0002-Add-.volume_id-static-file-to-store-ISO-volume-name.patch

From 30e3ef757e2aa85d0dbe4234601b84c13b3f8ee6 Mon Sep 17 00:00:00 2001
From: Nodedog
Date: Sun, 30 May 2010 17:39:48 +0100
Subject: [PATCH 2/2] Add .volume_id static file to store ISO volume name

If the ISO volume name is present it will be stored in .volume_id in the root of the fs. Otherwise the file will not be created.
---
 dvdreadfs.c |   43 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/dvdreadfs.c b/dvdreadfs.c
index 7f242d2..159b33f 100644
--- a/dvdreadfs.c
+++ b/dvdreadfs.c
@@ -38,6 +38,7 @@ const off_t   part_size   = (1024*1024*1024) - DVD_VIDEO_LB_LEN;
 #define IS_VOB(d) ((d) == DVD_READ_TITLE_VOBS || (d) == DVD_READ_MENU_VOBS)
 #define IS_IFO(d) (!IS_VOB(d))
 #define READ_AHEAD (1024*1024)*2
+#define VOL_ID_SIZE 1024

 struct file_info {
    dvd_file_t  *fd;
@@ -58,6 +59,8 @@ struct mount_info {
    struct file_info    file[MAX_DOMAIN+1][MAX_TITLE+1];
         const char              *dvdpath;
    int         num_open;
+   struct file_info    vol_id_info;
+   char        vol_id[VOL_ID_SIZE+1];
 };

 /* Eventually make this "per-mount" instead of global */
@@ -160,6 +163,18 @@ static inline int open_dvd(struct mount_info *mi) {

     fprintf(stderr, "Dvdopen(%s) worked\n", mi->dvdpath);

+   memset(mi->vol_id,0,VOL_ID_SIZE+1);
+   mi->vol_id_info.fd=0;
+   if (DVDISOVolumeInfo(mi->dvd, mi->vol_id, VOL_ID_SIZE, NULL,
+                         0) > -1) {
+       mi->vol_id_info.len=strlen(mi->vol_id);
+       fprintf(stderr, "Dvdopen(%s) : Volume id (%s)\n", mi->dvdpath, mi->vol_id);
+   }
+   else {
+       mi->vol_id_info.len=0;
+       fprintf(stderr, "Dvdopen(%s) : Unable to get volume id\n", mi->dvdpath);
+   }
+
     /* Open all the files and determine number of titles. */
     done = 0;
     for (title = 0; !done && title <= MAX_TITLE; ++title) {
@@ -277,6 +292,11 @@ static int fs_getattr(const char *name, struct stat *stbuf)
        stbuf->st_nlink = 2;
        stbuf->st_size = 512;
    }
+   else if (strcmp(name , ".volume_id") == 0) {
+       stbuf->st_mode = 0100444;
+       stbuf->st_nlink = 1;
+       stbuf->st_size = mi.vol_id_info.len;
+   }
    else {
        res = -ENOENT;
    }
@@ -313,6 +333,10 @@ static int fs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
     filler(buf, "..", NULL, 0);

     if (strcmp(path, "/") == 0) {
+       /* Dummy file for volume id */
+       if(mi.vol_id_info.len>0) {
+           filler(buf, ".volume_id", NULL ,0);
+       }
         filler(buf, "VIDEO_TS", NULL, 0);
     } else if (strcmp(path, "/VIDEO_TS") == 0) {
         for (title = 0; title <= mi.num_title; ++title) {
@@ -387,6 +411,25 @@ static int fs_open(const char *name, struct fuse_file_info *fi)
    }
    return 0;
     }
+   else {
+       while (*name == '/')
+           ++name;
+       if (strcmp(name , ".volume_id") == 0) {
+           fi->fh = xfi;
+
+           xfi->cache = NULL;
+           xfi->cache_len = 0;
+           xfi->cache_off = 0;
+
+           if(xfi->cache = malloc(VOL_ID_SIZE+1)) {
+               xfi->fi=&mi.vol_id_info;
+               xfi->fi->fd=-1; //read will not work unless fd is set
+               memcpy(xfi->cache,mi.vol_id,VOL_ID_SIZE+1);
+               fprintf(stderr,"%s\n",xfi->cache);
+               return 0;
+           }
+       }
+   }

     /* Failed so release our reference to dvd */
     dec_refcnt(&mi);
--
1.6.4.4