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/* Print kernel diagnostics data in ld.so. Linux version.
Copyright (C) 2021-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <dl-diagnostics.h>
#include <ldsodefs.h>
#include <sys/utsname.h>
/* Dump the auxiliary vector to standard output. */
static void
print_auxv (void)
{
/* See _dl_show_auxv. The code below follows the general output
format for diagnostic dumps. */
unsigned int index = 0;
for (ElfW(auxv_t) *av = GLRO(dl_auxv); av->a_type != AT_NULL; ++av)
{
_dl_printf ("auxv[0x%x].a_type=0x%lx\n"
"auxv[0x%x].a_val",
index, (unsigned long int) av->a_type, index);
if (av->a_type == AT_EXECFN
|| av->a_type == AT_PLATFORM
|| av->a_type == AT_BASE_PLATFORM)
{
/* The address of the strings is not useful at all, so print
the strings themselves. */
_dl_printf ("_string=");
_dl_diagnostics_print_string ((const char *) av->a_un.a_val);
}
else
_dl_printf ("=0x%lx", (unsigned long int) av->a_un.a_val);
_dl_printf ("\n");
++index;
}
}
/* Print one uname entry. */
static void
print_utsname_entry (const char *field, const char *value)
{
_dl_printf ("uname.");
_dl_diagnostics_print_labeled_string (field, value);
}
/* Print information from uname, including the kernel version. */
static void
print_uname (void)
{
struct utsname uts;
if (__uname (&uts) == 0)
{
print_utsname_entry ("sysname", uts.sysname);
print_utsname_entry ("nodename", uts.nodename);
print_utsname_entry ("release", uts.release);
print_utsname_entry ("version", uts.version);
print_utsname_entry ("machine", uts.machine);
print_utsname_entry ("domainname", uts.domainname);
}
}
void
_dl_diagnostics_kernel (void)
{
print_auxv ();
print_uname ();
}
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