gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

init_process_stack: Support "ulimit -s unlimited"

Browse Source 
Refs: #1109
Change-Id: I395f012fd747cb6a2f93be71e34c7f6f3666ed67
This commit is contained in:
Tomoki Shirasawa
2018-06-18 15:55:59 +09:00
committed by Masamichi Takagi
parent 0c7384f980
commit eae5c40f60
11 changed files with 202 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
kernel/process.c
View File

@@ -2138,6 +2138,7 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
char *stack;
int error;
unsigned long *p;
unsigned long maxsz;
unsigned long minsz;
unsigned long at_rand;
struct process *proc = thread->proc;
@@ -2154,19 +2155,20 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
minsz = (pn->stack_premap
+ LARGE_PAGE_SIZE - 1) & LARGE_PAGE_MASK;
#endif /* POSTK_DEBUG_ARCH_DEP_80 */
size = (proc->rlimit[MCK_RLIMIT_STACK].rlim_cur
+ LARGE_PAGE_SIZE - 1) & LARGE_PAGE_MASK;
maxsz = (end - thread->vm->region.map_start) / 2;
size = proc->rlimit[MCK_RLIMIT_STACK].rlim_cur;
if (size > maxsz) {
size = maxsz;
}
else if (size < minsz) {
size = minsz;
}
size = (size + LARGE_PAGE_SIZE - 1) & LARGE_PAGE_MASK;
dkprintf("%s: stack_premap: %lu, rlim_cur: %lu, minsz: %lu, size: %lu\n",
__FUNCTION__,
pn->stack_premap,
proc->rlimit[MCK_RLIMIT_STACK].rlim_cur,
minsz, size);
if (size > (USER_END / 2)) {
size = USER_END / 2;
}
else if (size < minsz) {
size = minsz;
}
start = (end - size) & LARGE_PAGE_MASK;
/* Apply user allocation policy to stacks */