigned */
40: short cont_level; /* level of ">" */
41: struct {
42: char type; /* byte short long */
43: long offset; /* offset from indirection */
44: } in;
45: long offset; /* offset to magic number */
46: unsigned char reln; /* relation (0=eq, '>'=gt, etc) */
47: char type; /* int, short, long or string. */
48: char vallen; /* length of string value, if any */
49: #define BYTE 1
50: #define SHORT 2
51: #define LONG 4
52: #define STRING 5
53: #define DATE 6
54: #define BESHORT 7
55: #define BELONG 8
56: #define BEDATE 9
57: #define LESHORT 10
58: #define LELONG 11
59: #define LEDATE 12
60: union VALUETYPE {
61: unsigned char b;
62: unsigned short h;
63: unsigned long l;
64: char s[MAXstring];
65: unsigned char hs[2]; /* 2 bytes of a fixed-endian "short" */
66: unsigned char hl[4]; /* 2 bytes of a fixed-endian "long" */
67: } value; /* either number or string */
68: unsigned long mask; /* mask before comparison with value */
69: char nospflag; /* supress space character */
70: char desc[MAXDESC]; /* description */
71: };
72:
73: #include <stdio.h> /* Include that here, to make sure __P gets defined */
74:
75: #ifndef __P
76: # if __STDC__ || __cplusplus
77: # define __P(a) a
78: # else
79: # define __P(a) ()
80: # define const
81: # endif
82: #endif
83:
84: extern int apprentice __P((char *, int));
85: extern int ascmagic __P((unsigned char *, int));
86: extern void error __P((const char *, ...));
87: extern void ckfputs __P((const char *, FILE *));
88: struct stat;
89: extern int fsmagic __P((const char *, struct stat *));
90: extern int is_compress __P((const unsigned char *, int *));
91: extern int is_tar __P((unsigned char *, int));
92: extern void magwarn __P((const char *, ...));
93: extern void mdump __P((struct magic *));
94: extern void process __P((const char *, int));
95: extern void showstr __P((FILE *, const char *, int));
96: extern int softmagic __P((unsigned char *, int));
97: extern int tryit __P((unsigned char *, int, int));
98: extern int zmagic __P((unsigned char *, int));
99: extern void ckfprintf __P((FILE *, const char *, ...));
100: extern unsigned long signextend __P((struct magic *, unsigned long));
101:
102:
103:
104: extern int errno; /* Some unixes don't define this.. */
105:
106: extern char *progname; /* the program name */
107: extern char *magicfile; /* name of the magic file */
108: extern int lineno; /* current line number in magic file */
109:
110: extern struct magic *magic; /* array of magic entries */
111: extern int nmagic; /* number of valid magic[]s */
112:
113:
114: extern int debug; /* enable debugging? */
115: extern int zflag; /* process compressed files? */
116: extern int lflag; /* follow symbolic links? */
117:
118: extern int optind; /* From getopt(3) */
119: extern char *optarg;
120:
121: #if !defined(__STDC__) || defined(sun) || defined(__sun__) || defined(__convex__)
122: extern int sys_nerr;
123: extern char *sys_errlist[];
124: #define strerror(e) \
125: (((e) >= 0 && (e) < sys_nerr) ? sys_errlist[(e)] : "Unknown error")
126: #define strtoul(a, b, c) strtol(a, b, c)
127: #endif
128:
129: #ifndef MAXPATHLEN
130: #define MAXPATHLEN 512
131: #endif
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