#error "This code does not support your architecture"
#endif
-static char *aclpath __devinitdata = "procprotect";
+static char *aclpath = "procprotect";
static struct qstr aclqpath;
module_param(aclpath, charp, 0);
/* The kernel is going to honor the request. Here's where we step in */
struct inode *inode = *(ctx->inode);
if (!run_acl(inode->i_ino)) {
- if (current->nsproxy->mnt_ns!=init_task.nsproxy->mnt_ns) {
- regs->ax = -EPERM;
- }
+ regs->ax = -EPERM;
}
}
if (ret==0) {
/* The kernel is going to honor the request. Here's where we step in */
+ /*struct qstr *q = ctx->q;
+ if (!strncmp(q->name,"sysrq-trigger",13)) {
+ printk(KERN_CRIT "lookup_slow sysrqtrigger");
+ }*/
struct path *p = ctx->path;
struct inode *inode = p->dentry->d_inode;
if (!run_acl(inode->i_ino)) {
- if (current->nsproxy->mnt_ns!=init_task.nsproxy->mnt_ns) {
- regs->ax = -EPERM;
- }
+ regs->ax = -EPERM;
}
}
int intent;
};
-static struct file *do_last_probe(struct nameidata *nd, struct path *path,
+static struct file *do_last_probe(struct nameidata *nd, struct path *path, struct file *file,
struct open_flags *op, const char *pathname) {
struct dentry *parent = nd->path.dentry;
struct inode *pinode = parent->d_inode;
+ struct qstr *q = &nd->last;
+
if (pinode->i_sb->s_magic == PROC_SUPER_MAGIC && current->nsproxy->mnt_ns!=init_task.nsproxy->mnt_ns) {
+ /*if (!strncmp(q->name,"sysrq-trigger",13)) {
+ printk(KERN_CRIT "do_last sysrqtrigger: %d",op->open_flag);
+ }*/
op->open_flag &= ~O_CREAT;
}
jprobe_return();
aclqpath.name = aclpath;
aclqpath.len = strnlen(aclpath, PATH_MAX);
+ dolast_probe.kp.addr =
+ (kprobe_opcode_t *) kallsyms_lookup_name("do_last");
+
+ if (!dolast_probe.kp.addr) {
+ printk("Couldn't find %s to plant kretprobe\n", "do_last");
+ return -1;
+ }
+
+ if ((ret = register_jprobe(&dolast_probe)) <0) {
+ printk("register_jprobe failed, returned %u\n", ret);
+ return -1;
+ }
fast_probe.kp.addr =
(kprobe_opcode_t *) kallsyms_lookup_name("lookup_fast");
if (!fast_probe.kp.addr) {
return -1;
}
- dolast_probe.kp.addr =
- (kprobe_opcode_t *) kallsyms_lookup_name("do_last");
-
- if (!dolast_probe.kp.addr) {
- printk("Couldn't find %s to plant kretprobe\n", "do_last");
- return -1;
- }
-
- if ((ret = register_jprobe(&dolast_probe)) <0) {
- printk("register_jprobe failed, returned %u\n", ret);
- return -1;
- }
+
if ((ret = register_kretprobe(&fast_probe)) <0) {
printk("register_kretprobe failed, returned %d\n", ret);