util: Add virStringTrimOptionalNewline

And use it in virFileRead*
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

src/util/virfile.c

@@ -3811,7 +3811,6 @@ int
 virFileReadValueInt(const char *path, int *value)
 {
     char *str = NULL;
-    char *endp = NULL;
 
     if (!virFileExists(path))
         return -2;
@@ -3819,8 +3818,9 @@ virFileReadValueInt(const char *path, int *value)
     if (virFileReadAll(path, INT_STRLEN_BOUND(*value), &str) < 0)
         return -1;
 
-    if (virStrToLong_i(str, &endp, 10, value) < 0 ||
-        (endp && !c_isspace(*endp))) {
+    virStringTrimOptionalNewline(str);
+
+    if (virStrToLong_i(str, NULL, 10, value) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Invalid integer value '%s' in file '%s'"),
                        str, path);
@@ -3847,7 +3847,6 @@ int
 virFileReadValueUint(const char *path, unsigned int *value)
 {
     char *str = NULL;
-    char *endp = NULL;
 
     if (!virFileExists(path))
         return -2;
@@ -3855,8 +3854,9 @@ virFileReadValueUint(const char *path, unsigned int *value)
     if (virFileReadAll(path, INT_STRLEN_BOUND(*value), &str) < 0)
         return -1;
 
-    if (virStrToLong_uip(str, &endp, 10, value) < 0 ||
-        (endp && !c_isspace(*endp))) {
+    virStringTrimOptionalNewline(str);
+
+    if (virStrToLong_uip(str, NULL, 10, value)) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Invalid unsigned integer value '%s' in file '%s'"),
                        str, path);
@@ -3886,7 +3886,6 @@ virFileReadValueBitmap(const char *path,
 {
     char *buf = NULL;
     int ret = -1;
-    char *tmp = NULL;
 
     if (!virFileExists(path))
         return -2;
@@ -3894,10 +3893,7 @@ virFileReadValueBitmap(const char *path,
     if (virFileReadAll(path, maxlen, &buf) < 0)
         goto cleanup;
 
-    /* trim optinoal newline at the end */
-    tmp = buf + strlen(buf) - 1;
-    if (*tmp == '\n')
-        *tmp = '\0';
+    virStringTrimOptionalNewline(buf);
 
     *value = virBitmapParseUnlimited(buf);
     if (!*value)

src/util/virhostcpu.c

@@ -847,13 +847,13 @@ virHostCPUParseCountLinux(void)
     tmp = str;
     do {
         if (virStrToLong_i(tmp, &tmp, 10, &ret) < 0 ||
-            !strchr(",-\n", *tmp)) {
+            !strchr(",-", *tmp)) {
             virReportError(VIR_ERR_NO_SUPPORT,
                            _("failed to parse %s"), str);
             ret = -1;
             goto cleanup;
         }
-    } while (*tmp++ != '\n');
+    } while (*tmp++ && *tmp);
     ret++;
 
  cleanup:

src/util/virstring.h

@@ -288,4 +288,12 @@ bool virStringBufferIsPrintable(const uint8_t *buf, size_t buflen);
 
 char *virStringEncodeBase64(const uint8_t *buf, size_t buflen);
 
+static inline void
+virStringTrimOptionalNewline(char *str)
+{
+    char *tmp = str + strlen(str) - 1;
+    if (*tmp == '\n')
+        *tmp = '\0';
+}
+
 #endif /* __VIR_STRING_H__ */

src/util/virsysfs.c

@@ -89,6 +89,8 @@ virSysfsGetValueString(const char *file,
     if (virFileReadAll(path, VIR_SYSFS_VALUE_MAXLEN, value) < 0)
         goto cleanup;
 
+    virStringTrimOptionalNewline(*value);
+
     ret = 0;
  cleanup:
     VIR_FREE(path);