X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmountd%2Fcache.c;h=fa154725b95b809dfe88c9a727fd98e4e1160e8b;hp=ce1a5a9f41bc9accd5d6433e77926d29b693d66a;hb=3a340251597a5b0c579c31d8caf9aa3b53a77016;hpb=7a042b78ba064a36d1c7de797d2af796212fca2e

diff --git a/utils/mountd/cache.c b/utils/mountd/cache.c
index ce1a5a9..fa15472 100644
--- a/utils/mountd/cache.c
+++ b/utils/mountd/cache.c
@@ -14,6 +14,7 @@
 #include <sys/types.h>
 #include <sys/select.h>
 #include <sys/stat.h>
+#include <sys/vfs.h>
 #include <time.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
@@ -81,6 +82,8 @@ void auth_unix_ip(FILE *f)
 	if (readline(fileno(f), &lbuf, &lbuflen) != 1)
 		return;
 
+	xlog(D_CALL, "auth_unix_ip: inbuf '%s'", lbuf);
+
 	cp = lbuf;
 
 	if (qword_get(&cp, class, 20) <= 0 ||
@@ -109,6 +112,7 @@ void auth_unix_ip(FILE *f)
 	else if (client)
 		qword_print(f, *client?client:"DEFAULT");
 	qword_eol(f);
+	xlog(D_CALL, "auth_unix_ip: client %p '%s'", client, client?client: "DEFAULT");
 
 	if (client) free(client);
 	free(he);
@@ -155,13 +159,50 @@ void auth_unix_gid(FILE *f)
 		qword_printint(f, ngroups);
 		for (i=0; i<ngroups; i++)
 			qword_printint(f, groups[i]);
-	}
+	} else
+		qword_printint(f, 0);
 	qword_eol(f);
+
 	if (groups != glist)
 		free(groups);
 }
 
 #if USE_BLKID
+static const char *get_uuid_blkdev(char *path)
+{
+	static blkid_cache cache = NULL;
+	struct stat stb;
+	char *devname;
+	blkid_tag_iterate iter;
+	blkid_dev dev;
+	const char *type;
+	const char *val = NULL;
+
+	if (cache == NULL)
+		blkid_get_cache(&cache, NULL);
+
+	if (stat(path, &stb) != 0)
+		return NULL;
+	devname = blkid_devno_to_devname(stb.st_dev);
+	if (!devname)
+		return NULL;
+	dev = blkid_get_dev(cache, devname, BLKID_DEV_NORMAL);
+	free(devname);
+	if (!dev)
+		return NULL;
+	iter = blkid_tag_iterate_begin(dev);
+	if (!iter)
+		return NULL;
+	while (blkid_tag_next(iter, &type, &val) == 0)
+		if (strcmp(type, "UUID") == 0)
+			break;
+	blkid_tag_iterate_end(iter);
+	return val;
+}
+#else
+#define get_uuid_blkdev(path) (NULL)
+#endif
+
 int get_uuid(char *path, char *uuid, int uuidlen, char *u)
 {
 	/* extract hex digits from uuidstr and compose a uuid
@@ -169,38 +210,22 @@ int get_uuid(char *path, char *uuid, int uuidlen, char *u)
 	 * a smaller uuid.  Then compare with uuid
 	 */
 	int i = 0;
-	const char *val;
+	const char *val = NULL;
+	char fsid_val[17];
 
 	if (path) {
-		static blkid_cache cache = NULL;
-		struct stat stb;
-		char *devname;
-		blkid_tag_iterate iter;
-		blkid_dev dev;
-		const char *type;
-		if (cache == NULL)
-			blkid_get_cache(&cache, NULL);
-
-		blkid_probe_all_new(cache);
-
-		if (stat(path, &stb) != 0)
-			return 0;
-		devname = blkid_devno_to_devname(stb.st_dev);
-		if (!devname)
-			return 0;
-		dev = blkid_get_dev(cache, devname, BLKID_DEV_NORMAL);
-		free(devname);
-		if (!dev)
-			return 0;
-		iter = blkid_tag_iterate_begin(dev);
-		if (!iter)
-			return 0;
-		while (blkid_tag_next(iter, &type, &val) == 0)
-			if (strcmp(type, "UUID") == 0)
-				break;
-		blkid_tag_iterate_end(iter);
-		if (!type)
-			return 0;
+		val = get_uuid_blkdev(path);
+		if (!val) {
+			struct statfs64 st;
+
+			if (statfs64(path, &st))
+				return 0;
+			if (!st.f_fsid.__val[0] && !st.f_fsid.__val[1])
+				return 0;
+			snprintf(fsid_val, 17, "%08x%08x",
+				 st.f_fsid.__val[0], st.f_fsid.__val[1]);
+			val = fsid_val;
+		}
 	} else {
 		val = uuid;
 	}
@@ -226,7 +251,6 @@ int get_uuid(char *path, char *uuid, int uuidlen, char *u)
 	}
 	return 1;
 }
-#endif
 
