Annotation of src/usr.bin/file/file.h, Revision 1.9
1.9 ! millert 1: /* $OpenBSD: file.h,v 1.8 2002/02/16 21:27:46 millert Exp $ */
1.3 millert 2:
1.1 deraadt 3: /*
4: * file.h - definitions for file(1) program
5: *
6: * Copyright (c) Ian F. Darwin, 1987.
7: * Written by Ian F. Darwin.
8: *
9: * This software is not subject to any license of the American Telephone
10: * and Telegraph Company or of the Regents of the University of California.
11: *
12: * Permission is granted to anyone to use this software for any purpose on
13: * any computer system, and to alter it and redistribute it freely, subject
14: * to the following restrictions:
15: *
16: * 1. The author is not responsible for the consequences of use of this
17: * software, no matter how awful, even if they arise from flaws in it.
18: *
19: * 2. The origin of this software must not be misrepresented, either by
20: * explicit claim or by omission. Since few users ever read sources,
21: * credits must appear in the documentation.
22: *
23: * 3. Altered versions must be plainly marked as such, and must not be
24: * misrepresented as being the original software. Since few users
25: * ever read sources, credits must appear in the documentation.
26: *
27: * 4. This notice may not be removed or altered.
28: */
29:
1.3 millert 30: #ifndef __file_h__
31: #define __file_h__
32:
1.6 deraadt 33: typedef int8_t int8;
1.3 millert 34: typedef int32_t int32;
35: typedef u_int32_t uint32;
36:
1.1 deraadt 37: #ifndef HOWMANY
38: # define HOWMANY 8192 /* how much of the file to look at */
39: #endif
1.7 ian 40: #define MAXMAGIS 5000 /* max entries in /etc/magic */
1.1 deraadt 41: #define MAXDESC 50 /* max leng of text description */
42: #define MAXstring 32 /* max leng of "string" types */
43:
44: struct magic {
45: short flag;
46: #define INDIR 1 /* if '>(...)' appears, */
47: #define UNSIGNED 2 /* comparison is unsigned */
1.3 millert 48: #define ADD 4 /* if '>&' appears, */
1.1 deraadt 49: short cont_level; /* level of ">" */
50: struct {
1.6 deraadt 51: int8 type; /* byte short long */
1.3 millert 52: int32 offset; /* offset from indirection */
1.1 deraadt 53: } in;
1.3 millert 54: int32 offset; /* offset to magic number */
1.1 deraadt 55: unsigned char reln; /* relation (0=eq, '>'=gt, etc) */
1.6 deraadt 56: int8 type; /* int, short, long or string. */
1.1 deraadt 57: char vallen; /* length of string value, if any */
58: #define BYTE 1
59: #define SHORT 2
60: #define LONG 4
61: #define STRING 5
62: #define DATE 6
63: #define BESHORT 7
64: #define BELONG 8
65: #define BEDATE 9
66: #define LESHORT 10
67: #define LELONG 11
68: #define LEDATE 12
69: union VALUETYPE {
70: unsigned char b;
71: unsigned short h;
1.3 millert 72: uint32 l;
1.1 deraadt 73: char s[MAXstring];
74: unsigned char hs[2]; /* 2 bytes of a fixed-endian "short" */
75: unsigned char hl[4]; /* 2 bytes of a fixed-endian "long" */
76: } value; /* either number or string */
1.3 millert 77: uint32 mask; /* mask before comparison with value */
1.1 deraadt 78: char nospflag; /* supress space character */
79: char desc[MAXDESC]; /* description */
80: };
81:
1.8 millert 82: extern int apprentice(char *, int);
83: extern int ascmagic(unsigned char *, int);
84: extern void ckfputs(const char *, FILE *);
1.1 deraadt 85: struct stat;
1.8 millert 86: extern int fsmagic(const char *, struct stat *);
87: extern int is_compress(const unsigned char *, int *);
88: extern int is_tar(unsigned char *, int);
89: extern void mdump(struct magic *);
90: extern void process(const char *, int);
91: extern void showstr(FILE *, const char *, int);
92: extern int softmagic(unsigned char *, int);
93: extern int tryit(unsigned char *, int, int);
94: extern int zmagic(unsigned char *, int);
95: extern void ckfprintf(FILE *, const char *, ...);
96: extern uint32 signextend(struct magic *, unsigned int32);
97: extern int internatmagic(unsigned char *, int);
98: extern void tryelf(int, char *, int);
1.1 deraadt 99:
100:
101: extern int errno; /* Some unixes don't define this.. */
102:
103: extern char *progname; /* the program name */
104: extern char *magicfile; /* name of the magic file */
105: extern int lineno; /* current line number in magic file */
106:
107: extern struct magic *magic; /* array of magic entries */
108: extern int nmagic; /* number of valid magic[]s */
109:
110:
111: extern int debug; /* enable debugging? */
112: extern int zflag; /* process compressed files? */
113: extern int lflag; /* follow symbolic links? */
114:
115: extern int optind; /* From getopt(3) */
116: extern char *optarg;
117:
1.3 millert 118: #if defined(sun) || defined(__sun__) || defined (__sun)
119: # if defined(__svr4) || defined (__SVR4) || defined(__svr4__)
120: # define SOLARIS
121: # else
122: # define SUNOS
123: # endif
124: #endif
125:
126:
127: #if !defined(__STDC__) || defined(SUNOS) || defined(__convex__)
1.1 deraadt 128: extern int sys_nerr;
129: extern char *sys_errlist[];
130: #define strerror(e) \
131: (((e) >= 0 && (e) < sys_nerr) ? sys_errlist[(e)] : "Unknown error")
132: #define strtoul(a, b, c) strtol(a, b, c)
133: #endif
134:
135: #ifndef MAXPATHLEN
136: #define MAXPATHLEN 512
137: #endif
1.3 millert 138:
139: #endif /* __file_h__ */
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