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65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
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/* $Id: osdep-freebsd.c,v 1.1 2009-01-20 19:35:03 nicm Exp $ */
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/*
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* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
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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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#ifdef __FreeBSD__
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <err.h>
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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char *get_argv0(pid_t);
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char *
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get_argv0(pid_t pgrp)
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{
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int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_ARGS, 0 };
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size_t size;
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char *args, *args2, *procname;
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procname = NULL;
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mib[3] = pgrp;
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args = NULL;
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size = 128;
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while (size < SIZE_MAX / 2) {
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size *= 2;
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if ((args2 = realloc(args, 2 * size)) == NULL)
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break;
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args = args2;
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if (sysctl(mib, 4, args, &size, NULL, 0) == -1) {
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if (errno == ENOMEM)
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continue;
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break;
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}
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procname = strdup(args);
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break;
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}
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free(args);
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return (procname);
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}
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#endif
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