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/* Test the limit for (1) number of arguments and (2) total size of arguments */
#include <syscall.h>
#include <string.h>
#include "tests/lib.h"
#define MAX_SIZE 4096
static bool recurse (int, int);
char cmd[MAX_SIZE * 4];
static bool
recurse (int argsize, int argcount)
{
int i, j;
char *p;
strlcpy (cmd, "args-limit", 11);
p = cmd+strlen(cmd);
for (i = 0; i < argcount; i++) {
*p++ = ' ';
for (j = 0; j < argsize; j++) {
*p++ = 'X';
}
}
*p = 0;
if (wait (exec (cmd)) < 0) {
return false;
} else {
return true;
}
}
int
main (int argc, char **argv)
{
test_name = argv[0];
if(argc <= 1) {
int step;
int max_args = 0, max_size = 0;
msg ("begin");
/* Binary search number of arguments */
for (step = MAX_SIZE; step > 0 && max_args < MAX_SIZE; step>>=1) {
int t = max_args + step;
if (recurse (1, t)) {
max_args = t;
}
}
if (max_args > 63) {
msg ("success. at least 64 command line arguments are supported.");
} else {
msg ("FAIL: Only %d command line arguments are supported",max_args);
}
/* Binary search size of arguments */
for (step = MAX_SIZE; step > 0 && max_size < MAX_SIZE; step>>=1) {
int t = max_size + step;
if (recurse (t, 1)) {
max_size = t;
}
}
if (max_size >= 100) {
msg ("success. arguments with at least 100 bytes are supported.");
} else {
msg ("FAIL: Arguments with more than %d bytes are not supported.",max_size);
}
msg ("end");
}
return 0;
}
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