mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-21 22:53:37 +00:00
381c8b68c4
GUESTFSD_EXT_CMD was used by OpenSUSE to track which external commands are run by the daemon and package those commands into the appliance. It is no longer used by recent SUSE builds, so remove it. Thanks: Pino Toscano, Olaf Hering.
157 lines
3.6 KiB
C
157 lines
3.6 KiB
C
/* libguestfs - the guestfsd daemon
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* Copyright (C) 2016 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <string.h>
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#include <unistd.h>
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#include "guestfs_protocol.h"
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#include "daemon.h"
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#include "actions.h"
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#include "optgroups.h"
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static int send_command_output (const char *cmd);
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int
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do_download_inode (const mountable_t *mountable, int64_t inode)
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{
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int ret;
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CLEANUP_FREE char *cmd = NULL;
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/* Inode must be greater than 0 */
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if (inode < 0) {
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reply_with_error ("inode must be >= 0");
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return -1;
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}
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/* Construct the command. */
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ret = asprintf (&cmd, "icat -r %s %" PRIi64,
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mountable->device, inode);
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if (ret < 0) {
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reply_with_perror ("asprintf");
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return -1;
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}
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return send_command_output (cmd);
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}
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/* Takes optional arguments, consult optargs_bitmask. */
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int
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do_download_blocks (const mountable_t *mountable, int64_t start, int64_t stop,
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int unallocated)
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{
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int ret;
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const char *params;
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CLEANUP_FREE char *cmd = NULL;
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/* Data unit address start must be greater than 0 */
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if (start < 0) {
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reply_with_error ("starting address must be greater than zero");
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return -1;
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}
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/* Data unit address end must be greater than start */
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if (stop <= start) {
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reply_with_error ("stopping address must greater than starting address");
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return -1;
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}
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if (!(optargs_bitmask & GUESTFS_DOWNLOAD_BLOCKS_UNALLOCATED_BITMASK))
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params = " -e";
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else
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params = "";
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/* Construct the command. */
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ret = asprintf (&cmd, "blkls %s %s %" PRIi64 "-%" PRIi64,
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mountable->device, params, start, stop);
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if (ret < 0) {
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reply_with_perror ("asprintf");
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return -1;
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}
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return send_command_output (cmd);
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}
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/* Run the given command, collect the output and send it to the appliance.
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* Return 0 on success, -1 on error.
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*/
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static int
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send_command_output (const char *cmd)
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{
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int ret;
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FILE *fp;
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CLEANUP_FREE char *buffer = NULL;
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if (verbose)
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fprintf (stderr, "%s\n", cmd);
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buffer = malloc (GUESTFS_MAX_CHUNK_SIZE);
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if (buffer == NULL) {
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reply_with_perror ("malloc");
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return -1;
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}
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fp = popen (cmd, "r");
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if (fp == NULL) {
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reply_with_perror ("%s", cmd);
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return -1;
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}
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/* Send reply message before the file content. */
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reply (NULL, NULL);
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while ((ret = fread (buffer, 1, GUESTFS_MAX_CHUNK_SIZE, fp)) > 0) {
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ret = send_file_write (buffer, ret);
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if (ret < 0) {
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pclose (fp);
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return -1;
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}
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}
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ret = ferror (fp);
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if (ret != 0) {
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fprintf (stderr, "fread: %m");
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send_file_end (1); /* Cancel. */
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pclose (fp);
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return -1;
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}
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ret = pclose (fp);
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if (ret != 0) {
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fprintf (stderr, "pclose: %m");
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send_file_end (1); /* Cancel. */
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return -1;
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}
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ret = send_file_end (0); /* Normal end of file. */
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if (ret != 0)
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return -1;
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return 0;
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}
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int
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optgroup_sleuthkit_available (void)
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{
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return prog_exists ("icat");
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}
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