Perform more C warning fixup on all C source files and headers.

winsup/testsuite/libltp/lib/libtestsuite.c

@@ -29,10 +29,6 @@
  *	my_getpwnam(), do_file_setup()
  *
  */
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
 #include <pwd.h>
 #include <errno.h>
 #include <fcntl.h>

winsup/testsuite/libltp/lib/parse_opts.c

@@ -69,12 +69,10 @@
  * 
  *#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/
 #include <errno.h>
-#include <stdlib.h>
 #include <string.h>
 #include <sys/param.h>
 #include <sys/signal.h>
 #include <sys/types.h>
-#include <unistd.h>
 #include <sys/time.h>
 
 #ifdef __CYGWIN__

winsup/testsuite/libltp/lib/search_path.c

@@ -101,7 +101,7 @@ char **argv;
  */
 int
 search_path(cmd, res_path, access_mode, fullpath)
-char *cmd;	/* The requested filename */
+const char *cmd;	/* The requested filename */
 char *res_path; /* The resulting path or error mesg */
 int access_mode; /* the mode used by access(2) */
 int fullpath;	/* if set, cwd will be prepended to all non-full paths */

winsup/testsuite/libltp/lib/tst_res.c

@@ -106,11 +106,7 @@
  *
  *#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/
 #include <errno.h>
-#include <string.h>
-#include <stdio.h>         /* for I/O functions, BUFSIZ */
-#include <stdlib.h>        /* for getenv() */
 #include <stdarg.h>        /* for varargs stuff */
-#include <unistd.h>        /* for access() */
 #include "test.h"          /* for output display mode & result type */
                            /* defines */
 
@@ -154,14 +150,14 @@
 static void check_env();
 static void tst_condense(int tnum, int ttype, char *tmesg);
 static void tst_print(char *tcid, int tnum, int trange, int ttype, const char *tmesg);
-static void cat_file(char *filename);
+static void cat_file(const char *filename);
 
 
 /*
  * Define some static/global variables.
  */
 static FILE *T_out = NULL;    /* tst_res() output file descriptor */
-static char *File;            /* file whose contents is part of result */
+static const char *File;      /* file whose contents is part of result */
 static int  T_exitval = 0;    /* exit value used by tst_exit() */
 static int  T_mode = VERBOSE; /* flag indicating print mode: VERBOSE, */
                               /* CONDENSE, NOPASS, DISCARD */
@@ -216,7 +212,7 @@ char *TESTDIR = NULL;
  *             eventually get here to print the results.
  */
 void
-tst_res(int ttype, char *fname, const char *arg_fmt, ...)
+tst_res(int ttype, const char *fname, const char *arg_fmt, ...)
 {
    int  i;
    char tmesg[USERMESG];     /* expanded message */
@@ -329,7 +325,7 @@ tst_res(int ttype, char *fname, const char *arg_fmt, ...)
 static void
 tst_condense(int tnum, int ttype, char *tmesg)
 {
-   char *file;
+   const char *file;
 
 #if DEBUG
    printf("IN tst_condense: tcid = %s, tnum = %d, ttype = %d, tmesg = %s\n",
@@ -802,7 +798,7 @@ tst_brkloopm(int ttype, void (*func)(), const char *arg_fmt, ...)
  * cat_file() - Print the contents of a file to standard out.
  */
 static void
-cat_file(char *filename)
+cat_file(const char *filename)
 {
    FILE *fp;                  /* file pointer */
    int  b_read;               /* number of bytes read with read() */

winsup/testsuite/libltp/lib/tst_tmpdir.c

@@ -63,11 +63,7 @@
  *      Neither tst_tmpdir() or tst_rmdir() has a return value.
  *
  *#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/
-#include <stdio.h>
 #include <errno.h>
-#include <stdlib.h>        /* for getenv() */
-#include <string.h>        /* for string functions */
-#include <unistd.h>        /* for sysconf(), getcwd(), rmdir() */
 #include <sys/types.h>     /* for mkdir() */
 #include <sys/stat.h>      /* for mkdir() */
 #include "test.h"