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authorTom Tucker <tom@opengridcomputing.com>2007-12-30 21:08:31 -0600
committerJ. Bruce Fields <bfields@citi.umich.edu>2008-02-01 16:42:13 -0500
commitdc9a16e49dbba3dd042e6aec5d9a7929e099a89b (patch)
tree5aee4ec75869697350d3cebdfaaf8e10435ebbc2 /net/sunrpc/sysctl.c
parent260c1d1298f6703d38fdccd3dd5a310766327340 (diff)
svc: Add /proc/sys/sunrpc/transport files
Add a file that when read lists the set of registered svc transports. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Acked-by: Neil Brown <neilb@suse.de> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'net/sunrpc/sysctl.c')
-rw-r--r--net/sunrpc/sysctl.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/net/sunrpc/sysctl.c b/net/sunrpc/sysctl.c
index bada7de0c2fc..0f8c439b848a 100644
--- a/net/sunrpc/sysctl.c
+++ b/net/sunrpc/sysctl.c
@@ -18,6 +18,7 @@
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/stats.h>
+#include <linux/sunrpc/svc_xprt.h>
/*
* Declare the debug flags here
@@ -55,6 +56,30 @@ rpc_unregister_sysctl(void)
}
}
+static int proc_do_xprt(ctl_table *table, int write, struct file *file,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ char tmpbuf[256];
+ int len;
+ if ((*ppos && !write) || !*lenp) {
+ *lenp = 0;
+ return 0;
+ }
+ if (write)
+ return -EINVAL;
+ else {
+ len = svc_print_xprts(tmpbuf, sizeof(tmpbuf));
+ if (!access_ok(VERIFY_WRITE, buffer, len))
+ return -EFAULT;
+
+ if (__copy_to_user(buffer, tmpbuf, len))
+ return -EFAULT;
+ }
+ *lenp -= len;
+ *ppos += len;
+ return 0;
+}
+
static int
proc_dodebug(ctl_table *table, int write, struct file *file,
void __user *buffer, size_t *lenp, loff_t *ppos)
@@ -147,6 +172,12 @@ static ctl_table debug_table[] = {
.mode = 0644,
.proc_handler = &proc_dodebug
},
+ {
+ .procname = "transports",
+ .maxlen = 256,
+ .mode = 0444,
+ .proc_handler = &proc_do_xprt,
+ },
{ .ctl_name = 0 }
};