sysent: Add a sv_psstringssz field to struct sysentvec

The size of the ps_strings structure varies between ABIs, so this is
useful for computing the address of the ps_strings structure relative to
the top of the stack when stack address randomization is enabled.

Reviewed by:	kib
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D33704

This commit is contained in:

Mark Johnston

2022-01-17 11:42:07 -05:00

parent 1544f5add8

commit 3fc21fdd5f

16 changed files with 21 additions and 0 deletions

									
										sys/arm/arm/elf_machdep.c
									
		+1
		
												View File
												
				@@ -81,6 +81,7 @@ struct sysentvec elf32_freebsd_sysvec = {

					.sv_maxuser	= VM_MAXUSER_ADDRESS,

					.sv_usrstack	= USRSTACK,

					.sv_psstrings	= PS_STRINGS,

					.sv_psstringssz	= sizeof(struct ps_strings),

					.sv_stackprot	= VM_PROT_ALL,

					.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),

					.sv_copyout_strings = exec_copyout_strings,