Function devtmpfs_symlink

components/dfs/dfs_v2/filesystems/devfs/devtmpfs.c:347–384

}

static int devtmpfs_symlink(struct dfs_dentry *parent_dentry, const char *target, const char *linkpath)
{
    int ret = RT_EOK;
    struct devtmpfs_file *p_file, *l_file;
    struct devtmpfs_sb *superblock;

    RT_ASSERT(parent_dentry);
    RT_ASSERT(parent_dentry->mnt);

    superblock = (struct devtmpfs_sb *)parent_dentry->mnt->data;
    RT_ASSERT(superblock);

    p_file = devtmpfs_file_lookup(superblock, parent_dentry->pathname);
    if (p_file)
    {
        l_file = (struct devtmpfs_file *)rt_calloc(1, sizeof(struct devtmpfs_file));
        if (l_file)
        {
            superblock->df_size += sizeof(struct devtmpfs_file);

            strncpy(l_file->name, linkpath, DIRENT_NAME_MAX - 1);

            dfs_vfs_init_node(&l_file->node);
            l_file->sb = superblock;
            l_file->type = TMPFS_TYPE_FILE;
            l_file->mode = p_file->mode;
            l_file->mode &= ~S_IFMT;
            l_file->mode |= S_IFLNK;
            l_file->link = rt_strdup(target);

            rt_spin_lock(&superblock->lock);
            dfs_vfs_append_node(&p_file->node, &l_file->node);
            rt_spin_unlock(&superblock->lock);
        }
    }

    return ret;
}

static int devtmpfs_readlink(struct dfs_dentry *dentry, char *buf, int len)
{