Initialize the /dev/splatctl device buffer

On open() and initialize the buffer with the SPL version string.  The
user space splat utility expects to find the SPL version string when
it opens and reads from /dev/splatctl.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

diff --git a/module/spl/spl-generic.c b/module/spl/spl-generic.c
index d5c1523e1a2d45d7cbb47e502bc1dd21e3e044b6..956be688223f2774e2462bc0fc5fb79855bee1f5 100644 (file)
--- a/module/spl/spl-generic.c
+++ b/module/spl/spl-generic.c
@@ -47,6 +47,7 @@
 #define DEBUG_SUBSYSTEM S_GENERIC
 
 char spl_version[16] = "SPL v" SPL_META_VERSION;
+EXPORT_SYMBOL(spl_version);
 
 long spl_hostid = 0;
 EXPORT_SYMBOL(spl_hostid);

diff --git a/module/splat/splat-ctl.c b/module/splat/splat-ctl.c
index 09f0847109e5bde571cf272da0f7ff7585b1d86b..ba68de212269b0a5d504496a89b2d106e0e0f727 100644 (file)
--- a/module/splat/splat-ctl.c
+++ b/module/splat/splat-ctl.c
@@ -70,11 +70,14 @@ splat_open(struct inode *inode, struct file *file)
                kfree(info);
                return -ENOMEM;
        }
+       memset(info->info_buffer, 0, info->info_size);
 
        info->info_head = info->info_buffer;
        file->private_data = (void *)info;
 
-        return 0;
+       splat_print(file, "%s\n", spl_version);
+
+       return 0;
 }
 
 static int