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| author |   Tom Tucker <tom@opengridcomputing.com> | 2007-12-30 21:08:31 -0600 |
|---|---|---|
| committer |   J. Bruce Fields <bfields@citi.umich.edu> | 2008-02-01 16:42:13 -0500 |
| commit | dc9a16e49dbba3dd042e6aec5d9a7929e099a89b (patch) | |
| tree | 5aee4ec75869697350d3cebdfaaf8e10435ebbc2 /net/sunrpc/sysctl.c | |
| parent | svc: Add transport hdr size for defer/revisit (diff) | |
| download | wireguard-linux-dc9a16e49dbba3dd042e6aec5d9a7929e099a89b.tar.xz wireguard-linux-dc9a16e49dbba3dd042e6aec5d9a7929e099a89b.zip | |
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.c | 31 |
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 } }; |