查看磁盘分区信息的 C 语言源代码.zip_磁盘_磁盘分区

#include <stdio.h> #include <dos.h> #include <bios.h> struct direct { char name[10]; unsigned char mode; char reserved[10]; struct stamp { unsigned int mtime; unsigned int mdate; } stamp; unsigned int first; unsigned long fsize; }; struct param { short int sysid[9]; int bytes_sector; short int sectors_cluster; int sectors_reserved; short int total_fats; unsigned int root_entries; int total_sectors; short int media_descriptor; int sectors_fat; int sectors_track; int number_heads; int hidden_sectors; }; struct param *bbp(); main(argc,argv) int argc; char **argv; { int i, j, retry, strt; unsigned ch, status = 0; char buf[512]; void far *pbuf; struct diskinfo_t info; struct direct *d; struct param *p; memset(buf,'\0', sizeof (buf)); pbuf = (void far *)(&buf[0]); info.buffer = pbuf; info.drive = (argc > 1) ? atoi(argv[1]) : 0; info.head = 0; info.track = 0; info.sector = 1; info.nsectors = 1; for (retry = 0; retry <= 3; retry++) { if ((status = _bios_disk(_DISK_READ, &info)) == info.nsectors) { printf("read OK: sizeof direct=%d\n", sizeof (struct direct)); printf("read OK: sizeof params=%d\n", sizeof (struct param)); /* d = (struct direct *)buf; for (i = 0; i < 10; i++) { printf("[%11.11s] first=%x size=%d\n", d->name, d->first, d->fsize); ++d; } */ p = (struct param *)bbp(pbuf); printf(" sysid=%8.8s\n", p->sysid); printf(" bytes_sector=%d\n", p->bytes_sector); printf(" sectors_cluster=%d\n", p->sectors_cluster); printf("sectors_reserved=%d\n", p->sectors_reserved); printf(" total_fats=%d\n", p->total_fats); printf(" root_entries=%u\n", p->root_entries); printf(" total_sectors=%d\n", p->total_sectors); printf("media_descriptor=%x\n", p->media_descriptor); printf(" sectors_fat=%d\n", p->sectors_fat); printf(" sectors_track=%d\n", p->sectors_track); printf(" number_heads=%d\n", p->number_heads); printf(" hidden_sectors=%d\n", p->hidden_sectors); exit(0); } } } struct param * bbp(p) char far *p; { static struct param d; strncpy(d.sysid,&p[0x3],8); d.bytes_sector = (int )p[0xb]; d.sectors_cluster = (short int )p[0xd]; d.sectors_reserved = (int )p[0xe]; d.total_fats = (short int )p[0x10]; d.root_entries = (unsigned int)p[0x11]; d.total_sectors = (int )p[0x13]; d.media_descriptor = (short int )p[0x15]; d.sectors_fat = (int )p[0x16]; d.sectors_track = (int )p[0x18]; d.number_heads = (int )p[0x1a]; d.hidden_sectors = (int )p[0x1c]; return (&d); }