From 3e020c15fd041aea4918103c00c9143a0667c79b Mon Sep 17 00:00:00 2001
From: Ross Lagerwall <rosslagerwall@gmail.com>
Date: Sun, 20 Jul 2014 23:12:59 +0100
Subject: [PATCH] libnfs: Add fstat64, analagous to stat64

Signed-off-by: Ross Lagerwall <rosslagerwall@gmail.com>
---
 include/nfsc/libnfs.h | 30 ++++++++++++++++++++++++++++++
 lib/libnfs-sync.c     | 20 ++++++++++++++++++++
 lib/libnfs.c          | 30 ++++++++++++++++++++++++++++++
 3 files changed, 80 insertions(+)

diff --git a/include/nfsc/libnfs.h b/include/nfsc/libnfs.h
index 5d5d542..df102d9 100644
--- a/include/nfsc/libnfs.h
+++ b/include/nfsc/libnfs.h
@@ -312,6 +312,7 @@ EXTERN int nfs_stat64(struct nfs_context *nfs, const char *path, struct nfs_stat
  * -errno : An error occured.
  *          data is the error string.
  */
+/* This function is deprecated. Use nfs_fstat64_async() instead */
 EXTERN int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data);
 /*
  * Sync fstat(nfsfh *)
@@ -325,6 +326,35 @@ EXTERN int nfs_fstat(struct nfs_context *nfs, struct nfsfh *nfsfh, struct __stat
 EXTERN int nfs_fstat(struct nfs_context *nfs, struct nfsfh *nfsfh, struct stat *st);
 #endif
 
+/* nfs_fstat64
+ * 64 bit version of fstat. All fields are always 64bit.
+ * Use these functions instead of nfs_fstat[_async](), especially if you
+ * have weird stat structures.
+ */
+/*
+ * FSTAT()
+ */
+/*
+ * Async fstat(nfsfh *)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is struct stat *
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+EXTERN int nfs_fstat64_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data);
+/*
+ * Sync fstat(nfsfh *)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+EXTERN int nfs_fstat64(struct nfs_context *nfs, struct nfsfh *nfsfh, struct nfs_stat_64 *st);
+
 
 
 /*
diff --git a/lib/libnfs-sync.c b/lib/libnfs-sync.c
index 39c68c6..9d351f7 100644
--- a/lib/libnfs-sync.c
+++ b/lib/libnfs-sync.c
@@ -453,6 +453,26 @@ int nfs_fstat(struct nfs_context *nfs, struct nfsfh *nfsfh, struct stat *st)
 	return cb_data.status;
 }
 
+/*
+ * fstat64()
+ */
+int nfs_fstat64(struct nfs_context *nfs, struct nfsfh *nfsfh, struct nfs_stat_64 *st)
+{
+	struct sync_cb_data cb_data;
+
+	cb_data.is_finished = 0;
+	cb_data.return_data = st;
+
+	if (nfs_fstat64_async(nfs, nfsfh, stat64_cb, &cb_data) != 0) {
+		nfs_set_error(nfs, "nfs_fstat64_async failed");
+		return -1;
+	}
+
+	wait_for_nfs_reply(nfs, &cb_data);
+
+	return cb_data.status;
+}
+
 
 /*
  * pwrite()
diff --git a/lib/libnfs.c b/lib/libnfs.c
index e9a5526..30ad41f 100644
--- a/lib/libnfs.c
+++ b/lib/libnfs.c
@@ -2242,6 +2242,36 @@ int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, voi
 	return 0;
 }
 
+/*
+ * Async fstat64()
+ */
+int nfs_fstat64_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
+{
+	struct nfs_cb_data *data;
+	struct GETATTR3args args;
+
+	data = malloc(sizeof(struct nfs_cb_data));
+	if (data == NULL) {
+		rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
+		return -1;
+	}
+	memset(data, 0, sizeof(struct nfs_cb_data));
+	data->nfs          = nfs;
+	data->cb           = cb;
+	data->private_data = private_data;
+
+	memset(&args, 0, sizeof(GETATTR3args));
+	args.object = nfsfh->fh;
+
+	if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat64_1_cb, &args, data) != 0) {
+		rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
+		data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+		free_nfs_cb_data(data);
+		return -1;
+	}
+	return 0;
+}
+
 
 
 /*
-- 
2.34.1