From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
When running nfsd_name_to_handle_at(), we usually want to see the same
namespace as knfsd, so add helpers.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
support/include/nfsd_path.h | 4 +++
support/misc/nfsd_path.c | 66 +++++++++++++++++++++++++++++++++++++
2 files changed, 70 insertions(+)
diff --git a/support/include/nfsd_path.h b/support/include/nfsd_path.h
index 8331ff96a277..3b73aadd8af7 100644
--- a/support/include/nfsd_path.h
+++ b/support/include/nfsd_path.h
@@ -6,6 +6,7 @@
#include <sys/stat.h>
+struct file_handle;
struct statfs64;
void nfsd_path_init(void);
@@ -25,4 +26,7 @@ char * nfsd_realpath(const char *path, char *resolved_path);
ssize_t nfsd_path_read(int fd, char *buf, size_t len);
ssize_t nfsd_path_write(int fd, const char *buf, size_t len);
+int nfsd_name_to_handle_at(int fd, const char *path,
+ struct file_handle *fh,
+ int *mount_id, int flags);
#endif
diff --git a/support/misc/nfsd_path.c b/support/misc/nfsd_path.c
index ab6c98dbe395..1f6dfd4b642b 100644
--- a/support/misc/nfsd_path.c
+++ b/support/misc/nfsd_path.c
@@ -6,6 +6,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/vfs.h>
+#include <fcntl.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
@@ -14,6 +15,7 @@
#include "xmalloc.h"
#include "xlog.h"
#include "xstat.h"
+#include "nfslib.h"
#include "nfsd_path.h"
#include "workqueue.h"
@@ -340,3 +342,67 @@ nfsd_path_write(int fd, const char *buf, size_t len)
return write(fd, buf, len);
return nfsd_run_write(nfsd_wq, fd, buf, len);
}
+
+#if defined(HAVE_NAME_TO_HANDLE_AT)
+struct nfsd_handle_data {
+ int fd;
+ const char *path;
+ struct file_handle *fh;
+ int *mount_id;
+ int flags;
+ int ret;
+ int err;
+};
+
+static void
+nfsd_name_to_handle_func(void *data)
+{
+ struct nfsd_handle_data *d = data;
+
+ d->ret = name_to_handle_at(d->fd, d->path,
+ d->fh, d->mount_id, d->flags);
+ if (d->ret < 0)
+ d->err = errno;
+}
+
+static int
+nfsd_run_name_to_handle_at(struct xthread_workqueue *wq,
+ int fd, const char *path, struct file_handle *fh,
+ int *mount_id, int flags)
+{
+ struct nfsd_handle_data data = {
+ fd,
+ path,
+ fh,
+ mount_id,
+ flags,
+ 0,
+ 0
+ };
+
+ xthread_work_run_sync(wq, nfsd_name_to_handle_func, &data);
+ if (data.ret < 0)
+ errno = data.err;
+ return data.ret;
+}
+
+int
+nfsd_name_to_handle_at(int fd, const char *path, struct file_handle *fh,
+ int *mount_id, int flags)
+{
+ if (!nfsd_wq)
+ return name_to_handle_at(fd, path, fh, mount_id, flags);
+
+ return nfsd_run_name_to_handle_at(nfsd_wq, fd, path, fh,
+ mount_id, flags);
+}
+#else
+int
+nfsd_name_to_handle_at(int UNUSED(fd), const char *UNUSED(path),
+ struct file_handle *UNUSED(fh),
+ int *UNUSED(mount_id), int UNUSED(flags))
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
--
2.25.2
