1 | /* |
2 | * Copyright (c) 2017 Nicholas Marriott <[email protected]> |
3 | * |
4 | * Permission to use, copy, modify, and distribute this software for any |
5 | * purpose with or without fee is hereby granted, provided that the above |
6 | * copyright notice and this permission notice appear in all copies. |
7 | * |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
12 | * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER |
13 | * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
14 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
15 | */ |
16 | |
17 | #include <sys/types.h> |
18 | |
19 | #include <glob.h> |
20 | #include <unistd.h> |
21 | |
22 | #include "compat.h" |
23 | |
24 | void fatal(const char *, ...); |
25 | void fatalx(const char *, ...); |
26 | |
27 | #ifdef HAVE_PROC_PID |
28 | int |
29 | getdtablecount(void) |
30 | { |
31 | char path[PATH_MAX]; |
32 | glob_t g; |
33 | int n = 0; |
34 | |
35 | if (snprintf(path, sizeof path, "/proc/%ld/fd/*" , (long)getpid()) < 0) |
36 | fatal("snprintf overflow" ); |
37 | if (glob(path, 0, NULL, &g) == 0) |
38 | n = g.gl_pathc; |
39 | globfree(&g); |
40 | return (n); |
41 | } |
42 | #else |
43 | int |
44 | getdtablecount(void) |
45 | { |
46 | return (0); |
47 | } |
48 | #endif |
49 | |