compat_ioctl: don't pass fd around when not needed
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
parent
b43417216e
commit
66cf191f3e
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@ -58,6 +58,8 @@
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#include <linux/atalk.h>
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#include <linux/gfp.h>
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#include "internal.h"
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_sock.h>
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#include <net/bluetooth/rfcomm.h>
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@ -115,8 +117,7 @@
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#include <asm/fbio.h>
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#endif
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static int do_ioctl(struct file *file, unsigned int fd,
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unsigned int cmd, unsigned long arg)
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static int do_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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int err;
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@ -124,10 +125,10 @@ static int do_ioctl(struct file *file, unsigned int fd,
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if (err)
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return err;
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return do_vfs_ioctl(file, fd, cmd, arg);
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return vfs_ioctl(file, cmd, arg);
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}
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static int w_long(struct file *file, unsigned int fd,
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static int w_long(struct file *file,
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unsigned int cmd, compat_ulong_t __user *argp)
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{
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mm_segment_t old_fs = get_fs();
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@ -135,7 +136,7 @@ static int w_long(struct file *file, unsigned int fd,
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unsigned long val;
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set_fs (KERNEL_DS);
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err = do_ioctl(file, fd, cmd, (unsigned long)&val);
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err = do_ioctl(file, cmd, (unsigned long)&val);
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set_fs (old_fs);
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if (!err && put_user(val, argp))
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return -EFAULT;
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@ -151,7 +152,7 @@ struct compat_video_event {
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} u;
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};
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static int do_video_get_event(struct file *file, unsigned int fd,
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static int do_video_get_event(struct file *file,
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unsigned int cmd, struct compat_video_event __user *up)
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{
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struct video_event kevent;
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@ -159,7 +160,7 @@ static int do_video_get_event(struct file *file, unsigned int fd,
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int err;
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set_fs(KERNEL_DS);
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err = do_ioctl(file, fd, cmd, (unsigned long) &kevent);
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err = do_ioctl(file, cmd, (unsigned long) &kevent);
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set_fs(old_fs);
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if (!err) {
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@ -181,7 +182,7 @@ struct compat_video_still_picture {
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int32_t size;
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};
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static int do_video_stillpicture(struct file *file, unsigned int fd,
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static int do_video_stillpicture(struct file *file,
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unsigned int cmd, struct compat_video_still_picture __user *up)
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{
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struct video_still_picture __user *up_native;
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@ -202,7 +203,7 @@ static int do_video_stillpicture(struct file *file, unsigned int fd,
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if (err)
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return -EFAULT;
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err = do_ioctl(file, fd, cmd, (unsigned long) up_native);
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err = do_ioctl(file, cmd, (unsigned long) up_native);
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return err;
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}
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@ -212,7 +213,7 @@ struct compat_video_spu_palette {
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compat_uptr_t palette;
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};
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static int do_video_set_spu_palette(struct file *file, unsigned int fd,
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static int do_video_set_spu_palette(struct file *file,
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unsigned int cmd, struct compat_video_spu_palette __user *up)
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{
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struct video_spu_palette __user *up_native;
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@ -230,7 +231,7 @@ static int do_video_set_spu_palette(struct file *file, unsigned int fd,
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if (err)
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return -EFAULT;
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err = do_ioctl(file, fd, cmd, (unsigned long) up_native);
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err = do_ioctl(file, cmd, (unsigned long) up_native);
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return err;
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}
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@ -288,7 +289,7 @@ static int sg_build_iovec(sg_io_hdr_t __user *sgio, void __user *dxferp, u16 iov
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return 0;
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}
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static int sg_ioctl_trans(struct file *file, unsigned int fd, unsigned int cmd,
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static int sg_ioctl_trans(struct file *file, unsigned int cmd,
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sg_io_hdr32_t __user *sgio32)
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{
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sg_io_hdr_t __user *sgio;
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@ -301,7 +302,7 @@ static int sg_ioctl_trans(struct file *file, unsigned int fd, unsigned int cmd,
