Linux下C语言来检测USB设备以及自动区分U盘和硬盘并自动挂载
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 | /************************************************************************* > File Name: test.c > Author: lizhu > Mail: 1489306911@qq.com > Created Time: 2015年11月28日 星期六 11时05分05秒 ************************************************************************/ #include<stdio.h> #include<unistd.h> #include<string.h> #include<stdlib.h> #define DEVTYPE_DISK 2 #define DEVTYPE_U 3 //外部设备的子结构 typedef struct tagDevParam_T { unsigned char devname[12]; unsigned char devtype; ///2----硬盘,3----U盘 unsigned char partition_count; unsigned int dev_totalspace; //KB unsigned int partition_size[12]; /*分区大小,单位KB*/ } tagDevParam_t, *ptagDevParam_t; typedef struct tagDevinfo_T { tagDevParam_t dev[8]; int devcount; /*总共的设备数量*/ int disk_num; } tagDevinfo_t, *ptagDevinfo_t; int DvrCpFile( char *srcFile, char *targetFile, int findString, char *string) { int ret = 0; FILE *srcfp = NULL; FILE *targetfp = NULL; int length = 0; ssize_t size; size_t len = 0; char *p = NULL; char *line = NULL; if (access(srcFile, F_OK) != 0) { printf ( "ERROR: src file is not exist!" ); return -1; } if (ret == 0) { srcfp = fopen (srcFile, "r" ); targetfp = fopen (targetFile, "w+" ); if ((targetfp != NULL) && (srcfp != NULL)) { while ((size = getline(&line, &len, srcfp)) != -1) { if (size > 0) { if (findString == 1) { p = strstr (line, string); if (p != NULL) { length = fwrite (line, size, 1, targetfp); } } else { length = fwrite (line, size, 1, targetfp); } } } fclose (srcfp); fclose (targetfp); if (line) { free (line); } ret = 0; } else { if (srcfp) { printf ( "ERROR: open flie %s" , targetFile); fclose (srcfp); } if (targetfp) { printf ( "ERROR: open flie %s" , srcFile); fclose (targetfp); } ret = -1; } } return ret; } int CheckIsDiskOrUsbDisk(unsigned char *devname) { FILE *fp; int ret = -1; char buffer[80], * line = NULL; ssize_t size; size_t len = 0; int fal=0; memset (buffer, 0, 80); char tmpfilename[64]; if ( tmpnam (tmpfilename) == NULL) { sprintf (tmpfilename, "%s" , "/tmp/check_dev_type.txt" ); } fp = fopen (tmpfilename, "w+" ); sprintf (buffer, "/sys/block/%s/removable" , devname); DvrCpFile(buffer, tmpfilename, fal, NULL); size = getline(&line, &len, fp); fclose (fp); ret = atoi (line); switch (ret) { case 0: ret = DEVTYPE_DISK; break ; case 1: ret = DEVTYPE_U; break ; default : ret = -1; break ; } if (line) { free (line); } remove (tmpfilename); return ret; } int main(){ int xx=1,i=0,dev_tpye; ssize_t size; size_t len = 0; unsigned char k; tagDevinfo_t devinfo; char tmp_devname[12]; char *line = NULL; char *pname; char *token; char seps[] = " " ; FILE *fp = NULL; bzero(tmp_devname, 12); bzero(&devinfo, sizeof (devinfo)); DvrCpFile( "/proc/partitions" , "/tmp/partitions.txt" , xx, "sd" ); fp = fopen ( "/tmp/partitions.txt" , "r" ); /*获得系统 硬盘 和移动设备总结构*/ while ((size = getline(&line, &len, fp)) != -1) { pname = strrchr (line, ' ' ); if (pname == NULL) continue ; pname++; if ( memcmp (pname, tmp_devname, 3) == 0) //新分区 { i = 0; token = strtok (line, seps); while (token != NULL) { if (i == 2) { k=devinfo.dev[devinfo.devcount-1].partition_count; devinfo.dev[devinfo.devcount-1].partition_size[k]= atoi (token); } i++; token = strtok (NULL, seps); } devinfo.dev[devinfo.devcount-1].partition_count++; } else //新设备 { memcpy (devinfo.dev[devinfo.devcount].devname, pname, 3); i = 0; token = strtok (line, seps); while (token != NULL) { if (i == 2) { devinfo.dev[devinfo.devcount].dev_totalspace = atoi (token); } i++; token = strtok (NULL, seps); } devinfo.devcount++; } memcpy (tmp_devname, pname, 3); } printf ( "dve count =%d\n" ,devinfo.devcount); for (i = 0; i < devinfo.devcount; i++){ printf ( "dev name=%s\n" ,devinfo.dev[i].devname); dev_tpye = CheckIsDiskOrUsbDisk(devinfo.dev[i].devname); devinfo.dev[i].devtype = dev_tpye; if (devinfo.dev[i].devtype == DEVTYPE_U) { printf ( "this is USB drive" ); } if (devinfo.dev[i].devtype == DEVTYPE_DISK) { printf ( "this is hard drive" ); } } return 0; } |
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