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subvolume_create

btrfs_uapi::subvolume

Function subvolume_create 

Source 
pub fn subvolume_create(
    parent_fd: BorrowedFd<'_>,
    name: &CStr,
    qgroups: &[u64],
) -> Result<()>
Expand description

Create a new subvolume named name inside the directory referred to by parent_fd.

name must be a plain leaf name (no slashes). The caller is responsible for opening the correct parent directory. If qgroups is non-empty, the new subvolume is added to those qgroups. Requires CAP_SYS_ADMIN.

Errors: ENAMETOOLONG if name does not fit in the 4040-byte kernel buffer. EEXIST if a subvolume or directory with that name already exists. EPERM without CAP_SYS_ADMIN.