 /* Iterate through /etc/mtab, finding mountpoints
  * at or below a given path
@@ -282,8 +306,10 @@ void nfsd_fh(FILE *f)
 	if (readline(fileno(f), &lbuf, &lbuflen) != 1)
 		return;
 
-	cp = lbuf;
+	xlog(D_CALL, "nfsd_fh: inbuf '%s'", lbuf);
 
+	cp = lbuf;
+	
 	dom = malloc(strlen(cp));
 	if (dom == NULL)
 		return;
@@ -434,20 +460,15 @@ void nfsd_fh(FILE *f)
 				if (!is_mountpoint(path))
 					continue;
 			check_uuid:
-#if USE_BLKID
 				if (exp->m_export.e_uuid)
 					get_uuid(NULL, exp->m_export.e_uuid,
 						 uuidlen, u);
-				else if (get_uuid(path, NULL,
-						  uuidlen, u) == 0)
+				else if (get_uuid(path, NULL, uuidlen, u) == 0)
 					continue;
 
 				if (memcmp(u, fhuuid, uuidlen) != 0)
 					continue;
 				break;
-#else
-				continue;
-#endif
 			}
 			if (use_ipaddr) {
 				if (he == NULL) {
@@ -508,12 +529,15 @@ void nfsd_fh(FILE *f)
 	 */
 	qword_printint(f, 0x7fffffff);
 	if (found)
-		qword_print(f, found->e_path);
+		qword_print(f, found_path);
 	qword_eol(f);
  out:
-	free(found_path);
-	free(he);
+	if (found_path)
+		free(found_path);
+	if (he)
+		free(he);
 	free(dom);
+	xlog(D_CALL, "nfsd_fh: found %p path %s", found, found ? found->e_path : NULL);
 	return;		
 }
 
@@ -565,24 +589,29 @@ static int dump_to_cache(FILE *f, char *domain, char *path, struct exportent *ex
 	qword_print(f, path);
 	qword_printint(f, time(0)+30*60);
 	if (exp) {
-		qword_printint(f, exp->e_flags);
+		int different_fs = strcmp(path, exp->e_path) != 0;
+		
+		if (different_fs)
+			qword_printint(f, exp->e_flags & ~NFSEXP_FSID);
+		else
+			qword_printint(f, exp->e_flags);
 		qword_printint(f, exp->e_anonuid);
 		qword_printint(f, exp->e_anongid);
 		qword_printint(f, exp->e_fsid);
 		write_fsloc(f, exp, path);
 		write_secinfo(f, exp);
-#if USE_BLKID
- 		if (exp->e_uuid == NULL) {
+ 		if (exp->e_uuid == NULL || different_fs) {
  			char u[16];
  			if (get_uuid(path, NULL, 16, u)) {
  				qword_print(f, "uuid");
  				qword_printhex(f, u, 16);
  			}
- 		} else if (exp->e_uuid) {
+ 		} else {
+ 			char u[16];
+ 			get_uuid(NULL, exp->e_uuid, 16, u);
  			qword_print(f, "uuid");
- 			qword_printhex(f, exp->e_uuid, 16);
+ 			qword_printhex(f, u, 16);
  		}
-#endif
 	}
 	return qword_eol(f);
 }
@@ -607,6 +636,8 @@ void nfsd_export(FILE *f)
 	if (readline(fileno(f), &lbuf, &lbuflen) != 1)
 		return;
 
+	xlog(D_CALL, "nfsd_export: inbuf '%s'", lbuf);
+
 	cp = lbuf;
 	dom = malloc(strlen(cp));
 	path = malloc(strlen(cp));
@@ -654,9 +685,9 @@ void nfsd_export(FILE *f)
 			}
 			/* If one is a CROSSMOUNT, then prefer the longest path */
 			if (((found->m_export.e_flags & NFSEXP_CROSSMOUNT) ||
-			     (found->m_export.e_flags & NFSEXP_CROSSMOUNT)) &&
+			     (exp->m_export.e_flags & NFSEXP_CROSSMOUNT)) &&
 			    strlen(found->m_export.e_path) !=
-			    strlen(found->m_export.e_path)) {
+			    strlen(exp->m_export.e_path)) {
 
 				if (strlen(exp->m_export.e_path) >
 				    strlen(found->m_export.e_path)) {
@@ -686,6 +717,7 @@ void nfsd_export(FILE *f)
 		dump_to_cache(f, dom, path, NULL);
 	}
  out:
+	xlog(D_CALL, "nfsd_export: found %p path %s", found, path ? path : NULL);
 	if (dom) free(dom);
 	if (path) free(path);
 	if (he) free(he);