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take floppy compat ioctls to sodding floppy.c
all other drivers recognizing those ioctls are very much *not* biarch. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
@@ -192,6 +192,7 @@ static int print_unex = 1;
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#include <linux/io.h>
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#include <linux/uaccess.h>
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#include <linux/async.h>
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#include <linux/compat.h>
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/*
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* PS/2 floppies have much slower step rates than regular floppies.
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@@ -3568,6 +3569,330 @@ static int fd_ioctl(struct block_device *bdev, fmode_t mode,
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return ret;
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}
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#ifdef CONFIG_COMPAT
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struct compat_floppy_drive_params {
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char cmos;
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compat_ulong_t max_dtr;
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compat_ulong_t hlt;
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compat_ulong_t hut;
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compat_ulong_t srt;
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compat_ulong_t spinup;
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compat_ulong_t spindown;
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unsigned char spindown_offset;
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unsigned char select_delay;
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unsigned char rps;
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unsigned char tracks;
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compat_ulong_t timeout;
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unsigned char interleave_sect;
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struct floppy_max_errors max_errors;
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char flags;
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char read_track;
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short autodetect[8];
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compat_int_t checkfreq;
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compat_int_t native_format;
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};
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struct compat_floppy_drive_struct {
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signed char flags;
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compat_ulong_t spinup_date;
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compat_ulong_t select_date;
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compat_ulong_t first_read_date;
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short probed_format;
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short track;
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short maxblock;
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short maxtrack;
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compat_int_t generation;
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compat_int_t keep_data;
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compat_int_t fd_ref;
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compat_int_t fd_device;
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compat_int_t last_checked;
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compat_caddr_t dmabuf;
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compat_int_t bufblocks;
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};
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struct compat_floppy_fdc_state {
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compat_int_t spec1;
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compat_int_t spec2;
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compat_int_t dtr;
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unsigned char version;
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unsigned char dor;
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compat_ulong_t address;
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unsigned int rawcmd:2;
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unsigned int reset:1;
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unsigned int need_configure:1;
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unsigned int perp_mode:2;
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unsigned int has_fifo:1;
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unsigned int driver_version;
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unsigned char track[4];
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};
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struct compat_floppy_write_errors {
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unsigned int write_errors;
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compat_ulong_t first_error_sector;
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compat_int_t first_error_generation;
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compat_ulong_t last_error_sector;
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compat_int_t last_error_generation;
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compat_uint_t badness;
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};
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#define FDSETPRM32 _IOW(2, 0x42, struct compat_floppy_struct)
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#define FDDEFPRM32 _IOW(2, 0x43, struct compat_floppy_struct)
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#define FDSETDRVPRM32 _IOW(2, 0x90, struct compat_floppy_drive_params)
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#define FDGETDRVPRM32 _IOR(2, 0x11, struct compat_floppy_drive_params)
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#define FDGETDRVSTAT32 _IOR(2, 0x12, struct compat_floppy_drive_struct)
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#define FDPOLLDRVSTAT32 _IOR(2, 0x13, struct compat_floppy_drive_struct)
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#define FDGETFDCSTAT32 _IOR(2, 0x15, struct compat_floppy_fdc_state)
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#define FDWERRORGET32 _IOR(2, 0x17, struct compat_floppy_write_errors)
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static int compat_set_geometry(struct block_device *bdev, fmode_t mode, unsigned int cmd,
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struct compat_floppy_struct __user *arg)
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{
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struct floppy_struct v;
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int drive, type;
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int err;
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BUILD_BUG_ON(offsetof(struct floppy_struct, name) !=
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offsetof(struct compat_floppy_struct, name));
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if (!(mode & (FMODE_WRITE | FMODE_WRITE_IOCTL)))
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return -EPERM;
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memset(&v, 0, sizeof(struct floppy_struct));
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if (copy_from_user(&v, arg, offsetof(struct floppy_struct, name)))
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return -EFAULT;
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mutex_lock(&floppy_mutex);
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drive = (long)bdev->bd_disk->private_data;
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type = ITYPE(UDRS->fd_device);
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err = set_geometry(cmd == FDSETPRM32 ? FDSETPRM : FDDEFPRM,
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&v, drive, type, bdev);
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mutex_unlock(&floppy_mutex);
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return err;
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}
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static int compat_get_prm(int drive,
