static inline int copy_fs(unsigned long clone_flags, struct task_struct * tsk) { if (clone_flags & CLONE_FS) { atomic_inc(¤t->fs->count); return 0; } tsk->fs = __copy_fs_struct(current->fs); if (!tsk->fs) return -ENOMEM; return 0; }
/* * Unshare the filesystem structure if it is being shared */ static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp) { struct fs_struct *fs = current->fs; if ((unshare_flags & CLONE_FS) && (fs && atomic_read(&fs->count) > 1)) { *new_fsp = __copy_fs_struct(current->fs); if (!*new_fsp) return -ENOMEM; } return 0; }
struct fs_struct *copy_fs_struct(struct fs_struct *old) { return __copy_fs_struct(old); }