Both major(3) and minor(3) return an 'unsigned int',
so there is no need to use a 'long' for printing.
Moreover, it should have been 'unsigned long',
as "%lx" expects an unsigned type.

Signed-off-by: Alejandro Colomar <colomar.6....@gmail.com>
---
 man2/ioctl_ns.2 | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/man2/ioctl_ns.2 b/man2/ioctl_ns.2
index 818dde32c..bf832a2c7 100644
--- a/man2/ioctl_ns.2
+++ b/man2/ioctl_ns.2
@@ -316,9 +316,8 @@ main(int argc, char *argv[])
             exit(EXIT_FAILURE);
         }
         printf("Device/Inode of owning user namespace is: "
-                "[%lx,%lx] / %ld\en",
-                (long) major(sb.st_dev), (long) minor(sb.st_dev),
-                (long) sb.st_ino);
+                "[%x,%x] / %ld\en",
+                major(sb.st_dev), minor(sb.st_dev), (long) sb.st_ino);
 
         close(userns_fd);
     }
@@ -345,9 +344,8 @@ main(int argc, char *argv[])
             perror("fstat\-parentns");
             exit(EXIT_FAILURE);
         }
-        printf("Device/Inode of parent namespace is: [%lx,%lx] / %ld\en",
-                (long) major(sb.st_dev), (long) minor(sb.st_dev),
-                (long) sb.st_ino);
+        printf("Device/Inode of parent namespace is: [%x,%x] / %ld\en",
+                major(sb.st_dev), minor(sb.st_dev), (long) sb.st_ino);
 
         close(parent_fd);
     }
-- 
2.28.0

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