ba736c7968
- move MINIX3-specific files into minix/lib/libpuffs; - resynchronize the remaining files with NetBSD code; - remove a few unnecessary changes; - put remaining MINIX3-specific changes in __minix blocks; - sort out the source files being linked at all. The result is that libpuffs now successfully links against FUSE file system programs again. It can successfully mount, perform some of the most basic operations, and unmount the file system. Change-Id: Ieac220f7ad8c4d1fa293abda81967e8045be0bb4
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
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* Created (MFS based):
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* June 2011 (Evgeniy Ivanov)
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*/
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#include "fs.h"
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void release_node(struct puffs_usermount *pu, struct puffs_node *pn)
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{
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assert(pn->pn_count == 0);
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/* Required if puffs_node_reclaim() decides to leave node in the list */
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pn->pn_mountpoint = FALSE;
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if (pu->pu_ops.puffs_node_reclaim) {
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if (global_pu->pu_ops.puffs_node_reclaim(global_pu, pn) != 0)
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lpuffs_debug("Warning: reclaim failed\n");
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} else {
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puffs_pn_put(pn);
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}
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}
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/*===========================================================================*
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* fs_putnode *
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*===========================================================================*/
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int fs_putnode(ino_t ino_nr, unsigned int count)
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{
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/* Find the pnode specified by the request message and decrease its counter.
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* Release unused pnode.
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*/
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struct puffs_node *pn;
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if ((pn = puffs_pn_nodewalk(global_pu, find_inode_cb, &ino_nr)) == NULL) {
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/* XXX Probably removed from the list, see puffs_pn_remove() */
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struct puffs_node *pn_cur, *pn_next;
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pn_cur = LIST_FIRST(&global_pu->pu_pnode_removed_lst);
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while (pn_cur) {
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pn_next = LIST_NEXT(pn_cur, pn_entries);
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if (pn_cur->pn_va.va_fileid == ino_nr) {
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pn = pn_cur;
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break;
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}
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pn_cur = pn_next;
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}
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}
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if (pn == NULL) {
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lpuffs_debug("%s:%d putnode: pnode #%"PRIu64" not found\n",
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__FILE__, __LINE__, ino_nr);
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panic("fs_putnode failed");
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}
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if (count <= 0) {
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lpuffs_debug("%s:%d putnode: bad value for count: %d\n", __FILE__,
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__LINE__, count);
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panic("fs_putnode failed");
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} else if (pn->pn_count == 0) {
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/* FUSE fs might store in the list pnodes, which we hasn't
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* open, this means we got put request for file,
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* which wasn't opened by VFS.
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*/
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lpuffs_debug("%s:%d putnode: pn_count already zero\n", __FILE__,
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__LINE__);
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panic("fs_putnode failed");
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} else if (count > pn->pn_count) {
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struct puffs_node *pn_cur, *pn_next;
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struct puffs_usermount *pu = global_pu;
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ino_t ino = pn->pn_va.va_fileid;
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pn_cur = LIST_FIRST(&pu->pu_pnodelst);
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lpuffs_debug("inum count path polen hash\n");
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while (pn_cur) {
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pn_next = LIST_NEXT(pn_cur, pn_entries);
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if (pn_cur->pn_va.va_fileid == ino) {
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lpuffs_debug("%"PRIu64": %d %s %u %u\n",
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ino,
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pn_cur->pn_count,
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(char *)pn_cur->pn_po.po_path,
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pn_cur->pn_po.po_len,
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pn_cur->pn_po.po_hash);
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}
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pn_cur = pn_next;
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}
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lpuffs_debug("%s:%d putnode: count too high: %d > %d\n", __FILE__,
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__LINE__, count, pn->pn_count);
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panic("fs_putnode failed");
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}
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pn->pn_count -= count;
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if (pn->pn_count == 0)
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release_node(global_pu, pn);
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return(OK);
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}
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