Revert "libc: Constify the getcap API"

This broke cross-building on Linux and macOS.

This reverts commit 823d00b2d4.

contrib/ncurses/include/ncurses_defs

@@ -34,7 +34,7 @@
 
 BROKEN_LINKER
 BSD_TPUTS
-CGETENT_CONST	const
+CGETENT_CONST	/* nothing */
 CPP_HAS_PARAM_INIT
 CURSES_ACS_ARRAY	acs_map
 CURSES_WACS_ARRAY	_nc_wacs

contrib/telnet/libtelnet/getent.c

@@ -39,17 +39,17 @@ static char sccsid[] = "@(#)getent.c	8.2 (Berkeley) 12/15/93";
 #include "misc-proto.h"
 
 static char *area;
-static const char * const dba[] = { "/etc/gettytab", NULL };
+static char gettytab[] = "/etc/gettytab";
 
 /*ARGSUSED*/
 int
 getent(char *cp __unused, const char *name)
 {
 	int retval;
-	char *tempnam;
+	char *tempnam, *dba[2] = { gettytab, NULL };
 
 	tempnam = strdup(name);
-	retval = cgetent(&area, dba, tempnam) == 0 ? 1 : 0;
+	retval =  cgetent(&area, dba, tempnam) == 0 ? 1 : 0;
 	free(tempnam);
 	return(retval);
 }

include/stdlib.h

@@ -279,10 +279,10 @@ char	*getbsize(int *, long *);
 					/* getcap(3) functions */
 char	*cgetcap(char *, const char *, int);
 int	 cgetclose(void);
-int	 cgetent(char **, const char * const *, const char *);
+int	 cgetent(char **, char **, const char *);
-int	 cgetfirst(char **, const char * const *);
+int	 cgetfirst(char **, char **);
 int	 cgetmatch(const char *, const char *);
-int	 cgetnext(char **, const char * const *);
+int	 cgetnext(char **, char **);
 int	 cgetnum(char *, const char *, long *);
 int	 cgetset(const char *);
 int	 cgetstr(char *, const char *, char **);

lib/libc/gen/disklabel.c

@@ -54,8 +54,6 @@ gettype(char *t, const char **names)
 	return (0);
 }
 
-static const char *db_array[] = { _PATH_DISKTAB, NULL };
-
 struct disklabel *
 getdiskbyname(const char *name)
 {
@@ -63,12 +61,13 @@ getdiskbyname(const char *name)
 	struct	disklabel *dp = &disk;
 	struct partition *pp;
 	char	*buf;
+	char  	*db_array[2] = { _PATH_DISKTAB, 0 };
 	char	*cp, *cq;	/* can't be register */
 	char	p, max, psize[3], pbsize[3],
 		pfsize[3], poffset[3], ptype[3];
 	u_int32_t *dx;
 
-	if (cgetent(&buf, db_array, name) < 0)
+	if (cgetent(&buf, db_array, (char *) name) < 0)
 		return NULL;
 
 	bzero((char *)&disk, sizeof(disk));

lib/libc/gen/getcap.3

@@ -28,7 +28,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd May 26, 2026
+.Dd March 22, 2002
 .Dt GETCAP 3
 .Os
 .Sh NAME
@@ -48,7 +48,7 @@
 .Sh SYNOPSIS
 .In stdlib.h
 .Ft int
-.Fn cgetent "char **buf" "const char * const *db_array" "const char *name"
+.Fn cgetent "char **buf" "char **db_array" "const char *name"
 .Ft int
 .Fn cgetset "const char *ent"
 .Ft int
@@ -62,9 +62,9 @@
 .Ft int
 .Fn cgetustr "char *buf" "const char *cap" "char **str"
 .Ft int
-.Fn cgetfirst "char **buf" "const char * const *db_array"
+.Fn cgetfirst "char **buf" "char **db_array"
 .Ft int
-.Fn cgetnext "char **buf" "const char * const *db_array"
+.Fn cgetnext "char **buf" "char **db_array"
 .Ft int
 .Fn cgetclose "void"
 .Sh DESCRIPTION

lib/libc/gen/getcap.c

@@ -62,8 +62,7 @@ static char	*toprec;	/* Additional record specified by cgetset() */
 static int	 gottoprec;	/* Flag indicating retrieval of toprecord */
 
 static int	cdbget(DB *, char **, const char *);
-static int 	getent(char **, u_int *, const char * const *, int,
+static int 	getent(char **, u_int *, char **, int, const char *, int, char *);
-    const char *, int, char *);
 static int	nfcmp(char *, char *);
 
 /*
@@ -155,7 +154,7 @@ cgetcap(char *buf, const char *cap, int type)
  * reference loop is detected.
  */
 int
-cgetent(char **buf, const char * const *db_array, const char *name)
+cgetent(char **buf, char **db_array, const char *name)
 {
 	u_int dummy;
 
