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authorEric Dumazet <edumazet@google.com>2021-03-25 21:08:13 +0300
committerDavid S. Miller <davem@davemloft.net>2021-03-26 03:39:33 +0300
commitcb9444130662c6c13022579c861098f212db2562 (patch)
tree8284fffb678daa077898d0d65f36e6e9488585e1 /fs/proc
parentd54e1348d8ef19d5b2cd555e22ffc356f755d66e (diff)
downloadlinux-cb9444130662c6c13022579c861098f212db2562.tar.xz
sysctl: add proc_dou8vec_minmax()
Networking has many sysctls that could fit in one u8. This patch adds proc_dou8vec_minmax() for this purpose. Note that the .extra1 and .extra2 fields are pointing to integers, because it makes conversions easier. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/proc_sysctl.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 984e42f8cb11..7256b8962e3c 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -1108,6 +1108,11 @@ static int sysctl_check_table_array(const char *path, struct ctl_table *table)
err |= sysctl_err(path, table, "array not allowed");
}
+ if (table->proc_handler == proc_dou8vec_minmax) {
+ if (table->maxlen != sizeof(u8))
+ err |= sysctl_err(path, table, "array not allowed");
+ }
+
return err;
}
@@ -1123,6 +1128,7 @@ static int sysctl_check_table(const char *path, struct ctl_table *table)
(table->proc_handler == proc_douintvec) ||
(table->proc_handler == proc_douintvec_minmax) ||
(table->proc_handler == proc_dointvec_minmax) ||
+ (table->proc_handler == proc_dou8vec_minmax) ||
(table->proc_handler == proc_dointvec_jiffies) ||
(table->proc_handler == proc_dointvec_userhz_jiffies) ||
(table->proc_handler == proc_dointvec_ms_jiffies) ||