Drop tests/ from the debian branchdebian

14 files changed, 0 insertions, 705 deletions

diff --git a/tests/common/Makefile b/tests/common/Makefile
deleted file mode 100644
index 1b14552a..00000000
--- a/tests/common/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-all: rename_failure.so rmdir_failure.so unlink_failure.so
-
-%.so: %.c
-	gcc -W -Wall -pedantic -g $< -shared -ldl -o $@
diff --git a/tests/common/compare_file.pl b/tests/common/compare_file.pl
deleted file mode 100755
index eb498d32..00000000
--- a/tests/common/compare_file.pl
+++ /dev/null
@@ -1,116 +0,0 @@
-#!/usr/bin/perl
-
-open (TEMPLATE, $ARGV[0]) or die "Cannot open '".$ARGV[0]."': $!";
-my $template = join "", <TEMPLATE>;
-open (FILE, $ARGV[1]) or die "Cannot open '".$ARGV[1]."': $!";
-my $file = join "", <FILE>;
-
-my $today = int(time()/(24*3600));
-$template =~ s/\@TODAY\@/$today/g;
-
-my $tmp = $template;
-while ($tmp =~ m/^(.*?)([^\n]*):\@PASS_DES ([^:]*)\@:(.*)$/s) {
-	my $user = $2;
-	my $pass = $3;
-	$tmp = $4;
-	if ($file =~ m/^$user:/m) {
-		$file =~ s/^$user:([^:]*):(.*)$/$user:\@PASS_DES $pass\@:$2/m;
-		my $cryptpass = $1;
-		# Check the password
-		my $checkpass = qx|/usr/bin/openssl passwd -crypt -salt '$cryptpass' $pass 2>tmp/openssl.err|;
-		chomp $checkpass;
-
-		system "cat tmp/openssl.err"
-			if ($checkpass ne $cryptpass);
-		system "rm -f tmp/openssl.err";
-		die "Wrong password for $user: '$cryptpass'. Expected password: '$checkpass'\n"
-			if ($checkpass ne $cryptpass);
-	} else {
-		die "No user '$user' in ".$ARGV[1].".\n";
-	}
-}
-
-$tmp = $template;
-while ($tmp =~ m/^(.*?)([^\n]*):\@PASS_MD5 ([^:]*)\@:(.*)$/s) {
-	my $user = $2;
-	my $pass = $3;
-	$tmp = $4;
-	if ($file =~ m/^$user:/m) {
-		$file =~ s/^$user:([^:]*):(.*)$/$user:\@PASS_MD5 $pass\@:$2/m;
-		my $cryptpass = $1;
-		# Check the password
-		my $salt = $cryptpass;
-		$salt =~ s/^\$1\$//;
-		$salt =~ s/\$.*$//;
-		my $checkpass = qx|/usr/bin/openssl passwd -1 -salt '$salt' '$pass'|;
-		chomp $checkpass;
-
-		die "Wrong password for $user: '$cryptpass'. Expected password: '$checkpass'\n"
-			if ($checkpass ne $cryptpass);
-	} else {
-		die "No user '$user' in ".$ARGV[1].".\n";
-	}
-}
-
-$tmp = $template;
-while ($tmp =~ m/^(.*?)([^\n]*):\@PASS_SHA256 ([^:]*)\@:(.*)$/s) {
-	my $user = $2;
-	my $pass = $3;
-	$tmp = $4;
-	if ($file =~ m/^$user:/m) {
-		$file =~ s/^$user:([^:]*):(.*)$/$user:\@PASS_SHA256 $pass\@:$2/m;
-		my $cryptpass = $1;
-		# Check the password
-		my $salt = $cryptpass;
-		$salt =~ s/^\$5\$//;
-		my $rounds = "";
-		if ($salt =~ s/^rounds=([0-9]*)\$//) {
-			$rounds = "-R $1";
-		}
-
-		$salt =~ s/\$.*$//;
-		my $checkpass = qx!echo '$pass' | /usr/bin/mkpasswd -m sha-256 --salt '$salt' $rounds --stdin!;
-		chomp $checkpass;
-
-		die "Wrong password for $user: '$cryptpass'. Expected password: '$checkpass'\n"
-			if ($checkpass ne $cryptpass);
-	} else {
-		die "No user '$user' in ".$ARGV[1].".\n";
-	}
-}
-
-$tmp = $template;
-while ($tmp =~ m/^(.*?)([^\n]*):\@PASS_SHA512 ([^:]*)\@:(.*)$/s) {
