linux下读取磁盘设备号以其序列号信息

#include <sys/ioctl.h> #include <stdio.h> #include <stdlib.h> #include <errno.h> #include <scsi/sg.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <memory.h> void show_vendor(struct sg_io_hdr * hdr) { unsigned char * buffer = hdr->dxferp; int i; printf("vendor id:"); for (i=8; i<16; ++i) { putchar(buffer[i]); } putchar('\n'); } void show_product(struct sg_io_hdr * hdr) { unsigned char * buffer = hdr->dxferp; int i; printf("product id:"); for (i=16; i<32; ++i) { putchar(buffer[i]); } putchar('\n'); } void show_product_rev(struct sg_io_hdr * hdr) { unsigned char * buffer = hdr->dxferp; int i; printf("product ver:"); for (i=32; i<36; ++i) { putchar(buffer[i]); } putchar('\n'); } int main() { struct sg_io_hdr io_hdr; unsigned char cdb[6]; unsigned char sense[32]; unsigned char buff[65535]; int dev_fd; int errno; char pathname[20]="/dev/sda"; dev_fd= open(pathname, O_RDWR | O_NONBLOCK); if (dev_fd < 0 && errno == EROFS) dev_fd = open(pathname, O_RDONLY | O_NONBLOCK); if (dev_fd<0) { printf("open device error"); return 0; } cdb[0]=0x12; cdb[4]=36; memset(&io_hdr,0,sizeof(struct sg_io_hdr)); io_hdr.interface_id='S'; io_hdr.cmd_len=sizeof(cdb); io_hdr.mx_sb_len=sizeof(sense); io_hdr.dxfer_len=64; io_hdr.dxferp=buff; io_hdr.cmdp=cdb; io_hdr.sbp=sense; io_hdr.timeout=60; io_hdr.dxfer_direction=SG_DXFER_FROM_DEV; if(ioctl(dev_fd,SG_IO,&io_hdr)<0){ printf("ioctl error!\n"); return 0; } char* p=(char*)io_hdr.dxferp; int i; for(i=0;i<io_hdr.dxfer_len;i++){ putchar(*(p+i)); } show_vendor(&io_hdr); show_product(&io_hdr); show_product_rev(&io_hdr); }