1 files changed, 52 insertions, 231 deletions

diff --git a/drivers/staging/usbip/userspace/src/utils.c b/drivers/staging/usbip/userspace/src/utils.c
index 8f441089b645..2d4966e6289c 100644
--- a/drivers/staging/usbip/userspace/src/utils.c
+++ b/drivers/staging/usbip/userspace/src/utils.c
@@ -1,255 +1,76 @@
 /*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
  *
- * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "utils.h"
-
-int read_integer(char *path)
-{
-	char buff[100];
-	int fd;
-	int ret = 0;
-
-	bzero(buff, sizeof(buff));
-
-	fd = open(path, O_RDONLY);
-	if (fd < 0)
-		return -1;
-
-	ret = read(fd, buff, sizeof(buff));
-	if (ret < 0) {
-		close(fd);
-		return -1;
-	}
-
-	sscanf(buff, "%d", &ret);
-
-	close(fd);
-
-	return ret;
-}
-
-int read_string(char *path, char *string, size_t len)
-{
-	int fd;
-	int ret = 0;
-	char  *p;
-
-	bzero(string, len);
-
-	fd = open(path, O_RDONLY);
-	if (fd < 0) {
-		string = NULL;
-		return -1;
-	}
-
-	ret = read(fd, string, len-1);
-	if (ret < 0) {
-		string = NULL;
-		close(fd);
-		return -1;
-	}
-
-	p = strchr(string, '\n');
-	*p = '\0';
+#include <sysfs/libsysfs.h>
 
-	close(fd);
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
 
-	return 0;
-}
+#include "usbip_common.h"
+#include "utils.h"
 
-int write_integer(char *path, int value)
+int modify_match_busid(char *busid, int add)
 {
-	int fd;
-	int ret;
-	char buff[100];
-
-	snprintf(buff, sizeof(buff), "%d", value);
-
-	fd = open(path, O_WRONLY);
-	if (fd < 0)
-		return -1;
-
-	ret = write(fd, buff, strlen(buff));
-	if (ret < 0) {
-		close(fd);
+	char bus_type[] = "usb";
+	char attr_name[] = "match_busid";
+	char buff[SYSFS_BUS_ID_SIZE + 4];
+	char sysfs_mntpath[SYSFS_PATH_MAX];
+	char match_busid_attr_path[SYSFS_PATH_MAX];
+	struct sysfs_attribute *match_busid_attr;
+	int rc, ret = 0;
+
+	if (strnlen(busid, SYSFS_BUS_ID_SIZE) > SYSFS_BUS_ID_SIZE - 1) {
+		dbg("busid is too long");
 		return -1;
 	}
 
-	close(fd);
-
-	return 0;
-}
-
-int read_bConfigurationValue(char *busid)
-{
-	char path[PATH_MAX];
-
-	snprintf(path, PATH_MAX, "/sys/bus/usb/devices/%s/bConfigurationValue", busid);
-
-	return read_integer(path);
-}
-
-int write_bConfigurationValue(char *busid, int config)
-{
-	char path[PATH_MAX];
-
-	snprintf(path, PATH_MAX, "/sys/bus/usb/devices/%s/bConfigurationValue", busid);
-
-	return write_integer(path, config);
-}
-
-int read_bNumInterfaces(char *busid)
-{
-	char path[PATH_MAX];
-
-	snprintf(path, PATH_MAX, "/sys/bus/usb/devices/%s/bNumInterfaces", busid);
-
-	return read_integer(path);
-}
-
-int read_bDeviceClass(char *busid)
-{
-	char path[PATH_MAX];
-
-	snprintf(path, PATH_MAX, "/sys/bus/usb/devices/%s/bDeviceClass", busid);
-
-	return read_integer(path);
-}
-
-int getdriver(char *busid, int conf, int infnum, char *driver, size_t len)
-{
-	char path[PATH_MAX];
-	char linkto[PATH_MAX];
-	int ret;
-
-	snprintf(path, PATH_MAX, "/sys/bus/usb/devices/%s:%d.%d/driver", busid, conf, infnum);
-
-	/* readlink does not add NULL */
-	bzero(linkto, sizeof(linkto));
-	ret = readlink(path, linkto, sizeof(linkto)-1);
-	if (ret < 0) {
-		strncpy(driver, "none", len);
+	rc = sysfs_get_mnt_path(sysfs_mntpath, SYSFS_PATH_MAX);
+	if (rc < 0) {
+		err("sysfs must be mounted: %s", strerror(errno));
 		return -1;
-	} else {
-		strncpy(driver, basename(linkto), len);
-		return 0;
 	}
-}
-
-int getdevicename(char *busid, char *name, size_t len)
-{
-	char path[PATH_MAX];
-	char idProduct[10], idVendor[10];
 
