bsd/vfs/vfs_lookup.c

50  * 4. Neither the name of the University nor the names of its contributors
133  * when they occur at the end of the name translation process.
137  * The segflg defines whether the name is to be copied from user
142  *	copy in name
146  *		if symbolic link, massage name in buffer and continue
228 	 * Get a buffer for the name to be translated, and copy the
229 	 * name into the buffer.
267 	 * Since the name cache may contain positive entries of
503 		 * missing from name cache, but should
506 		 * name cache entry got recycled but the
512 		 * rechecked behind the name cache lock, but if it
809 	 * A degenerate name (e.g. / or "") which is a way of
860  * whether the name is to be looked up, created, renamed, or deleted.
874  *	identify next component of name at ndp->ni_ptr
875  *	handle degenerate case where name is null string
877  *	call VNOP_LOOKUP routine for next component name
882  *	if more components of name, do next level at dirloop
979 		 * make sure we don't try to enter the name back into
1043 	 * We now have a segment name to search for, and a directory to search.
1080 	 * name change or change parents.  Without this, the lookup may make update
1222 	const char *name, *np;
1252 		name = vnode_getname(vp);
1253 		if (name == NULL) {
1254 			printf("lookup_traverse_union: null parent name: .%s\n", pp);
1258 		len = strlen(name);
1259 		if ((len + 1) > (pp - path)) {		// Enough space for this name ?
1261 			vnode_putname(name);
1264 		for (np = name + len; len > 0; len--)	// Copy name backwards
1266 		vnode_putname(name);
1535  * relookup - lookup a path name component
1546 	int i, newhash;			/* DEBUG: check name hash */
1547 	char *cp;			/* DEBUG: check name ptr/len */
1566 	 * Check for degenerate name (e.g. / or "")
1590 	 * We now have a segment name to search for, and a directory to search.
1662  * by fs_usage.  The path up to and including the current component name are
1678  * current component name (usually because an intermediate component was not
1684  * TODO: If there is more path beyond the current component name, should we
1796  *	"foobar" represents a file name