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if (get_user(interface_id, &sgio32->interface_id))
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return -EFAULT;
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if (interface_id != 'S')
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return do_ioctl(file, fd, cmd, (unsigned long)sgio32);
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return do_ioctl(file, cmd, (unsigned long)sgio32);
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if (get_user(iovec_count, &sgio32->iovec_count))
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return -EFAULT;
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@ -361,7 +362,7 @@ static int sg_ioctl_trans(struct file *file, unsigned int fd, unsigned int cmd,
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if (put_user(compat_ptr(data), &sgio->usr_ptr))
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return -EFAULT;
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err = do_ioctl(file, fd, cmd, (unsigned long) sgio);
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err = do_ioctl(file, cmd, (unsigned long) sgio);
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if (err >= 0) {
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void __user *datap;
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@ -392,13 +393,13 @@ struct compat_sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */
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int unused;
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};
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static int sg_grt_trans(struct file *file, unsigned int fd,
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static int sg_grt_trans(struct file *file,
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unsigned int cmd, struct compat_sg_req_info __user *o)
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{
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int err, i;
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sg_req_info_t __user *r;
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r = compat_alloc_user_space(sizeof(sg_req_info_t)*SG_MAX_QUEUE);
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err = do_ioctl(file, fd, cmd, (unsigned long)r);
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err = do_ioctl(file, cmd, (unsigned long)r);
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if (err < 0)
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return err;
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for (i = 0; i < SG_MAX_QUEUE; i++) {
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@ -424,7 +425,7 @@ struct sock_fprog32 {
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#define PPPIOCSPASS32 _IOW('t', 71, struct sock_fprog32)
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#define PPPIOCSACTIVE32 _IOW('t', 70, struct sock_fprog32)
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static int ppp_sock_fprog_ioctl_trans(struct file *file, unsigned int fd,
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static int ppp_sock_fprog_ioctl_trans(struct file *file,
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unsigned int cmd, struct sock_fprog32 __user *u_fprog32)
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{
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struct sock_fprog __user *u_fprog64 = compat_alloc_user_space(sizeof(struct sock_fprog));
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@ -447,7 +448,7 @@ static int ppp_sock_fprog_ioctl_trans(struct file *file, unsigned int fd,
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else
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cmd = PPPIOCSACTIVE;
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return do_ioctl(file, fd, cmd, (unsigned long) u_fprog64);
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return do_ioctl(file, cmd, (unsigned long) u_fprog64);
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}
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struct ppp_option_data32 {
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@ -463,7 +464,7 @@ struct ppp_idle32 {
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};
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#define PPPIOCGIDLE32 _IOR('t', 63, struct ppp_idle32)
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static int ppp_gidle(struct file *file, unsigned int fd, unsigned int cmd,
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static int ppp_gidle(struct file *file, unsigned int cmd,
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struct ppp_idle32 __user *idle32)
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{
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struct ppp_idle __user *idle;
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@ -472,7 +473,7 @@ static int ppp_gidle(struct file *file, unsigned int fd, unsigned int cmd,
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idle = compat_alloc_user_space(sizeof(*idle));
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err = do_ioctl(file, fd, PPPIOCGIDLE, (unsigned long) idle);
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err = do_ioctl(file, PPPIOCGIDLE, (unsigned long) idle);
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if (!err) {
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if (get_user(xmit, &idle->xmit_idle) ||
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@ -484,7 +485,7 @@ static int ppp_gidle(struct file *file, unsigned int fd, unsigned int cmd,
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return err;
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}
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static int ppp_scompress(struct file *file, unsigned int fd, unsigned int cmd,
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static int ppp_scompress(struct file *file, unsigned int cmd,
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struct ppp_option_data32 __user *odata32)
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{
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struct ppp_option_data __user *odata;
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@ -504,7 +505,7 @@ static int ppp_scompress(struct file *file, unsigned int fd, unsigned int cmd,
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sizeof(__u32) + sizeof(int)))
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return -EFAULT;
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return do_ioctl(file, fd, PPPIOCSCOMPRESS, (unsigned long) odata);
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return do_ioctl(file, PPPIOCSCOMPRESS, (unsigned long) odata);
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}
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#ifdef CONFIG_BLOCK
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@ -524,7 +525,7 @@ struct mtpos32 {
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};
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#define MTIOCPOS32 _IOR('m', 3, struct mtpos32)
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static int mt_ioctl_trans(struct file *file, unsigned int fd,
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static int mt_ioctl_trans(struct file *file,
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unsigned int cmd, void __user *argp)
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{
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mm_segment_t old_fs = get_fs();
