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mcexec: atobytes() to convert size string to # of bytes

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This commit is contained in:
Balazs Gerofi
2017-05-24 01:39:42 +09:00
parent 74c5f61fd5
commit 9f55263528
1 changed files with 29 additions and 2 deletions
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31
executer/user/mcexec.c
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@ -1276,6 +1276,33 @@ static int rlimits[] = {
char dev[64];
unsigned long atobytes(char *string)
{
unsigned long mult = 1;
char *postfix;
if (!strlen(string)) {
return 0;
}
postfix = &string[strlen(string) - 1];
if (*postfix == 'k' || *postfix == 'K') {
mult = 1024;
*postfix = 0;
}
else if (*postfix == 'm' || *postfix == 'M') {
mult = 1024 * 1024;
*postfix = 0;
}
else if (*postfix == 'g' || *postfix == 'G') {
mult = 1024 * 1024 * 1024;
*postfix = 0;
}
return atol(string) * mult;
}
static struct option mcexec_options[] = {
{
.name = "disable-vdso",
@ -1410,11 +1437,11 @@ int main(int argc, char **argv)
break;
case 'm':
mpol_threshold = atol(optarg);
mpol_threshold = atobytes(optarg);
break;
case 'h':
heap_extension = atol(optarg);
heap_extension = atobytes(optarg);
break;
case 0: /* long opt */