static int
u_dpm_set_task_state(pid_t pid, dpm_state_t task_state)
{
return dpm_set_task_state(pid, task_state);
}
static int
write_proc_dpm_cmd (struct file *file, const char *buffer,
unsigned long count, void *data)
{
char *buf, *tok, **tokptrs;
char *whitespace = " \t\r\n";
int ret = 0, ntoks;
if (current->uid != 0)
return -EACCES;
if (count == 0)
return 0;
if (!(buf = kmalloc(count + 1, GFP_KERNEL)))
return -ENOMEM;
if (copy_from_user(buf, buffer, count)) {
ret = -EFAULT;
goto out0;
}
buf[count] = '\0';
if (!(tokptrs = (char **)__get_free_page(GFP_KERNEL))) {
ret = -ENOMEM;
goto out1;
}
ret = -EINVAL;
ntoks = 0;
do {
buf = buf + strspn(buf, whitespace);
tok = strsep(&buf, whitespace);
if (*tok == '\0') {
if (ntoks == 0) {
ret = 0;
goto out1;
} else
break;
}
if (ntoks == (PAGE_SIZE / sizeof(char **)))
goto out1;
tokptrs[ntoks++] = tok;
} while(buf);
if (ntoks == 1) {
if (strcmp(tokptrs[0], "init") == 0) {
ret = dpm_init();
} else if (strcmp(tokptrs[0], "enable") == 0) {
ret = dpm_enable();
} else if (strcmp(tokptrs[0], "disable") == 0) {
ret = dpm_disable();
} else if (strcmp(tokptrs[0], "terminate") == 0) {
ret = dpm_terminate();
}
} else if (ntoks == 2) {
if (strcmp(tokptrs[0], "set_policy") == 0)
ret = dpm_set_policy(tokptrs[1]);
else if (strcmp(tokptrs[0], "set_state") == 0)
ret = dpm_set_op_state(tokptrs[1]);
} else {
if (strcmp(tokptrs[0], "set_task_state") == 0) {
if (ntoks != 3)
pwarn("set_task_state", ntoks, "", 3);
else
ret = dpm_set_task_state(simple_strtol(tokptrs[1],
NULL, 0),
simple_strtol(tokptrs[2],
NULL, 0));
} else if (strcmp(tokptrs[0], "create_opt") == 0) {
if (ntoks != DPM_PP_NBR + 2)
pwarn("create_opt", ntoks,
"", DPM_PP_NBR + 2);
else {
dpm_md_pp_t pp[DPM_PP_NBR];
int i;
for (i = 0; i < DPM_PP_NBR; i++)
pp[i] = simple_strtol(tokptrs[i + 2],
NULL, 0);
ret = dpm_create_opt(tokptrs[1], pp);
}
} else if (strcmp(tokptrs[0], "create_class") == 0) {
if (ntoks < 3)
pwarn("create_class", ntoks, ">= ", 3);
else
ret = dpm_create_class(tokptrs[1], &tokptrs[2],
ntoks - 2);
} else if (strcmp(tokptrs[0], "create_policy") == 0) {
if (ntoks != (DPM_STATES + 2))
pwarn("create_policy", ntoks, "",
DPM_STATES + 2);
else
ret = dpm_create_policy(tokptrs[1],
&tokptrs[2]);
}
}
out1:
free_page((unsigned long)tokptrs);
out0:
kfree(buf);
if (ret == 0)
return count;
else
return ret;
}