[package] unvram: make it work on bcm47xx, also look for /dev/mtdblockX

[openwrt/svn-archive/archive.git] / package / unvram / src / nvram.c

diff --git a/package/unvram/src/nvram.c b/package/unvram/src/nvram.c
index 4dfe0a95977057642f2678b37359127024bb819f..a5f1d43508984c25d2171b00c571997ea3635da2 100644 (file)
--- a/package/unvram/src/nvram.c
+++ b/package/unvram/src/nvram.c
@@ -409,6 +409,7 @@ const char * nvram_find_mtd(void)
        int i, esz;
        char dev[PATH_MAX];
        char *path = NULL;
+       struct stat s;
 
        // "/dev/mtdblock/" + ( 0 < x < 99 ) + \0 = 19
        if( (path = (char *) malloc(19)) == NULL )
@@ -416,12 +417,30 @@ const char * nvram_find_mtd(void)
 
        if ((fp = fopen("/proc/mtd", "r"))) {
                while (fgets(dev, sizeof(dev), fp)) {
-                       if (strstr(dev, "nvram") && sscanf(dev, "mtd%d: %08x", &i, &esz)) {
-                               if( (path = (char *) malloc(19)) != NULL )
+                       if (strstr(dev, "nvram") && sscanf(dev, "mtd%d: %08x", &i, &esz))
+                       {
+                               nvram_erase_size = esz;
+
+                               sprintf(dev, "/dev/mtdblock/%d", i);
+                               if( stat(dev, &s) > -1 && (s.st_mode & S_IFBLK) )
+                               {
+                                       if( (path = (char *) malloc(strlen(dev)+1)) != NULL )
+                                       {
+                                               strncpy(path, dev, strlen(dev)+1);
+                                               break;
+                                       }
+                               }
+                               else
                                {
-                                       nvram_erase_size = esz;
-                                       snprintf(path, 19, "/dev/mtdblock/%d", i);
-                                       break;
+                                       sprintf(dev, "/dev/mtdblock%d", i);
+                                       if( stat(dev, &s) > -1 && (s.st_mode & S_IFBLK) )
+                                       {
+                                               if( (path = (char *) malloc(strlen(dev)+1)) != NULL )
+                                               {
+                                                       strncpy(path, dev, strlen(dev)+1);
+                                                       break;
+                                               }
+                                       }
                                }
                        }
                }