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
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@ -75,6 +75,7 @@ struct sysentvec elf64_freebsd_sysvec_la48 = {
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.sv_maxuser = VM_MAXUSER_ADDRESS_LA48,
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.sv_usrstack = USRSTACK_LA48,
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.sv_psstrings = PS_STRINGS_LA48,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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@ -117,6 +118,7 @@ struct sysentvec elf64_freebsd_sysvec_la57 = {
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.sv_maxuser = VM_MAXUSER_ADDRESS_LA57,
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.sv_usrstack = USRSTACK_LA57,
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.sv_psstrings = PS_STRINGS_LA57,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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@ -776,6 +776,7 @@ struct sysentvec elf_linux_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS_LA48,
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.sv_usrstack = LINUX_USRSTACK_LA48,
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.sv_psstrings = LINUX_PS_STRINGS_LA48,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = linux_copyout_auxargs,
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.sv_copyout_strings = linux_copyout_strings,
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@ -937,6 +937,7 @@ struct sysentvec elf_linux_sysvec = {
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.sv_maxuser = LINUX32_MAXUSER,
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.sv_usrstack = LINUX32_USRSTACK,
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.sv_psstrings = LINUX32_PS_STRINGS,
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.sv_psstringssz = sizeof(struct linux32_ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = linux_copyout_auxargs,
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.sv_copyout_strings = linux_copyout_strings,
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@ -81,6 +81,7 @@ struct sysentvec elf32_freebsd_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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@ -99,6 +99,7 @@ static struct sysentvec elf32_freebsd_sysvec = {
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.sv_maxuser = FREEBSD32_MAXUSER,
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.sv_usrstack = FREEBSD32_USRSTACK,
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.sv_psstrings = FREEBSD32_PS_STRINGS,
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.sv_psstringssz = sizeof(struct freebsd32_ps_strings),
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.sv_stackprot = VM_PROT_READ | VM_PROT_WRITE,
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.sv_copyout_auxargs = elf32_freebsd_copyout_auxargs,
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.sv_copyout_strings = freebsd32_copyout_strings,
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@ -77,6 +77,7 @@ static struct sysentvec elf64_freebsd_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_READ | VM_PROT_WRITE,
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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@ -519,6 +519,7 @@ struct sysentvec elf_linux_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = LINUX_USRSTACK,
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.sv_psstrings = LINUX_PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_READ | VM_PROT_WRITE,
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.sv_copyout_auxargs = linux_copyout_auxargs,
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.sv_copyout_strings = linux_copyout_strings,
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@ -121,6 +121,7 @@ struct sysentvec ia32_freebsd_sysvec = {
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.sv_maxuser = FREEBSD32_MAXUSER,
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.sv_usrstack = FREEBSD32_USRSTACK,
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.sv_psstrings = FREEBSD32_PS_STRINGS,
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.sv_psstringssz = sizeof(struct freebsd32_ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = elf32_freebsd_copyout_auxargs,
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.sv_copyout_strings = freebsd32_copyout_strings,
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@ -70,6 +70,7 @@ struct sysentvec elf32_freebsd_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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@ -845,6 +845,7 @@ struct sysentvec linux_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = LINUX_USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_strings = exec_copyout_strings,
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.sv_setregs = linux_exec_setregs,
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@ -885,6 +886,7 @@ struct sysentvec elf_linux_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = LINUX_USRSTACK,
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.sv_psstrings = LINUX_PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = linux_copyout_auxargs,
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.sv_copyout_strings = linux_copyout_strings,
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@ -89,6 +89,7 @@ struct sysentvec aout_sysvec = {
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.sv_maxuser = AOUT32_USRSTACK,
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.sv_usrstack = AOUT32_USRSTACK,
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.sv_psstrings = AOUT32_PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_strings = exec_copyout_strings,
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.sv_setregs = exec_setregs,
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@ -139,6 +140,7 @@ struct sysentvec aout_sysvec = {
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.sv_maxuser = AOUT32_USRSTACK,
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.sv_usrstack = AOUT32_USRSTACK,
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.sv_psstrings = AOUT32_PS_STRINGS,
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.sv_psstringssz = sizeof(struct freebsd32_ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_strings = freebsd32_copyout_strings,
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.sv_setregs = ia32_setregs,
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@ -424,6 +424,7 @@ struct sysentvec null_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_strings = NULL,
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.sv_setregs = NULL,
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@ -109,6 +109,7 @@ struct sysentvec elf32_freebsd_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS32,
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.sv_usrstack = FREEBSD32_USRSTACK,
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.sv_psstrings = FREEBSD32_PS_STRINGS,
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.sv_psstringssz = sizeof(struct freebsd32_ps_strings),
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.sv_copyout_strings = freebsd32_copyout_strings,
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.sv_setregs = ppc32_setregs,
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.sv_syscallnames = freebsd32_syscallnames,
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@ -117,6 +118,7 @@ struct sysentvec elf32_freebsd_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_copyout_strings = exec_copyout_strings,
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.sv_setregs = exec_setregs,
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.sv_syscallnames = syscallnames,
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@ -78,6 +78,7 @@ struct sysentvec elf64_freebsd_sysvec_v1 = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = __elfN(powerpc_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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@ -119,6 +120,7 @@ struct sysentvec elf64_freebsd_sysvec_v2 = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = __elfN(powerpc_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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@ -81,6 +81,7 @@ struct sysentvec elf64_freebsd_sysvec = {
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.sv_maxuser = VM_MAXUSER_ADDRESS,
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_psstringssz = sizeof(struct ps_strings),
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.sv_stackprot = VM_PROT_READ | VM_PROT_WRITE,
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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@ -128,6 +128,7 @@ struct sysentvec {
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vm_offset_t sv_maxuser; /* VM_MAXUSER_ADDRESS */
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vm_offset_t sv_usrstack; /* USRSTACK */
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vm_offset_t sv_psstrings; /* PS_STRINGS */
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size_t sv_psstringssz; /* PS_STRINGS size */
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int sv_stackprot; /* vm protection for stack */
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int (*sv_copyout_strings)(struct image_params *,
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uintptr_t *);
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