diff options
Diffstat (limited to 'osdep-openbsd.c')
-rw-r--r-- | osdep-openbsd.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/osdep-openbsd.c b/osdep-openbsd.c new file mode 100644 index 00000000..2a6a7d1d --- /dev/null +++ b/osdep-openbsd.c @@ -0,0 +1,63 @@ +/* $Id: osdep-openbsd.c,v 1.1 2009-01-20 19:35:03 nicm Exp $ */ + +/* + * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER + * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifdef __OpenBSD__ + +#include <sys/param.h> +#include <sys/sysctl.h> + +#include <err.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +char *get_argv0(pid_t); + +char * +get_argv0(pid_t pgrp) +{ + int mib[4] = { CTL_KERN, KERN_PROC_ARGS, 0, KERN_PROC_ARGV }; + size_t size; + char **args, **args2, *procname; + + procname = NULL; + + mib[2] = pgrp; + + args = NULL; + size = 128; + while (size < SIZE_MAX / 2) { + size *= 2; + if ((args2 = realloc(args, 2 * size)) == NULL) + break; + args = args2; + if (sysctl(mib, 4, args, &size, NULL, 0) == -1) { + if (errno == ENOMEM) + continue; + break; + } + procname = strdup(*args); + break; + } + free(args); + + return (procname); +} + +#endif |