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cptofs: Add cli option to specify memory parameter #620

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cptofs: Add cli option to specify memory parameter #620

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9 changes: 8 additions & 1 deletion tools/lkl/cptofs.c
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,8 @@ static struct argp_option options[] = {
{"owner", 'o', "int", 0, "owner of the destination files"},
{"group", 'g', "int", 0, "group of the destination files"},
{"selinux", 's', "string", 0, "selinux attributes for destination"},
{"mb", 'm', "int", 0,
"amount of memory to allocate in MB (default: 100)"},
{0},
};

Expand All @@ -44,6 +46,7 @@ static struct cl_args {
const char *selinux;
uid_t owner;
gid_t group;
int mb;
} cla;

static int cptofs;
Expand Down Expand Up @@ -74,6 +77,9 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state)
case 'g':
cla->group = atoi(arg);
break;
case 'm':
cla->mb = atoi(arg);
break;
case ARGP_KEY_ARG:
// Capture all remaining arguments in our paths array and stop
// parsing here. We treat the last one as the destination and
Expand Down Expand Up @@ -627,6 +633,7 @@ int main(int argc, char **argv)

cla.owner = (uid_t)-1;
cla.group = (gid_t)-1;
cla.mb = 100;

if (strstr(argv[0], "cptofs")) {
cptofs = 1;
Expand Down Expand Up @@ -664,7 +671,7 @@ int main(int argc, char **argv)
}
disk_id = ret;

ret = lkl_start_kernel("mem=100M");
ret = lkl_start_kernel("mem=%dM", cla.mb);
if (ret < 0) {
fprintf(stderr, "failed to start kernel: %s\n",
lkl_strerror(ret));
Expand Down