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daemon: collect list of called external commands

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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
This commit is contained in:
Olaf Hering
2012-08-30 20:51:27 +02:00
committed by Richard W.M. Jones
parent 4aa1464d42
commit 0306c98d31
51 changed files with 352 additions and 203 deletions
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9
daemon/sfdisk.c
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@@ -29,6 +29,9 @@
#include "daemon.h"
#include "actions.h"
GUESTFSD_EXT_CMD(str_sfdisk, sfdisk);
GUESTFSD_EXT_CMD(str_blockdev, blockdev);
static int
sfdisk (const char *device, int n, int cyls, int heads, int sectors,
const char *extra_flag,
@@ -38,7 +41,7 @@ sfdisk (const char *device, int n, int cyls, int heads, int sectors,
char buf[256];
int i;
strcpy (buf, "sfdisk");
strcpy (buf, str_sfdisk);
if (n > 0)
sprintf (buf + strlen (buf), " -N %d", n);
@@ -101,7 +104,7 @@ sfdisk (const char *device, int n, int cyls, int heads, int sectors,
* other component. In any case, reread the partition table
* unconditionally here.
*/
(void) command (NULL, NULL, "blockdev", "--rereadpt", device, NULL);
(void) command (NULL, NULL, str_blockdev, "--rereadpt", device, NULL);
udev_settle ();
@@ -136,7 +139,7 @@ sfdisk_flag (const char *device, const char *flag)
char *out, *err;
int r;
r = command (&out, &err, "sfdisk", flag, device, NULL);
r = command (&out, &err, str_sfdisk, flag, device, NULL);
if (r == -1) {
reply_with_error ("%s: %s", device, err);
free (out);