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-rw-r--r--lib/libc/gen/auxv.c404
1 files changed, 0 insertions, 404 deletions
diff --git a/lib/libc/gen/auxv.c b/lib/libc/gen/auxv.c
deleted file mode 100644
index 1b0d886030b2..000000000000
--- a/lib/libc/gen/auxv.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright 2010, 2012 Konstantin Belousov <kib@FreeBSD.ORG>.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <sys/cdefs.h>
-#include "namespace.h"
-#include <elf.h>
-#include <errno.h>
-#include <link.h>
-#include <pthread.h>
-#include <string.h>
-#include <sys/auxv.h>
-#include "un-namespace.h"
-#include "libc_private.h"
-
-extern int _DYNAMIC;
-#pragma weak _DYNAMIC
-
-void *__elf_aux_vector;
-static pthread_once_t aux_vector_once = PTHREAD_ONCE_INIT;
-
-static void
-init_aux_vector_once(void)
-{
- Elf_Addr *sp;
-
- sp = (Elf_Addr *)environ;
- while (*sp++ != 0)
- ;
- __elf_aux_vector = (Elf_Auxinfo *)sp;
-}
-
-void
-__init_elf_aux_vector(void)
-{
-
- if (&_DYNAMIC != NULL)
- return;
- _once(&aux_vector_once, init_aux_vector_once);
-}
-
-static pthread_once_t aux_once = PTHREAD_ONCE_INIT;
-static int pagesize, osreldate, canary_len, ncpus, pagesizes_len, bsdflags;
-static int hwcap_present, hwcap2_present;
-static char *canary, *pagesizes, *execpath;
-static void *ps_strings, *timekeep;
-static u_long hwcap, hwcap2;
-static void *fxrng_seed_version;
-static u_long usrstackbase, usrstacklim;
-
-#ifdef __powerpc__
-static int powerpc_new_auxv_format = 0;
-static void _init_aux_powerpc_fixup(void);
-int _powerpc_elf_aux_info(int, void *, int);
-#endif
-
-static void
-init_aux(void)
-{
- Elf_Auxinfo *aux;
-
- for (aux = __elf_aux_vector; aux->a_type != AT_NULL; aux++) {
- switch (aux->a_type) {
- case AT_BSDFLAGS:
- bsdflags = aux->a_un.a_val;
- break;
-
- case AT_CANARY:
- canary = (char *)(aux->a_un.a_ptr);
- break;
-
- case AT_CANARYLEN:
- canary_len = aux->a_un.a_val;
- break;
-
- case AT_EXECPATH:
- execpath = (char *)(aux->a_un.a_ptr);
- break;
-
- case AT_HWCAP:
- hwcap_present = 1;
- hwcap = (u_long)(aux->a_un.a_val);
- break;
-
- case AT_HWCAP2:
- hwcap2_present = 1;
- hwcap2 = (u_long)(aux->a_un.a_val);
- break;
-
- case AT_PAGESIZES:
- pagesizes = (char *)(aux->a_un.a_ptr);
- break;
-
- case AT_PAGESIZESLEN:
- pagesizes_len = aux->a_un.a_val;
- break;
-
- case AT_PAGESZ:
- pagesize = aux->a_un.a_val;
- break;
-
- case AT_OSRELDATE:
- osreldate = aux->a_un.a_val;
- break;
-
- case AT_NCPUS:
- ncpus = aux->a_un.a_val;
- break;
-
- case AT_TIMEKEEP:
- timekeep = aux->a_un.a_ptr;
- break;
-
- case AT_PS_STRINGS:
- ps_strings = aux->a_un.a_ptr;
- break;
-
- case AT_FXRNG:
- fxrng_seed_version = aux->a_un.a_ptr;
- break;
-
- case AT_USRSTACKBASE:
- usrstackbase = aux->a_un.a_val;
- break;
-
- case AT_USRSTACKLIM:
- usrstacklim = aux->a_un.a_val;
- break;
-#ifdef __powerpc__
- /*
- * Since AT_STACKPROT is always set, and the common
- * value 23 is mutually exclusive with the legacy powerpc
- * value 21, the existence of AT_STACKPROT proves we are
- * on the common format.
- */
- case AT_STACKPROT: /* 23 */
- powerpc_new_auxv_format = 1;
- break;
-#endif
- }
- }
-#ifdef __powerpc__
- if (!powerpc_new_auxv_format)
- _init_aux_powerpc_fixup();
-#endif
-}
-
-#ifdef __powerpc__
-static void
-_init_aux_powerpc_fixup(void)
-{
- Elf_Auxinfo *aux;
-
- /*
- * Before 1300070, PowerPC platforms had nonstandard numbering for
- * the aux vector. When running old binaries, the kernel will pass
- * the vector using the old numbering. Reload affected variables.
- */
- for (aux = __elf_aux_vector; aux->a_type != AT_NULL; aux++) {
- switch (aux->a_type) {
- case AT_OLD_CANARY:
- canary = (char *)(aux->a_un.a_ptr);
- break;
- case AT_OLD_CANARYLEN:
- canary_len = aux->a_un.a_val;
- break;
- case AT_OLD_EXECPATH:
- execpath = (char *)(aux->a_un.a_ptr);
- break;
- case AT_OLD_PAGESIZES:
- pagesizes = (char *)(aux->a_un.a_ptr);
- break;
- case AT_OLD_PAGESIZESLEN:
- pagesizes_len = aux->a_un.a_val;
- break;
- case AT_OLD_OSRELDATE:
- osreldate = aux->a_un.a_val;
- break;
- case AT_OLD_NCPUS:
- ncpus = aux->a_un.a_val;
- break;
- }
- }
-}
-
-int
-_powerpc_elf_aux_info(int aux, void *buf, int buflen)
-{
-
- /*
- * If we are in the old auxv format, we need to translate the aux
- * parameter of elf_aux_info() calls into the common auxv format.
