From 4ecbee4f9400fe95df9c8709c90942bbe79194b4 Mon Sep 17 00:00:00 2001
From: Ingo Weinhold <ingo_weinhold@gmx.de>
Date: Thu, 26 Mar 2009 00:50:44 +0000
Subject: [PATCH] * Our error codes are already negative, so return ENOSYS
 instead of -ENOSYS. * fuse_fs_utimens(): Fall back to the utime() hook, if
 utimens() is not   available.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29720 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 .../userlandfs/server/fuse/fuse_fs.cpp        | 71 +++++++++++--------
 1 file changed, 40 insertions(+), 31 deletions(-)

diff --git a/src/add-ons/kernel/file_systems/userlandfs/server/fuse/fuse_fs.cpp b/src/add-ons/kernel/file_systems/userlandfs/server/fuse/fuse_fs.cpp
index d7524a14ad..62831b171c 100644
--- a/src/add-ons/kernel/file_systems/userlandfs/server/fuse/fuse_fs.cpp
+++ b/src/add-ons/kernel/file_systems/userlandfs/server/fuse/fuse_fs.cpp
@@ -16,7 +16,7 @@ int
 fuse_fs_getattr(struct fuse_fs* fs, const char* path, struct stat* buf)
 {
 	if (fs->ops.getattr == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.getattr(path, buf);
 }
 
@@ -26,7 +26,7 @@ fuse_fs_fgetattr(struct fuse_fs* fs, const char* path, struct stat* buf,
 	struct fuse_file_info* fi)
 {
 	if (fs->ops.fgetattr == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.fgetattr(path, buf, fi);
 }
 
@@ -35,7 +35,7 @@ int
 fuse_fs_rename(struct fuse_fs* fs, const char* oldpath, const char* newpath)
 {
 	if (fs->ops.rename == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.rename(oldpath, newpath);
 }
 
@@ -44,7 +44,7 @@ int
 fuse_fs_unlink(struct fuse_fs* fs, const char* path)
 {
 	if (fs->ops.unlink == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.unlink(path);
 }
 
@@ -53,7 +53,7 @@ int
 fuse_fs_rmdir(struct fuse_fs* fs, const char* path)
 {
 	if (fs->ops.rmdir == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.rmdir(path);
 }
 
@@ -62,7 +62,7 @@ int
 fuse_fs_symlink(struct fuse_fs* fs, const char* linkname, const char* path)
 {
 	if (fs->ops.symlink == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.symlink(linkname, path);
 }
 
@@ -71,7 +71,7 @@ int
 fuse_fs_link(struct fuse_fs* fs, const char* oldpath, const char* newpath)
 {
 	if (fs->ops.link == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.link(oldpath, newpath);
 }
 
@@ -100,7 +100,7 @@ fuse_fs_read(struct fuse_fs* fs, const char* path, char *buf, size_t size,
 	off_t off, struct fuse_file_info* fi)
 {
 	if (fs->ops.read == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.read(path, buf, size, off, fi);
 }
 
@@ -110,7 +110,7 @@ fuse_fs_write(struct fuse_fs* fs, const char* path, const char* buf,
 	size_t size, off_t off, struct fuse_file_info* fi)
 {
 	if (fs->ops.write == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.write(path, buf, size, off, fi);
 }
 
@@ -120,7 +120,7 @@ fuse_fs_fsync(struct fuse_fs* fs, const char* path, int datasync,
 	struct fuse_file_info* fi)
 {
 	if (fs->ops.fsync == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.fsync(path, datasync, fi);
 }
 
@@ -129,7 +129,7 @@ int
 fuse_fs_flush(struct fuse_fs* fs, const char* path, struct fuse_file_info* fi)
 {
 	if (fs->ops.flush == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.flush(path, fi);
 }
 
@@ -157,7 +157,7 @@ fuse_fs_readdir(struct fuse_fs* fs, const char* path, void* buf,
 	fuse_fill_dir_t filler, off_t off, struct fuse_file_info* fi)
 {
 	if (fs->ops.readdir == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.readdir(path, buf, filler, off, fi);
 }
 
@@ -167,7 +167,7 @@ fuse_fs_fsyncdir(struct fuse_fs* fs, const char* path, int datasync,
 	struct fuse_file_info* fi)
 {
 	if (fs->ops.fsyncdir == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.fsyncdir(path, datasync, fi);
 }
 
