shell/read: check that variable names are sane

function                                             old     new   delta
shell_builtin_read                                  1000    1055     +55
parse_command                                       1460    1463      +3
builtin_umask                                        121     123      +2
is_well_formed_var_name                               73      66      -7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 0 insertions, 10 deletions

diff --git a/shell/hush.c b/shell/hush.c
index bb0ab8408..810009ae8 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -893,16 +893,6 @@ static void cmdedit_update_prompt(void);
 
 /* Utility functions
  */
-static int is_well_formed_var_name(const char *s, char terminator)
-{
-	if (!s || !(isalpha(*s) || *s == '_'))
-		return 0;
-	s++;
-	while (isalnum(*s) || *s == '_')
-		s++;
-	return *s == terminator;
-}
-
 /* Replace each \x with x in place, return ptr past NUL. */
 static char *unbackslash(char *src)
 {