From 61edcb8bfa316e3c091f71b1d73dd81a5359d965 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <greg@kroah.com>
Date: Fri, 3 Oct 2003 00:49:02 -0700
Subject: [PATCH] [PATCH] USB: convert usbfs to use new fs parser code.

---
 drivers/usb/core/inode.c | 143 +++++++++++++++++++++------------------
 1 file changed, 76 insertions(+), 67 deletions(-)

diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 8474deb3f277b..ff34ed0135437 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -38,6 +38,7 @@
 #include <linux/namei.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/smp_lock.h>
+#include <linux/parser.h>
 #include <asm/byteorder.h>
 
 static struct super_operations usbfs_ops;
@@ -62,86 +63,94 @@ static umode_t devmode = S_IWUSR | S_IRUGO;
 static umode_t busmode = S_IXUGO | S_IRUGO;
 static umode_t listmode = S_IRUGO;
 
+enum {
+	Opt_devuid, Opt_devgid, Opt_devmode,
+	Opt_busuid, Opt_busgid, Opt_busmode,
+	Opt_listuid, Opt_listgid, Opt_listmode,
+	Opt_err,
+};
+
+static match_table_t tokens = {
+	{Opt_devuid, "devuid=%u"},
+	{Opt_devgid, "devgid=%u"},
+	{Opt_devmode, "devmode=%o"},
+	{Opt_busuid, "busuid=%u"},
+	{Opt_busgid, "busgid=%u"},
+	{Opt_busmode, "busmode=%o"},
+	{Opt_listuid, "listuid=%u"},
+	{Opt_listgid, "listgid=%u"},
+	{Opt_listmode, "listmode=%o"},
+	{Opt_err, NULL}
+};
+
 static int parse_options(struct super_block *s, char *data)
 {
-	char *curopt = NULL, *value;
+	char *p;
+	int option;
 
-	while ((curopt = strsep(&data, ",")) != NULL) {
-		if (!*curopt)
+	while ((p = strsep(&data, ",")) != NULL) {
+		substring_t args[MAX_OPT_ARGS];
+		int token;
+		if (!*p)
 			continue;
-		if ((value = strchr(curopt, '=')) != NULL)
-			*value++ = 0;
-		if (!strcmp(curopt, "devuid")) {
-			if (!value || !value[0])
-				return -EINVAL;
-			devuid = simple_strtoul(value, &value, 0);
-			if (*value)
-				return -EINVAL;
-		}
-		if (!strcmp(curopt, "devgid")) {
-			if (!value || !value[0])
-				return -EINVAL;
-			devgid = simple_strtoul(value, &value, 0);
-			if (*value)
-				return -EINVAL;
-		}
-		if (!strcmp(curopt, "devmode")) {
-			if (!value || !value[0])
-				return -EINVAL;
-			devmode = simple_strtoul(value, &value, 0) & S_IRWXUGO;
-			if (*value)
-				return -EINVAL;
-		}
-		if (!strcmp(curopt, "busuid")) {
-			if (!value || !value[0])
-				return -EINVAL;
-			busuid = simple_strtoul(value, &value, 0);
-			if (*value)
-				return -EINVAL;
-		}
-		if (!strcmp(curopt, "busgid")) {
-			if (!value || !value[0])
-				return -EINVAL;
-			busgid = simple_strtoul(value, &value, 0);
-			if (*value)
-				return -EINVAL;
-		}
-		if (!strcmp(curopt, "busmode")) {
-			if (!value || !value[0])
-				return -EINVAL;
-			busmode = simple_strtoul(value, &value, 0) & S_IRWXUGO;
-			if (*value)
-				return -EINVAL;
-		}
-		if (!strcmp(curopt, "listuid")) {
-			if (!value || !value[0])
-				return -EINVAL;
-			listuid = simple_strtoul(value, &value, 0);
-			if (*value)
-				return -EINVAL;
-		}
-		if (!strcmp(curopt, "listgid")) {
-			if (!value || !value[0])
-				return -EINVAL;
-			listgid = simple_strtoul(value, &value, 0);
-			if (*value)
+
+		token = match_token(p, tokens, args);
+		switch (token) {
+		case Opt_devuid:
+			if (match_int(&args[0], &option))
+			       return -EINVAL;
+			devuid = option;
+			break;
+		case Opt_devgid:
+			if (match_int(&args[0], &option))
+			       return -EINVAL;
+			devgid = option;
+			break;
+		case Opt_devmode:
+			if (match_octal(&args[0], &option))
 				return -EINVAL;
-		}
-		if (!strcmp(curopt, "listmode")) {
-			if (!value || !value[0])
+			devmode = option & S_IRWXUGO;
+			break;
+		case Opt_busuid:
+			if (match_int(&args[0], &option))
+			       return -EINVAL;
+			busuid = option;
+			break;
+		case Opt_busgid:
+			if (match_int(&args[0], &option))
+			       return -EINVAL;
+			busgid = option;
+			break;
+		case Opt_busmode:
+			if (match_octal(&args[0], &option))
 				return -EINVAL;
-			listmode = simple_strtoul(value, &value, 0) & S_IRWXUGO;
-			if (*value)
+			busmode = option & S_IRWXUGO;
+			break;
+		case Opt_listuid:
+			if (match_int(&args[0], &option))
+			       return -EINVAL;
+			listuid = option;
+			break;
+		case Opt_listgid:
+			if (match_int(&args[0], &option))
+			       return -EINVAL;
+			listgid = option;
+			break;
+		case Opt_listmode:
+			if (match_octal(&args[0], &option))
 				return -EINVAL;
+			listmode = option & S_IRWXUGO;
+			break;
+		default:
+			err("usbfs: unrecognised mount option \"%s\" "
+			    "or missing value\n", p);
+			return -EINVAL;
 		}
 	}
 
 	return 0;
 }
 
-
-/* --------------------------------------------------------------------- */
-
 static struct inode *usbfs_get_inode (struct super_block *sb, int mode, dev_t dev)
 {
 	struct inode *inode = new_inode(sb);
-- 
2.53.0