| 1 | #include <stdio.h>
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| 2 |
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| 3 | /*
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| 4 | * sudo apt-get install libudev-dev
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| 5 | * cc -ludev -o udev udev.c
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| 6 | */
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| 7 |
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| 8 | /* Next line required at least in mythubuntu 9.04 */
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| 9 | #define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE
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| 10 | #include <libudev.h>
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| 11 |
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| 12 | main()
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| 13 | {
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| 14 | udevTest("/sys/block/sda");
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| 15 | udevTest("/sys/block/sdb");
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| 16 | udevTest("/sys/block/sdc");
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| 17 | udevTest("/sys/block/sr0");
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| 18 | udevTest("/sys/block/sdfoo");
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| 19 | return(0);
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| 20 | }
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| 21 |
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| 22 | udevTest(char *sysPath)
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| 23 | {
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| 24 | const char *devPath;
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| 25 |
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| 26 | struct udev_device *udev_device;
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| 27 | struct udev *udev;
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| 28 |
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| 29 | udev = udev_new();
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| 30 |
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| 31 | if(udev == NULL)
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| 32 | {
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| 33 | printf("udev_new() failed, no access to udev system?\n");
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| 34 | return(1);
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| 35 | }
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| 36 |
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| 37 | udev_device = udev_device_new_from_syspath(udev, sysPath);
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| 38 |
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| 39 | if (udev_device == NULL)
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| 40 | {
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| 41 | printf("udev_device_new_from_syspath(%s) failed\n", sysPath);
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| 42 | return(2);
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| 43 | }
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| 44 |
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| 45 | devPath = udev_device_get_devnode(udev_device);
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| 46 |
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| 47 | udev_unref(udev);
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| 48 |
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| 49 | if (devPath == NULL)
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| 50 | {
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| 51 | printf("udev_device_get_devnode() failed\n");
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| 52 | return(3);
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| 53 | }
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| 54 |
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| 55 | printf("%s is known as %s\n", sysPath, devPath);
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| 56 |
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| 57 | return(0);
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| 58 | }
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