-	my $user = $2;
-	my $pass = $3;
-	$tmp = $4;
-	if ($file =~ m/^$user:/m) {
-		$file =~ s/^$user:([^:]*):(.*)$/$user:\@PASS_SHA512 $pass\@:$2/m;
-		my $cryptpass = $1;
-		# Check the password
-		my $salt = $cryptpass;
-		$salt =~ s/^\$6\$//;
-		my $rounds = "";
-		if ($salt =~ s/^rounds=([0-9]*)\$//) {
-			$rounds = "-R $1";
-		}
-
-		$salt =~ s/\$.*$//;
-		my $checkpass = qx!echo '$pass' | /usr/bin/mkpasswd -m sha-512 --salt '$salt' $rounds --stdin!;
-		chomp $checkpass;
-
-		die "Wrong password for $user: '$cryptpass'. Expected password: '$checkpass'\n"
-			if ($checkpass ne $cryptpass);
-	} else {
-		die "No user '$user' in ".$ARGV[1].".\n";
-	}
-}
-
-
-exit 0 if ($file =~ m/^\Q$template\E$/s);
-
-print "Files differ.\n";
-
-system "diff", "-au", $ARGV[0], $ARGV[1];
-
-exit 1
diff --git a/tests/common/config.sh b/tests/common/config.sh
deleted file mode 100644
index 511b9a03..00000000
--- a/tests/common/config.sh
+++ /dev/null
@@ -1,121 +0,0 @@
-# Generic functions to save, change, and restore configuration files
-
-set -e
-
-build_path=/root/build/shadow-4.1.5/
-
-# Save the configuration files in tmp.
-save_config ()
-{
-	[ ! -d tmp ] && mkdir tmp
-	find config -depth -path "*/.svn/*" -prune -o -type f -print | sed -e 's/config\///' |
-	while read file
-	do
-		mkdir -p "tmp/$(dirname "$file")"
-		[ -f "/$file" ] && cp -dp "/$file" "tmp/$file" || true
-	done
-}
-
-# Copy the config files from config to the system
-change_config ()
-{
-	find config -depth -path "*/.svn/*" -prune -o -type f -print | sed -e 's/config\///' |
-	while read file
-	do
-		cp -f "config/$file" "/$file"
-	done
-}
-
-# Restored the config files in the system.
-# The config files must be saved before with save_config ().
-restore_config ()
-{
-	find config -depth -path "*/.svn/*" -prune -o -type f -print | sed -e 's/config\///' |
-	while read file
-	do
-		if [ -f "tmp/$file" ]; then
-			cp -dp "tmp/$file" "/$file"
-			rm "tmp/$file"
-		else
-			rm "/$file"
-		fi
-		d="$(dirname "tmp/$file")"
-		while [ -n "$d" ] && [ "$d" != "." ]
-		do
-			rmdir "$d" 2>/dev/null || true
-			d="$(dirname "$d")"
-		done
-	done
-
-	rmdir tmp 2>/dev/null || true
-}
-
-prepare_chroot ()
-{
-	mkdir tmp/root
-	cp -rfdp config_chroot/* tmp/root/
-	find tmp/root/ -name .svn -type d -print0 | xargs -0 rm -rf
-
-	lists=/root/tests/common/config_chroot.list
-	[ -f config_chroot.list ] && lists="$lists config_chroot.list"
-	cat $lists | grep -v "#" | while read f
-	do
-		# Create parent directory if needed
-		d=$(dirname tmp/root/$f)
-		[ -d $d ] || mkdir -p $d
-		# Create hard link
-		ln $f tmp/root/$f
-	done
-
-	# Copy existing gcda
-	mkdir -p tmp/root$build_path/lib
-	mkdir -p tmp/root$build_path/libmisc
-	mkdir -p tmp/root$build_path/src
-	find "$build_path" -name "*.gcda" | while read f
-	do
-		ln $f tmp/root/$f
-	done
-}
-
-clean_chroot ()
-{
-	# Remove copied files
-	lists=/root/tests/common/config_chroot.list
-	[ -f config_chroot.list ] && lists="$lists config_chroot.list"
-	cat $lists | grep -v "#" | while read f
