[PATCH v2 1/6] sysctl: Fixes idmap_cache_timeout bounds

nicolas.bouchinet
2025-02-24T09:58:59Z

From: Nicolas Bouchinet <nicolas.bouchinet@ssi.gouv.fr>

Bound idmap_cache_timeout sysctl writings between SYSCTL_ZERO
and SYSCTL_INT_MAX.

The proc_handler has thus been updated to proc_dointvec_minmax.

Signed-off-by: Nicolas Bouchinet <nicolas.bouchinet@ssi.gouv.fr>
---
fs/nfs/nfs4sysctl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/nfs4sysctl.c b/fs/nfs/nfs4sysctl.c
index d1a92d8f8ba4c..c36d89afb13af 100644
--- a/fs/nfs/nfs4sysctl.c
+++ b/fs/nfs/nfs4sysctl.c
@@ -32,7 +32,9 @@ static const struct ctl_table nfs4_cb_sysctls[] = {
.data = &nfs_idmap_cache_timeout,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_INT_MAX,
},
};

--
2.48.1