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https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
0306c98d31
guestfsd calls many different tools. Keeping track of all of them is error prone. This patch introduces a new helper macro to put the command string into its own ELF section: GUESTFSD_EXT_CMD(C_variable, command_name); This syntax makes it still possible to grep for used command names. The actual usage of the collected list could be like this: objcopy -j .guestfsd_ext_cmds -O binary daemon/guestfsd /dev/stdout | tr '\0' '\n' | sort -u The resulting output will be used to tell mkinitrd which programs to copy into the initrd. Signed-off-by: Olaf Hering <olaf@aepfle.de> RWMJ: - Move str_vgchange at request of author. - Fix snprintf call in daemon/debug.c
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/* libguestfs - the guestfsd daemon
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* Copyright (C) 2009-2012 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 <string.h>
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#include <unistd.h>
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#include <inttypes.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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GUESTFSD_EXT_CMD(str_du, du);
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int64_t
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do_du (const char *path)
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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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char *buf;
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/* Make the path relative to /sysroot. */
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buf = sysroot_path (path);
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if (!buf) {
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reply_with_perror ("malloc");
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return -1;
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}
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pulse_mode_start ();
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r = command (&out, &err, str_du, "-s", buf, NULL);
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free (buf);
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if (r == -1) {
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pulse_mode_cancel ();
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reply_with_error ("%s: %s", path, err);
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free (out);
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free (err);
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return -1;
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}
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free (err);
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if (sscanf (out, "%"SCNi64, &rv) != 1) {
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pulse_mode_cancel ();
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reply_with_error ("%s: could not read output: %s", path, out);
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free (out);
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return -1;
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}
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free (out);
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pulse_mode_end ();
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return rv;
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}
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