-	do
-		rm -f tmp/root/$f
-		# Remove parent directory if empty
-		d=$(dirname tmp/root/$f)
-		rmdir -p --ignore-fail-on-non-empty $d
-	done
-
-	find "$build_path" -name "*.gcda" | while read f
-	do
-		rm -f tmp/root/$f
-	done
-	find tmp/root -name "*.gcda" | while read f
-	do
-		g=${f#tmp/root}
-		mv "$f" "$g"
-	done
-	rmdir tmp/root$build_path/lib
-	rmdir tmp/root$build_path/libmisc
-	rmdir tmp/root$build_path/src
-	rmdir tmp/root$build_path
-	rmdir tmp/root/root/build
-	rmdir tmp/root/root
-
-	find config_chroot -type f | while read f
-	do
-		f=${f#config_chroot/}
-		rm -f tmp/root/$f
-	done
-
-	find config_chroot -depth -type d | while read d
-	do
-		d=${d#config_chroot}
-		[ -d "tmp/root$d" ] && rmdir tmp/root$d
-	done
-}
-
diff --git a/tests/common/config_chroot-i386.list b/tests/common/config_chroot-i386.list
deleted file mode 100644
index ba7bf8a2..00000000
--- a/tests/common/config_chroot-i386.list
+++ /dev/null
@@ -1,25 +0,0 @@
-/lib/i386-linux-gnu/ld-2.13.so
-/lib/i386-linux-gnu/ld-linux.so.2
-/lib/ld-linux.so.2
-/lib/i386-linux-gnu/libcrypt-2.13.so
-/lib/i386-linux-gnu/libcrypt.so.1
-/lib/i386-linux-gnu/libc-2.13.so
-/lib/i386-linux-gnu/libc.so.6
-/lib/i386-linux-gnu/libdl-2.13.so
-/lib/i386-linux-gnu/libdl.so.2
-/lib/i386-linux-gnu/libnsl-2.13.so
-/lib/i386-linux-gnu/libnsl.so.1
-/lib/i386-linux-gnu/libnss_compat-2.13.so
-/lib/i386-linux-gnu/libnss_compat.so.2
-/lib/i386-linux-gnu/libpamc.so.0
-/lib/i386-linux-gnu/libpamc.so.0.82.1
-/lib/i386-linux-gnu/libpam_misc.so.0
-/lib/i386-linux-gnu/libpam_misc.so.0.82.0
-/lib/i386-linux-gnu/libpam.so.0
-/lib/i386-linux-gnu/libpam.so.0.83.0
-/lib/i386-linux-gnu/libselinux.so.1
-/lib/i386-linux-gnu/security/pam_deny.so
-/lib/i386-linux-gnu/security/pam_permit.so
-/lib/i386-linux-gnu/security/pam_rootok.so
-/lib/i386-linux-gnu/security/pam_shells.so
-/lib/i386-linux-gnu/security/pam_unix.so
diff --git a/tests/common/config_chroot-powerpc.list b/tests/common/config_chroot-powerpc.list
deleted file mode 100644
index e6c344ef..00000000
--- a/tests/common/config_chroot-powerpc.list
+++ /dev/null
@@ -1,25 +0,0 @@
-/lib/powerpc-linux-gnu/ld-2.13.so
-/lib/powerpc-linux-gnu/ld.so.1
-/lib/ld.so.1
-/lib/powerpc-linux-gnu/libcrypt-2.13.so
-/lib/powerpc-linux-gnu/libcrypt.so.1
-/lib/powerpc-linux-gnu/libc-2.13.so
-/lib/powerpc-linux-gnu/libc.so.6
-/lib/powerpc-linux-gnu/libdl-2.13.so
-/lib/powerpc-linux-gnu/libdl.so.2
-/lib/powerpc-linux-gnu/libnsl-2.13.so
-/lib/powerpc-linux-gnu/libnsl.so.1
-/lib/powerpc-linux-gnu/libnss_compat-2.13.so
-/lib/powerpc-linux-gnu/libnss_compat.so.2
-/lib/powerpc-linux-gnu/libpamc.so.0
-/lib/powerpc-linux-gnu/libpamc.so.0.82.1
-/lib/powerpc-linux-gnu/libpam_misc.so.0
-/lib/powerpc-linux-gnu/libpam_misc.so.0.82.0
-/lib/powerpc-linux-gnu/libpam.so.0
-/lib/powerpc-linux-gnu/libpam.so.0.83.0
-/lib/powerpc-linux-gnu/libselinux.so.1
-/lib/powerpc-linux-gnu/security/pam_deny.so
-/lib/powerpc-linux-gnu/security/pam_permit.so
-/lib/powerpc-linux-gnu/security/pam_rootok.so
