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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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#define _GNU_SOURCE // for strchrnul
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include "../src/guestfs_protocol.h"
#include "daemon.h"
#include "actions.h"
char **
do_tune2fs_l (const char *device)
{
int r;
char *out, *err;
char *p, *pend, *colon;
char **ret = NULL;
int size = 0, alloc = 0;
IS_DEVICE (device, NULL);
r = command (&out, &err, "/sbin/tune2fs", "-l", device, NULL);
if (r == -1) {
reply_with_error ("tune2fs: %s", err);
free (err);
free (out);
return NULL;
}
free (err);
p = out;
/* Discard the first line if it contains "tune2fs ...". */
if (strncmp (p, "tune2fs ", 8) == 0) {
p = strchr (p, '\n');
if (p) p++;
else {
reply_with_error ("tune2fs: truncated output");
free (out);
return NULL;
}
}
/* Read the lines and split into "key: value". */
while (*p) {
pend = strchrnul (p, '\n');
if (*pend == '\n') {
*pend = '\0';
pend++;
}
if (!*p) continue;
colon = strchr (p, ':');
if (colon) {
*colon = '\0';
do { colon++; } while (*colon && isspace (*colon));
if (add_string (&ret, &size, &alloc, p) == -1) {
free (out);
return NULL;
}
if (strcmp (colon, "<none>") == 0 ||
strcmp (colon, "<not available>") == 0 ||
strcmp (colon, "(none)") == 0) {
if (add_string (&ret, &size, &alloc, "") == -1) {
free (out);
return NULL;
}
} else {
if (add_string (&ret, &size, &alloc, colon) == -1) {
free (out);
return NULL;
}
}
}
else {
if (add_string (&ret, &size, &alloc, p) == -1) {
free (out);
return NULL;
}
if (add_string (&ret, &size, &alloc, "") == -1) {
free (out);
return NULL;
}
}
p = pend;
}
free (out);
if (add_string (&ret, &size, &alloc, NULL) == -1)
return NULL;
return ret;
}
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