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struct compat_floppy_struct __user *arg)
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{
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struct compat_floppy_struct v;
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struct floppy_struct *p;
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int err;
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memset(&v, 0, sizeof(v));
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mutex_lock(&floppy_mutex);
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err = get_floppy_geometry(drive, ITYPE(UDRS->fd_device), &p);
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if (err) {
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mutex_unlock(&floppy_mutex);
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return err;
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}
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memcpy(&v, p, offsetof(struct floppy_struct, name));
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mutex_unlock(&floppy_mutex);
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if (copy_to_user(arg, &v, sizeof(struct compat_floppy_struct)))
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return -EFAULT;
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return 0;
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}
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static int compat_setdrvprm(int drive,
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struct compat_floppy_drive_params __user *arg)
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{
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struct compat_floppy_drive_params v;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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if (copy_from_user(&v, arg, sizeof(struct compat_floppy_drive_params)))
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return -EFAULT;
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mutex_lock(&floppy_mutex);
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UDP->cmos = v.cmos;
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UDP->max_dtr = v.max_dtr;
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UDP->hlt = v.hlt;
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UDP->hut = v.hut;
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UDP->srt = v.srt;
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UDP->spinup = v.spinup;
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UDP->spindown = v.spindown;
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UDP->spindown_offset = v.spindown_offset;
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UDP->select_delay = v.select_delay;
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UDP->rps = v.rps;
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UDP->tracks = v.tracks;
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UDP->timeout = v.timeout;
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UDP->interleave_sect = v.interleave_sect;
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UDP->max_errors = v.max_errors;
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UDP->flags = v.flags;
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UDP->read_track = v.read_track;
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memcpy(UDP->autodetect, v.autodetect, sizeof(v.autodetect));
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UDP->checkfreq = v.checkfreq;
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UDP->native_format = v.native_format;
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mutex_unlock(&floppy_mutex);
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return 0;
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}
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static int compat_getdrvprm(int drive,
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struct compat_floppy_drive_params __user *arg)
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{
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struct compat_floppy_drive_params v;
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memset(&v, 0, sizeof(struct compat_floppy_drive_params));
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mutex_lock(&floppy_mutex);
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v.cmos = UDP->cmos;
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v.max_dtr = UDP->max_dtr;
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v.hlt = UDP->hlt;
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v.hut = UDP->hut;
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v.srt = UDP->srt;
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v.spinup = UDP->spinup;
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v.spindown = UDP->spindown;
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v.spindown_offset = UDP->spindown_offset;
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v.select_delay = UDP->select_delay;
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v.rps = UDP->rps;
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v.tracks = UDP->tracks;
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v.timeout = UDP->timeout;
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v.interleave_sect = UDP->interleave_sect;
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v.max_errors = UDP->max_errors;
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v.flags = UDP->flags;
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v.read_track = UDP->read_track;
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memcpy(v.autodetect, UDP->autodetect, sizeof(v.autodetect));
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v.checkfreq = UDP->checkfreq;
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v.native_format = UDP->native_format;
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mutex_unlock(&floppy_mutex);
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if (copy_from_user(arg, &v, sizeof(struct compat_floppy_drive_params)))
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return -EFAULT;
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return 0;
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}
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static int compat_getdrvstat(int drive, bool poll,
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struct compat_floppy_drive_struct __user *arg)
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{
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struct compat_floppy_drive_struct v;
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memset(&v, 0, sizeof(struct compat_floppy_drive_struct));
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mutex_lock(&floppy_mutex);
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if (poll) {
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if (lock_fdc(drive))
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goto Eintr;
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if (poll_drive(true, FD_RAW_NEED_DISK) == -EINTR)
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goto Eintr;
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process_fd_request();
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}
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v.spinup_date = UDRS->spinup_date;
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v.select_date = UDRS->select_date;
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v.first_read_date = UDRS->first_read_date;
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v.probed_format = UDRS->probed_format;
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v.track = UDRS->track;
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v.maxblock = UDRS->maxblock;
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v.maxtrack = UDRS->maxtrack;
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v.generation = UDRS->generation;
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v.keep_data = UDRS->keep_data;
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v.fd_ref = UDRS->fd_ref;
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v.fd_device = UDRS->fd_device;
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v.last_checked = UDRS->last_checked;
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v.dmabuf = (uintptr_t)UDRS->dmabuf;
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v.bufblocks = UDRS->bufblocks;
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mutex_unlock(&floppy_mutex);
