[PATCH] swich attribute open() to simple stat()

Here we switch to a simple stat() to recognize the file creation. This
will make it possible to wait for files, which are unreadable.

I've switched the timout back to 5 seconds cause the our /class/vc errors
seems like a bug in the vc layer not a sysfs delay.

diff --git a/wait_for_sysfs.c b/wait_for_sysfs.c
index 25a3fb4eef9bcf4279a5f07e5c4c4770ca2461ca..72368efac8b7f04c61330e8b03584bc566baf3ed 100644 (file)
--- a/wait_for_sysfs.c
+++ b/wait_for_sysfs.c
@@ -47,7 +47,7 @@ void log_message(int level, const char *format, ...)
 }
 #endif
 
-#define WAIT_MAX_SECONDS               10
+#define WAIT_MAX_SECONDS               5
 #define WAIT_LOOP_PER_SECOND           20
 
 /* wait for specific file to show up, normally the "dev"-file */
@@ -60,7 +60,7 @@ static int wait_for_class_device_attributes(struct sysfs_class_device *class_dev
                { .subsystem = "net",           .file = "ifindex" },
                { .subsystem = "scsi_host",     .file = "unique_id" },
                { .subsystem = "scsi_device",   .file = NULL },
-               { .subsystem = "pcmcia_socket", .file = NULL }, /* all files are unreadable in empty slot :( */
+               { .subsystem = "pcmcia_socket", .file = "card_type" },
                { .subsystem = "usb_host",      .file = NULL },
                { .subsystem = "bluetooth",     .file = "address" },
                { .subsystem = "firmware",      .file = "data" },
@@ -86,11 +86,14 @@ static int wait_for_class_device_attributes(struct sysfs_class_device *class_dev
                        break;
                }
        }
-       dbg("looking at class '%s' for specific file '%s'", class_dev->classname, file);
+
+       dbg("looking at class '%s' for specific file '%s'", class_dev->classname, class_dev->path);
 
        loop = WAIT_MAX_SECONDS * WAIT_LOOP_PER_SECOND;
        while (--loop) {
-               if (sysfs_get_classdev_attr(class_dev, file) != NULL) {
+               struct stat stats;
+
+               if (stat(class_dev->path, &stats) == 0) {
                        dbg("class '%s' specific file '%s' found", class_dev->classname, file);
                        return 0;
                }