-/lib/powerpc-linux-gnu/security/pam_shells.so
-/lib/powerpc-linux-gnu/security/pam_unix.so
diff --git a/tests/common/fopen_failure.c b/tests/common/fopen_failure.c
deleted file mode 100644
index 750cd667..00000000
--- a/tests/common/fopen_failure.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* 
- * gcc fopen_failure.c -o fopen_failure.so -shared -ldl 
- * LD_PRELOAD=./fopen_failure.so FAILURE_PATH=/etc/shadow ./test /etc/shadow
- */
-
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-
-
-typedef FILE * (*fopen_type) (const char *path, const char *mode);
-static fopen_type next_fopen;
-
-static const char *failure_path = NULL;
-
-FILE *fopen64 (const char *path, const char *mode)
-{
-printf ("fopen64(%s, %s)\n", path, mode);
-	if (NULL == next_fopen)
-	{
-		next_fopen = dlsym (RTLD_NEXT, "fopen64");
-		assert (NULL != next_fopen);
-	}
-	if (NULL == failure_path) {
-		failure_path = getenv ("FAILURE_PATH");
-		if (NULL == failure_path) {
-			fputs ("No FAILURE_PATH defined\n", stderr);
-		}
-	}
-
-	if (   (NULL != path)
-	    && (NULL != failure_path)
-	    && (strcmp (path, failure_path) == 0))
-	{
-		fprintf (stderr, "fopen64 FAILURE %s %s ...\n", path, mode);
-		errno = EIO;
-		return NULL;
-	}
-
-	return next_fopen (path, mode);
-}
-
diff --git a/tests/common/log.sh b/tests/common/log.sh
deleted file mode 100644
index 48879706..00000000
--- a/tests/common/log.sh
+++ /dev/null
@@ -1,46 +0,0 @@
-# Helpers to log messages / status
-
-log_start ()
-{
-	test="$1"
-	rationale="$2"
-	cat << EOF
-
-###############################################################################
-#
-# Test: $test
-#
-###############################################################################
-#
-# Rationale: $rationale
-#
-###############################################################################
-EOF
-}
-
-log_end ()
-{
-	test="$1"
-	cat << EOF
-###############################################################################
-#
-# End of test $test
-#
-###############################################################################
-
-EOF
-}
-
-log_status ()
-{
-	test="$1"
-	status="$2"
-	cat << EOF
-###############################################################################
-#
-# Status of test $test: $status
-#
-###############################################################################
-EOF
-}
-
diff --git a/tests/common/open_RDONLY_failure.c b/tests/common/open_RDONLY_failure.c
deleted file mode 100644
index e14859fb..00000000
--- a/tests/common/open_RDONLY_failure.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* 
- * gcc open_RDONLY_failure.c -o open_RDONLY_failure.so -shared -ldl 
- * LD_PRELOAD=./open_RDONLY_failure.so FAILURE_PATH=/etc/shadow ./test /etc/shadow
- */
-
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdarg.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-
-
-typedef int (*open_type) (const char *pathname, int flag, ...);
-static open_type next_open64;
-
-static const char *failure_path = NULL;
-
-int open64 (const char *pathname, int flag, ...)
