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Vendor import of NetBSD's libexecinfo at 2013-08-29

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This commit is contained in:
Ed Maste 2013-08-29 15:20:12 +00:00
parent 28df749925
commit 06d02944c7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/vendor/NetBSD/libexecinfo/dist/; revision=255025
svn path=/vendor/NetBSD/libexecinfo/20130829/; revision=255026; tag=vendor/NetBSD/libexecinfo/20130829
3 changed files with 28 additions and 7 deletions
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4
backtrace.3
View File

@ -1,4 +1,4 @@
.\" $NetBSD: backtrace.3,v 1.4 2012/06/10 00:24:36 christos Exp $
.\" $NetBSD: backtrace.3,v 1.5 2013/08/22 17:08:43 christos Exp $
.\"
.\" Copyright (c) 2012 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -116,7 +116,7 @@ on failure.
.Sh RETURN VALUES
The
.Fn backtrace
function returns the number of elements tht were filled in the backtrace.
function returns the number of elements that were filled in the backtrace.
The
.Fn backtrace_symbols
and

26
backtrace.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: backtrace.c,v 1.2 2012/07/09 03:11:59 christos Exp $ */
/* $NetBSD: backtrace.c,v 1.3 2013/08/29 14:58:56 christos Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
@ -29,7 +29,7 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: backtrace.c,v 1.2 2012/07/09 03:11:59 christos Exp $");
__RCSID("$NetBSD: backtrace.c,v 1.3 2013/08/29 14:58:56 christos Exp $");
#include <sys/param.h>
#include <assert.h>
@ -50,9 +50,29 @@ __RCSID("$NetBSD: backtrace.c,v 1.2 2012/07/09 03:11:59 christos Exp $");
#ifdef __linux__
#define SELF "/proc/self/exe"
#else
#include <sys/sysctl.h>
#define SELF "/proc/curproc/file"
#endif
static int
open_self(int flags)
{
const char *pathname = SELF;
#ifdef KERN_PROC_PATHNAME
static const int name[] = {
CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1,
};
char path[MAXPATHLEN];
size_t len;
len = sizeof(path);
if (sysctl(name, __arraycount(name), path, &len, NULL, 0) != -1)
pathname = path;
#endif
return open(pathname, flags);
}
static int __printflike(4, 5)
rasprintf(char **buf, size_t *bufsiz, size_t offs, const char *fmt, ...)
{
@ -162,7 +182,7 @@ backtrace_symbols_fmt(void *const *trace, size_t len, const char *fmt)
symtab_t *st;
int fd;
if ((fd = open(SELF, O_RDONLY)) != -1)
if ((fd = open_self(O_RDONLY)) != -1)
st = symtab_create(fd, -1, STT_FUNC);
else
st = NULL;

5
symtab.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: symtab.c,v 1.1 2012/05/26 22:02:29 christos Exp $ */
/* $NetBSD: symtab.c,v 1.2 2013/08/29 15:01:57 christos Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
@ -29,11 +29,12 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: symtab.c,v 1.1 2012/05/26 22:02:29 christos Exp $");
__RCSID("$NetBSD: symtab.c,v 1.2 2013/08/29 15:01:57 christos Exp $");
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <err.h>
#include <dlfcn.h>