check-unixfile
chroot-cat
chroot-rm
+chroot-sh
chxid
clearenv
enter-namespace
src/capchroot \
src/chain-echo \
src/check-unixfile \
+ src/chroot-sh \
src/filetime \
src/lockfile \
src/readlink \
src/save_ctxinfo \
src/mask2prefix \
src/chbind \
- src/chroot-cat \
- src/chroot-rm \
src/exec-cd \
src/fakerunlevel \
src/keep-ctx-alive \
src/chain-echo \
src/chcontext-compat \
src/check-unixfile \
- src/chroot-cat \
- src/chroot-rm \
+ src/chroot-sh \
src/fakerunlevel \
src/filetime \
src/keep-ctx-alive \
src_filetime_LDFLAGS = $(VSERVER_LDFLGS)
src_chain_echo_SOURCES = src/chain-echo.c
-src_chroot_cat_SOURCES = src/chroot-cat.c
-src_chroot_rm_SOURCES = src/chroot-rm.c
+src_chroot_sh_SOURCES = src/chroot-sh.c
src_exec_cd_SOURCES = src/exec-cd.c
src_fakerunlevel_SOURCES = src/fakerunlevel.c
src_ifspec_SOURCES = src/ifspec.c
+++ /dev/null
-// $Id$ --*- c -*--
-
-// Copyright (C) 2003,2004,2005 Enrico Scholz <>
-//
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; version 2 of the License.
-//
-// This program 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 General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "util.h"
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#define ENSC_WRAPPERS_UNISTD 1
-#define ENSC_WRAPPERS_FCNTL 1
-#define ENSC_WRAPPERS_IO 1
-#include <wrappers.h>
-
-int wrapper_exit_code = 1;
-
-static void
-showHelp(char const UNUSED *cmd)
-{
- WRITE_MSG(1,
- "Usage: chroot-cat [-i|-o|-a] [--] <file>\n"
- "\n"
- "Does something similarly to 'chroot . cat OP <file>' without\n"
- "the need for a 'cat' in the chroot.\n"
- "\n"
- "Options:\n"
- " -a ... append to <file> (OP = '>>')\n"
- " -o ... truncate and append to <file> (OP = '>')\n"
- " -i ... use file as input (OP = '<') (default)\n"
- "\n"
- "Please report bugs to " PACKAGE_BUGREPORT "\n");
- exit(0);
-}
-
-static void
-showVersion()
-{
- WRITE_MSG(1,
- "chroot-cat " VERSION " -- cat stdin into a chrooted file\n"
- "This program is part of " PACKAGE_STRING "\n\n"
- "Copyright (C) 2003,2004,2005 Enrico Scholz\n"
- VERSION_COPYRIGHT_DISCLAIMER);
- exit(0);
-}
-
-
-int main(int argc, char *argv[])
-{
- int fd;
- int idx = 1;
- int fd_in;
- int fd_out;
-
- int xflag = O_RDONLY|O_NOCTTY;
- enum {dirIN, dirOUT} dir = dirIN;
-
- if (argc>=2) {
- if (strcmp(argv[idx], "--help") ==0) showHelp(argv[0]);
- if (strcmp(argv[idx], "--version")==0) showVersion();
- if (strcmp(argv[idx], "-a") ==0) { xflag = O_WRONLY|O_CREAT|O_APPEND; dir = dirOUT; ++idx; }
- if (strcmp(argv[idx], "-o") ==0) { xflag = O_WRONLY|O_CREAT|O_TRUNC; dir = dirOUT; ++idx; }
- if (strcmp(argv[idx], "-i") ==0) ++idx;
- if (strcmp(argv[idx], "--") ==0) ++idx;
- }
-
- if (xflag==0) {
- WRITE_MSG(2, "chroot-cat: Not mode specified; use '--help' for more information\n");
- return wrapper_exit_code;
- }
-
- if (argc<idx+1) {
- WRITE_MSG(2, "Not enough parameters; use '--help' for more information\n");
- return wrapper_exit_code;
- }
-
- if (argc>idx+1) {
- WRITE_MSG(2, "Too much parameters; use '--help' for more information\n");
- return wrapper_exit_code;
- }
-
- Echroot(".");
- Echdir("/");
-
- fd = EopenD(argv[idx], xflag, 0644);
-
- switch (dir) {
- case dirIN : fd_in = fd; fd_out = 1; break;
- default : fd_in = 0; fd_out = fd; break;
- }
-
- for (;;) {
- char buf[4096];
- char const * ptr=buf;
- ssize_t len;
-
- len = Eread(fd_in, buf, sizeof(buf));
- if (len<=0) break;
-
- EwriteAll(fd_out, ptr, len);
- }
- Eclose(fd);
-
- return EXIT_SUCCESS;
-}
+++ /dev/null
-// $Id$ --*- c -*--
-
-// Copyright (C) 2003,2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
-//
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; version 2 of the License.
