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| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/lddlibc4.c | 87 |
2 files changed, 91 insertions, 0 deletions
@@ -1,3 +1,7 @@ +1998-03-26 18:50 Ulrich Drepper <drepper@cygnus.com> + + * sysdeps/unix/sysv/linux/lddlibc4.c: New file. + 1998-03-26 Andreas Jaeger <aj@arthur.rhein-neckar.de> * manual/install.texi (Supported Configurations): Add diff --git a/sysdeps/unix/sysv/linux/lddlibc4.c b/sysdeps/unix/sysv/linux/lddlibc4.c new file mode 100644 index 0000000000..9de3dc8738 --- /dev/null +++ b/sysdeps/unix/sysv/linux/lddlibc4.c @@ -0,0 +1,87 @@ +/* Stub for ldd script to print Linux libc4 dependencies. + Copyright (C) 1998 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* This code is based on the `ldd' program code from the Linux ld.so + package. */ + +#include <a.out.h> +#include <errno.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; + + 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); + /* ...and put the value in the environment. */ + putenv (buf); + + /* Now we can execute the binary. */ + return execl (filename, NULL) ? 4 : 0; +} |