vold: Give logwrapper the ability to put jobs into the background sched group.

   Also set disk check/format execution to background.

Signed-off-by: San Mehat <san@google.com>

5 files changed, 26 insertions, 7 deletions

diff --git a/vold/format.c b/vold/format.c
index 3383949f..a1faf7aa 100755
--- a/vold/format.c
+++ b/vold/format.c
@@ -44,7 +44,7 @@ int format_partition(blkdev_t *part, char *type)
         args[3] = "-O android";
         args[4] = devpath;
         args[5] = NULL;
-        rc = logwrap(5, args);
+        rc = logwrap(5, args, 1);
     } else {
         char *args[7];
         args[0] = MKE2FS_PATH;
@@ -54,7 +54,7 @@ int format_partition(blkdev_t *part, char *type)
         args[4] = "-v";
         args[5] = devpath;
         args[6] = NULL;
-        rc = logwrap(6, args);
+        rc = logwrap(6, args, 1);
     }
  
     free(devpath);
diff --git a/vold/logwrapper.c b/vold/logwrapper.c
index 2900f2e2..46f6ed32 100644
--- a/vold/logwrapper.c
+++ b/vold/logwrapper.c
@@ -100,7 +100,7 @@ void child(int argc, char* argv[]) {
     }
 }
 
-int logwrap(int argc, char* argv[], pid_t *childPid)
+int logwrap(int argc, char* argv[], pid_t *childPid, int background)
 {
     pid_t pid;
 
@@ -138,6 +138,25 @@ int logwrap(int argc, char* argv[], pid_t *childPid)
         dup2(child_ptty, 2);
         close(child_ptty);
 
+        if (background) {
+            int fd = open("/dev/cpuctl/bg_non_interactive/tasks", O_WRONLY);
+      
+            if (fd >=0 ) {
+                char text[64];
+
+                sprintf(text, "%d", getpid());
+                if (write(fd, text, strlen(text)) < 0) {
+                    LOG(LOG_WARN, "logwrapper",
+                        "Unable to background process (%s)", strerror(errno));
+                    close(fd);
+                }
+                close(fd);
+            } else {
+                LOG(LOG_WARN, "logwrapper",
+                    "Unable to background process (%s)", strerror(errno));
+            }
+        }
+
         child(argc, argv);
     } else {
         return parent(argv[0], parent_ptty);
diff --git a/vold/logwrapper.h b/vold/logwrapper.h
index 602e24cb..bf28aae3 100644
--- a/vold/logwrapper.h
+++ b/vold/logwrapper.h
@@ -19,5 +19,5 @@
 #define _LOGWRAPPER_H
 
 #include <stdlib.h>
-int logwrap(int argc, char* argv[]);
+int logwrap(int argc, char* argv[], int background);
 #endif
diff --git a/vold/volmgr_ext3.c b/vold/volmgr_ext3.c
index 680be219..fe3b2bb4 100644
--- a/vold/volmgr_ext3.c
+++ b/vold/volmgr_ext3.c
@@ -107,7 +107,7 @@ int ext_check(blkdev_t *dev)
     args[3] = devpath;
     args[4] = NULL;
 
-    int rc = logwrap(4, args);
+    int rc = logwrap(4, args, 1);
 
     if (rc == 0) {
         LOG_VOL("filesystem '%s' had no errors", devpath);
diff --git a/vold/volmgr_vfat.c b/vold/volmgr_vfat.c
index 2b0e1fa1..78332226 100644
--- a/vold/volmgr_vfat.c
+++ b/vold/volmgr_vfat.c
@@ -62,13 +62,13 @@ int vfat_check(blkdev_t *dev)
             args[3] = "-p";
             args[4] = blkdev_get_devpath(dev);
             args[5] = NULL;
-            rc = logwrap(5, args);
+            rc = logwrap(5, args, 1);
             free(args[4]);
         } else {
             args[2] = "-n";
             args[3] = blkdev_get_devpath(dev);
             args[4] = NULL;
-            rc = logwrap(4, args);
+            rc = logwrap(4, args, 1);
             free(args[3]);
         }