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sys_getrlimit: modified to return mcexec's RLIMIT_STACK

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NAKAMURA Gou
2013-10-11 20:27:17 +09:00
parent bc173baf13
commit 4fb6620f3a
7 changed files with 23 additions and 3 deletions
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2
kernel/host.c
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@ -81,6 +81,8 @@ static int process_msg_prepare_process(unsigned long rphys)
proc->pid = pn->pid;
proc->vm->region.user_start = pn->user_start;
proc->vm->region.user_end = pn->user_end;
proc->rlimit_stack.rlim_cur = pn->rlimit_stack_cur;
proc->rlimit_stack.rlim_max = pn->rlimit_stack_max;
/* TODO: Clear it at the proper timing */
cpu_local_var(scp).post_idx = 0;

2
kernel/include/process.h
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@ -36,6 +36,7 @@
#include <waitq.h>
#include <futex.h>
#include <rlimit.h>
struct vm_range {
struct list_head list;
@ -90,6 +91,7 @@ struct process {
char sigstack[512];
// TODO: backup FR and MMX regs
unsigned long sigrc; // return code of rt_sigreturn (x86_64: rax reg.)
struct rlimit rlimit_stack;
};
struct process_vm {

2
kernel/include/syscall.h
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@ -107,6 +107,8 @@ struct program_load_desc {
unsigned long args_len;
char *envs;
unsigned long envs_len;
unsigned long rlimit_stack_cur;
unsigned long rlimit_stack_max;
struct program_image_section sections[0];
};

1
kernel/process.c
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@ -106,6 +106,7 @@ struct process *clone_process(struct process *org, unsigned long pc,
ihk_atomic_inc(&org->vm->refcount);
proc->vm = org->vm;
proc->rlimit_stack = org->rlimit_stack;
proc->sighandler = org->sighandler;
ihk_atomic_inc(&org->sighandler->use);

6
kernel/syscall.c
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@ -1106,14 +1106,14 @@ SYSCALL_DECLARE(getrlimit)
int ret;
int resource = ihk_mc_syscall_arg0(ctx);
struct rlimit *rlm = (struct rlimit *)ihk_mc_syscall_arg1(ctx);
struct process *proc = cpu_local_var(current);
switch (resource) {
case RLIMIT_STACK:
dkprintf("[%d] getrlimit() RLIMIT_STACK\n", ihk_mc_get_processor_id());
rlm->rlim_cur = (512*4096); /* Linux provides 8MB */
rlm->rlim_max = (1024*1024*1024);
rlm->rlim_cur = proc->rlimit_stack.rlim_cur;
rlm->rlim_max = proc->rlimit_stack.rlim_max;
ret = 0;
break;