[PATCH] uml: implement hostfs syncing
Actually implement the hostfs "sync" method.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c
index 75d7af9..56d3f87 100644
--- a/arch/um/os-Linux/user_syms.c
+++ b/arch/um/os-Linux/user_syms.c
@@ -83,6 +83,9 @@
EXPORT_SYMBOL_PROTO(getuid);
+EXPORT_SYMBOL_PROTO(fsync);
+EXPORT_SYMBOL_PROTO(fdatasync);
+
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
diff --git a/fs/hostfs/hostfs.h b/fs/hostfs/hostfs.h
index c1516d0..67bca0d 100644
--- a/fs/hostfs/hostfs.h
+++ b/fs/hostfs/hostfs.h
@@ -69,6 +69,7 @@
extern int write_file(int fd, unsigned long long *offset, const char *buf,
int len);
extern int lseek_file(int fd, long long offset, int whence);
+extern int fsync_file(int fd, int datasync);
extern int file_create(char *name, int ur, int uw, int ux, int gr,
int gw, int gx, int or, int ow, int ox);
extern int set_attr(const char *file, struct hostfs_iattr *attrs);
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 88e68ca..b2d1820 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -382,7 +382,7 @@
int hostfs_fsync(struct file *file, struct dentry *dentry, int datasync)
{
- return(0);
+ return fsync_file(HOSTFS_I(dentry->d_inode)->fd, datasync);
}
static struct file_operations hostfs_file_fops = {
diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c
index 4796e84..b97809d 100644
--- a/fs/hostfs/hostfs_user.c
+++ b/fs/hostfs/hostfs_user.c
@@ -153,10 +153,24 @@
int ret;
ret = lseek64(fd, offset, whence);
- if(ret < 0) return(-errno);
+ if(ret < 0)
+ return(-errno);
return(0);
}
+int fsync_file(int fd, int datasync)
+{
+ int ret;
+ if (datasync)
+ ret = fdatasync(fd);
+ else
+ ret = fsync(fd);
+
+ if (ret < 0)
+ return -errno;
+ return 0;
+}
+
void close_file(void *stream)
{
close(*((int *) stream));