printenv: Correct out-of-memory condition check.

In common/cmd_nvedit.c, en env_print(), the wrong type is used for len.
hexport_r() returns -1 on error (like OOM), which is converted to
0xffffffff when put in an unsigned. Said value is obviously bigger then
0, and as a result an uninitialized string is then displayed. Other
usages of hexport_r() in the code correctly uses ssize_t to keep its
return value.

Signed-off-by: Maxime Larocque <maxmtl2002@yahoo.ca>

diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index afa128e..68b0f4f 100644 (file)
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -96,7 +96,7 @@ int get_env_id(void)
 static int env_print(char *name, int flag)
 {
        char *res = NULL;
-       size_t len;
+       ssize_t len;
 
        if (name) {             /* print a single name */
                ENTRY e, *ep;
@@ -120,6 +120,7 @@ static int env_print(char *name, int flag)
        }
 
        /* should never happen */
+       printf("## Error: cannot export environment\n");
        return 0;
 }