-{
-	if (NULL == next_open64)
-	{
-		next_open64 = dlsym (RTLD_NEXT, "open64");
-		assert (NULL != next_open64);
-	}
-	if (NULL == failure_path) {
-		failure_path = getenv ("FAILURE_PATH");
-		if (NULL == failure_path) {
-			fputs ("No FAILURE_PATH defined\n", stderr);
-		}
-	}
-
-	if (   (NULL != pathname)
-	    && ((flag & O_ACCMODE) == O_RDONLY)
-	    && (NULL != failure_path)
-	    && (strcmp (pathname, failure_path) == 0))
-	{
-		fprintf (stderr, "open FAILURE %s %x ...\n", pathname, flag&O_ACCMODE);
-		errno = EIO;
-		return -1;
-	}
-
-	return next_open64 (pathname, flag);
-}
-
diff --git a/tests/common/open_RDWR_failure.c b/tests/common/open_RDWR_failure.c
deleted file mode 100644
index 5bf10690..00000000
--- a/tests/common/open_RDWR_failure.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* 
- * gcc open_RDWR_failure.c -o open_RDWR_failure.so -shared -ldl 
- * LD_PRELOAD=./open_RDWR_failure.so FAILURE_PATH=/etc/shadow ./test /etc/shadow
- */
-
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdarg.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-
-
-typedef int (*open_type) (const char *pathname, int flag, ...);
-static open_type next_open64;
-
-static const char *failure_path = NULL;
-
-int open64 (const char *pathname, int flag, ...)
-{
-	if (NULL == next_open64)
-	{
-		next_open64 = dlsym (RTLD_NEXT, "open64");
-		assert (NULL != next_open64);
-	}
-	if (NULL == failure_path) {
-		failure_path = getenv ("FAILURE_PATH");
-		if (NULL == failure_path) {
-			fputs ("No FAILURE_PATH defined\n", stderr);
-		}
-	}
-
-	if (   (NULL != pathname)
-	    && ((flag & O_ACCMODE) == O_RDWR)
-	    && (NULL != failure_path)
-	    && (strcmp (pathname, failure_path) == 0))
-	{
-		fprintf (stderr, "open FAILURE %s %x ...\n", pathname, flag&O_ACCMODE);
-		errno = EIO;
-		return -1;
-	}
-
-	return next_open64 (pathname, flag);
-}
-
diff --git a/tests/common/rename_failure.c b/tests/common/rename_failure.c
deleted file mode 100644
index dd02fe59..00000000
--- a/tests/common/rename_failure.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/* 
- * gcc rename_failure.c -o rename_failure.so -shared -ldl 
- * LD_PRELOAD=./rename_failure.so FAILURE_PATH=/etc/shadow ./test /etc/shadow
- */
-
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdarg.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-
-
-typedef int (*rename_type) (const char *old, const char *new);
-static rename_type next_rename;
-
-static const char *failure_path = NULL;
-
-int rename (const char *old, const char *new)
-{
-	if (NULL == next_rename)
-	{
-		next_rename = dlsym (RTLD_NEXT, "rename");
-		assert (NULL != next_rename);
-	}
-	if (NULL == failure_path) {
-		failure_path = getenv ("FAILURE_PATH");
-		if (NULL == failure_path) {
-			fputs ("No FAILURE_PATH defined\n", stderr);
-		}
-	}
-
-	if (   (NULL != new)
-	    && (NULL != failure_path)
-	    && (strcmp (new, failure_path) == 0))
-	{
-		fprintf (stderr, "rename FAILURE %s %s\n", old, new);
-		errno = EIO;
-		return -1;
-	}
-
-	return next_rename (old, new);
-}
-
diff --git a/tests/common/rmdir_failure.c b/tests/common/rmdir_failure.c
deleted file mode 100644
index 9d775b10..00000000
--- a/tests/common/rmdir_failure.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* 
- * gcc rmdir_failure.c -o rmdir_failure.so -shared -ldl 
