-
Notifications
You must be signed in to change notification settings - Fork 183
/
filan_main.c
248 lines (233 loc) · 7 KB
/
filan_main.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/* source: filan_main.c */
/* Copyright Gerhard Rieger 2001-2008 */
/* Published under the GNU General Public License V.2, see file COPYING */
const char copyright[] = "filan by Gerhard Rieger - see http://www.dest-unreach.org/socat/";
#include "config.h"
#include "xioconfig.h"
#include "sysincludes.h"
#include "mytypes.h"
#include "compat.h"
#include "error.h"
#include "sycls.h"
#include "filan.h"
#define WITH_HELP 1
static void filan_usage(FILE *fd);
int main(int argc, const char *argv[]) {
const char **arg1, *a;
const char *filename = NULL, *waittimetxt;
unsigned int m = 0; /* first FD (default) */
unsigned int n = FD_SETSIZE; /* last excl. */
unsigned int i;
int style = 0;
struct timespec waittime = { 0, 0 };
FILE *fdout = stdout;
const char *outfname = NULL;
unsigned long fildes;
diag_set('p', strchr(argv[0], '/') ? strrchr(argv[0], '/')+1 : argv[0]);
arg1 = argv+1; --argc;
while (arg1[0] && (arg1[0][0] == '-')) {
switch (arg1[0][1]) {
#if WITH_HELP
case '?': case 'h':
filan_usage(stdout); exit(0);
#endif
#if LATER
case 'V': filan_version(stdout); exit(0);
#endif
case 'L': filan_followsymlinks = true; break;
case 'd': diag_set('d', NULL); break;
case 's': style = 1; break;
case 'r': filan_rawoutput = true; break;
case 'i': if (arg1[0][2]) {
a = *arg1+2;
} else {
++arg1, --argc;
if ((a = *arg1) == NULL) {
Error("option -i requires an argument");
filan_usage(stderr); exit(1);
}
}
m = strtoul(a, (char **)&a, 0);
n = m;
break;
case 'n': if (arg1[0][2]) {
a = *arg1+2;
} else {
++arg1, --argc;
if ((a = *arg1) == NULL) {
Error("option -n requires an argument");
filan_usage(stderr); exit(1);
}
}
n = strtoul(a, (char **)&a, 0);
break;
case 'f': if (arg1[0][2]) {
filename = *arg1+2;
} else {
++arg1, --argc;
if ((filename = *arg1) == NULL) {
Error("option -f requires an argument");
filan_usage(stderr); exit(1);
}
}
break;
case 'T': if (arg1[0][2]) {
waittimetxt = *arg1+2;
} else {
++arg1, --argc;
if ((waittimetxt = *arg1) == NULL) {
Error("option -T requires an argument");
filan_usage(stderr); exit(1);
}
}
{
double waittimedbl;
waittimedbl = strtod(waittimetxt, NULL);
waittime.tv_sec = waittimedbl;
waittime.tv_nsec = (waittimedbl-waittime.tv_sec) * 1000000000;
}
break;
case 'o': if (arg1[0][2]) {
outfname = *arg1+2;
} else {
++arg1, --argc;
if ((outfname = *arg1) == NULL) {
Error("option -o requires an argument");
filan_usage(stderr); exit(1);
}
}
break;
case '\0': break;
default:
diag_set_int('e', E_FATAL);
Error1("unknown option %s", arg1[0]);
#if WITH_HELP
filan_usage(stderr);
#endif
exit(1);
}
#if 0
if (arg1[0][1] == '\0')
break;
#endif
++arg1; --argc;
}
if (argc != 0) {
Error1("%d superfluous arguments", argc);
filan_usage(stderr);
exit(1);
}
if (outfname) {
/* special cases */
if (!strcmp(outfname,"stdin")) { fdout=stdin; }
else if (!strcmp(outfname,"stdout")) { fdout=stdout; }
else if (!strcmp(outfname,"stderr")) { fdout=stderr; }
/* file descriptor */
else if (*outfname == '+') {
