cherry pick cdrom mount fixes from lp:~mvo/apt/mvo

4 files changed, 48 insertions, 2 deletions

diff --git a/apt-pkg/cdrom.cc b/apt-pkg/cdrom.cc
index 04ace10a6..1e084bfb5 100644
--- a/apt-pkg/cdrom.cc
+++ b/apt-pkg/cdrom.cc
@@ -854,6 +854,7 @@ pkgUdevCdromDevices::Dlopen()                     		        /*{{{*/
    libudev_handle = h;
    udev_new = (udev* (*)(void)) dlsym(h, "udev_new");
    udev_enumerate_add_match_property = (int (*)(udev_enumerate*, const char*, const char*))dlsym(h, "udev_enumerate_add_match_property");
+   udev_enumerate_add_match_sysattr = (int (*)(udev_enumerate*, const char*, const char*))dlsym(h, "udev_enumerate_add_match_sysattr");
    udev_enumerate_scan_devices = (int (*)(udev_enumerate*))dlsym(h, "udev_enumerate_scan_devices");
    udev_enumerate_get_list_entry = (udev_list_entry* (*)(udev_enumerate*))dlsym(h, "udev_enumerate_get_list_entry");
    udev_device_new_from_syspath = (udev_device* (*)(udev*, const char*))dlsym(h, "udev_device_new_from_syspath");
@@ -881,6 +882,8 @@ pkgUdevCdromDevices::Scan()                                             /*{{{*/
    udev_ctx = udev_new();
    enumerate = udev_enumerate_new (udev_ctx);
    udev_enumerate_add_match_property(enumerate, "ID_CDROM", "1");
+   //FIXME: just use removalble here to include usb etc
+   //udev_enumerate_add_match_sysattr(enumerate, "removable", "1");
 
    udev_enumerate_scan_devices (enumerate);
    devices = udev_enumerate_get_list_entry (enumerate);
@@ -892,11 +895,21 @@ pkgUdevCdromDevices::Scan()                                             /*{{{*/
       if (udevice == NULL)
 	 continue;
       const char* devnode = udev_device_get_devnode(udevice);
-      const char* mountpath = udev_device_get_property_value(udevice, "FSTAB_DIR");
+
+      // try fstab_dir first
+      string mountpath;
+      const char* mp = udev_device_get_property_value(udevice, "FSTAB_DIR");
+      if (mp)
+         mountpath = string(mp);
+      else
+         mountpath = FindMountPointForDevice(devnode);
+
+      if (_config->FindB("Debug::Acquire::cdrom", false))
+         cerr << "found " << devnode << " mounted on " << mountpath << endl;
 
       // fill in the struct
       cdrom.DeviceName = string(devnode);
-      if (mountpath) {
+      if (mountpath != "") {
 	 cdrom.MountPath = mountpath;
 	 string s = string(mountpath);
 	 cdrom.Mounted = IsMounted(s);
diff --git a/apt-pkg/cdrom.h b/apt-pkg/cdrom.h
index 14ca1d810..5f67a3a94 100644
--- a/apt-pkg/cdrom.h
+++ b/apt-pkg/cdrom.h
@@ -92,6 +92,7 @@ class pkgUdevCdromDevices						/*{{{*/
    struct udev_enumerate *(*udev_enumerate_new) (struct udev *udev);
    struct udev_list_entry *(*udev_list_entry_get_next)(struct udev_list_entry *list_entry);
    const char* (*udev_device_get_property_value)(struct udev_device *udev_device, const char *key);
+   int (*udev_enumerate_add_match_sysattr)(struct udev_enumerate *udev_enumerate, const char *property, const char *value);
    // end libudev dlopen
    
  public:
diff --git a/apt-pkg/contrib/cdromutl.cc b/apt-pkg/contrib/cdromutl.cc
index 68b980407..83c324f54 100644
--- a/apt-pkg/contrib/cdromutl.cc
+++ b/apt-pkg/contrib/cdromutl.cc
@@ -15,6 +15,7 @@
 #include <apt-pkg/md5.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/strutl.h>
 
 #include <apti18n.h>
     
@@ -234,3 +235,33 @@ bool IdentCdrom(string CD,string &Res,unsigned int Version)
    return true;   
 }
 									/*}}}*/
+
+// FindMountPointForDevice - Find mountpoint for the given device      /*{{{*/
+string FindMountPointForDevice(const char *devnode)
+{
+   char buf[255];
+   char *out[10];
+   int i=0;
+
+   // this is the order that mount uses as well
+   const char *mount[] = { "/etc/mtab", 
+                           "/proc/mount", 
+                           NULL };
+
+   for (i=0; mount[i] != NULL; i++) {
+      if (FileExists(mount[i])) {
+         FILE *f=fopen(mount[i], "r");
+         while ( fgets(buf, sizeof(buf), f) != NULL) {
+            if (strncmp(buf, devnode, strlen(devnode)) == 0) {
+               if(TokSplitString(' ', buf, out, 10))
+                  return string(out[1]);
+            }
+         }
+         fclose(f);
+      }
+   }
+   
+   return string();
+}
+
+
diff --git a/apt-pkg/contrib/cdromutl.h b/apt-pkg/contrib/cdromutl.h
index 9d14249c5..38ed2996e 100644
--- a/apt-pkg/contrib/cdromutl.h
+++ b/apt-pkg/contrib/cdromutl.h
@@ -19,5 +19,6 @@ bool MountCdrom(string Path, string DeviceName="");
 bool UnmountCdrom(string Path);
 bool IdentCdrom(string CD,string &Res,unsigned int Version = 2);
 bool IsMounted(string &Path);
+string FindMountPointForDevice(const char *device);
 
 #endif