diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/lddlibc4.c')
-rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/lddlibc4.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/lddlibc4.c b/REORG.TODO/sysdeps/unix/sysv/linux/lddlibc4.c new file mode 100644 index 0000000000..25c4cb960a --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/lddlibc4.c @@ -0,0 +1,105 @@ +/* Stub for ldd script to print Linux libc4 dependencies. + Copyright (C) 1998-2017 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\ +"), "2017"); + 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; +} |