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if (copy_from_user(arg, &v, sizeof(struct compat_floppy_drive_struct)))
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return -EFAULT;
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return 0;
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Eintr:
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mutex_unlock(&floppy_mutex);
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return -EINTR;
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}
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static int compat_getfdcstat(int drive,
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struct compat_floppy_fdc_state __user *arg)
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{
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struct compat_floppy_fdc_state v32;
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struct floppy_fdc_state v;
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mutex_lock(&floppy_mutex);
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v = *UFDCS;
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mutex_unlock(&floppy_mutex);
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memset(&v32, 0, sizeof(struct compat_floppy_fdc_state));
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v32.spec1 = v.spec1;
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v32.spec2 = v.spec2;
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v32.dtr = v.dtr;
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v32.version = v.version;
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v32.dor = v.dor;
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v32.address = v.address;
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v32.rawcmd = v.rawcmd;
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v32.reset = v.reset;
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v32.need_configure = v.need_configure;
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v32.perp_mode = v.perp_mode;
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v32.has_fifo = v.has_fifo;
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v32.driver_version = v.driver_version;
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memcpy(v32.track, v.track, 4);
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if (copy_to_user(arg, &v32, sizeof(struct compat_floppy_fdc_state)))
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return -EFAULT;
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return 0;
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}
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static int compat_werrorget(int drive,
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struct compat_floppy_write_errors __user *arg)
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{
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struct compat_floppy_write_errors v32;
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struct floppy_write_errors v;
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memset(&v32, 0, sizeof(struct compat_floppy_write_errors));
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mutex_lock(&floppy_mutex);
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v = *UDRWE;
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mutex_unlock(&floppy_mutex);
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v32.write_errors = v.write_errors;
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v32.first_error_sector = v.first_error_sector;
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v32.first_error_generation = v.first_error_generation;
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v32.last_error_sector = v.last_error_sector;
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v32.last_error_generation = v.last_error_generation;
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v32.badness = v.badness;
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if (copy_to_user(arg, &v32, sizeof(struct compat_floppy_write_errors)))
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return -EFAULT;
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return 0;
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}
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static int fd_compat_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
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unsigned long param)
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{
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int drive = (long)bdev->bd_disk->private_data;
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switch (cmd) {
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case FDMSGON:
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case FDMSGOFF:
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case FDSETEMSGTRESH:
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case FDFLUSH:
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case FDWERRORCLR:
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case FDEJECT:
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case FDCLRPRM:
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case FDFMTBEG:
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case FDRESET:
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case FDTWADDLE:
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return fd_ioctl(bdev, mode, cmd, param);
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case FDSETMAXERRS:
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case FDGETMAXERRS:
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case FDGETDRVTYP:
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case FDFMTEND:
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case FDFMTTRK:
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case FDRAWCMD:
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return fd_ioctl(bdev, mode, cmd,
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(unsigned long)compat_ptr(param));
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case FDSETPRM32:
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case FDDEFPRM32:
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return compat_set_geometry(bdev, mode, cmd, compat_ptr(param));
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case FDGETPRM32:
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return compat_get_prm(drive, compat_ptr(param));
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case FDSETDRVPRM32:
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return compat_setdrvprm(drive, compat_ptr(param));
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case FDGETDRVPRM32:
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return compat_getdrvprm(drive, compat_ptr(param));
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case FDPOLLDRVSTAT32:
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return compat_getdrvstat(drive, true, compat_ptr(param));
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case FDGETDRVSTAT32:
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return compat_getdrvstat(drive, false, compat_ptr(param));
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case FDGETFDCSTAT32:
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return compat_getfdcstat(drive, compat_ptr(param));
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case FDWERRORGET32:
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return compat_werrorget(drive, compat_ptr(param));
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}
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return -EINVAL;
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}
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#endif
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static void __init config_types(void)
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{
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bool has_drive = false;
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@@ -3885,6 +4210,9 @@ static const struct block_device_operations floppy_fops = {
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.getgeo = fd_getgeo,
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.check_events = floppy_check_events,
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.revalidate_disk = floppy_revalidate,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = fd_compat_ioctl,
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#endif
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};
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/*
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