a = outfname+1;
fildes = strtoul(a, (char **)&a, 0);
if ((fdout = fdopen(fildes, "w")) == NULL) {
Error2("can't fdopen file descriptor %lu: %s\n", fildes, strerror(errno));
exit(1);
}
} else {
/* file name */
if ((fdout = fopen(outfname, "w")) == NULL) {
Error2("can't fopen '%s': %s\n",
outfname, strerror(errno));
exit(1);
}
}
}
Nanosleep(&waittime, NULL);
if (style == 0) {
/* this style gives detailled infos, but requires a file descriptor */
if (filename) {
#if LATER /* this is just in case that S_ISSOCK does not work */
struct stat buf;
int fd;
if (Stat(filename, &buf) < 0) {
Error3("stat(\"%s\", %p): %s", filename, &buf, strerror(errno));
}
/* note: when S_ISSOCK was undefined, it always gives 0 */
if (S_ISSOCK(buf.st_mode)) {
Error("cannot analyze UNIX domain socket");
}
#endif
filan_file(filename, fdout);
} else {
if (m == n) {
++n;
}
for (i = m; i < n; ++i) {
filan_fd(i, fdout);
}
}
} else {
/* this style gives only type and path / socket addresses, and works from
file descriptor or filename (with restrictions) */
if (filename) {
/* filename: NULL means yet unknown; "" means no name at all */
#if LATER
int fd;
if ((fd =
Open(filename, O_RDONLY|O_NOCTTY|O_NONBLOCK
#ifdef O_LARGEFILE
|O_LARGEFILE
#endif
, 0700))
< 0) {
Debug2("open(\"%s\", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_LARGEFILE, 0700): %s",
filename, strerror(errno));
}
fdname(filename, fd, fdout, NULL);
#endif
fdname(filename, -1, fdout, NULL);
} else {
if (m == n) {
fdname("", m, fdout, NULL);
} else {
for (i = m; i < n; ++i) {
fdname("", i, fdout, "%5u ");
}
}
}
}
if (outfname && fdout != stdout && fdout != stderr) {
fclose(fdout);
}
return 0;
}
#if WITH_HELP
static void filan_usage(FILE *fd) {
fputs(copyright, fd); fputc('\n', fd);
fputs("Analyze file descriptors of the process\n", fd);
fputs("Usage:\n", fd);
fputs("filan [options]\n", fd);
fputs(" options:\n", fd);
#if LATER
fputs(" -V print version information to stdout, and exit\n", fd);
#endif
#if WITH_HELP
fputs(" -?|-h print this help text\n", fd);
fputs(" -d increase verbosity (use up to 4 times)\n", fd);
#endif
#if 0
fputs(" -ly[facility] log to syslog, using facility (default is daemon)\n", fd);
fputs(" -lf<logfile> log to file\n", fd);
fputs(" -ls log to stderr (default if no other log)\n", fd);
#endif
fputs(" -i<fdnum> only analyze this fd\n", fd);
fprintf(fd, " -n<fdnum> analyze all fds from 0 up to fdnum-1 (default: %u)\n", FD_SETSIZE);
fputs(" -s simple output with just type and socket address or path\n", fd);
/* fputs(" -c alternate device visualization\n", fd);*/
fputs(" -f<filename> analyze file system entry\n", fd);
fputs(" -T<seconds> wait before analyzing, useful to connect with debugger\n", fd);
fputs(" -r raw output for time stamps and rdev\n", fd);
fputs(" -L show symlink properties instead of following it\n", fd);
fputs(" -o<filename> output goes to filename, that can be:\n", fd);
fputs(" a regular file name, the output goes to that\n", fd);
fputs(" +<filedes> , output goes to the file descriptor (which must be open writable)\n", fd);
fputs(" the 3 special names stdin stdout and stderr\n", fd);
}
#endif /* WITH_HELP */