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authorThomas Bushnell <thomas@gnu.org>1999-04-26 05:58:44 +0000
committerThomas Bushnell <thomas@gnu.org>1999-04-26 05:58:44 +0000
commit86297c41a26f18d924e64fc93321c59cbc4c48dd (patch)
tree376954c6b95b735d361875319a1a2a9db6a27527 /linux/src/drivers/scsi/sd_ioctl.c
parent851137902d3e7ad87af177487df3eea53e940a1c (diff)
1998-11-30 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>
Clean up linux emulation code to make it architecture-independent as much as possible. * linux: Renamed from linuxdev. * Makefile.in (objfiles): Add linux.o instead of linuxdev.o. (MAKE): New variable. Used for the linux.o target. * configure.in: Add AC_CHECK_TOOL(MAKE, make). * i386/i386/spl.h: Include <i386/ipl.h>, for compatibility with OSF Mach 3.0. Suggested by Elgin Lee <ehl@funghi.com>. * linux/src: Renamed from linux/linux. * linux/dev: Renamed from linux/mach. * linux/Drivers.in (AC_INIT): Use dev/include/linux/autoconf.h, instead of mach/include/linux/autoconf.h. * Makefile.in (all): Target ../linux.o instead of ../linuxdev.o. * linux/dev/drivers/block/genhd.c: Include <machine/spl.h> instead of <i386/ipl.h>. * linux/dev/drivers/net/auto_irq.c: Remove unneeded header files, <i386/ipl.h> and <i386/pic.h>. * linux/dev/init/main.c: Many i386-dependent codes moved to ... * linux/dev/arch/i386/irq.c: ... here. * linux/dev/arch/i386/setup.c: New file. * linux/dev/arch/i386/linux_emul.h: Likewise. * linux/dev/arch/i386/glue/timer.c: Merged into sched.c. * linux/dev/arch/i386/glue/sched.c: Include <machine/spl.h> instead of <i386/ipl.h>, and moved to ... * linux/dev/kernel/sched.c: ... here. * linux/dev/arch/i386/glue/block.c: Include <machine/spl.h> and <linux_emul.h>, instead of i386-dependent header files, and moved to ... * linux/dev/glue/blocl.c: ... here. * linux/dev/arch/i386/glue/net.c: Include <machine/spl.h> and <linux_emul.h>, instead of i386-dependent header files, and moved to ... * linux/dev/glue/net.c: ... here. * linux/dev/arch/i386/glue/misc.c: Remove `x86' and moved to ... * linux/dev/glue/misc.c: ... here. * linux/dev/arch/i386/glue/kmem.c: Moved to ... * linux/dev/glue/kmem.c: ... here.
Diffstat (limited to 'linux/src/drivers/scsi/sd_ioctl.c')
-rw-r--r--linux/src/drivers/scsi/sd_ioctl.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/linux/src/drivers/scsi/sd_ioctl.c b/linux/src/drivers/scsi/sd_ioctl.c
new file mode 100644
index 0000000..52fd754
--- /dev/null
+++ b/linux/src/drivers/scsi/sd_ioctl.c
@@ -0,0 +1,119 @@
+/*
+ * drivers/scsi/sd_ioctl.c
+ *
+ * ioctl handling for SCSI disks
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/hdreg.h>
+#include <linux/errno.h>
+
+#include <asm/segment.h>
+
+#include <linux/blk.h>
+#include "scsi.h"
+#include <scsi/scsi_ioctl.h>
+#include "hosts.h"
+#include "sd.h"
+#include <scsi/scsicam.h> /* must follow "hosts.h" */
+
+int sd_ioctl(struct inode * inode, struct file * file, unsigned int cmd, unsigned long arg)
+{
+ kdev_t dev = inode->i_rdev;
+ int error;
+ struct Scsi_Host * host;
+ int diskinfo[4];
+ struct hd_geometry *loc = (struct hd_geometry *) arg;
+
+ switch (cmd) {
+ case HDIO_GETGEO: /* Return BIOS disk parameters */
+ if (!loc) return -EINVAL;
+ error = verify_area(VERIFY_WRITE, loc, sizeof(*loc));
+ if (error)
+ return error;
+ host = rscsi_disks[MINOR(dev) >> 4].device->host;
+
+/* default to most commonly used values */
+
+ diskinfo[0] = 0x40;
+ diskinfo[1] = 0x20;
+ diskinfo[2] = rscsi_disks[MINOR(dev) >> 4].capacity >> 11;
+
+/* override with calculated, extended default, or driver values */
+
+ if(host->hostt->bios_param != NULL)
+ host->hostt->bios_param(&rscsi_disks[MINOR(dev) >> 4],
+ dev,
+ &diskinfo[0]);
+ else scsicam_bios_param(&rscsi_disks[MINOR(dev) >> 4],
+ dev, &diskinfo[0]);
+
+ put_user(diskinfo[0], &loc->heads);
+ put_user(diskinfo[1], &loc->sectors);
+ put_user(diskinfo[2], &loc->cylinders);
+ put_user(sd[MINOR(inode->i_rdev)].start_sect, &loc->start);
+ return 0;
+ case BLKGETSIZE: /* Return device size */
+ if (!arg) return -EINVAL;
+ error = verify_area(VERIFY_WRITE, (long *) arg, sizeof(long));
+ if (error)
+ return error;
+ put_user(sd[MINOR(inode->i_rdev)].nr_sects,
+ (long *) arg);
+ return 0;
+
+ case BLKRASET:
+ if (!suser())
+ return -EACCES;
+ if(!(inode->i_rdev)) return -EINVAL;
+ if(arg > 0xff) return -EINVAL;
+ read_ahead[MAJOR(inode->i_rdev)] = arg;
+ return 0;
+
+ case BLKRAGET:
+ if (!arg)
+ return -EINVAL;
+ error = verify_area(VERIFY_WRITE, (int *) arg, sizeof(int));
+ if (error)
+ return error;
+ put_user(read_ahead[MAJOR(inode->i_rdev)], (int *) arg);
+ return 0;
+
+ case BLKFLSBUF:
+ if(!suser()) return -EACCES;
+ if(!(inode->i_rdev)) return -EINVAL;
+ fsync_dev(inode->i_rdev);
+ invalidate_buffers(inode->i_rdev);
+ return 0;
+
+ case BLKRRPART: /* Re-read partition tables */
+ return revalidate_scsidisk(dev, 1);
+
+ RO_IOCTLS(dev, arg);
+
+ default:
+ return scsi_ioctl(rscsi_disks[MINOR(dev) >> 4].device , cmd, (void *) arg);
+ }
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only. This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-indent-level: 4
+ * c-brace-imaginary-offset: 0
+ * c-brace-offset: -4
+ * c-argdecl-indent: 4
+ * c-label-offset: -4
+ * c-continued-statement-offset: 4
+ * c-continued-brace-offset: 0
+ * indent-tabs-mode: nil
+ * tab-width: 8
+ * End:
+ */