view toys/pending/chcon.c @ 1603:51b7d1af353b draft

here's a patch that should let us replace toolbox's chcon. (it also adds a feature, -R, because toybox makes that so easy.) you'll probably want fancier configuration here because although the --as-needed works okay, a typical Ubuntu box will have the .so but not the .h files. i did consider adding a toys/selinux/ directory, but given that existing tools like ls and id will want -Z SELinux options, i wasn't sure whether you'd think it was worth segregating the SELinux-only toys. note that this won't help the tizen smack users (and patch for smack won't help SELinux users). so you might want to think about where you'd like us to be aiming: #if USE_SELINUX/USE_SMACK in all the relevant places, or a toys/selinux and a toys/smack (though we'd still need #if in at least ls and id), or a lib/security.c that concentrates all the differences into one file?
author Elliott Hughes <enh@google.com>
date Thu, 11 Dec 2014 20:17:28 -0600
parents
children b84024067049
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/* chcon.c - Change file security context
 *
 * Copyright 2014 The Android Open Source Project

USE_CHCON(NEWTOY(chcon, "hRv", TOYFLAG_USR|TOYFLAG_BIN))

config CHCON
  bool "chcon"
  default n
  help
    usage: chcon [-hRv] CONTEXT FILE...

    Change the SELinux security context of listed file[s] (recursively with -R).

    -h change symlinks instead of what they point to.
    -R recurse into subdirectories.
    -v verbose output.
*/

#define FOR_chcon
#include "toys.h"
#include <selinux/selinux.h>

GLOBALS(
  char *context;
)

int do_chcon(struct dirtree *try)
{
  int ret;

  if (!dirtree_notdotdot(try)) return 0;

  char *path = dirtree_path(try, 0);
  if (toys.optflags & FLAG_v)
    printf("chcon '%s' to %s\n", path, TT.context);
  ret = ((toys.optflags&FLAG_h) ? lsetfilecon : setfilecon)(path, TT.context);
  if (ret == -1)
    perror_msg("'%s' to %s", path, TT.context);
  free(path);

  return (toys.optflags & FLAG_R) ? DIRTREE_RECURSE : 0;
}

void chcon_main(void)
{
  TT.context = *toys.optargs;
  char **file;

  for (file = toys.optargs+1; *file; file++) dirtree_read(*file, do_chcon);
}