[PATCH] conditional remove of trailing sysfs whitespace

[elogind.git] / namedev.c

diff --git a/namedev.c b/namedev.c
index e9b3babd566c3f451a9fd8199163458eff4233b3..dfeadee18a7e5100b1e3ff35ac67ec1e41cafc55 100644 (file)
--- a/namedev.c
+++ b/namedev.c
@@ -220,8 +220,9 @@ static void apply_format(struct udevice *udev, char *string, size_t maxsize,
        char *attr;
        int len;
        int i;
-       int spos, slen;
        char c;
+       char *spos;
+       int slen;
        struct sysfs_attribute *tmpattr;
 
        pos = string;
@@ -278,7 +279,6 @@ static void apply_format(struct udevice *udev, char *string, size_t maxsize,
                                i = atoi(attr);
                        if (i > 0) {
                                foreach_strpart(udev->program_result, " \n\r", spos, slen) {
-                                       strnfieldcpy(temp2, udev->program_result + spos, slen+1);
                                        i--;
                                        if (i == 0)
                                                break;
@@ -287,6 +287,7 @@ static void apply_format(struct udevice *udev, char *string, size_t maxsize,
                                        dbg("requested part of result string not found");
                                        break;
                                }
+                               strnfieldcpy(temp2, spos, slen+1);
                                strnfieldcat(string, temp2, maxsize);
                                dbg("substitute part of result string '%s'", temp2);
                        } else {
@@ -524,6 +525,8 @@ attr_found:
 static int compare_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, struct sysfs_pair *pair)
 {
        struct sysfs_attribute *tmpattr;
+       int i;
+       int len;
 
        if ((pair == NULL) || (pair->file[0] == '\0') || (pair->value == '\0'))
                return -ENODEV;
@@ -532,6 +535,18 @@ static int compare_sysfs_attribute(struct sysfs_class_device *class_dev, struct
        if (tmpattr == NULL)
                return -ENODEV;
 
+       /* strip trailing whitespace of value, if not asked to match for it */
+       if (! isspace(pair->value[strlen(pair->value)-1])) {
+               i = len = strlen(tmpattr->value);
+               while (i > 0 &&  isspace(tmpattr->value[i-1]))
+                       i--;
+               if (i < len) {
+                       tmpattr->value[i] = '\0';
+                       dbg("remove %i trailing whitespace chars from '%s'",
+                           len - i, tmpattr->value);
+               }
+       }
+
        dbg("compare attribute '%s' value '%s' with '%s'",
                  pair->file, tmpattr->value, pair->value);
        if (strcmp_pattern(pair->value, tmpattr->value) != 0)