- * LD_PRELOAD=./rmdir_failure.so FAILURE_PATH=/etc/shadow ./test /etc/shadow
- */
-
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdarg.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-
-typedef int (*rmdir_type) (const char *path);
-static rmdir_type next_rmdir;
-
-static const char *failure_path = NULL;
-
-int rmdir (const char *path)
-{
-	if (NULL == next_rmdir)
-	{
-		next_rmdir = dlsym (RTLD_NEXT, "rmdir");
-		assert (NULL != next_rmdir);
-	}
-	if (NULL == failure_path) {
-		failure_path = getenv ("FAILURE_PATH");
-		if (NULL == failure_path) {
-			fputs ("No FAILURE_PATH defined\n", stderr);
-		}
-	}
-
-	if (   (NULL != path)
-	    && (NULL != failure_path)
-	    && (strcmp (path, failure_path) == 0))
-	{
-		fprintf (stderr, "rmdir FAILURE %s\n", path);
-		errno = EBUSY;
-		return -1;
-	}
-
-	return next_rmdir (path);
-}
-
diff --git a/tests/common/time_0.c b/tests/common/time_0.c
deleted file mode 100644
index 6937361e..00000000
--- a/tests/common/time_0.c
+++ /dev/null
@@ -1,16 +0,0 @@
-/* 
- * gcc time_0.c -o time_0.so -shared
- * LD_PRELOAD=./time_0.so ./test
- */
-
-#include <stdio.h>
-#include <time.h>
-
-
-time_t time (time_t *t)
-{
-	fprintf (stderr, "time 0\n");
-
-	return (time_t)0;
-}
-
diff --git a/tests/common/time_past.c b/tests/common/time_past.c
deleted file mode 100644
index d0eb741e..00000000
--- a/tests/common/time_past.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* 
- * gcc time_past.c -o time_past.so -shared -ldl 
- * LD_PRELOAD=./time_past.so PAST_DAYS=2 ./test
- */
-
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdarg.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-
-
-typedef time_t (*time_type) (time_t *t);
-static time_type next_time;
-
-static int time_past = 0;
-static char *past = NULL;
-
-time_t time (time_t *t)
-{
-	time_t res;
-
-	if (NULL == next_time)
-	{
-		next_time = dlsym (RTLD_NEXT, "time");
-		assert (NULL != next_time);
-	}
-	if (NULL == past) {
-		const char *past = getenv ("PAST_DAYS");
-		if (NULL == past) {
-			fputs ("No PAST_DAYS defined\n", stderr);
-		}
-		time_past = atoi (past);
-	}
-
-	res = next_time (t);
-	res -= 24*60*60*time_past;
-
-	if (NULL != t) {
-		*t = res;
-	}
-
-	return res;
-}
-
diff --git a/tests/common/unlink_failure.c b/tests/common/unlink_failure.c
deleted file mode 100644
index 2281c8af..00000000
--- a/tests/common/unlink_failure.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* 
- * gcc unlink_failure.c -o unlink_failure.so -shared -ldl 
- * LD_PRELOAD=./unlink_failure.so FAILURE_PATH=/etc/shadow ./test /etc/shadow
- */
-
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdarg.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-
-typedef int (*unlink_type) (const char *path);
-static unlink_type next_unlink;
-
-static const char *failure_path = NULL;
-
-int unlink (const char *path)
-{
-	if (NULL == next_unlink)
-	{
-		next_unlink = dlsym (RTLD_NEXT, "unlink");
-		assert (NULL != next_unlink);
-	}
-	if (NULL == failure_path) {
-		failure_path = getenv ("FAILURE_PATH");
-		if (NULL == failure_path) {
-			fputs ("No FAILURE_PATH defined\n", stderr);
-		}
-	}
-
-	if (   (NULL != path)
-	    && (NULL != failure_path)
-	    && (strcmp (path, failure_path) == 0))
-	{
-		fprintf (stderr, "unlink FAILURE %s\n", path);
-		errno = EBUSY;
-		return -1;
-	}
-
-	return next_unlink (path);
-}
-