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Commit 2e4f3c02 authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Greg Kroah-Hartman
Browse files

USB: mount options: fix usbfs 



Add a .show_options super operation to usbfs.

Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 8dd70705

drivers/usb/core/inode.c

+36 −6
Original line number Diff line number Diff line
@@ -38,10 +38,15 @@ 
#include <linux/usbdevice_fs.h>

#include <linux/parser.h>

#include <linux/notifier.h>

#include <linux/seq_file.h>

#include <asm/byteorder.h>

#include "usb.h"

#include "hcd.h"



#define USBFS_DEFAULT_DEVMODE (S_IWUSR | S_IRUGO)

#define USBFS_DEFAULT_BUSMODE (S_IXUGO | S_IRUGO)

#define USBFS_DEFAULT_LISTMODE S_IRUGO



static struct super_operations usbfs_ops;

static const struct file_operations default_file_operations;

static struct vfsmount *usbfs_mount;
@@ -57,9 +62,33 @@ static uid_t listuid; /* = 0 */ 
static gid_t devgid;	/* = 0 */

static gid_t busgid;	/* = 0 */

static gid_t listgid;	/* = 0 */

static umode_t devmode = S_IWUSR | S_IRUGO;

static umode_t busmode = S_IXUGO | S_IRUGO;

static umode_t listmode = S_IRUGO;

static umode_t devmode = USBFS_DEFAULT_DEVMODE;

static umode_t busmode = USBFS_DEFAULT_BUSMODE;

static umode_t listmode = USBFS_DEFAULT_LISTMODE;



static int usbfs_show_options(struct seq_file *seq, struct vfsmount *mnt)

{

	if (devuid != 0)

		seq_printf(seq, ",devuid=%u", devuid);

	if (devgid != 0)

		seq_printf(seq, ",devgid=%u", devgid);

	if (devmode != USBFS_DEFAULT_DEVMODE)

		seq_printf(seq, ",devmode=%o", devmode);

	if (busuid != 0)

		seq_printf(seq, ",busuid=%u", busuid);

	if (busgid != 0)

		seq_printf(seq, ",busgid=%u", busgid);

	if (busmode != USBFS_DEFAULT_BUSMODE)

		seq_printf(seq, ",busmode=%o", busmode);

	if (listuid != 0)

		seq_printf(seq, ",listuid=%u", listuid);

	if (listgid != 0)

		seq_printf(seq, ",listgid=%u", listgid);

	if (listmode != USBFS_DEFAULT_LISTMODE)

		seq_printf(seq, ",listmode=%o", listmode);



	return 0;

}



enum {

	Opt_devuid, Opt_devgid, Opt_devmode,
@@ -93,9 +122,9 @@ static int parse_options(struct super_block *s, char *data) 
	devgid = 0;

	busgid = 0;

	listgid = 0;

	devmode = S_IWUSR | S_IRUGO;

	busmode = S_IXUGO | S_IRUGO;

	listmode = S_IRUGO;

	devmode = USBFS_DEFAULT_DEVMODE;

	busmode = USBFS_DEFAULT_BUSMODE;

	listmode = USBFS_DEFAULT_LISTMODE;



	while ((p = strsep(&data, ",")) != NULL) {

		substring_t args[MAX_OPT_ARGS];
@@ -418,6 +447,7 @@ static struct super_operations usbfs_ops = { 
	.statfs =	simple_statfs,

	.drop_inode =	generic_delete_inode,

	.remount_fs =	remount,

	.show_options = usbfs_show_options,

};



static int usbfs_fill_super(struct super_block *sb, void *data, int silent)