Switch to common warning()/error() for cmds-device.c.

Signed-off-by: Zhao Lei <zhao...@cn.fujitsu.com>
---
 cmds-device.c | 57 +++++++++++++++++++++++----------------------------------
 1 file changed, 23 insertions(+), 34 deletions(-)

diff --git a/cmds-device.c b/cmds-device.c
index 2ed32a2..e23ea61 100644
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -102,7 +102,7 @@ static int cmd_device_add(int argc, char **argv)
 
                devfd = open(argv[i], O_RDWR);
                if (devfd < 0) {
-                       fprintf(stderr, "ERROR: Unable to open device '%s'\n", 
argv[i]);
+                       error("Unable to open device '%s'", argv[i]);
                        ret++;
                        continue;
                }
@@ -117,9 +117,8 @@ static int cmd_device_add(int argc, char **argv)
 
                path = canonicalize_path(argv[i]);
                if (!path) {
-                       fprintf(stderr,
-                               "ERROR: Could not canonicalize pathname '%s': 
%s\n",
-                               argv[i], strerror(errno));
+                       error("Could not canonicalize pathname '%s': %s",
+                             argv[i], strerror(errno));
                        ret++;
                        goto error_out;
                }
@@ -129,8 +128,8 @@ static int cmd_device_add(int argc, char **argv)
                res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
                e = errno;
                if (res < 0) {
-                       fprintf(stderr, "ERROR: error adding the device '%s' - 
%s\n",
-                               path, strerror(e));
+                       error("error adding the device '%s' - %s",
+                             path, strerror(e));
                        ret++;
                }
                free(path);
@@ -162,8 +161,7 @@ static int _cmd_device_remove(int argc, char **argv,
                int     res;
 
                if (is_block_device(argv[i]) != 1) {
-                       fprintf(stderr,
-                               "ERROR: %s is not a block device\n", argv[i]);
+                       error("%s is not a block device", argv[i]);
                        ret++;
                        continue;
                }
@@ -178,9 +176,8 @@ static int _cmd_device_remove(int argc, char **argv,
                                msg = btrfs_err_str(res);
                        else
                                msg = strerror(e);
-                       fprintf(stderr,
-                               "ERROR: error removing the device '%s' - %s\n",
-                               argv[i], msg);
+                       error("error removing the device '%s' - %s",
+                             argv[i], msg);
                        ret++;
                }
        }
@@ -251,11 +248,9 @@ static int cmd_device_scan(int argc, char **argv)
        if (all || argc == 1) {
                printf("Scanning for Btrfs filesystems\n");
                ret = btrfs_scan_lblkid();
-               if (ret)
-                       fprintf(stderr, "ERROR: error %d while scanning\n", 
ret);
+               error_on(ret, "error %d while scanning", ret);
                ret = btrfs_register_all_devices();
-               if (ret)
-                       fprintf(stderr, "ERROR: error %d while registering\n", 
ret);
+               error_on(ret, "error %d while registering", ret);
                goto out;
        }
 
@@ -263,16 +258,14 @@ static int cmd_device_scan(int argc, char **argv)
                char *path;
 
                if (is_block_device(argv[i]) != 1) {
-                       fprintf(stderr,
-                               "ERROR: %s is not a block device\n", argv[i]);
+                       error("%s is not a block device", argv[i]);
                        ret = 1;
                        goto out;
                }
                path = canonicalize_path(argv[i]);
                if (!path) {
-                       fprintf(stderr,
-                               "ERROR: Could not canonicalize path '%s': %s\n",
-                               argv[i], strerror(errno));
+                       error("Could not canonicalize path '%s': %s",
+                             argv[i], strerror(errno));
                        ret = 1;
                        goto out;
                }
@@ -313,16 +306,14 @@ static int cmd_device_ready(int argc, char **argv)
 
        path = canonicalize_path(argv[argc - 1]);
        if (!path) {
-               fprintf(stderr,
-                       "ERROR: Could not canonicalize pathname '%s': %s\n",
-                       argv[argc - 1], strerror(errno));
+               error("Could not canonicalize pathname '%s': %s",
+                     argv[argc - 1], strerror(errno));
                ret = 1;
                goto out;
        }
 
        if (is_block_device(path) != 1) {
-               fprintf(stderr,
-                       "ERROR: %s is not a block device\n", path);
+               error("%s is not a block device", path);
                ret = 1;
                goto out;
        }
@@ -331,9 +322,8 @@ static int cmd_device_ready(int argc, char **argv)
        strncpy_null(args.name, path);
        ret = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args);
        if (ret < 0) {
-               fprintf(stderr, "ERROR: unable to determine if the device '%s'"
-                       " is ready for mounting - %s\n", path,
-                       strerror(errno));
+               error("unable to determine if the device '%s' is ready for 
mounting - %s",
+                     path, strerror(errno));
                ret = 1;
        }
 
@@ -388,13 +378,13 @@ static int cmd_device_stats(int argc, char **argv)
 
        ret = get_fs_info(dev_path, &fi_args, &di_args);
        if (ret) {
-               fprintf(stderr, "ERROR: getting dev info for devstats failed: "
-                               "%s\n", strerror(-ret));
+               error("getting dev info for devstats failed: %s",
+                     strerror(-ret));
                err = 1;
                goto out;
        }
        if (!fi_args.num_devices) {
-               fprintf(stderr, "ERROR: no devices found\n");
+               error("no devices found");
                err = 1;
                goto out;
        }
@@ -412,9 +402,8 @@ static int cmd_device_stats(int argc, char **argv)
                args.flags = flags;
 
                if (ioctl(fdmnt, BTRFS_IOC_GET_DEV_STATS, &args) < 0) {
-                       fprintf(stderr,
-                               "ERROR: ioctl(BTRFS_IOC_GET_DEV_STATS) on %s 
failed: %s\n",
-                               path, strerror(errno));
+                       error("ioctl(BTRFS_IOC_GET_DEV_STATS) on %s failed: %s",
+                             path, strerror(errno));
                        err = 1;
                } else {
                        char *canonical_path;
-- 
1.8.5.1

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