mirror of
https://github.com/libguestfs/libguestfs.git
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84fc760439
Nearly every file-related function in daemons/*.c is affected: Remove this pair of statements from each affected do_* function: - NEED_ROOT (return -1); - ABS_PATH (dir, return -1); and change the type of the corresponding parameter to "const char *". * src/generator.ml: Emit NEED_ROOT just once, even when there are two or more Pathname args.
143 lines
3.0 KiB
C
143 lines
3.0 KiB
C
/* libguestfs - the guestfsd daemon
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* Copyright (C) 2009 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., 675 Mass Ave, Cambridge, MA 02139, 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 <string.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <unistd.h>
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#include "daemon.h"
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#include "actions.h"
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/* These functions are all about using the blockdev command, so
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* we centralize it in one call.
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*/
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static int64_t
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call_blockdev (const char *device, char *switc, int extraarg, int prints)
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{
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int r;
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int64_t rv;
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char *out, *err;
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const char *argv[] = {
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"/sbin/blockdev",
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switc,
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NULL,
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NULL,
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NULL
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};
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char buf[64];
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if (extraarg > 0) {
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snprintf (buf, sizeof buf, "%d", extraarg);
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argv[2] = buf;
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argv[3] = device;
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} else
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argv[2] = device;
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r = commandv (&out, &err, argv);
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if (r == -1) {
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reply_with_error ("%s: %s", argv[0], err);
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free (err);
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free (out);
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return -1;
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}
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rv = 0;
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if (prints) {
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if (sscanf (out, "%" SCNi64, &rv) != 1) {
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reply_with_error ("%s: expected output, but got nothing", argv[0]);
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free (out);
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return -1;
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}
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}
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free (out);
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return rv;
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}
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int
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do_blockdev_setro (const char *device)
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{
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return (int) call_blockdev (device, "--setro", 0, 0);
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}
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int
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do_blockdev_setrw (const char *device)
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{
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return (int) call_blockdev (device, "--setrw", 0, 0);
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}
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int
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do_blockdev_getro (const char *device)
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{
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return (int) call_blockdev (device, "--getro", 0, 1);
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}
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int
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do_blockdev_getss (const char *device)
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{
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return (int) call_blockdev (device, "--getss", 0, 1);
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}
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int
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do_blockdev_getbsz (const char *device)
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{
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return (int) call_blockdev (device, "--getbsz", 0, 1);
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}
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int
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do_blockdev_setbsz (const char *device, int blocksize)
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{
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if (blocksize <= 0 /* || blocksize >= what? */) {
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reply_with_error ("blockdev_setbsz: blocksize must be > 0");
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return -1;
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}
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return (int) call_blockdev (device, "--setbsz", blocksize, 0);
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}
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int64_t
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do_blockdev_getsz (const char *device)
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{
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return call_blockdev (device, "--getsz", 0, 1);
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}
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int64_t
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do_blockdev_getsize64 (const char *device)
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{
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return call_blockdev (device, "--getsize64", 0, 1);
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}
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int
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do_blockdev_flushbufs (const char *device)
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{
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return call_blockdev (device, "--flushbufs", 0, 0);
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}
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int
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do_blockdev_rereadpt (const char *device)
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{
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return call_blockdev (device, "--rereadpt", 0, 0);
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}
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