Do not print error when rport is blocked

[multipath-tools/.git] / libmultipath / sysfs.c

diff --git a/libmultipath/sysfs.c b/libmultipath/sysfs.c
index bab3837..0670e0a 100644 (file)
--- a/libmultipath/sysfs.c
+++ b/libmultipath/sysfs.c
@@ -59,19 +59,19 @@ ssize_t sysfs_attr_get_value(struct udev_device *dev, const char *attr_name,
        condlog(4, "open '%s'", devpath);
        if (stat(devpath, &statbuf) != 0) {
                condlog(4, "stat '%s' failed: %s", devpath, strerror(errno));
-               return 0;
+               return -errno;
        }
 
        /* skip directories */
        if (S_ISDIR(statbuf.st_mode)) {
                condlog(4, "%s is a directory", devpath);
-               return 0;
+               return -EISDIR;
        }
 
        /* skip non-writeable files */
        if ((statbuf.st_mode & S_IRUSR) == 0) {
                condlog(4, "%s is not readable", devpath);
-               return 0;
+               return -EPERM;
        }
 
        /* read attribute value */
@@ -79,12 +79,12 @@ ssize_t sysfs_attr_get_value(struct udev_device *dev, const char *attr_name,
        if (fd < 0) {
                condlog(4, "attribute '%s' can not be opened: %s",
                        devpath, strerror(errno));
-               return 0;
+               return -errno;
        }
        size = read(fd, value, value_len);
        if (size < 0) {
                condlog(4, "read from %s failed: %s", devpath, strerror(errno));
-               size = 0;
+               size = -errno;
        } else if (size == value_len) {
                condlog(4, "overflow while reading from %s", devpath);
                size = 0;
@@ -110,19 +110,19 @@ ssize_t sysfs_attr_set_value(struct udev_device *dev, const char *attr_name,
        condlog(4, "open '%s'", devpath);
        if (stat(devpath, &statbuf) != 0) {
                condlog(4, "stat '%s' failed: %s", devpath, strerror(errno));
-               return 0;
+               return -errno;
        }
 
        /* skip directories */
        if (S_ISDIR(statbuf.st_mode)) {
                condlog(4, "%s is a directory", devpath);
-               return 0;
+               return -EISDIR;
        }
 
        /* skip non-writeable files */
        if ((statbuf.st_mode & S_IWUSR) == 0) {
                condlog(4, "%s is not writeable", devpath);
-               return 0;
+               return -EPERM;
        }
 
        /* write attribute value */
@@ -130,12 +130,12 @@ ssize_t sysfs_attr_set_value(struct udev_device *dev, const char *attr_name,
        if (fd < 0) {
                condlog(4, "attribute '%s' can not be opened: %s",
                        devpath, strerror(errno));
-               return 0;
+               return -errno;
        }
        size = write(fd, value, value_len);
        if (size < 0) {
                condlog(4, "write to %s failed: %s", devpath, strerror(errno));
-               size = 0;
+               size = -errno;
        } else if (size < value_len) {
                condlog(4, "tried to write %ld to %s. Wrote %ld",
                        (long)value_len, devpath, (long)size);