@@ -187,7 +187,7 @@ fuse_fs_create(struct fuse_fs* fs, const char* path, mode_t mode,
 	struct fuse_file_info* fi)
 {
 	if (fs->ops.create == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.create(path, mode, fi);
 }
 
@@ -197,7 +197,7 @@ fuse_fs_lock(struct fuse_fs* fs, const char* path, struct fuse_file_info* fi,
 	int cmd, struct flock* lock)
 {
 	if (fs->ops.lock == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.lock(path, fi, cmd, lock);
 }
 
@@ -206,7 +206,7 @@ int
 fuse_fs_chmod(struct fuse_fs* fs, const char* path, mode_t mode)
 {
 	if (fs->ops.chmod == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.chmod(path, mode);
 }
 
@@ -215,7 +215,7 @@ int
 fuse_fs_chown(struct fuse_fs* fs, const char* path, uid_t uid, gid_t gid)
 {
 	if (fs->ops.chown == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.chown(path, uid, gid);
 }
 
@@ -224,7 +224,7 @@ int
 fuse_fs_truncate(struct fuse_fs* fs, const char* path, off_t size)
 {
 	if (fs->ops.truncate == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.truncate(path, size);
 }
 
@@ -234,7 +234,7 @@ fuse_fs_ftruncate(struct fuse_fs* fs, const char* path, off_t size,
 	struct fuse_file_info* fi)
 {
 	if (fs->ops.ftruncate == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.ftruncate(path, size, fi);
 }
 
@@ -243,9 +243,18 @@ int
 fuse_fs_utimens(struct fuse_fs* fs, const char* path,
 	const struct timespec tv[2])
 {
-	if (fs->ops.utimens == NULL)
-		return -ENOSYS;
-	return fs->ops.utimens(path, tv);
+	if (fs->ops.utimens != NULL)
+		return fs->ops.utimens(path, tv);
+
+	if (fs->ops.utime != NULL) {
+		utimbuf timeBuffer = {
+			tv[0].tv_sec,	// access time
+			tv[1].tv_sec	// modification time
+		};
+		return fs->ops.utime(path, &timeBuffer);
+	}
+
+	return ENOSYS;
 }
 
 
@@ -253,7 +262,7 @@ int
 fuse_fs_access(struct fuse_fs* fs, const char* path, int mask)
 {
 	if (fs->ops.access == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.access(path, mask);
 }
 
@@ -262,7 +271,7 @@ int
 fuse_fs_readlink(struct fuse_fs* fs, const char* path, char* buf, size_t len)
 {
 	if (fs->ops.readlink == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.readlink(path, buf, len);
 }
 
@@ -271,7 +280,7 @@ int
 fuse_fs_mknod(struct fuse_fs* fs, const char* path, mode_t mode, dev_t rdev)
 {
 	if (fs->ops.mknod == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.mknod(path, mode, rdev);
 }
 
@@ -280,7 +289,7 @@ int
 fuse_fs_mkdir(struct fuse_fs* fs, const char* path, mode_t mode)
 {
 	if (fs->ops.mkdir == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.mkdir(path, mode);
 }
 
@@ -290,7 +299,7 @@ fuse_fs_setxattr(struct fuse_fs* fs, const char* path, const char* name,
 	const char* value, size_t size, int flags)
 {
 	if (fs->ops.setxattr == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.setxattr(path, name, value, size, flags);
 }
 
@@ -300,7 +309,7 @@ fuse_fs_getxattr(struct fuse_fs* fs, const char* path, const char* name,
 	char* value, size_t size)
 {
 	if (fs->ops.getxattr == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.getxattr(path, name, value, size);
 }
 
@@ -309,7 +318,7 @@ int
 fuse_fs_listxattr(struct fuse_fs* fs, const char* path, char* list, size_t size)
 {
 	if (fs->ops.listxattr == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.listxattr(path, list, size);
 }
 
@@ -318,7 +327,7 @@ int
 fuse_fs_removexattr(struct fuse_fs* fs, const char* path, const char* name)
 {
 	if (fs->ops.removexattr == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.removexattr(path, name);
 }
 
@@ -328,7 +337,7 @@ fuse_fs_bmap(struct fuse_fs* fs, const char* path, size_t blocksize,
 	uint64_t* idx)
 {
 	if (fs->ops.bmap == NULL)
-		return -ENOSYS;
+		return ENOSYS;
 	return fs->ops.bmap(path, blocksize, idx);
 }