14e179ddaSchristos /*
24e179ddaSchristos * Copyright (c) 2017 Nicholas Marriott <nicholas.marriott@gmail.com>
34e179ddaSchristos *
44e179ddaSchristos * Permission to use, copy, modify, and distribute this software for any
54e179ddaSchristos * purpose with or without fee is hereby granted, provided that the above
64e179ddaSchristos * copyright notice and this permission notice appear in all copies.
74e179ddaSchristos *
84e179ddaSchristos * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
94e179ddaSchristos * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
104e179ddaSchristos * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
114e179ddaSchristos * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
124e179ddaSchristos * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
134e179ddaSchristos * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
144e179ddaSchristos * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
154e179ddaSchristos */
164e179ddaSchristos
174e179ddaSchristos #include <sys/types.h>
184e179ddaSchristos
194e179ddaSchristos #include <glob.h>
204e179ddaSchristos #include <unistd.h>
214e179ddaSchristos
224e179ddaSchristos #include "compat.h"
234e179ddaSchristos
244e179ddaSchristos void fatal(const char *, ...);
254e179ddaSchristos void fatalx(const char *, ...);
264e179ddaSchristos
274e179ddaSchristos #ifdef HAVE_PROC_PID
284e179ddaSchristos int
getdtablecount(void)294e179ddaSchristos getdtablecount(void)
304e179ddaSchristos {
314e179ddaSchristos char path[PATH_MAX];
324e179ddaSchristos glob_t g;
33*8f3b9483Schristos int n = 0;
344e179ddaSchristos
354e179ddaSchristos if (snprintf(path, sizeof path, "/proc/%ld/fd/*", (long)getpid()) < 0)
364e179ddaSchristos fatal("snprintf overflow");
37*8f3b9483Schristos if (glob(path, 0, NULL, &g) == 0)
384e179ddaSchristos n = g.gl_pathc;
394e179ddaSchristos globfree(&g);
404e179ddaSchristos return (n);
414e179ddaSchristos }
424e179ddaSchristos #else
434e179ddaSchristos int
getdtablecount(void)444e179ddaSchristos getdtablecount(void)
454e179ddaSchristos {
464e179ddaSchristos return (0);
474e179ddaSchristos }
484e179ddaSchristos #endif
49