| /* Stub for ldd script to print Linux libc4 dependencies. |
| Copyright (C) 1998-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* This code is based on the `ldd' program code from the Linux ld.so |
| package. */ |
| |
| #include <a.out.h> |
| #include <errno.h> |
| #include <error.h> |
| #include <libintl.h> |
| #include <locale.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| /* Get libc version number. */ |
| #include "../version.h" |
| |
| #define PACKAGE _libc_intl_domainname |
| |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| const char *filename; |
| size_t filename_len; |
| struct exec exec; |
| char *buf; |
| FILE *fp; |
| |
| /* Set locale via LC_ALL. */ |
| setlocale (LC_ALL, ""); |
| |
| /* Set the text message domain. */ |
| textdomain (PACKAGE); |
| |
| /* We expect exactly one argument. */ |
| if (argc != 2) |
| return 1; |
| |
| if (strcmp (argv[1], "--help") == 0) |
| { |
| printf (gettext ("Usage: lddlibc4 FILE\n\n")); |
| printf (gettext ("For bug reporting instructions, please see:\n\ |
| %s.\n"), REPORT_BUGS_TO); |
| return 0; |
| } |
| else if (strcmp (argv[1], "--version") == 0) |
| { |
| printf ("lddlibc4 %s%s\n", PKGVERSION, VERSION); |
| printf (gettext ("\ |
| Copyright (C) %s Free Software Foundation, Inc.\n\ |
| This is free software; see the source for copying conditions. There is NO\n\ |
| warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ |
| "), "2009"); |
| return 0; |
| } |
| |
| filename = argv[1]; |
| |
| /* First see whether this is really an a.out binary. */ |
| fp = fopen (filename, "rb"); |
| if (fp == NULL) |
| error (2, errno, gettext ("cannot open `%s'"), filename); |
| |
| /* Read the program header. */ |
| if (fread (&exec, sizeof exec, 1, fp) < 1) |
| error (2, errno, gettext ("cannot read header from `%s'"), filename); |
| |
| /* Test for the magic numbers. */ |
| if (N_MAGIC (exec) != ZMAGIC && N_MAGIC (exec) != QMAGIC |
| && N_MAGIC (exec) != OMAGIC) |
| exit (3); |
| |
| /* We don't need the file open anymore. */ |
| fclose (fp); |
| |
| /* We must put `__LDD_ARGV0=<program-name>' in the environment. */ |
| filename_len = strlen (filename); |
| buf = (char *) alloca (sizeof "__LDD_ARGV0=" + filename_len); |
| mempcpy (mempcpy (buf, "__LDD_ARGV0=", sizeof "__LDD_ARGV0=" - 1), |
| filename, filename_len + 1); |
| /* ...and put the value in the environment. */ |
| putenv (buf); |
| |
| /* Now we can execute the binary. */ |
| return execv (filename, &argv[argc]) ? 4 : 0; |
| } |