X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=support%2Fnfs%2Fcacheio.c;h=d7ad4293762f4b6dd583fec668cb0ea9df47b733;hp=2af4fa3e3e8ce58b319c06cbb0253f2aca792221;hb=7d6fa6e153b26e0e9ad2dfdff3ce2168c46dd16b;hpb=1275be70ca6cd6c4bec07a3381f7b510086c5526

diff --git a/support/nfs/cacheio.c b/support/nfs/cacheio.c
index 2af4fa3..d7ad429 100644
--- a/support/nfs/cacheio.c
+++ b/support/nfs/cacheio.c
@@ -205,16 +205,17 @@ int readline(int fd, char **buf, int *lenp)
 	 */
 		char *new;
 		int nl;
-		*lenp += 128;
+		*lenp *= 2;
 		new = realloc(*buf, *lenp);
 		if (new == NULL)
 			return 0;
-		nl = read(fd, *buf +len, *lenp - len);
-		if (nl <= 0 )
+		*buf = new;
+		nl = read(fd, *buf + len, *lenp - len);
+		if (nl <= 0)
 			return 0;
-		new += nl;
+		len += nl;
 	}
-	(*buf)[len-1] = 0;
+	(*buf)[len-1] = '\0';
 	return 1;
 }
 
@@ -227,6 +228,49 @@ int
 check_new_cache(void)
 {
 	struct stat stb;
-	return (stat("/proc/fs/nfs/filehandle", &stb) == 0);
+	return	(stat("/proc/fs/nfs/filehandle", &stb) == 0) ||
+		(stat("/proc/fs/nfsd/filehandle", &stb) == 0);
 }	
 
+
+/* flush the kNFSd caches.
+ * Set the flush time to the mtime of _PATH_ETAB or
+ * if force, to now.
+ * the caches to flush are:
+ *  auth.unix.ip nfsd.export nfsd.fh
+ */
+
+void
+cache_flush(int force)
+{
+	struct stat stb;
+	int c;
+	char stime[20];
+	char path[200];
+	/* Note: the order of these caches is important.
+	 * The need to be flushed in dependancy order. So
+	 * a cache that references items in another cache,
+	 * as nfsd.fh entries reference items in nfsd.export,
+	 * must be flushed before the cache that it references.
+	 */
+	static char *cachelist[] = {
+		"auth.unix.ip",
+		"nfsd.fh",
+		"nfsd.export",
+		NULL
+	};
+	stb.st_mtime = time(0);
+	if (!force)
+		stat(_PATH_ETAB, &stb);
+	
+	sprintf(stime, "%ld\n", stb.st_mtime);
+	for (c=0; cachelist[c]; c++) {
+		int fd;
+		sprintf(path, "/proc/net/rpc/%s/flush", cachelist[c]);
+		fd = open(path, O_RDWR);
+		if (fd >= 0) {
+			write(fd, stime, strlen(stime));
+			close(fd);
+		}
+	}
+}