relayd: replace uses of block FDs by the fs_handle interface

[lttng-tools.git] / src / common / fs-handle.c

diff --git a/src/common/fs-handle.c b/src/common/fs-handle.c
index e90f06d325487f4322b220e041f91d094745cfe6..58763a0b2d60cc2fff65f1e8c7e29422e84a9b27 100644 (file)
--- a/src/common/fs-handle.c
+++ b/src/common/fs-handle.c
@@ -15,8 +15,9 @@
  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#include <common/fs-handle.h>
 #include <common/fs-handle-internal.h>
+#include <common/fs-handle.h>
+#include <common/readwrite.h>
 
 LTTNG_HIDDEN
 int fs_handle_get_fd(struct fs_handle *handle)
@@ -41,3 +42,71 @@ int fs_handle_close(struct fs_handle *handle)
 {
        return handle->close(handle);
 }
+
+LTTNG_HIDDEN
+ssize_t fs_handle_read(struct fs_handle *handle, void *buf, size_t count)
+{
+       ssize_t ret;
+       const int fd = fs_handle_get_fd(handle);
+
+       if (fd < 0) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = lttng_read(fd, buf, count);
+       fs_handle_put_fd(handle);
+end:
+       return ret;
+}
+
+LTTNG_HIDDEN
+ssize_t fs_handle_write(struct fs_handle *handle, const void *buf, size_t count)
+{
+       ssize_t ret;
+       const int fd = fs_handle_get_fd(handle);
+
+       if (fd < 0) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = lttng_write(fd, buf, count);
+       fs_handle_put_fd(handle);
+end:
+       return ret;
+}
+
+LTTNG_HIDDEN
+int fs_handle_truncate(struct fs_handle *handle, off_t offset)
+{
+        int ret;
+       const int fd = fs_handle_get_fd(handle);
+
+       if (fd < 0) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = ftruncate(fd, offset);
+       fs_handle_put_fd(handle);
+end:
+       return ret;
+}
+
+LTTNG_HIDDEN
+int fs_handle_seek(struct fs_handle *handle, off_t offset, int whence)
+{
+        int ret;
+       const int fd = fs_handle_get_fd(handle);
+
+       if (fd < 0) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = lseek(fd, offset, whence);
+       fs_handle_put_fd(handle);
+end:
+       return ret;
+}