btrfs-progs: prop: convert error messages to use error()

props.c uses 'fprintf(stderr, "ERROR: ...")' as its error messages,
however we have generic error() function.

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/props.c b/props.c
index 5b74932..a7e3e96 100644 (file)
--- a/props.c
+++ b/props.c
@@ -48,16 +48,15 @@ static int prop_read_only(enum prop_object_type type,
        fd = open(object, O_RDONLY);
        if (fd < 0) {
                ret = -errno;
-               fprintf(stderr, "ERROR: open %s failed. %s\n",
-                               object, strerror(-ret));
+               error("failed to open %s: %s", object, strerror(-ret));
                goto out;
        }
 
        ret = ioctl(fd, BTRFS_IOC_SUBVOL_GETFLAGS, &flags);
        if (ret < 0) {
                ret = -errno;
-               fprintf(stderr, "ERROR: failed to get flags for %s. %s\n",
-                               object, strerror(-ret));
+               error("failed to get flags for %s: %s", object,
+                               strerror(-ret));
                goto out;
        }
 
@@ -76,15 +75,15 @@ static int prop_read_only(enum prop_object_type type,
                flags = flags & ~BTRFS_SUBVOL_RDONLY;
        } else {
                ret = -EINVAL;
-               fprintf(stderr, "ERROR: invalid value for property.\n");
+               error("invalid value for property: %s", value);
                goto out;
        }
 
        ret = ioctl(fd, BTRFS_IOC_SUBVOL_SETFLAGS, &flags);
        if (ret < 0) {
                ret = -errno;
-               fprintf(stderr, "ERROR: failed to set flags for %s. %s\n",
-                               object, strerror(-ret));
+               error("failed to set flags for %s: %s", object,
+                               strerror(-ret));
                goto out;
        }
 
@@ -130,8 +129,7 @@ static int prop_compression(enum prop_object_type type,
        fd = open_file_or_dir3(object, &dirstream, open_flags);
        if (fd == -1) {
                ret = -errno;
-               fprintf(stderr, "ERROR: open %s failed. %s\n",
-                       object, strerror(-ret));
+               error("failed to open %s: %s", object, strerror(-ret));
                goto out;
        }
 
@@ -151,9 +149,8 @@ static int prop_compression(enum prop_object_type type,
        if (sret < 0) {
                ret = -errno;
                if (ret != -ENOATTR)
-                       fprintf(stderr,
-                               "ERROR: failed to %s compression for %s. %s\n",
-                               value ? "set" : "get", object, strerror(-ret));
+                       error("failed to %s compression for %s: %s",
+                             value ? "set" : "get", object, strerror(-ret));
                else
                        ret = 0;
                goto out;
@@ -169,9 +166,8 @@ static int prop_compression(enum prop_object_type type,
                sret = fgetxattr(fd, xattr_name, buf, len);
                if (sret < 0) {
                        ret = -errno;
-                       fprintf(stderr,
-                               "ERROR: failed to get compression for %s. %s\n",
-                               object, strerror(-ret));
+                       error("failed to get compression for %s: %s",
+                             object, strerror(-ret));
                        goto out;
                }
                fprintf(stdout, "compression=%.*s\n", (int)len, buf);