compat: generic compat get/settimeofday

[linux-2.6-omap-h63xx.git] / kernel / sysctl.c

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index cfc5295f1e82bc10b86b6ec6fc861b9fe4bd5ec1..ec88fcc9a0d2677ab21bd36bf38dc07da6baf0e1 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -149,7 +149,7 @@ extern int max_lock_depth;
 #ifdef CONFIG_PROC_SYSCTL
 static int proc_do_cad_pid(struct ctl_table *table, int write, struct file *filp,
                  void __user *buffer, size_t *lenp, loff_t *ppos);
-static int proc_dointvec_taint(struct ctl_table *table, int write, struct file *filp,
+static int proc_taint(struct ctl_table *table, int write, struct file *filp,
                               void __user *buffer, size_t *lenp, loff_t *ppos);
 #endif
 
@@ -379,10 +379,9 @@ static struct ctl_table kern_table[] = {
 #ifdef CONFIG_PROC_SYSCTL
        {
                .procname       = "tainted",
-               .data           = &tainted,
-               .maxlen         = sizeof(int),
+               .maxlen         = sizeof(long),
                .mode           = 0644,
-               .proc_handler   = &proc_dointvec_taint,
+               .proc_handler   = &proc_taint,
        },
 #endif
 #ifdef CONFIG_LATENCYTOP
@@ -2228,49 +2227,39 @@ int proc_dointvec(struct ctl_table *table, int write, struct file *filp,
                            NULL,NULL);
 }
 
-#define OP_SET 0
-#define OP_AND 1
-#define OP_OR  2
-
-static int do_proc_dointvec_bset_conv(int *negp, unsigned long *lvalp,
-                                     int *valp,
-                                     int write, void *data)
-{
-       int op = *(int *)data;
-       if (write) {
-               int val = *negp ? -*lvalp : *lvalp;
-               switch(op) {
-               case OP_SET:    *valp = val; break;
-               case OP_AND:    *valp &= val; break;
-               case OP_OR:     *valp |= val; break;
-               }
-       } else {
-               int val = *valp;
-               if (val < 0) {
-                       *negp = -1;
-                       *lvalp = (unsigned long)-val;
-               } else {
-                       *negp = 0;
-                       *lvalp = (unsigned long)val;
-               }
-       }
-       return 0;
-}
-
 /*
- *     Taint values can only be increased
+ * Taint values can only be increased
+ * This means we can safely use a temporary.
  */
-static int proc_dointvec_taint(struct ctl_table *table, int write, struct file *filp,
+static int proc_taint(struct ctl_table *table, int write, struct file *filp,
                               void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-       int op;
+       struct ctl_table t;
+       unsigned long tmptaint = get_taint();
+       int err;
 
        if (write && !capable(CAP_SYS_ADMIN))
                return -EPERM;
 
-       op = OP_OR;
-       return do_proc_dointvec(table,write,filp,buffer,lenp,ppos,
-                               do_proc_dointvec_bset_conv,&op);
+       t = *table;
+       t.data = &tmptaint;
+       err = proc_doulongvec_minmax(&t, write, filp, buffer, lenp, ppos);
+       if (err < 0)
+               return err;
+
+       if (write) {
+               /*
+                * Poor man's atomic or. Not worth adding a primitive
+                * to everyone's atomic.h for this
+                */
+               int i;
+               for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) {
+                       if ((tmptaint >> i) & 1)
+                               add_taint(i);
+               }
+       }
+
+       return err;
 }
 
 struct do_proc_dointvec_minmax_conv_param {