-	snprintf(path, PATH_MAX, "/sys/bus/usb/devices/%s/idVendor", busid);
-	read_string(path, idVendor, sizeof(idVendor));
+	snprintf(match_busid_attr_path, sizeof(match_busid_attr_path),
+		 "%s/%s/%s/%s/%s/%s", sysfs_mntpath, SYSFS_BUS_NAME, bus_type,
+		 SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME, attr_name);
 
-	snprintf(path, PATH_MAX, "/sys/bus/usb/devices/%s/idProduct", busid);
-	read_string(path, idProduct, sizeof(idProduct));
-
-	if (!idVendor[0] || !idProduct[0])
+	match_busid_attr = sysfs_open_attribute(match_busid_attr_path);
+	if (!match_busid_attr) {
+		dbg("problem getting match_busid attribute: %s",
+		    strerror(errno));
 		return -1;
-
-	snprintf(name, len, "%s:%s", idVendor, idProduct);
-
-	return 0;
-}
-
-#define MAXLINE 100
-
-/* if this cannot read a whole line, return -1 */
-int readline(int sockfd, char *buff, int bufflen)
-{
-	int ret;
-	char c;
-	int index = 0;
-
-
-	while (index < bufflen) {
-		ret = read(sockfd, &c, sizeof(c));
-		if (ret < 0 && errno == EINTR)
-			continue;
-		if (ret <= 0) {
-			return -1;
-		}
-
-		buff[index] = c;
-
-		if ( index > 0 && buff[index-1] == '\r'  && buff[index] == '\n') {
-			/* end of line */
-			buff[index-1] = '\0';	/* get rid of delimitor */
-			return index;
-		} else
-			index++;
 	}
 
-	return -1;
-}
-
-#if 0
-int writeline(int sockfd, char *str, int strlen)
-{
-	int ret;
-	int index = 0;
-	int len;
-	char buff[MAXLINE];
-
-	if (strlen + 3 > MAXLINE)
-		return -1;
-
-	strncpy(buff, str, strlen);
-	buff[strlen+1] = '\r';
-	buff[strlen+2] = '\n';
-	buff[strlen+3] = '\0';
+	if (add)
+		snprintf(buff, SYSFS_BUS_ID_SIZE + 4, "add %s", busid);
+	else
+		snprintf(buff, SYSFS_BUS_ID_SIZE + 4, "del %s", busid);
 
-	len = strlen + 3;
+	dbg("write \"%s\" to %s", buff, match_busid_attr->path);
 
-	while (len > 0) {
-		ret = write(sockfd, buff+index, len);
-		if (ret <= 0) {
-			return -1;
-		}
-
-		len -= ret;
-		index += ret;
+	rc = sysfs_write_attribute(match_busid_attr, buff, sizeof(buff));
+	if (rc < 0) {
+		dbg("failed to write match_busid: %s", strerror(errno));
+		ret = -1;
 	}
 
-	return index;
-}
-#endif
+	sysfs_close_attribute(match_busid_attr);
 
-int writeline(int sockfd, char *str, int strlen)
-{
-	int ret;
-	int index = 0;
-	int len;
-	char buff[MAXLINE];
-
-	len = strnlen(str, strlen);
-
-	if (strlen + 2 > MAXLINE)
-		return -1;
-
-	memcpy(buff, str, strlen);
-	buff[strlen] = '\r';
-	buff[strlen+1] = '\n';		/* strlen+1 <= MAXLINE-1 */
-
-	len = strlen + 2;
-
-	while (len > 0) {
-		ret = write(sockfd, buff+index, len);
-		if (ret < 0 && errno == EINTR)
-			continue;
-		if (ret <= 0) {
-			return -1;
-		}
-
-		len -= ret;
-		index += ret;
-	}
-
-	return index;
+	return ret;
 }
-