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Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index a2854f6e0743..6a78cf70761d 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2511,6 +2511,15 @@ static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
}
#endif
+/**
+ * struct do_proc_dointvec_minmax_conv_param - proc_dointvec_minmax() range checking structure
+ * @min: pointer to minimum allowable value
+ * @max: pointer to maximum allowable value
+ *
+ * The do_proc_dointvec_minmax_conv_param structure provides the
+ * minimum and maximum values for doing range checking for those sysctl
+ * parameters that use the proc_dointvec_minmax() handler.
+ */
struct do_proc_dointvec_minmax_conv_param {
int *min;
int *max;
@@ -2554,7 +2563,7 @@ static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
* This routine will ensure the values are within the range specified by
* table->extra1 (min) and table->extra2 (max).
*
- * Returns 0 on success.
+ * Returns 0 on success or -EINVAL on write when the range check fails.
*/
int proc_dointvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
@@ -2567,6 +2576,15 @@ int proc_dointvec_minmax(struct ctl_table *table, int write,
do_proc_dointvec_minmax_conv, &param);
}
+/**
+ * struct do_proc_douintvec_minmax_conv_param - proc_douintvec_minmax() range checking structure
+ * @min: pointer to minimum allowable value
+ * @max: pointer to maximum allowable value
+ *
+ * The do_proc_douintvec_minmax_conv_param structure provides the
+ * minimum and maximum values for doing range checking for those sysctl
+ * parameters that use the proc_douintvec_minmax() handler.
+ */
struct do_proc_douintvec_minmax_conv_param {
unsigned int *min;
unsigned int *max;
@@ -2614,7 +2632,7 @@ static int do_proc_douintvec_minmax_conv(unsigned long *lvalp,
* check for UINT_MAX to avoid having to support wrap around uses from
* userspace.
*
- * Returns 0 on success.
+ * Returns 0 on success or -ERANGE on write when the range check fails.
*/
int proc_douintvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)