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authorMichael Vogt <michael.vogt@ubuntu.com>2009-07-09 17:16:05 +0200
committerMichael Vogt <michael.vogt@ubuntu.com>2009-07-09 17:16:05 +0200
commitcbc9bed8ae85af36ad8579476ab91e89c3cd310e (patch)
tree2a070c03426a8d110428a41388b090bd4b339427 /apt-pkg
parent8e372e79de1277f3508c20c2eb486165402e5afc (diff)
move libudev based code into libapt cdrom.cc class
Diffstat (limited to 'apt-pkg')
-rw-r--r--apt-pkg/cdrom.cc81
-rw-r--r--apt-pkg/cdrom.h36
-rw-r--r--apt-pkg/makefile2
3 files changed, 117 insertions, 2 deletions
diff --git a/apt-pkg/cdrom.cc b/apt-pkg/cdrom.cc
index a31602dfa..087ee321c 100644
--- a/apt-pkg/cdrom.cc
+++ b/apt-pkg/cdrom.cc
@@ -16,7 +16,7 @@
#include <unistd.h>
#include <stdio.h>
#include <algorithm>
-
+#include <dlfcn.h>
#include "indexcopy.h"
@@ -844,3 +844,82 @@ bool pkgCdrom::Add(pkgCdromStatus *log)
return true;
}
+
+
+pkgUdevCdromDevices::pkgUdevCdromDevices()
+ : libudev_handle(NULL)
+{
+
+}
+
+bool
+pkgUdevCdromDevices::Dlopen()
+{
+ // see if we can get libudev
+ void *h = ::dlopen("libudev.so.0", RTLD_LAZY);
+ if(h == NULL)
+ return false;
+
+ // get the pointers to the udev structs
+ 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_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");
+ udev_enumerate_get_udev = (udev* (*)(udev_enumerate*))dlsym(h, "udev_enumerate_get_udev");
+ udev_list_entry_get_name = (const char* (*)(udev_list_entry*))dlsym(h, "udev_list_entry_get_name");
+ udev_device_get_devnode = (const char* (*)(udev_device*))dlsym(h, "udev_device_get_devnode");
+ udev_enumerate_new = (udev_enumerate* (*)(udev*))dlsym(h, "udev_enumerate_new");
+ udev_list_entry_get_next = (udev_list_entry* (*)(udev_list_entry*))dlsym(h, "udev_list_entry_get_next");
+ udev_device_get_property_value = (const char* (*)(udev_device *, const char *))dlsym(h, "udev_device_get_property_value");
+
+ return true;
+}
+
+vector<CdromDevice>
+pkgUdevCdromDevices::Scan()
+{
+ vector<CdromDevice> cdrom_devices;
+ struct udev_enumerate *enumerate;
+ struct udev_list_entry *l, *devices;
+ struct udev *udev_ctx;
+
+ if(libudev_handle == NULL)
+ return cdrom_devices;
+
+ udev_ctx = udev_new();
+ enumerate = udev_enumerate_new (udev_ctx);
+ udev_enumerate_add_match_property(enumerate, "ID_CDROM", "1");
+
+ udev_enumerate_scan_devices (enumerate);
+ devices = udev_enumerate_get_list_entry (enumerate);
+ for (l = devices; l != NULL; l = udev_list_entry_get_next (l))
+ {
+ CdromDevice cdrom;
+ struct udev_device *udevice;
+ udevice = udev_device_new_from_syspath (udev_enumerate_get_udev (enumerate), udev_list_entry_get_name (l));
+ if (udevice == NULL)
+ continue;
+ const char* devnode = udev_device_get_devnode(udevice);
+ const char* mountpath = udev_device_get_property_value(udevice, "FSTAB_DIR");
+
+ // fill in the struct
+ cdrom.DeviceName = string(devnode);
+ if (mountpath) {
+ cdrom.MountPath = mountpath;
+ cdrom.Mounted = true;
+ } else {
+ cdrom.Mounted = false;
+ cdrom.MountPath = "";
+ }
+ cdrom_devices.push_back(cdrom);
+ }
+ return cdrom_devices;
+}
+
+
+pkgUdevCdromDevices::~pkgUdevCdromDevices()
+{
+ dlclose(libudev_handle);
+}
diff --git a/apt-pkg/cdrom.h b/apt-pkg/cdrom.h
index 68d61c098..13e7203f4 100644
--- a/apt-pkg/cdrom.h
+++ b/apt-pkg/cdrom.h
@@ -67,5 +67,41 @@ class pkgCdrom
};
+// class that uses libudev to find cdrom devices dynamically
+struct CdromDevice
+{
+ string DeviceName;
+ bool Mounted;
+ string MountPath;
+};
+
+class pkgUdevCdromDevices
+{
+ protected:
+ // libudev dlopen stucture
+ void *libudev_handle;
+ struct udev* (*udev_new)(void);
+ int (*udev_enumerate_add_match_property)(struct udev_enumerate *udev_enumerate, const char *property, const char *value);
+ int (*udev_enumerate_scan_devices)(struct udev_enumerate *udev_enumerate);
+ struct udev_list_entry* (*udev_enumerate_get_list_entry)(struct udev_enumerate *udev_enumerate);
+ struct udev_device* (*udev_device_new_from_syspath)(struct udev *udev, const char *syspath);
+ struct udev* (*udev_enumerate_get_udev)(struct udev_enumerate *udev_enumerate);
+ const char* (*udev_list_entry_get_name)(struct udev_list_entry *list_entry);
+ const char* (*udev_device_get_devnode)(struct udev_device *udev_device);
+ 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);
+ // end libudev dlopen
+
+ public:
+ pkgUdevCdromDevices();
+ virtual ~pkgUdevCdromDevices();
+
+ // try to open
+ bool Dlopen();
+ vector<CdromDevice> Scan();
+};
+
+
#endif
diff --git a/apt-pkg/makefile b/apt-pkg/makefile
index 087f17740..387151baf 100644
--- a/apt-pkg/makefile
+++ b/apt-pkg/makefile
@@ -15,7 +15,7 @@ LIBRARY=apt-pkg
LIBEXT=$(GLIBC_VER)$(LIBSTDCPP_VER)
MAJOR=4.7
MINOR=0
-SLIBS=$(PTHREADLIB) $(INTLLIBS) -lutil
+SLIBS=$(PTHREADLIB) $(INTLLIBS) -lutil -ldl
APT_DOMAIN:=libapt-pkg$(MAJOR)
# Source code for the contributed non-core things