1 /**
2 * Fd-enum is a simple tool to list open file descriptors of a pid by type
3 * Copyright (C) 2023 Aaron Ball <nullspoon@oper.io>
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18 #include "config.h"
19
20 void get_help() {
21 puts("Usage: \n\
22 -d, --dead Print list of dead file descriptors (deleted but still open)\n\
23 -i, --inodes Print list of inode file descriptors\n\
24 -l, --live Print list of live file descriptors (open and existing)\n\
25 -p, --pipes Print list of pipe file descriptors\n\
26 -s, --sockets Print list of socket file descriptors\n\
27 \n\
28 -n, --no-stats Hide file descriptor statistics\n\
29 -sf, --sizefd Show total size of dead and live file descriptors\n\
30 -sd, --sizedead Show total size of dead file descriptors\n\
31 -sl, --sizelive Show total size of live file descriptors\n\
32 --truncate-dead Truncate dead file descriptors\n\
33 -h, --help Print this help text\n\
34 ");
35 }
36
37 int config_from_argv(struct config* c, int argc, char* argv[]) {
38 int i = 1;
39 while(i < argc) {
40 if(strcmp(argv[i], "-d") == 0 || strcmp(argv[i], "--dead") == 0) {
41 c->dead = 1;
42 } else if(strcmp(argv[i], "--truncate-dead") == 0) {
43 c->truncate_dead = 1;
44 } else if(strcmp(argv[i], "-l") == 0 || strcmp(argv[i], "--live") == 0) {
45 c->live = 1;
46 } else if(strcmp(argv[i], "-s") == 0 || strcmp(argv[i], "--sockets") == 0) {
47 c->sockets = 1;
48 } else if(strcmp(argv[i], "-i") == 0 || strcmp(argv[i], "--inodes") == 0) {
49 c->inodes = 1;
50 } else if(strcmp(argv[i], "-p") == 0 || strcmp(argv[i], "--pipes") == 0) {
51 c->pipes = 1;
52 } else if(strcmp(argv[i], "-n") == 0 || strcmp(argv[i], "--no-stats") == 0) {
53 c->showstats = 0;
54 } else if(strcmp(argv[i], "-sfd") == 0 || strcmp(argv[i], "--sizefd") == 0) {
55 c->showsizefd = 1;
56 } else if(strcmp(argv[i], "-sd") == 0 || strcmp(argv[i], "--sizedead") == 0) {
57 c->showsizedead = 1;
58 } else if(strcmp(argv[i], "-sl") == 0 || strcmp(argv[i], "--sizelive") == 0) {
59 c->showsizelive = 1;
60 } else if(strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
61 get_help();
62 return 1;
63 } else if(argv[i][0] == '-') {
64 fprintf(stderr, "Unknown argument \"%s\"\n", argv[i]);
65 return 1;
66 } else {
67 c->pid = strtol(argv[i], NULL, 10);
68 }
69
70 i++;
71 }
72
73 if(c->pid == -1) {
74 fprintf(stderr, "Must specify valid pid\n");
75 return 2;
76 }
77 return 0;
78 }
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