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#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <asm/setup.h>
static char new_command_line[COMMAND_LINE_SIZE];
static int cmdline_proc_show(struct seq_file *m, void *v)
{
seq_printf(m, "%s\n", new_command_line);
return 0;
}
static int cmdline_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, cmdline_proc_show, NULL);
}
static const struct file_operations cmdline_proc_fops = {
.open = cmdline_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int __init proc_cmdline_init(void)
{
char *offset_addr, *cmd = new_command_line;
strcpy(cmd, saved_command_line);
/*
* Remove 'androidboot.verifiedbootstate' flag from command line seen
* by userspace in order to pass SafetyNet CTS check.
*/
offset_addr = strstr(cmd, "androidboot.verifiedbootstate=");
if (offset_addr) {
size_t i, len, offset;
len = strlen(cmd);
offset = offset_addr - cmd;
for (i = 1; i < (len - offset); i++) {
if (cmd[offset + i] == ' ')
break;
}
memmove(offset_addr, &cmd[offset + i + 1], len - i - offset);
}
proc_create("cmdline", 0, NULL, &cmdline_proc_fops);
return 0;
}
module_init(proc_cmdline_init);
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