posix/tst-execlp2.c

   1 #include <errno.h>
   2 #include <libgen.h>
   3 #undef basename
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <unistd.h>
   8 #include <sys/stat.h>
   9
  10
  11 static void prepare (int argc, char *argv[]);
  12 static int do_test (void);
  13 #define PREPARE(argc, argv) prepare (argc, argv)
  14 #define TEST_FUNCTION do_test ()
  15 #include "../test-skeleton.c"
  16
  17
  18 static char *copy;
  19
  20 static void
  21 prepare (int argc, char *argv[])
  22 {
  23   char *buf;
  24   int off;
  25
  26   buf = xasprintf ("cp %s %n%s-copy", argv[0], &off, argv[0]);
  27   if (system (buf) != 0)
  28     {
  29       puts ("system  failed");
  30       exit (1);
  31     }
  32
  33   /* Make it not executable.  */
  34   copy = buf + off;
  35   if (chmod (copy, 0666) != 0)
  36     {
  37       puts ("chmod  failed");
  38       exit (1);
  39     }
  40
  41   add_temp_file (copy);
  42 }
  43
  44
  45 static int
  46 do_test (void)
  47 {
  48   /* Make sure we do not find a binary with the name we are going to
  49      use.  */
  50   char *bindir = strdupa (copy);
  51   bindir = canonicalize_file_name (dirname (bindir));
  52   if (bindir == NULL)
  53     {
  54       puts ("canonicalize_file_name failed");
  55       return 1;
  56     }
  57
  58   char *path = xasprintf ("%s:../libio:../elf", bindir);
  59
  60   setenv ("PATH", path, 1);
  61
  62   char *prog = basename (copy);
  63   errno = 0;
  64   execlp (prog, prog, NULL);
  65
  66   if (errno != EACCES)
  67     {
  68       printf ("errno = %d (%m), expected EACCES\n", errno);
  69       return 1;
  70     }
  71
  72   return 0;
  73 }