-//
-// This program 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 General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "util.h"
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <errno.h>
-
-#define ENSC_WRAPPERS_PREFIX "chroot-rm: "
-#define ENSC_WRAPPERS_UNISTD 1
-#include <wrappers.h>
-
-int wrapper_exit_code = 1;
-
-static void
-showHelp(char const *cmd)
-{
- WRITE_MSG(1, "Usage: ");
- WRITE_STR(1, cmd);
- WRITE_MSG(1,
- " [--] <files>+\n\n"
- "This program removes <files> by assuming the current directory\n"
- "as a chroot directory.\n\n"
- "Please report bugs to " PACKAGE_BUGREPORT "\n");
- exit(0);
-}
-
-static void
-showVersion()
-{
- WRITE_MSG(1,
- "chroot-rm " VERSION " -- removes files under current directory\n"
- "This program is part of " PACKAGE_STRING "\n\n"
- "Copyright (C) 2003,2004 Enrico Scholz\n"
- VERSION_COPYRIGHT_DISCLAIMER);
- exit(0);
-}
-
-int main(int argc, char *argv[])
-{
- int res = EXIT_SUCCESS;
- int idx = 1;
-
- if (argc>1) {
- if (strcmp(argv[1], "--help") ==0) showHelp(argv[0]);
- if (strcmp(argv[1], "--version")==0) showVersion();
- if (strcmp(argv[1], "--")==0) ++idx;
- }
-
- if (idx==argc) {
- WRITE_MSG(2, "No files given; use '--help' for more information\n");
- return EXIT_FAILURE;
- }
-
- Echroot(".");
-
- for (; idx<argc; ++idx) {
- if (unlink(argv[idx])==-1) {
- PERROR_Q(ENSC_WRAPPERS_PREFIX "unlink", argv[idx]);
- res = EXIT_FAILURE;
- }
- }
-
- return res;
-}
--- /dev/null
+// $Id$ --*- c -*--
+
+// Copyright (C) 2005 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <lib_internal/util.h>
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#define ENSC_WRAPPERS_PREFIX "chroot-sh"
+#define ENSC_WRAPPERS_UNISTD 1
+#define ENSC_WRAPPERS_IO 1
+#define ENSC_WRAPPERS_FCNTL 1
+#include <ensc_wrappers/wrappers.h>
+
+int wrapper_exit_code = EXIT_FAILURE;
+
+static void
+showFD(int fd_in, int fd_out)
+{
+ for (;;) {
+ char buf[4096];
+ char const * ptr=buf;
+ ssize_t len;
+
+ len = Eread(fd_in, buf, sizeof(buf));
+ if (len<=0) break;
+
+ EwriteAll(fd_out, ptr, len);
+ }
+}
+
+static int
+redirectFileInternal(int argc, char *argv[],
+ int mode, bool is_input,
+ char const *operation)
+{
+ int fd;
+
+ if (argc<2) {
+ WRITE_MSG(2, "Not enough parameters for '");
+ WRITE_STR(2, operation);
+ WRITE_MSG(2, "' operation; use '--help' for more information\n");
+ return wrapper_exit_code;
+ }
+
+ fd = EopenD(argv[1], mode, 0644);
+ if (is_input) showFD(fd, 1);
+ else showFD( 0, fd);
+ Eclose(fd);
+
+ return EXIT_SUCCESS;
+}
+
+static int
+execCat(int argc, char *argv[])
+{
+ return redirectFileInternal(argc, argv,