@@ -181,12 +180,11 @@ cgetent(char **buf, const char * const *db_array, const char *name)
  *	  MAX_RECURSION.
  */
 static int
-getent(char **cap, u_int *len, const char * const *db_array, int fd,
+getent(char **cap, u_int *len, char **db_array, int fd, const char *name,
-    const char *name, int depth, char *nfield)
+    int depth, char *nfield)
 {
 	DB *capdbp;
-	const char * const *db_p;
+	char *r_end, *rp, **db_p;
-	char *r_end, *rp;
 	int myfd, eof, foundit, retval;
 	char *record, *cbuf;
 	int tc_not_resolved;
@@ -613,7 +611,7 @@ cgetmatch(const char *buf, const char *name)
 
 
 int
-cgetfirst(char **buf, const char * const *db_array)
+cgetfirst(char **buf, char **db_array)
 {
 	(void)cgetclose();
 	return (cgetnext(buf, db_array));
@@ -621,7 +619,7 @@ cgetfirst(char **buf, const char * const *db_array)
 
 static FILE *pfp;
 static int slash;
-static const char * const *dbp;
+static char **dbp;
 
 int
 cgetclose(void)
@@ -642,7 +640,7 @@ cgetclose(void)
  * upon returning an entry with more remaining, and -1 if an error occurs.
  */
 int
-cgetnext(char **bp, const char * const *db_array)
+cgetnext(char **bp, char **db_array)
 {
 	size_t len;
 	int done, hadreaderr, savederrno, status;

lib/libutil/login_cap.c

@@ -299,7 +299,8 @@ login_getclassbyname(char const *name, const struct passwd *pwd)
 	const char  *msg = NULL;
 	const char  *dir;
 	char	    userpath[MAXPATHLEN];
-	const char *login_dbarray[] = { NULL, NULL, NULL };
+
+	static char *login_dbarray[] = { NULL, NULL, NULL };
 
 	me = (name != NULL && strcmp(name, LOGIN_MECLASS) == 0);
 	dir = (!me || pwd == NULL) ? NULL : pwd->pw_dir;

libexec/getty/subr.c

@@ -54,7 +54,6 @@
 void
 gettable(const char *name)
 {
-	static const char *dba[2] = { _PATH_GETTYTAB, NULL };
 	char *buf = NULL;
 	struct gettystrs *sp;
 	struct gettynums *np;
@@ -62,9 +61,15 @@ gettable(const char *name)
 	long n;
 	int l;
 	char *p;
+	static char path_gettytab[PATH_MAX];
+	char *dba[2];
 
 	static int firsttime = 1;
 
+	strlcpy(path_gettytab, _PATH_GETTYTAB, sizeof(path_gettytab));
+	dba[0] = path_gettytab;
+	dba[1] = NULL;
+
 	if (firsttime) {
 		/*
 		 * we need to strdup() anything in the strings array

usr.bin/cap_mkdb/cap_mkdb.c

@@ -40,7 +40,7 @@
 #include <string.h>
 #include <unistd.h>
 
-static void	 db_build(const char * const *);
+static void	 db_build(char **);
 static void	 dounlink(void);
 static void	 usage(void);
 
@@ -113,7 +113,7 @@ main(int argc, char *argv[])
 	if (atexit(dounlink))
 		err(1, "atexit");
 
-	db_build((const char * const *)argv);
+	db_build(argv);
 
 	if (capdbp->close(capdbp) < 0)
 		err(1, "%s", capname);
@@ -142,7 +142,7 @@ dounlink(void)
  * details above.
  */
 static void
-db_build(const char * const *ifiles)
+db_build(char **ifiles)
 {
 	DBT key, data;
 	recno_t reccnt;

usr.bin/tip/tip/remote.c

@@ -53,7 +53,7 @@ static char *capstrings[] = {
 	"di", "es", "ex", "fo", "rc", "re", "pa", 0
 };
 
-static const char *db_array[] = { _PATH_REMOTE, NULL, NULL };
+static char	*db_array[3] = { _PATH_REMOTE, 0, 0 };
 
 #define cgetflag(f)	(cgetcap(bp, f, ':') != NULL)
 

usr.sbin/lpr/common_source/printcap.c

@@ -54,7 +54,7 @@
 /*
  * Routines and data used in processing the printcap file.
  */
-static const char *printcapdb[] = { _PATH_PRINTCAP, NULL };
+static char	*printcapdb[] = { __DECONST(char *, _PATH_PRINTCAP), NULL };
 
 static char 	*capdb_canonical_name(const char *_bp);
 static int	 capdb_getaltlog(char *_bp, const char *_shrt,