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@ -547,7 +548,7 @@ static int mt_ioctl_trans(struct file *file, unsigned int fd,
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break;
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}
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set_fs (KERNEL_DS);
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err = do_ioctl(file, fd, kcmd, (unsigned long)karg);
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err = do_ioctl(file, kcmd, (unsigned long)karg);
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set_fs (old_fs);
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if (err)
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return err;
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@ -618,7 +619,7 @@ struct serial_struct32 {
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compat_int_t reserved[1];
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};
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static int serial_struct_ioctl(struct file *file, unsigned fd,
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static int serial_struct_ioctl(struct file *file,
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unsigned cmd, struct serial_struct32 __user *ss32)
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{
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typedef struct serial_struct32 SS32;
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@ -642,7 +643,7 @@ static int serial_struct_ioctl(struct file *file, unsigned fd,
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ss.iomap_base = 0UL;
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}
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set_fs(KERNEL_DS);
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err = do_ioctl(file, fd, cmd, (unsigned long)&ss);
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err = do_ioctl(file, cmd, (unsigned long)&ss);
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set_fs(oldseg);
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if (cmd == TIOCGSERIAL && err >= 0) {
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if (!access_ok(VERIFY_WRITE, ss32, sizeof(SS32)))
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@ -687,7 +688,7 @@ struct i2c_rdwr_aligned {
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struct i2c_msg msgs[0];
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};
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static int do_i2c_rdwr_ioctl(struct file *file, unsigned int fd,
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static int do_i2c_rdwr_ioctl(struct file *file,
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unsigned int cmd, struct i2c_rdwr_ioctl_data32 __user *udata)
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{
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struct i2c_rdwr_aligned __user *tdata;
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@ -721,10 +722,10 @@ static int do_i2c_rdwr_ioctl(struct file *file, unsigned int fd,
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put_user(compat_ptr(datap), &tmsgs[i].buf))
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return -EFAULT;
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}
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return do_ioctl(file, fd, cmd, (unsigned long)tdata);
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return do_ioctl(file, cmd, (unsigned long)tdata);
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}
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static int do_i2c_smbus_ioctl(struct file *file, unsigned int fd,
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static int do_i2c_smbus_ioctl(struct file *file,
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unsigned int cmd, struct i2c_smbus_ioctl_data32 __user *udata)
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{
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struct i2c_smbus_ioctl_data __user *tdata;
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@ -747,7 +748,7 @@ static int do_i2c_smbus_ioctl(struct file *file, unsigned int fd,
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__put_user(compat_ptr(datap), &tdata->data))
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return -EFAULT;
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return do_ioctl(file, fd, cmd, (unsigned long)tdata);
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return do_ioctl(file, cmd, (unsigned long)tdata);
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}
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#define RTC_IRQP_READ32 _IOR('p', 0x0b, compat_ulong_t)
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@ -755,7 +756,7 @@ static int do_i2c_smbus_ioctl(struct file *file, unsigned int fd,
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#define RTC_EPOCH_READ32 _IOR('p', 0x0d, compat_ulong_t)
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#define RTC_EPOCH_SET32 _IOW('p', 0x0e, compat_ulong_t)
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static int rtc_ioctl(struct file *file, unsigned fd,
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static int rtc_ioctl(struct file *file,
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unsigned cmd, void __user *argp)
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{
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mm_segment_t oldfs = get_fs();
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@ -767,7 +768,7 @@ static int rtc_ioctl(struct file *file, unsigned fd,
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case RTC_IRQP_READ32:
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case RTC_EPOCH_READ32:
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set_fs(KERNEL_DS);
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ret = do_ioctl(file, fd, (cmd == RTC_IRQP_READ32) ?
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ret = do_ioctl(file, (cmd == RTC_IRQP_READ32) ?
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RTC_IRQP_READ : RTC_EPOCH_READ,
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(unsigned long)&kval);
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set_fs(oldfs);
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@ -776,9 +777,9 @@ static int rtc_ioctl(struct file *file, unsigned fd,
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val32 = kval;
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return put_user(val32, (unsigned int __user *)argp);
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case RTC_IRQP_SET32:
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return do_ioctl(file, fd, RTC_IRQP_SET, (unsigned long)argp);
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return do_ioctl(file, RTC_IRQP_SET, (unsigned long)argp);
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case RTC_EPOCH_SET32:
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return do_ioctl(file, fd, RTC_EPOCH_SET, (unsigned long)argp);
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return do_ioctl(file, RTC_EPOCH_SET, (unsigned long)argp);
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}
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return -ENOIOCTLCMD;
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@ -1450,53 +1451,53 @@ IGNORE_IOCTL(FBIOGCURSOR32)
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* a compat_ioctl operation in the place that handleѕ the
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* ioctl for the native case.
