The patch titled
sysctl: update sysctl_check_table
has been added to the -mm tree. Its filename is
sysctl-update-sysctl_check_table.patch
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See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
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------------------------------------------------------
Subject: sysctl: update sysctl_check_table
From: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
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@xxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sysctl_check.c | 30 ++++++++++++++++--------------
1 file changed, 16 insertions(+), 14 deletions(-)
diff -puN kernel/sysctl_check.c~sysctl-update-sysctl_check_table kernel/sysctl_check.c
--- a/kernel/sysctl_check.c~sysctl-update-sysctl_check_table
+++ a/kernel/sysctl_check.c
@@ -1420,12 +1420,14 @@ static int sysctl_check_dir(struct ctl_t
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) {
@@ -1462,8 +1464,8 @@ static void sysctl_check_bin_path(struct
(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");
}
}
@@ -1499,7 +1501,7 @@ int sysctl_check_table(struct ctl_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) ||
@@ -1520,14 +1522,14 @@ int sysctl_check_table(struct ctl_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");
+ }
}
if (table->ctl_name && !table->strategy)
set_fail(&fail, table, "Missing strategy");
_
Patches currently in -mm which might be from ebiederm@xxxxxxxxxxxx are
remove-unused-struct-proc_dir_entryset.patch
dvb_en_50221-convert-to-kthread-api.patch
x86_64-remove-sync_arb_ids.patch
x86_64-clear-io_apic-before-enabing-apic-error-vector.patch
clone-flag-clone_parent_tidptr-leaves-invalid-results-in-memory.patch
handle-the-multi-threaded-inits-exit-properly.patch
sysctl-core-stop-using-the-unnecessary-ctl_table-typedef.patch
sysctl-factor-out-sysctl_data.patch
sysctl-error-on-bad-sysctl-tables.patch
sysctl-update-sysctl_check_table.patch
sysct-mqueue-remove-the-binary-sysctl-numbers.patch
sysctl-remove-binary-sysctl-support-where-it-clearly-doesnt-work.patch
sysctl-fix-neighbour-table-sysctls.patch
sysctl-ipv6-route-flushing-kill-binary-path.patch
sysctl-remove-broken-sunrpc-debug-binary-sysctls.patch
sysctl-x86_64-remove-unnecessary-binary-paths.patch
sysctl-remove-broken-cdrom-binary-sysctls.patch
sysctl-ipv4-remove-binary-sysctl-paths-where-they-are-broken.patch
sysctl-remove-the-binary-interface-for-aio-nr-aio-max-nr-acpi_video_flags.patch
cpuset-zero-malloc-revert-the-old-cpuset-fix.patch
task-containersv11-basic-task-container-framework.patch
task-containersv11-add-tasks-file-interface.patch
task-containersv11-add-fork-exit-hooks.patch
task-containersv11-add-container_clone-interface.patch
task-containersv11-add-procfs-interface.patch
task-containersv11-shared-container-subsystem-group-arrays.patch
task-containersv11-automatic-userspace-notification-of-idle-containers.patch
task-containersv11-make-cpusets-a-client-of-containers.patch
task-containersv11-example-cpu-accounting-subsystem.patch
task-containersv11-simple-task-container-debug-info-subsystem.patch
pid-namespaces-round-up-the-api.patch
pid-namespaces-make-get_pid_ns-return-the-namespace-itself.patch
pid-namespaces-dynamic-kmem-cache-allocator-for-pid-namespaces.patch
pid-namespaces-dynamic-kmem-cache-allocator-for-pid-namespaces-fix.patch
pid-namespaces-define-and-use-task_active_pid_ns-wrapper.patch
pid-namespaces-rename-child_reaper-function.patch
pid-namespaces-use-task_pid-to-find-leaders-pid.patch
pid-namespaces-define-is_global_init-and-is_container_init.patch
pid-namespaces-move-alloc_pid-to-copy_process.patch
make-access-to-tasks-nsproxy-lighter.patch
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