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authorEric W. Biederman <ebiederm@xmission.com>2007-10-18 03:05:57 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-18 14:37:23 -0700
commit49ffcf8f99e8d33ec8afb450956804af518fd788 (patch)
treef55aac9ddebb4f798ba8ff8152c73a73a3dc93a2 /kernel/sysctl_check.c
parentfc6cd25b738c2369d7ed3a6ef2ca248b51fcd2d4 (diff)
downloadlinux-2.6.34-ux500-49ffcf8f99e8d33ec8afb450956804af518fd788.tar.gz
sysctl: update sysctl_check_table
Well it turns out after I dug into the problems a little more I was returning a few false positives so this patch updates my logic to remove them. - Don't complain about 0 ctl_names in sysctl_check_binary_path It is valid for someone to remove the sysctl binary interface and still keep the same sysctl proc interface. - Count ctl_names and procnames as matching if they both don't exist. - Only warn about missing min&max when the generic functions care. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sysctl_check.c')
-rw-r--r--kernel/sysctl_check.c36
1 files changed, 22 insertions, 14 deletions
diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c
index 8bce52cc06d..6aa4dee7943 100644
--- a/kernel/sysctl_check.c
+++ b/kernel/sysctl_check.c
@@ -565,6 +565,7 @@ static struct trans_ctl_table trans_net_ipv6_table[] = {
{ NET_IPV6_IP6FRAG_TIME, "ip6frag_time" },
{ NET_IPV6_IP6FRAG_SECRET_INTERVAL, "ip6frag_secret_interval" },
{ NET_IPV6_MLD_MAX_MSF, "mld_max_msf" },
+ { 2088 /* IPQ_QMAX */, "ip6_queue_maxlen" },
{}
};
@@ -723,6 +724,7 @@ static struct trans_ctl_table trans_net_table[] = {
{ NET_LLC, "llc", trans_net_llc_table },
{ NET_NETFILTER, "netfilter", trans_net_netfilter_table },
{ NET_DCCP, "dccp", trans_net_dccp_table },
+ { 2089, "nf_conntrack_max" },
{}
};
@@ -1421,12 +1423,14 @@ static int sysctl_check_dir(struct ctl_table *table)
ref = sysctl_check_lookup(table);
if (ref) {
int match = 0;
- if (table->procname && ref->procname &&
- (strcmp(table->procname, ref->procname) == 0))
+ if ((!table->procname && !ref->procname) ||
+ (table->procname && ref->procname &&
+ (strcmp(table->procname, ref->procname) == 0)))
match++;
- if (table->ctl_name && ref->ctl_name &&
- (table->ctl_name == ref->ctl_name))
+ if ((!table->ctl_name && !ref->ctl_name) ||
+ (table->ctl_name && ref->ctl_name &&
+ (table->ctl_name == ref->ctl_name)))
match++;
if (match != 2) {
@@ -1463,8 +1467,8 @@ static void sysctl_check_bin_path(struct ctl_table *table, const char **fail)
(strcmp(table->procname, ref->procname) != 0)))
set_fail(fail, table, "procname does not match binary path procname");
- if (ref->ctl_name &&
- (!table->ctl_name || table->ctl_name != ref->ctl_name))
+ if (ref->ctl_name && table->ctl_name &&
+ (table->ctl_name != ref->ctl_name))
set_fail(fail, table, "ctl_name does not match binary path ctl_name");
}
}
@@ -1500,7 +1504,7 @@ int sysctl_check_table(struct ctl_table *table)
if (table->extra2)
set_fail(&fail, table, "Directory with extra2");
if (sysctl_check_dir(table))
- set_fail(&fail, table, "Inconsistent directory");
+ set_fail(&fail, table, "Inconsistent directory names");
} else {
if ((table->strategy == sysctl_data) ||
(table->strategy == sysctl_string) ||
@@ -1521,23 +1525,27 @@ int sysctl_check_table(struct ctl_table *table)
if (!table->maxlen)
set_fail(&fail, table, "No maxlen");
}
- if ((table->strategy == sysctl_intvec) ||
- (table->proc_handler == proc_dointvec_minmax) ||
- (table->proc_handler == proc_doulongvec_minmax) ||
+ if ((table->proc_handler == proc_doulongvec_minmax) ||
(table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) {
- if (!table->extra1)
- set_fail(&fail, table, "No min");
- if (!table->extra2)
- set_fail(&fail, table, "No max");
+ if (table->maxlen > sizeof (unsigned long)) {
+ if (!table->extra1)
+ set_fail(&fail, table, "No min");
+ if (!table->extra2)
+ set_fail(&fail, table, "No max");
+ }
}
+#ifdef CONFIG_SYSCTL_SYSCALL
if (table->ctl_name && !table->strategy)
set_fail(&fail, table, "Missing strategy");
+#endif
#if 0
if (!table->ctl_name && table->strategy)
set_fail(&fail, table, "Strategy without ctl_name");
#endif
+#ifdef CONFIG_PROC_FS
if (table->procname && !table->proc_handler)
set_fail(&fail, table, "No proc_handler");
+#endif
#if 0
if (!table->procname && table->proc_handler)
set_fail(&fail, table, "proc_handler without procname");