diff options
Diffstat (limited to 'sys/compat/ia32')
| -rw-r--r-- | sys/compat/ia32/ia32_sysvec.c | 65 | ||||
| -rw-r--r-- | sys/compat/ia32/ia32_util.h | 4 |
2 files changed, 68 insertions, 1 deletions
diff --git a/sys/compat/ia32/ia32_sysvec.c b/sys/compat/ia32/ia32_sysvec.c index 5efb4d8..bbaa56a 100644 --- a/sys/compat/ia32/ia32_sysvec.c +++ b/sys/compat/ia32/ia32_sysvec.c @@ -78,9 +78,12 @@ __FBSDID("$FreeBSD$"); static register_t *ia32_copyout_strings(struct image_params *imgp); static void ia32_setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings); +static void ia32_fixlimits(struct image_params *imgp); extern struct sysent freebsd32_sysent[]; +SYSCTL_NODE(_compat, OID_AUTO, ia32, CTLFLAG_RW, 0, "ia32 mode"); + struct sysentvec ia32_freebsd_sysvec = { SYS_MAXSYSCALL, freebsd32_sysent, @@ -106,7 +109,8 @@ struct sysentvec ia32_freebsd_sysvec = { FREEBSD32_PS_STRINGS, VM_PROT_ALL, ia32_copyout_strings, - ia32_setregs + ia32_setregs, + ia32_fixlimits }; @@ -283,3 +287,62 @@ ia32_setregs(td, entry, stack, ps_strings) pcb->pcb_flags |= PCB_FULLCTX; td->td_retval[1] = 0; } + +static u_long ia32_maxdsiz = IA32_MAXDSIZ; +SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxdsiz, CTLFLAG_RW, &ia32_maxdsiz, 0, ""); +static u_long ia32_maxssiz = IA32_MAXSSIZ; +SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxssiz, CTLFLAG_RW, &ia32_maxssiz, 0, ""); +static u_long ia32_maxvmem = IA32_MAXVMEM; +SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxvmem, CTLFLAG_RW, &ia32_maxvmem, 0, ""); + +static void +ia32_fixlimits(struct image_params *imgp) +{ + struct proc *p = imgp->proc; + + if (ia32_maxdsiz != 0) { + if (p->p_rlimit[RLIMIT_DATA].rlim_cur > ia32_maxdsiz || + p->p_rlimit[RLIMIT_DATA].rlim_max > ia32_maxdsiz) { + if (p->p_limit->p_refcnt > 1) { + p->p_limit->p_refcnt--; + p->p_limit = limcopy(p->p_limit); + } + if (p->p_rlimit[RLIMIT_DATA].rlim_cur > ia32_maxdsiz) + p->p_rlimit[RLIMIT_DATA].rlim_cur = + ia32_maxdsiz; + if (p->p_rlimit[RLIMIT_DATA].rlim_max > ia32_maxdsiz) + p->p_rlimit[RLIMIT_DATA].rlim_max = + ia32_maxdsiz; + } + } + if (ia32_maxssiz != 0) { + if (p->p_rlimit[RLIMIT_STACK].rlim_cur > ia32_maxssiz || + p->p_rlimit[RLIMIT_STACK].rlim_max > ia32_maxssiz) { + if (p->p_limit->p_refcnt > 1) { + p->p_limit->p_refcnt--; + p->p_limit = limcopy(p->p_limit); + } + if (p->p_rlimit[RLIMIT_STACK].rlim_cur > ia32_maxssiz) + p->p_rlimit[RLIMIT_STACK].rlim_cur = + ia32_maxssiz; + if (p->p_rlimit[RLIMIT_STACK].rlim_max > ia32_maxssiz) + p->p_rlimit[RLIMIT_STACK].rlim_max = + ia32_maxssiz; + } + } + if (ia32_maxvmem != 0) { + if (p->p_rlimit[RLIMIT_VMEM].rlim_cur > ia32_maxvmem || + p->p_rlimit[RLIMIT_VMEM].rlim_max > ia32_maxvmem) { + if (p->p_limit->p_refcnt > 1) { + p->p_limit->p_refcnt--; + p->p_limit = limcopy(p->p_limit); + } + if (p->p_rlimit[RLIMIT_VMEM].rlim_cur > ia32_maxvmem) + p->p_rlimit[RLIMIT_VMEM].rlim_cur = + ia32_maxvmem; + if (p->p_rlimit[RLIMIT_VMEM].rlim_max > ia32_maxvmem) + p->p_rlimit[RLIMIT_VMEM].rlim_max = + ia32_maxvmem; + } + } +} diff --git a/sys/compat/ia32/ia32_util.h b/sys/compat/ia32/ia32_util.h index 06f78cf..f6de375 100644 --- a/sys/compat/ia32/ia32_util.h +++ b/sys/compat/ia32/ia32_util.h @@ -38,3 +38,7 @@ #include <sys/cdefs.h> #define FREEBSD32_USRSTACK ((1ul << 32) - PAGE_SIZE) + +#define IA32_MAXDSIZ (512*1024*1024) /* 512MB */ +#define IA32_MAXSSIZ (64*1024*1024) /* 64MB */ +#define IA32_MAXVMEM 0 /* Unlimited */ |
