c - 如何在 Linux 中以编程方式获取磁盘名称(如 "/dev/sda"或 "/dev/sdb")？

Question

我正在尝试查找与磁盘和分区相关的信息。以下是我的代码。但问题是，我通过命令行从“/proc/partitions”查询磁盘名称来传递磁盘名称。是否有任何 api 也可以给我磁盘名称。

#include <stdio.h>
#include <stdlib.h>
#include <err.h>
#include <blkid/blkid.h>

int main (int argc, char *argv[])
{
 blkid_probe pr;
 blkid_partlist ls;
 int nparts, i;

 pr = blkid_new_probe_from_filename(argv[1]);
 if (!pr)
 err(2, "faild to open device %s", argv[1]);

 ls = blkid_probe_get_partitions(pr);
 nparts = blkid_partlist_numof_partitions(ls);

for (i = 0; i < nparts; i++)
{
blkid_partition par = blkid_partlist_get_partition(ls, i);
printf("PartNo = %d\npart_start = %llu\npart_size =  %llu\npart_type = 0x%x\n",
blkid_partition_get_partno(par),
blkid_partition_get_start(par),
blkid_partition_get_size(par),
blkid_partition_get_type(par));
}

blkid_free_probe(pr);
return 0;

}

Answer 1

我使用的一种方法是从 lshw 中解析信息:

lshw -class disk |grep "logical name"

另一种方法是检查 ls/sys/block/sd*