add "const" attribute, where possible

* maint.mk (sc_const_long_option): New rule.  Enforce global change.
* src/base64.c (long_options): Use "const" where possible.
* src/cat.c (main): Likewise.
* src/chcon.c (long_options): Likewise.
* src/chgrp.c (long_options): Likewise.
* src/chmod.c (long_options): Likewise.
* src/chown.c (long_options): Likewise.
* src/comm.c (long_options, OUTPUT_DELIMITER_OPTION): Likewise.
* src/cp.c (long_opts): Likewise.
* src/csplit.c (longopts): Likewise.
* src/cut.c (longopts): Likewise.
* src/date.c (long_options): Likewise.
* src/dd.c (conversions, flags, statuses): Likewise.
* src/df.c (long_options): Likewise.
* src/dircolors.c (long_options): Likewise.
* src/du.c (long_options): Likewise.
* src/env.c (longopts): Likewise.
* src/expand.c (longopts): Likewise.
* src/fmt.c (long_options): Likewise.
* src/fold.c (longopts): Likewise.
* src/groups.c (longopts): Likewise.
* src/head.c (long_options): Likewise.
* src/id.c (longopts): Likewise.
* src/install.c (long_options): Likewise.
* src/join.c (longopts): Likewise.
* src/kill.c (long_options): Likewise.
* src/ln.c (long_options): Likewise.
* src/ls.c (long_time_format, long_options, sort_functions): Likewise.
* src/md5sum.c (long_options): Likewise.
* src/mkdir.c (longopts): Likewise.
* src/mkfifo.c (longopts): Likewise.
* src/mknod.c (longopts): Likewise.
* src/mktemp.c (longopts): Likewise.
* src/mv.c (long_options): Likewise.
* src/nice.c (longopts): Likewise.
* src/nl.c (longopts): Likewise.
* src/od.c (charname, long_options): Likewise.
* src/paste.c (longopts): Likewise.
* src/pathchk.c (longopts): Likewise.
* src/pinky.c (longopts): Likewise.
* src/pr.c (long_options): Likewise.
* src/ptx.c (long_options): Likewise.
* src/readlink.c (longopts): Likewise.
* src/rm.c (long_opts): Likewise.
* src/rmdir.c (longopts): Likewise.
* src/runcon.c (long_options): Likewise.
* src/seq.c (long_options): Likewise.
* src/shred.c (long_opts): Likewise.
* src/shuf.c (long_opts): Likewise.
* src/sort.c (monthtab, long_options): Likewise.
* src/split.c (longopts): Likewise.
* src/stat.c (long_options): Likewise.
* src/stty.c (mode_info, control_info, longopts, set_mode) Likewise.
(set_control_char, speeds): Likewise.
* src/su.c (longopts): Likewise.
* src/sum.c (longopts): Likewise.
* src/tac.c (longopts): Likewise.
* src/tail.c (long_options): Likewise.
* src/tee.c (long_options): Likewise.
* src/timeout.c (long_options): Likewise.
* src/touch.c (longopts): Likewise.
* src/tr.c (long_options): Likewise.
* src/truncate.c (longopts): Likewise.
* src/tty.c (longopts): Likewise.
* src/uname.c (uname_long_options, arch_long_options): Likewise.
* src/unexpand.c (longopts): Likewise.
* src/uniq.c (longopts): Likewise.
* src/wc.c (longopts): Likewise.
* src/who.c (longopts): Likewise.

1 files changed, 8 insertions, 8 deletions

diff --git a/src/stty.c b/src/stty.c
index 004c3186c..548923da4 100644
--- a/src/stty.c
+++ b/src/stty.c
@@ -204,7 +204,7 @@ struct mode_info
     unsigned long mask;		/* Other bits to turn off for this mode.  */
   };
 
-static struct mode_info mode_info[] =
+static const struct mode_info const mode_info[] =
 {
   {"parenb", control, REV, PARENB, 0},
   {"parodd", control, REV, PARODD, 0},
@@ -368,7 +368,7 @@ struct control_info
 
 /* Control characters. */
 
-static struct control_info control_info[] =
+static const struct control_info const control_info[] =
 {
   {"intr", CINTR, VINTR},
   {"quit", CQUIT, VQUIT},
@@ -418,7 +418,7 @@ static char const *visible (cc_t ch);
 static unsigned long int baud_to_value (speed_t speed);
 static bool recover_mode (char const *arg, struct termios *mode);
 static int screen_columns (void);
-static bool set_mode (struct mode_info *info, bool reversed,
+static bool set_mode (struct mode_info const *info, bool reversed,
 		      struct termios *mode);
 static unsigned long int integer_arg (const char *s, unsigned long int max);
 static speed_t string_to_baud (const char *arg);
@@ -432,7 +432,7 @@ static void display_settings (enum output_type output_type,
 static void display_speed (struct termios *mode, bool fancy);
 static void display_window_size (bool fancy, char const *device_name);
 static void sane_mode (struct termios *mode);
-static void set_control_char (struct control_info *info,
+static void set_control_char (struct control_info const *info,
 			      const char *arg,
 			      struct termios *mode);
 static void set_speed (enum speed_setting type, const char *arg,
@@ -445,7 +445,7 @@ static int max_col;
 /* Current position, to know when to wrap. */
 static int current_col;
 
-static struct option longopts[] =
+static const struct option const longopts[] =
 {
   {"all", no_argument, NULL, 'a'},
   {"save", no_argument, NULL, 'g'},
@@ -1061,7 +1061,7 @@ main (int argc, char **argv)
    return true.  */
 
 static bool
-set_mode (struct mode_info *info, bool reversed, struct termios *mode)
+set_mode (struct mode_info const *info, bool reversed, struct termios *mode)
 {
   tcflag_t *bitsp;
 
@@ -1267,7 +1267,7 @@ set_mode (struct mode_info *info, bool reversed, struct termios *mode)
 }
 
 static void
-set_control_char (struct control_info *info, const char *arg,
+set_control_char (struct control_info const *info, const char *arg,
 		  struct termios *mode)
 {
   unsigned long int value;
@@ -1716,7 +1716,7 @@ struct speed_map
   unsigned long int value;	/* Numeric value. */
 };
 
-static struct speed_map speeds[] =
+static const struct speed_map const speeds[] =
 {
   {"0", B0, 0},
   {"50", B50, 50},