libfsdriver: default to noop for putnode
While putnode requests should always succeed, very simple file system services may not care about reference counts and thus about putnode requests at all. For this reason, we now default to an OK response if no fdr_putnode implementation is given. Change-Id: I01f6421abf4546a1f69d8c21900a92d6acc45745
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22840dea11
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2 changed files with 9 additions and 7 deletions
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@ -99,15 +99,15 @@ fsdriver_putnode(const struct fsdriver * __restrict fdp,
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ino_nr = m_in->m_vfs_fs_putnode.inode;
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ino_nr = m_in->m_vfs_fs_putnode.inode;
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count = m_in->m_vfs_fs_putnode.count;
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count = m_in->m_vfs_fs_putnode.count;
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if (fdp->fdr_putnode == NULL)
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return ENOSYS;
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if (count == 0 || count > INT_MAX) {
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if (count == 0 || count > INT_MAX) {
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printf("fsdriver: invalid reference count\n");
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printf("fsdriver: invalid reference count\n");
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return EINVAL;
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return EINVAL;
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}
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}
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return fdp->fdr_putnode(ino_nr, count);
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if (fdp->fdr_putnode != NULL)
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return fdp->fdr_putnode(ino_nr, count);
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else
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return OK;
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}
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}
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/*
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/*
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@ -259,7 +259,8 @@ fsdriver_lookup(const struct fsdriver * __restrict fdp,
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else
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else
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r = ELOOP;
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r = ELOOP;
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fdp->fdr_putnode(next_node.fn_ino_nr, 1);
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if (fdp->fdr_putnode != NULL)
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fdp->fdr_putnode(next_node.fn_ino_nr, 1);
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if (r != OK)
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if (r != OK)
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break;
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break;
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@ -276,7 +277,8 @@ fsdriver_lookup(const struct fsdriver * __restrict fdp,
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}
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}
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/* We have found a new node. Continue from this node. */
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/* We have found a new node. Continue from this node. */
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fdp->fdr_putnode(cur_node.fn_ino_nr, 1);
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if (fdp->fdr_putnode != NULL)
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fdp->fdr_putnode(cur_node.fn_ino_nr, 1);
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cur_node = next_node;
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cur_node = next_node;
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@ -324,7 +326,7 @@ fsdriver_lookup(const struct fsdriver * __restrict fdp,
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m_out->m_fs_vfs_lookup.uid = cur_node.fn_uid;
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m_out->m_fs_vfs_lookup.uid = cur_node.fn_uid;
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m_out->m_fs_vfs_lookup.gid = cur_node.fn_gid;
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m_out->m_fs_vfs_lookup.gid = cur_node.fn_gid;
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m_out->m_fs_vfs_lookup.device = cur_node.fn_dev;
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m_out->m_fs_vfs_lookup.device = cur_node.fn_dev;
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} else
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} else if (fdp->fdr_putnode != NULL)
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fdp->fdr_putnode(cur_node.fn_ino_nr, 1);
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fdp->fdr_putnode(cur_node.fn_ino_nr, 1);
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return r;
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return r;
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