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/* libguestfs - the guestfsd daemon
* Copyright (C) 2009 Red Hat Inc.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/stat.h>
#include <errno.h>
#include "daemon.h"
#include "actions.h"
GUESTFSD_EXT_CMD(str_ls, ls);
/* Has one FileOut parameter. */
int
do_ls0 (const char *path)
{
DIR *dir;
struct dirent *d;
size_t len;
CHROOT_IN;
dir = opendir (path);
CHROOT_OUT;
if (dir == NULL) {
reply_with_perror ("opendir: %s", path);
return -1;
}
/* Now we must send the reply message, before the filenames. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
while (1) {
errno = 0;
d = readdir (dir);
if (d == NULL) break;
/* Ignore . and .. */
if (STREQ (d->d_name, ".") || STREQ (d->d_name, ".."))
continue;
/* Send the name in a single chunk. XXX Needs to be fixed if
* names can be longer than the chunk size. Note we use 'len+1'
* because we want to include the \0 terminating character in the
* output.
*/
len = strlen (d->d_name);
if (send_file_write (d->d_name, len+1) < 0) {
closedir (dir);
return -1;
}
}
if (errno != 0) {
fprintf (stderr, "readdir: %s: %m\n", path);
send_file_end (1); /* Cancel. */
closedir (dir);
return -1;
}
if (closedir (dir) == -1) {
fprintf (stderr, "closedir: %s: %m\n", path);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
/* Because we can't chroot and run the ls command (since 'ls' won't
* necessarily exist in the chroot), this command can be used to escape
* from the sysroot (eg. 'll /..'). This command is not meant for
* serious use anyway, just for quick interactive sessions.
*/
char *
do_ll (const char *path)
{
int r;
char *out;
CLEANUP_FREE char *err = NULL;
CLEANUP_FREE char *spath = NULL;
spath = sysroot_path (path);
if (!spath) {
reply_with_perror ("malloc");
return NULL;
}
r = command (&out, &err, str_ls, "-la", spath, NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (out);
return NULL;
}
return out; /* caller frees */
}
char *
do_llz (const char *path)
{
int r;
char *out;
CLEANUP_FREE char *err = NULL;
CLEANUP_FREE char *spath = NULL;
spath = sysroot_path (path);
if (!spath) {
reply_with_perror ("malloc");
return NULL;
}
r = command (&out, &err, str_ls, "-laZ", spath, NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (out);
return NULL;
}
return out; /* caller frees */
}
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