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First revision
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46
libemile/emile_scsi_get_dev.c
Normal file
46
libemile/emile_scsi_get_dev.c
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@ -0,0 +1,46 @@
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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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#define MAJOR_SD 8 /* SCSI disks */
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int emile_scsi_get_dev(char* dev_name, int fd)
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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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sprintf(dev_name, "/dev/sd%c%d", 'a' + (minor >> 4),
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minor & 0x0F);
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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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35
libemile/emile_scsi_get_rdev.c
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35
libemile/emile_scsi_get_rdev.c
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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 "partition.h"
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#include "libemile.h"
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#define MAJOR_SD 8
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int emile_scsi_get_rdev(char* dev_name, int *disk, int *partition)
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{
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int ret;
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struct stat st;
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int major;
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ret = stat(dev_name, &st);
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if (ret == -1)
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return -1;
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if (!S_ISBLK(st.st_mode))
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/* not a block device */
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return -1;
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major = (st.st_rdev >> 8) & 0x0F;
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if (major != MAJOR_SD)
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return -1;
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*disk = (st.st_rdev & 0xFF) >> 4;
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*partition = st.st_rdev & 0x0F;
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return disk;
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}
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49
tools/emile-set-startup.c
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49
tools/emile-set-startup.c
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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 <stdio.h>
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#include "libemile.h"
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static void usage(int argc, char** argv)
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{
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fprintf(stderr, "Usage: %s <partition>\n", argv[0]);
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fprintf(stderr, "\n Set startup partition\n");
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fprintf(stderr, "\nbuild: \n%s\n", SIGNATURE);
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}
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int main(int argc, char** argv)
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{
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int ret;
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int disk;
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int partition;
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char disk_name[16];
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if (argc != 2)
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{
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usage(argc, argv);
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return 1;
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}
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ret = emile_scsi_get_rdev(argv[1], &disk, &partition);
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if (ret == -1)
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{
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fprintf(stderr, "ERROR: cannot find disk of %s\n", argv[1]);
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return 1;
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}
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sprintf(disk_name, "/dev/sd%c", 'a' + disk);
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printf("Setting startup partition : %s%d\n", disk_name, partition);
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ret = emile_map_set_startup(disk_name, partition - 1);
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if (ret == -1) {
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fprintf(stderr, "ERROR: cannot set startup partition\n");
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return 1;
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}
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return 0;
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}
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