Differential D22355 Diff 64389 head/sys/kern/imgact_elf.c

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head/sys/kern/imgact_elf.c

Show First 20 Lines • Show All 1,283 Lines • ▼ Show 20 Lines	error = __elfN(load_interp)(imgp, brand_info, interp, &addr,
&imgp->entry_addr);		&imgp->entry_addr);
vn_lock(imgp->vp, LK_SHARED \| LK_RETRY);		vn_lock(imgp->vp, LK_SHARED \| LK_RETRY);
if (error != 0)		if (error != 0)
goto ret;		goto ret;
} else		} else
addr = et_dyn_addr;		addr = et_dyn_addr;

/*		/*
* Construct auxargs table (used by the fixup routine)		* Construct auxargs table (used by the copyout_auxargs routine)
*/		*/
elf_auxargs = malloc(sizeof(Elf_Auxargs), M_TEMP, M_NOWAIT);		elf_auxargs = malloc(sizeof(Elf_Auxargs), M_TEMP, M_NOWAIT);
if (elf_auxargs == NULL) {		if (elf_auxargs == NULL) {
VOP_UNLOCK(imgp->vp, 0);		VOP_UNLOCK(imgp->vp, 0);
elf_auxargs = malloc(sizeof(Elf_Auxargs), M_TEMP, M_WAITOK);		elf_auxargs = malloc(sizeof(Elf_Auxargs), M_TEMP, M_WAITOK);
vn_lock(imgp->vp, LK_SHARED \| LK_RETRY);		vn_lock(imgp->vp, LK_SHARED \| LK_RETRY);
}		}
elf_auxargs->execfd = -1;		elf_auxargs->execfd = -1;
Show All 17 Lines
ret:		ret:
if (free_interp)		if (free_interp)
free(interp, M_TEMP);		free(interp, M_TEMP);
return (error);		return (error);
}		}

#define suword __CONCAT(suword, __ELF_WORD_SIZE)		#define suword __CONCAT(suword, __ELF_WORD_SIZE)

int		void
__elfN(freebsd_fixup)(register_t *stack_base, struct image_params imgp)		__elfN(freebsd_copyout_auxargs)(struct image_params imgp, u_long base)
{		{
Elf_Auxargs args = (Elf_Auxargs )imgp->auxargs;		Elf_Auxargs args = (Elf_Auxargs )imgp->auxargs;
Elf_Auxinfo argarray, pos;		Elf_Auxinfo argarray, pos;
Elf_Addr base, auxbase;		u_long auxlen;
int error;

base = (Elf_Addr )stack_base;
auxbase = base + imgp->args->argc + 1 + imgp->args->envc + 1;
argarray = pos = malloc(AT_COUNT * sizeof(*pos), M_TEMP,		argarray = pos = malloc(AT_COUNT * sizeof(*pos), M_TEMP,
M_WAITOK \| M_ZERO);		M_WAITOK \| M_ZERO);

if (args->execfd != -1)		if (args->execfd != -1)
AUXARGS_ENTRY(pos, AT_EXECFD, args->execfd);		AUXARGS_ENTRY(pos, AT_EXECFD, args->execfd);
AUXARGS_ENTRY(pos, AT_PHDR, args->phdr);		AUXARGS_ENTRY(pos, AT_PHDR, args->phdr);
AUXARGS_ENTRY(pos, AT_PHENT, args->phent);		AUXARGS_ENTRY(pos, AT_PHENT, args->phent);
AUXARGS_ENTRY(pos, AT_PHNUM, args->phnum);		AUXARGS_ENTRY(pos, AT_PHNUM, args->phnum);
Show All 27 Lines	__elfN(freebsd_copyout_auxargs)(struct image_params imgp, u_long base)
if (imgp->sysent->sv_hwcap2 != NULL)		if (imgp->sysent->sv_hwcap2 != NULL)
AUXARGS_ENTRY(pos, AT_HWCAP2, *imgp->sysent->sv_hwcap2);		AUXARGS_ENTRY(pos, AT_HWCAP2, *imgp->sysent->sv_hwcap2);
AUXARGS_ENTRY(pos, AT_NULL, 0);		AUXARGS_ENTRY(pos, AT_NULL, 0);

free(imgp->auxargs, M_TEMP);		free(imgp->auxargs, M_TEMP);
imgp->auxargs = NULL;		imgp->auxargs = NULL;
KASSERT(pos - argarray <= AT_COUNT, ("Too many auxargs"));		KASSERT(pos - argarray <= AT_COUNT, ("Too many auxargs"));

error = copyout(argarray, auxbase, sizeof(argarray) AT_COUNT);		auxlen = sizeof(argarray) (pos - argarray);
		*base -= auxlen;
		copyout(argarray, (void )base, auxlen);
free(argarray, M_TEMP);		free(argarray, M_TEMP);
if (error != 0)		}
return (error);

		int
		__elfN(freebsd_fixup)(register_t *stack_base, struct image_params imgp)
		{
		Elf_Addr *base;

		base = (Elf_Addr )stack_base;
base--;		base--;
if (suword(base, imgp->args->argc) == -1)		if (suword(base, imgp->args->argc) == -1)
return (EFAULT);		return (EFAULT);
stack_base = (register_t )base;		stack_base = (register_t )base;
return (0);		return (0);
}		}

/*		/*
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