- * Internal libc calls always use the common format, and they
- * directly call _elf_aux_info instead of using the weak symbol.
- */
- if (!powerpc_new_auxv_format) {
- switch (aux) {
- case AT_OLD_EXECPATH:
- aux = AT_EXECPATH;
- break;
- case AT_OLD_CANARY:
- aux = AT_CANARY;
- break;
- case AT_OLD_CANARYLEN:
- aux = AT_CANARYLEN;
- break;
- case AT_OLD_OSRELDATE:
- aux = AT_OSRELDATE;
- break;
- case AT_OLD_NCPUS:
- aux = AT_NCPUS;
- break;
- case AT_OLD_PAGESIZES:
- aux = AT_PAGESIZES;
- break;
- case AT_OLD_PAGESIZESLEN:
- aux = AT_PAGESIZESLEN;
- break;
- case AT_OLD_STACKPROT:
- aux = AT_STACKPROT;
- break;
- }
- }
- return _elf_aux_info(aux, buf, buflen);
-}
-__weak_reference(_powerpc_elf_aux_info, elf_aux_info);
-#else
-__weak_reference(_elf_aux_info, elf_aux_info);
-#endif
-
-int
-_elf_aux_info(int aux, void *buf, int buflen)
-{
- int res;
-
- __init_elf_aux_vector();
- if (__elf_aux_vector == NULL)
- return (ENOSYS);
- _once(&aux_once, init_aux);
-
- if (buflen < 0)
- return (EINVAL);
-
- switch (aux) {
- case AT_CANARY:
- if (canary != NULL && canary_len >= buflen) {
- memcpy(buf, canary, buflen);
- memset(canary, 0, canary_len);
- canary = NULL;
- res = 0;
- } else
- res = ENOENT;
- break;
- case AT_EXECPATH:
- if (execpath == NULL)
- res = ENOENT;
- else if (buf == NULL)
- res = EINVAL;
- else {
- if (strlcpy(buf, execpath, buflen) >=
- (unsigned int)buflen)
- res = EINVAL;
- else
- res = 0;
- }
- break;
- case AT_HWCAP:
- if (hwcap_present && buflen == sizeof(u_long)) {
- *(u_long *)buf = hwcap;
- res = 0;
- } else
- res = ENOENT;
- break;
- case AT_HWCAP2:
- if (hwcap2_present && buflen == sizeof(u_long)) {
- *(u_long *)buf = hwcap2;
- res = 0;
- } else
- res = ENOENT;
- break;
- case AT_PAGESIZES:
- if (pagesizes != NULL && pagesizes_len >= buflen) {
- memcpy(buf, pagesizes, buflen);
- res = 0;
- } else
- res = ENOENT;
- break;
- case AT_PAGESZ:
- if (buflen == sizeof(int)) {
- if (pagesize != 0) {
- *(int *)buf = pagesize;
- res = 0;
- } else
- res = ENOENT;
- } else
- res = EINVAL;
- break;
- case AT_OSRELDATE:
- if (buflen == sizeof(int)) {
- if (osreldate != 0) {
- *(int *)buf = osreldate;
- res = 0;
- } else
- res = ENOENT;
- } else
- res = EINVAL;
- break;
- case AT_NCPUS:
- if (buflen == sizeof(int)) {
- if (ncpus != 0) {
- *(int *)buf = ncpus;
- res = 0;
- } else
- res = ENOENT;
- } else
- res = EINVAL;
- break;
- case AT_TIMEKEEP:
- if (buflen == sizeof(void *)) {
- if (timekeep != NULL) {
- *(void **)buf = timekeep;
- res = 0;
- } else
- res = ENOENT;
- } else
- res = EINVAL;
- break;
- case AT_BSDFLAGS:
- if (buflen == sizeof(int)) {
- *(int *)buf = bsdflags;
- res = 0;
- } else
- res = EINVAL;
- break;
- case AT_PS_STRINGS:
- if (buflen == sizeof(void *)) {
- if (ps_strings != NULL) {
- *(void **)buf = ps_strings;
- res = 0;
- } else
- res = ENOENT;
- } else
- res = EINVAL;
- break;
- case AT_FXRNG:
- if (buflen == sizeof(void *)) {
- if (fxrng_seed_version != NULL) {
- *(void **)buf = fxrng_seed_version;
- res = 0;
- } else
- res = ENOENT;
- } else
- res = EINVAL;
- break;
- case AT_USRSTACKBASE:
- if (buflen == sizeof(u_long)) {
- if (usrstackbase != 0) {
- *(u_long *)buf = usrstackbase;
- res = 0;
- } else
- res = ENOENT;
- } else
- res = EINVAL;
- break;
- case AT_USRSTACKLIM:
- if (buflen == sizeof(u_long)) {
- if (usrstacklim != 0) {
- *(u_long *)buf = usrstacklim;
- res = 0;
- } else
- res = ENOENT;
- } else
- res = EINVAL;
- break;
- default:
- res = ENOENT;
- break;
- }
- return (res);
-}
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