Function report |
Source Code:kernel\fork.c |
Create Date:2022-07-28 08:58:49 |
Last Modify:2020-03-17 11:04:53 | Copyright©Brick |
home page | Tree |
Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:copy_clone_args_from_user
Proto:noinline static int copy_clone_args_from_user(struct kernel_clone_args *kargs, struct clone_args __user *uargs, size_t usize)
Type:int
Parameter:
Type | Parameter | Name |
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struct kernel_clone_args * | kargs | |
struct clone_args __user * | uargs | |
size_t | usize |
2599 | If Value for the false possibility is greater at compile time(usize > PAGE_SIZE) Then Return -E2BIG |
2601 | If Value for the false possibility is greater at compile time(usize < sizeof first published struct ) Then Return -EINVAL |
2604 | err = py_struct_from_user: copy a struct from userspace*@dst: Destination address, in kernel space |
2608 | If Value for the false possibility is greater at compile time(set_tid_size > MAX_PID_NS_LEVEL is needed for limiting size of 'struct pid' ) Then Return -EINVAL |
2611 | If Value for the false possibility is greater at compile time(!set_tid && set_tid_size > 0) Then Return -EINVAL |
2614 | If Value for the false possibility is greater at compile time(set_tid && set_tid_size == 0) Then Return -EINVAL |
2625 | * kargs = (struct kernel_clone_args){flags = flags, pidfd = u64_to_user_ptr(pidfd), child_tid = u64_to_user_ptr(child_tid), parent_tid = u64_to_user_ptr(parent_tid), exit_signal = exit_signal, stack = stack, stack_size = stack_size, tls = tls, Number of elements in *set_tid = set_tid_size, } |
2637 | If set_tid && copy_from_user(kset_tid, u64_to_user_ptr(set_tid), ( Number of elements in *set_tid * sizeof(pid_t))) Then Return -EFAULT |
2644 | Return 0 |
Name | Describe |
---|---|
SYSCALL_DEFINE2 | lone3 - create a new process with specific properties*@uargs: argument structure*@size: size of @uargs* clone3() is the extensible successor to clone()/clone2().* It takes a struct as argument that is versioned by its size. |
Source code conversion tool public plug-in interface | X |
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