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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2016 Joyent, Inc.
*/
#include <sys/auxv.h>
#include <sys/lx_brand.h>
/*
* Linux does not make the distinction between 'int' and 'long' when it comes
* to the format of the aux vector. In order to properly clear the struct
* padding present in the native auxv_t in 64-bit, we employ the Linux format.
*/
struct lx_auxv {
long la_type;
long la_val;
};
int
lx_auxv_stol(const auxv_t *ap, auxv_t *oap, const lx_elf_data_t *edp)
{
struct lx_auxv *loap = (struct lx_auxv *)oap;
switch (ap->a_type) {
case AT_BASE:
loap->la_val = edp->ed_base;
break;
case AT_ENTRY:
loap->la_val = edp->ed_entry;
break;
case AT_PHDR:
loap->la_val = edp->ed_phdr;
break;
case AT_PHENT:
loap->la_val = edp->ed_phent;
break;
case AT_PHNUM:
loap->la_val = edp->ed_phnum;
break;
case AT_SUN_BRAND_LX_SYSINFO_EHDR:
loap->la_type = AT_SYSINFO_EHDR;
loap->la_val = ap->a_un.a_val;
return (0);
case AT_SUN_BRAND_LX_CLKTCK:
loap->la_type = AT_CLKTCK;
loap->la_val = ap->a_un.a_val;
return (0);
case AT_SUN_AUXFLAGS:
if ((ap->a_un.a_val & AF_SUN_SETUGID) != 0) {
loap->la_type = AT_SECURE;
loap->la_val = 1;
return (0);
} else {
return (1);
}
case AT_SUN_GID:
loap->la_type = AT_LX_EGID;
loap->la_val = ap->a_un.a_val;
return (0);
case AT_SUN_RGID:
loap->la_type = AT_LX_GID;
loap->la_val = ap->a_un.a_val;
return (0);
case AT_SUN_UID:
loap->la_type = AT_LX_EUID;
loap->la_val = ap->a_un.a_val;
return (0);
case AT_SUN_RUID:
loap->la_type = AT_LX_UID;
loap->la_val = ap->a_un.a_val;
return (0);
case AT_EXECFD:
case AT_PAGESZ:
case AT_FLAGS:
case AT_RANDOM:
case AT_NULL:
/* No translate needed */
loap->la_val = ap->a_un.a_val;
break;
default:
/* All other unrecognized entries are ignored */
return (1);
}
loap->la_type = ap->a_type;
return (0);
}
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