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56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* Copyright (c) 2017 Nicholas Marriott <nicholas.marriott@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <glob.h>
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#include <unistd.h>
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#include "compat.h"
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void fatal(const char *, ...);
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void fatalx(const char *, ...);
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#ifdef HAVE_PROC_PID
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int
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getdtablecount(void)
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{
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char path[PATH_MAX];
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glob_t g;
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int n;
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if (snprintf(path, sizeof path, "/proc/%ld/fd/*", (long)getpid()) < 0)
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fatal("snprintf overflow");
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switch (glob(path, 0, NULL, &g)) {
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case GLOB_NOMATCH:
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return (0);
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case 0:
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break;
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default:
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fatal("glob(\"%s\") failed", path);
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}
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n = g.gl_pathc;
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globfree(&g);
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return (n);
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}
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#else
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int
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getdtablecount(void)
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{
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return (0);
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}
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#endif
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