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58 lines
1.0 KiB
C
58 lines
1.0 KiB
C
static __attribute__((used)) char* rcsid = "$CVSHeader$";
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/*
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*
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* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
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*
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <stdio.h>
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#include "libemile.h"
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/* SCSI disks */
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#define MAJOR_HD 3
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#define MAJOR_SD 8
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static char *scsi_base = "/dev/sd";
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static char *ata_base = "/dev/hd";
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int emile_scsi_get_dev(int fd, char** driver, int *disk, int *partition)
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{
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struct stat st;
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int ret;
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int dev;
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int major;
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int minor;
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ret = fstat(fd, &st);
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if (ret == -1)
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return -1;
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dev = S_ISREG(st.st_mode) ? st.st_dev : st.st_rdev;
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major = (dev >> 8) & 0x0F; /* major number = driver id */
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minor = dev & 0xFF; /* minor number = disk id */
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switch(major)
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{
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case MAJOR_SD: /* SCSI disks */
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*driver = scsi_base;
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*disk = minor >> 4;
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*partition = minor & 0x0F;
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break;
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case MAJOR_HD: /* ATA disks */
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*driver = ata_base;
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*disk = minor >> 6;
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*partition = minor & 0x3F;
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break;
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default:
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fprintf(stderr, "Unknown device major number %d\n", major);
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return -1;
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}
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return 0;
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}
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