1 /* libguestfs - the guestfsd daemon
2 * Copyright (C) 2009 Red Hat Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include "../src/guestfs_protocol.h"
31 fwrite_cb (void *fp_ptr, const void *buf, int len)
33 FILE *fp = *(FILE **)fp_ptr;
34 return fwrite (buf, len, 1, fp) == 1 ? 0 : -1;
37 /* Has one FileIn parameter. */
45 if (!root_mounted || dir[0] != '/') {
47 reply_with_error ("tar-in: root must be mounted and path must be absolute");
51 /* "tar -C /sysroot%s -xf -" but we have to quote the dir. */
52 if (asprintf_nowarn (&cmd, "tar -C %R -xf -", dir) == -1) {
56 reply_with_perror ("asprintf");
61 fprintf (stderr, "%s\n", cmd);
63 fp = popen (cmd, "w");
68 reply_with_perror ("%s", cmd);
74 r = receive_file (fwrite_cb, &fp);
75 if (r == -1) { /* write error */
79 reply_with_perror ("write: %s", dir);
83 if (r == -2) { /* cancellation from library */
85 /* Do NOT send any error. */
89 if (pclose (fp) != 0) {
93 reply_with_perror ("pclose: %s", dir);
100 /* Has one FileOut parameter. */
102 do_tar_out (char *dir)
107 char buf[GUESTFS_MAX_CHUNK_SIZE];
112 /* "tar -C /sysroot%s -cf - ." but we have to quote the dir. */
113 if (asprintf_nowarn (&cmd, "tar -C %R -cf - .", dir) == -1) {
114 reply_with_perror ("asprintf");
119 fprintf (stderr, "%s\n", cmd);
121 fp = popen (cmd, "r");
123 reply_with_perror ("%s", cmd);
129 /* Now we must send the reply message, before the file contents. After
130 * this there is no opportunity in the protocol to send any error
131 * message back. Instead we can only cancel the transfer.
135 while ((r = fread (buf, 1, sizeof buf, fp)) > 0) {
136 if (send_file_write (buf, r) < 0) {
144 send_file_end (1); /* Cancel. */
149 if (pclose (fp) != 0) {
151 send_file_end (1); /* Cancel. */
155 send_file_end (0); /* Normal end of file. */
159 /* Has one FileIn parameter. */
161 do_tgz_in (char *dir)
167 if (!root_mounted || dir[0] != '/') {
169 reply_with_error ("tar-in: root must be mounted and path must be absolute");
173 /* "tar -C /sysroot%s -zxf -" but we have to quote the dir. */
174 if (asprintf_nowarn (&cmd, "tar -C %R -zxf -", dir) == -1) {
178 reply_with_perror ("asprintf");
183 fprintf (stderr, "%s\n", cmd);
185 fp = popen (cmd, "w");
190 reply_with_perror ("%s", cmd);
196 r = receive_file (fwrite_cb, &fp);
197 if (r == -1) { /* write error */
201 reply_with_perror ("write: %s", dir);
205 if (r == -2) { /* cancellation from library */
207 /* Do NOT send any error. */
211 if (pclose (fp) != 0) {
215 reply_with_perror ("pclose: %s", dir);
222 /* Has one FileOut parameter. */
224 do_tgz_out (char *dir)
229 char buf[GUESTFS_MAX_CHUNK_SIZE];
234 /* "tar -C /sysroot%s -zcf - ." but we have to quote the dir. */
235 if (asprintf_nowarn (&cmd, "tar -C %R -zcf - .", dir) == -1) {
236 reply_with_perror ("asprintf");
241 fprintf (stderr, "%s\n", cmd);
243 fp = popen (cmd, "r");
245 reply_with_perror ("%s", cmd);
251 /* Now we must send the reply message, before the file contents. After
252 * this there is no opportunity in the protocol to send any error
253 * message back. Instead we can only cancel the transfer.
257 while ((r = fread (buf, 1, sizeof buf, fp)) > 0) {
258 if (send_file_write (buf, r) < 0) {
266 send_file_end (1); /* Cancel. */
271 if (pclose (fp) != 0) {
273 send_file_end (1); /* Cancel. */
277 send_file_end (0); /* Normal end of file. */