+ O_RDONLY|O_NOCTTY, true,
+ "cat");
+}
+
+static int
+execAppend(int argc, char *argv[])
+{
+ return redirectFileInternal(argc, argv,
+ O_WRONLY|O_CREAT|O_APPEND, false,
+ "append");
+}
+
+static int
+execTruncate(int argc, char *argv[])
+{
+ return redirectFileInternal(argc, argv,
+ O_WRONLY|O_CREAT|O_TRUNC, false,
+ "truncate");
+}
+
+static int
+execRm(int argc, char *argv[])
+{
+ int i = 1;
+ int res = EXIT_SUCCESS;
+
+ if (argc<2) {
+ WRITE_MSG(2, "No files specified for 'rm' operation; try '--help' for more information\n");
+ return wrapper_exit_code;
+ }
+
+ for (;i<argc; ++i) {
+ if (unlink(argv[i])==-1) {
+ PERROR_Q(ENSC_WRAPPERS_PREFIX "unlink", argv[i]);
+ res = EXIT_FAILURE;
+ }
+ }
+
+ return res;
+}
+
+static struct Command {
+ char const *cmd;
+ int (*handler)(int argc, char *argv[]);
+} const COMMANDS[] = {
+ { "cat", execCat },
+ { "append", execAppend },
+ { "truncate", execTruncate },
+ { "rm", execRm },
+ { 0,0 }
+};
+
+static void
+showHelp()
+{
+ WRITE_MSG(1,
+ "Usage: chroot-sh "
+ " [--] <cmd> <args>*\n\n"
+ "This program chroots into the current directory and executes the specified\n"
+ "commands there. This means that all used paths are relative to the current\n"
+ "directory, and symlinks can point to files under the current path only.\n"
+ "\n"
+ "The supported commands are:\n"
+ " cat <file> ... gives out <file> to stdout\n"
+ " append <file> ... appends stdin to <file> which is created when needed\n"
+ " truncate <file> ... clear <file> and fill it with stdin; the <file> is\n"
+ " created when needed\n"
+ " rm <file>+ ... unlink the given files\n\n"
+ "Please report bugs to " PACKAGE_BUGREPORT "\n");
+ exit(0);
+}
+
+static void
+showVersion()
+{
+ WRITE_MSG(1,
+ "chroot-sh " VERSION " -- execute commands within a chroot\n"
+ "This program is part of " PACKAGE_STRING "\n\n"
+ "Copyright (C) 2005 Enrico Scholz\n"
+ VERSION_COPYRIGHT_DISCLAIMER);
+ exit(0);
+}
+
+
+int main(int argc, char *argv[])
+{
+ struct Command const *cmd;
+ int idx = 1;
+
+ if (argc>=2) {
+ if (strcmp(argv[idx], "--help") ==0) showHelp();
+ if (strcmp(argv[idx], "--version")==0) showVersion();
+ if (strcmp(argv[idx], "--")==0) ++idx;
+ }
+
+ if (argc<idx+1) {
+ WRITE_MSG(2, "No command specified; try '--help' for more information\n");
+ return wrapper_exit_code;
+ }
+
+ Echroot(".");
+ Echdir("/");
+
+ for (cmd=COMMANDS+0; cmd->cmd!=0; ++cmd) {
+ if (strcmp(cmd->cmd, argv[idx])==0)
+ return cmd->handler(argc-idx, argv+idx);
+ }
+
+ WRITE_MSG(2, "Invalid command '");
+ WRITE_STR(2, argv[idx]);
+ WRITE_MSG(2, "'; try '--help' for more information\n");
+
+ return wrapper_exit_code;
+}