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*/
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static long do_ioctl_trans(int fd, unsigned int cmd,
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static long do_ioctl_trans(unsigned int cmd,
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unsigned long arg, struct file *file)
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{
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void __user *argp = compat_ptr(arg);
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switch (cmd) {
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case PPPIOCGIDLE32:
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return ppp_gidle(file, fd, cmd, argp);
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return ppp_gidle(file, cmd, argp);
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case PPPIOCSCOMPRESS32:
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return ppp_scompress(file, fd, cmd, argp);
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return ppp_scompress(file, cmd, argp);
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case PPPIOCSPASS32:
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case PPPIOCSACTIVE32:
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return ppp_sock_fprog_ioctl_trans(file, fd, cmd, argp);
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return ppp_sock_fprog_ioctl_trans(file, cmd, argp);
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#ifdef CONFIG_BLOCK
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case SG_IO:
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return sg_ioctl_trans(file, fd, cmd, argp);
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return sg_ioctl_trans(file, cmd, argp);
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case SG_GET_REQUEST_TABLE:
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return sg_grt_trans(file, fd, cmd, argp);
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return sg_grt_trans(file, cmd, argp);
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case MTIOCGET32:
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case MTIOCPOS32:
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return mt_ioctl_trans(file, fd, cmd, argp);
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return mt_ioctl_trans(file, cmd, argp);
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#endif
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/* Serial */
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case TIOCGSERIAL:
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case TIOCSSERIAL:
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return serial_struct_ioctl(file, fd, cmd, argp);
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return serial_struct_ioctl(file, cmd, argp);
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/* i2c */
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case I2C_FUNCS:
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return w_long(file, fd, cmd, argp);
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return w_long(file, cmd, argp);
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case I2C_RDWR:
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return do_i2c_rdwr_ioctl(file, fd, cmd, argp);
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return do_i2c_rdwr_ioctl(file, cmd, argp);
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case I2C_SMBUS:
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return do_i2c_smbus_ioctl(file, fd, cmd, argp);
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return do_i2c_smbus_ioctl(file, cmd, argp);
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/* Not implemented in the native kernel */
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case RTC_IRQP_READ32:
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case RTC_IRQP_SET32:
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case RTC_EPOCH_READ32:
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case RTC_EPOCH_SET32:
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return rtc_ioctl(file, fd, cmd, argp);
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return rtc_ioctl(file, cmd, argp);
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/* dvb */
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case VIDEO_GET_EVENT:
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return do_video_get_event(file, fd, cmd, argp);
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return do_video_get_event(file, cmd, argp);
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case VIDEO_STILLPICTURE:
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return do_video_stillpicture(file, fd, cmd, argp);
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return do_video_stillpicture(file, cmd, argp);
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case VIDEO_SET_SPU_PALETTE:
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return do_video_set_spu_palette(file, fd, cmd, argp);
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return do_video_set_spu_palette(file, cmd, argp);
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}
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/*
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@ -1527,7 +1528,7 @@ static long do_ioctl_trans(int fd, unsigned int cmd,
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case NBD_SET_BLKSIZE:
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case NBD_SET_SIZE:
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case NBD_SET_SIZE_BLOCKS:
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return do_vfs_ioctl(file, fd, cmd, arg);
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return vfs_ioctl(file, cmd, arg);
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}
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return -ENOIOCTLCMD;
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@ -1616,7 +1617,7 @@ COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
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if (compat_ioctl_check_table(XFORM(cmd)))
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goto found_handler;
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error = do_ioctl_trans(fd, cmd, arg, f.file);
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error = do_ioctl_trans(cmd, arg, f.file);
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if (error == -ENOIOCTLCMD)
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error = -ENOTTY;
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@ -151,3 +151,10 @@ extern void mnt_pin_kill(struct mount *m);
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* fs/nsfs.c
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*/
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extern struct dentry_operations ns_dentry_operations;
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/*
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* fs/ioctl.c
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*/
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extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
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unsigned long arg);
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extern long vfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
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|
|
@ -15,6 +15,7 @@
|
|||
#include <linux/writeback.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/falloc.h>
|
||||
#include "internal.h"
|
||||
|
||||
#include <asm/ioctls.h>
|
||||
|
||||
|
|
@ -32,8 +33,7 @@
|
|||
*
|
||||
* Returns 0 on success, -errno on error.
|
||||
*/
|
||||
static long vfs_ioctl(struct file *filp, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
long vfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
int error = -ENOTTY;
|
||||
|
||||
|
|
|
|||
|
|
@ -2764,8 +2764,6 @@ extern int vfs_lstat(const char __user *, struct kstat *);
|
|||
extern int vfs_fstat(unsigned int, struct kstat *);
|
||||
extern int vfs_fstatat(int , const char __user *, struct kstat *, int);
|
||||
|
||||
extern int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
|
||||
unsigned long arg);
|
||||
extern int __generic_block_fiemap(struct inode *inode,
|
||||
struct fiemap_extent_info *fieinfo,
|
||||
loff_t start, loff_t len,
|
||||
|
|
|
|||
Loading…
Reference in New Issue