Android2.2添加设备节点

我们可以在system/core/init下的device.c中增加driver中用到的设备节点。
    在下面的结构体数组中添加driver用到的设备。

1. static struct perms_ devperms[] = { 
2.     { "/dev/null",          0666,   AID_ROOT,       AID_ROOT,       0 }, 
3.     { "/dev/zero",          0666,   AID_ROOT,       AID_ROOT,       0 }, 
4.     { "/dev/full",          0666,   AID_ROOT,       AID_ROOT,       0 }, 
5.     { "/dev/ptmx",          0666,   AID_ROOT,       AID_ROOT,       0 }, 
6.     { "/dev/tty",           0666,   AID_ROOT,       AID_ROOT,       0 }, 
7.     { "/dev/random",        0666,   AID_ROOT,       AID_ROOT,       0 }, 
8.     { "/dev/urandom",       0666,   AID_ROOT,       AID_ROOT,       0 }, 
9.     { "/dev/ashmem",        0666,   AID_ROOT,       AID_ROOT,       0 }, 
10.     { "/dev/binder",        0666,   AID_ROOT,       AID_ROOT,       0 }, 
11.   
12.          
13.     { "/dev/log/",          0662,   AID_ROOT,       AID_LOG,        1 }, 
14.   
15.      
16.     { "/dev/msm_hw3dc",     0666,   AID_ROOT,       AID_ROOT,       0 }, 
17.   
18.      
19.     { "/dev/kgsl",          0666,   AID_ROOT,       AID_ROOT,       0 }, 
20.   
21.          
22.     { "/dev/diag",          0660,   AID_RADIO,      AID_RADIO,        0 }, 
23.     { "/dev/diag_arm9",     0660,   AID_RADIO,      AID_RADIO,        0 }, 
24.     { "/dev/android_adb",   0660,   AID_ADB,        AID_ADB,        0 }, 
25.     { "/dev/android_adb_enable",   0660,   AID_ADB,        AID_ADB,        0 }, 
26.     { "/dev/ttyMSM0",       0600,   AID_BLUETOOTH,  AID_BLUETOOTH,  0 }, 
27.     { "/dev/ttyHS0",        0600,   AID_BLUETOOTH,  AID_BLUETOOTH,  0 }, 
28.     { "/dev/uinput",        0660,   AID_SYSTEM,     AID_BLUETOOTH,  0 }, 
29.     { "/dev/alarm",         0664,   AID_SYSTEM,     AID_RADIO,      0 }, 
30.     { "/dev/tty0",          0660,   AID_ROOT,       AID_SYSTEM,     0 }, 
31.     { "/dev/graphics/",     0660,   AID_ROOT,       AID_GRAPHICS,   1 }, 
32.     { "/dev/msm_hw3dm",     0660,   AID_SYSTEM,     AID_GRAPHICS,   0 }, 
33.     { "/dev/input/",        0660,   AID_ROOT,       AID_INPUT,      1 }, 
34.     { "/dev/eac",           0660,   AID_ROOT,       AID_AUDIO,      0 }, 
35.     { "/dev/cam",           0660,   AID_ROOT,       AID_CAMERA,     0 }, 
36.     { "/dev/pmem",          0660,   AID_SYSTEM,     AID_GRAPHICS,   0 }, 
37.     { "/dev/pmem_adsp",     0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
38.     { "/dev/pmem_camera",   0660,   AID_SYSTEM,     AID_CAMERA,     1 }, 
39.     { "/dev/oncrpc/",       0660,   AID_ROOT,       AID_SYSTEM,     1 }, 
40.     { "/dev/adsp/",         0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
41.     { "/dev/snd/",          0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
42.     { "/dev/mt9t013",       0660,   AID_SYSTEM,     AID_SYSTEM,     0 }, 
43.     { "/dev/msm_camera/",   0660,   AID_SYSTEM,     AID_SYSTEM,     1 }, 
44.     { "/dev/akm8976_daemon",0640,   AID_COMPASS,    AID_SYSTEM,     0 }, 
45.     { "/dev/akm8976_aot",   0640,   AID_COMPASS,    AID_SYSTEM,     0 }, 
46.     { "/dev/akm8973_daemon",0640,   AID_COMPASS,    AID_SYSTEM,     0 }, 
47.     { "/dev/akm8973_aot",   0640,   AID_COMPASS,    AID_SYSTEM,     0 }, 
48.     { "/dev/bma150",        0640,   AID_COMPASS,    AID_SYSTEM,     0 }, 
49.     { "/dev/cm3602",        0640,   AID_COMPASS,    AID_SYSTEM,     0 }, 
50.     { "/dev/akm8976_pffd",  0640,   AID_COMPASS,    AID_SYSTEM,     0 }, 
51.     { "/dev/lightsensor",   0640,   AID_SYSTEM,     AID_SYSTEM,     0 }, 
52.     { "/dev/msm_pcm_out",   0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
53.     { "/dev/msm_pcm_in",    0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
54.     { "/dev/msm_pcm_ctl",   0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
55.     { "/dev/msm_snd",       0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
56.     { "/dev/msm_mp3",       0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
57.     { "/dev/audience_a1026", 0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
58.     { "/dev/tpa2018d1",     0660,   AID_SYSTEM,     AID_AUDIO,      1 }, 
59.     { "/dev/msm_audpre",    0660,   AID_SYSTEM,     AID_AUDIO,      0 }, 
60.     { "/dev/msm_audio_ctl", 0660,   AID_SYSTEM,     AID_AUDIO,      0 }, 
61.     { "/dev/htc-acoustic",  0660,   AID_SYSTEM,     AID_AUDIO,      0 }, 
62.     { "/dev/vdec",          0660,   AID_SYSTEM,     AID_AUDIO,      0 }, 
63.     { "/dev/q6venc",        0660,   AID_SYSTEM,     AID_AUDIO,      0 }, 
64.     { "/dev/snd/dsp",       0660,   AID_SYSTEM,     AID_AUDIO,      0 }, 
65.     { "/dev/snd/dsp1",      0660,   AID_SYSTEM,     AID_AUDIO,      0 }, 
66.     { "/dev/snd/mixer",     0660,   AID_SYSTEM,     AID_AUDIO,      0 }, 
67.     { "/dev/smd0",          0640,   AID_RADIO,      AID_RADIO,      0 }, 
68.     { "/dev/qemu_trace",    0666,   AID_SYSTEM,     AID_SYSTEM,     0 }, 
69.     { "/dev/qmi",           0640,   AID_RADIO,      AID_RADIO,      0 }, 
70.     { "/dev/qmi0",          0640,   AID_RADIO,      AID_RADIO,      0 }, 
71.     { "/dev/qmi1",          0640,   AID_RADIO,      AID_RADIO,      0 }, 
72.     { "/dev/qmi2",          0640,   AID_RADIO,      AID_RADIO,      0 }, 
73.          
74.     { "/dev/ts0710mux",     0640,   AID_RADIO,      AID_RADIO,      1 }, 
75.     { "/dev/ppp",           0660,   AID_RADIO,      AID_VPN,        0 }, 
76.     { "/dev/tun",           0640,   AID_VPN,        AID_VPN,        0 }, 
77.     { NULL, 0, 0, 0, 0 }, 
78. }; 
    

    struct perms_结构体的定义如下：
    structr perms_ {
         char *name;               
         mode_t perm;              
         unsigned int uid;         
         unsigned short prefix;    
    };