usb.rar_Mount!_usb_usb s3c2410

///////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////// //// This procedure let us mount the usb device autoly //// 2008-8-13 //// philip ///////////////////////////////////////////////////////////////////////// #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <string.h> #include <sys/mount.h> #include <unistd.h> #include <pthread.h> #define USB_DISK_MP "/tmp/usbdisk" #define FILE_DEV_CHECK "/proc/scsi/scsi" //用来检测设备数和类型 #define FILE_DISC_PARTS_CHECK "/proc/partitions" //用来检测设备的分区情况 #define FILE_DEV_STATU_TEMPL "/proc/scsi/usb-storage-%d/%d" //用来检测某一设备是否在插入状态 #define FILE_MOUNT_CHECK "/proc/mounts" //用来检测设备是否被mount #define MAX_NAME_LEN 64 #define MAX_PART_NUM 6 //最多允许6个分区 typedef struct s_scsi_usb_dev { int type; /*1 cdrom 2 disk */ int index; /*like host0 host1*/ char file_statu[MAX_NAME_LEN]; /*like "/proc/scsi/usb-storage-%d/%d"*/ char devfile_parts[MAX_PART_NUM][MAX_NAME_LEN]; /*存储每个分区的设备文件*/ char mount_path[MAX_PART_NUM][MAX_NAME_LEN]; /*与上面对应的mount点*/ int part_num; //分区数 struct s_scsi_usb_dev * next_dev; //指向下一个备 } SCSI_USB_DEV; static SCSI_USB_DEV * f_first_dev = NULL; void CLEAR_DEV(void) { SCSI_USB_DEV * cur_dev = f_first_dev; SCSI_USB_DEV * tmp_dev; while (cur_dev) { tmp_dev = cur_dev; cur_dev = cur_dev->next_dev; free(tmp_dev); } f_first_dev = NULL; } int INIT_DEV(SCSI_USB_DEV * dev, int index, char * type) { dev->index = index; sprintf(dev->file_statu, FILE_DEV_STATU_TEMPL, index, index); dev->type = 2; dev->part_num = CHECK_PARTS(dev); return 1; } int CHECK_PARTS(SCSI_USB_DEV * dev) { char buf[1024]; char hoststr[16]; int fd,len; int part_num = 0; char * line; char * delim="\n"; char * strtok_tmp_ptr; char * seek; char * part_blocks; fd = open(FILE_DISC_PARTS_CHECK, O_RDONLY); if( fd > 0 ) { len = read(fd, buf, sizeof(buf)); close(fd); if (len > 0) { sprintf(hoststr,"scsi/host%d", dev->index); line = strtok_r(buf, delim, &strtok_tmp_ptr); while(line) { seek = strstr(line, hoststr); if (seek) { part_blocks = seek - 3; if (strncmp(part_blocks, " 1 ", 3)) {//not extend part sprintf(dev->devfile_parts[part_num],"/dev/%s", seek); sprintf(dev->mount_path[part_num], USB_DISK_MP"/disk%d/part%d",dev->index,part_num); printf("%s\n",dev->mount_path[part_num]); part_num ++; if (part_num == MAX_PART_NUM) { break;//too many parts ignore } } } line = strtok_r(NULL, delim, &strtok_tmp_ptr); } } } else { printf("error ! can't find /proc/partitions files\n"); } return part_num; } int ADD_DEV(SCSI_USB_DEV * dev) { if(f_first_dev) { dev->next_dev = f_first_dev; f_first_dev = dev; } else { f_first_dev = dev; dev->next_dev = NULL; } return 1; } void find_device() { char buf[1024]; int fd; int len; int dev_num = 0; char * seek = NULL; SCSI_USB_DEV * new_dev; CLEAR_DEV(); fd = open(FILE_DEV_CHECK, O_RDONLY); if(fd > 0) { len = read(fd, buf, sizeof(buf)); close(fd); if ( len > 0 ) { seek = buf; while(seek) { seek = strstr(seek, "Host: scsi"); if (seek) { seek += strlen( "Host: scsi"); seek = strstr(seek, "Type:"); if (seek) { seek += strlen("Type:"); while(*seek == ' ') seek++; new_dev = malloc(sizeof(SCSI_USB_DEV)); INIT_DEV(new_dev, dev_num, seek); ADD_DEV(new_dev); dev_num ++; } } }//while printf("dev_num = %d\n", dev_num); } } else{ printf("error ! can't find /proc/scsi/scis file!\n"); } } int check_attach(SCSI_USB_DEV * dev) {//检测设备是否连接 //linux中只要设备被插入过就会记住该设备 //只能通过Attached来判断是否连接 char buf[512]; int fd; int len; char * seek; fd = open(dev->file_statu, O_RDONLY); if( fd > 0 ) { len = read(fd, buf, sizeof(buf)); close(fd); if ( len > 0 ) { seek = strstr(buf, "Attached:"); if (seek) { seek += strlen( "Attached:"); while(*seek == ' ') seek++; return *seek=='Y'; } } } else { perror(dev->file_statu); } return 0; } int do_mount(SCSI_USB_DEV * dev) { int i = 0; char fstype[10]; unsigned long mountflags=0; char mount_data[30]; char tmpdir[50]; if (dev->type == 2) { sprintf(tmpdir, USB_DISK_MP"/disk%d", dev->index); mkdir(tmpdir, 0777); strcpy(fstype, "vfat"); mountflags= 0xc0ed0000; strcpy(mount_data,"codepage=936,iocharset=gb2312"); if (dev->part_num > 1) i ++; /*if disk ignore first part disc*/ for(; i<dev->part_num; i++) /*if disk ignore first part disc*/ { mkdir(dev->mount_path[i], 0777); if (mount(dev->devfile_parts[i], dev->mount_path[i], fstype ,mountflags, mount_data)== 0) { printf("mount %s %s success\n", dev->devfile_parts[i], dev->mount_path[i]); //Do_USB_Disk_Update(dev->mount_path[i]); } else { rmdir(dev->mount_path[i]); printf("mount %s %s failed\n", dev->devfile_parts[i], dev->mount_path[i]); } } } else