Blame posix/tst-execvp2.c

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#include <errno.h>
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#include <libgen.h>
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#undef basename
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/stat.h>
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static void prepare (int argc, char *argv[]);
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static int do_test (void);
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#define PREPARE(argc, argv) prepare (argc, argv)
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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#ifndef EXECVP
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# define EXECVP(file, argv)  execvp (file, argv)
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#endif
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static char *copy;
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static void
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prepare (int argc, char *argv[])
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{
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  char *buf;
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  int off;
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  asprintf (&buf, "cp %s %n%s-copy", argv[0], &off, argv[0]);
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  if (buf == NULL)
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    {
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      puts ("asprintf  failed");
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      exit (1);
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    }
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  if (system (buf) != 0)
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    {
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      puts ("system  failed");
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      exit (1);
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    }
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  /* Make it not executable.  */
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  copy = buf + off;
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  if (chmod (copy, 0666) != 0)
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    {
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      puts ("chmod  failed");
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      exit (1);
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    }
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  add_temp_file (copy);
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}
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static int
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do_test (void)
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{
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  /* Make sure we do not find a binary with the name we are going to
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     use.  */
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  char *bindir = strdupa (copy);
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  bindir = canonicalize_file_name (dirname (bindir));
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  if (bindir == NULL)
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    {
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      puts ("canonicalize_file_name failed");
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      return 1;
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    }
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  char *path;
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  asprintf (&path, "%s:../libio:../elf", bindir);
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  if (path == NULL)
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    {
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      puts ("asprintf  failed");
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      return 1;
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    }
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  setenv ("PATH", path, 1);
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  char *argv[] = { basename (copy), NULL };
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  errno = 0;
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  EXECVP (argv[0], argv);
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  if (errno != EACCES)
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    {
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      printf ("errno = %d (%m), expected EACCES\n", errno);
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      return 1;
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    }
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  return 0;
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}