proc/sysctl: add shared variables for range check

[zynq/linux.git] / ipc / ipc_sysctl.c

diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 2b14ce8ce73fa08f694e166c1ceb98ebeb946d44..affd66537e87550a3fb88c144957506f9140dcd1 100644 (file)
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -113,9 +113,6 @@ static int proc_ipc_sem_dointvec(struct ctl_table *table, int write,
 #define proc_ipc_sem_dointvec     NULL
 #endif
 
-static int zero;
-static int one = 1;
-static int int_max = INT_MAX;
 int ipc_mni = IPCMNI;
 int ipc_mni_shift = IPCMNI_SHIFT;
 int ipc_min_cycle = RADIX_TREE_MAP_SIZE;
@@ -141,7 +138,7 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(init_ipc_ns.shm_ctlmni),
                .mode           = 0644,
                .proc_handler   = proc_ipc_dointvec_minmax,
-               .extra1         = &zero,
+               .extra1         = SYSCTL_ZERO,
                .extra2         = &ipc_mni,
        },
        {
@@ -150,8 +147,8 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(init_ipc_ns.shm_rmid_forced),
                .mode           = 0644,
                .proc_handler   = proc_ipc_dointvec_minmax_orphans,
-               .extra1         = &zero,
-               .extra2         = &one,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_ONE,
        },
        {
                .procname       = "msgmax",
@@ -159,8 +156,8 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(init_ipc_ns.msg_ctlmax),
                .mode           = 0644,
                .proc_handler   = proc_ipc_dointvec_minmax,
-               .extra1         = &zero,
-               .extra2         = &int_max,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_INT_MAX,
        },
        {
                .procname       = "msgmni",
@@ -168,7 +165,7 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(init_ipc_ns.msg_ctlmni),
                .mode           = 0644,
                .proc_handler   = proc_ipc_dointvec_minmax,
-               .extra1         = &zero,
+               .extra1         = SYSCTL_ZERO,
                .extra2         = &ipc_mni,
        },
        {
@@ -177,8 +174,8 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = proc_ipc_auto_msgmni,
-               .extra1         = &zero,
-               .extra2         = &one,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_ONE,
        },
        {
                .procname       =  "msgmnb",
@@ -186,8 +183,8 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(init_ipc_ns.msg_ctlmnb),
                .mode           = 0644,
                .proc_handler   = proc_ipc_dointvec_minmax,
-               .extra1         = &zero,
-               .extra2         = &int_max,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_INT_MAX,
        },
        {
                .procname       = "sem",
@@ -203,8 +200,8 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(init_ipc_ns.ids[IPC_SEM_IDS].next_id),
                .mode           = 0644,
                .proc_handler   = proc_ipc_dointvec_minmax,
-               .extra1         = &zero,
-               .extra2         = &int_max,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_INT_MAX,
        },
        {
                .procname       = "msg_next_id",
@@ -212,8 +209,8 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(init_ipc_ns.ids[IPC_MSG_IDS].next_id),
                .mode           = 0644,
                .proc_handler   = proc_ipc_dointvec_minmax,
-               .extra1         = &zero,
-               .extra2         = &int_max,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_INT_MAX,
        },
        {
                .procname       = "shm_next_id",
@@ -221,8 +218,8 @@ static struct ctl_table ipc_kern_table[] = {
                .maxlen         = sizeof(init_ipc_ns.ids[IPC_SHM_IDS].next_id),
                .mode           = 0644,
                .proc_handler   = proc_ipc_dointvec_minmax,
-               .extra1         = &zero,
-               .extra2         = &int_max,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_INT_MAX,
        },
 #endif
        {}