cksum, printenv: report errors via exitcode

function                                             old     new   delta
cksum_main                                           296     315     +19
printenv_main                                         74      86     +12

1 files changed, 5 insertions, 2 deletions

diff --git a/coreutils/cksum.c b/coreutils/cksum.c
index 546532c3c..3a77c753a 100644
--- a/coreutils/cksum.c
+++ b/coreutils/cksum.c
@@ -15,6 +15,7 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
         uint32_t crc;
         off_t length, filesize;
         int bytes_read;
+        int exit_code = EXIT_SUCCESS;
         uint8_t *cp;
 
 #if ENABLE_DESKTOP
@@ -27,8 +28,10 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
         do {
                 int fd = open_or_warn_stdin(*argv ? *argv : bb_msg_standard_input);
 
-                if (fd < 0)
+                if (fd < 0) {
+                        exit_code = EXIT_FAILURE;
                         continue;
+                }
                 crc = 0;
                 length = 0;
 
@@ -60,5 +63,5 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
                                 crc, filesize, *argv);
         } while (*argv && *++argv);
 
-        fflush_stdout_and_exit(EXIT_SUCCESS);
+        fflush_stdout_and_exit(exit_code);
 }