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mke2fs: Use e4fsprogs programs if available.

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On RHEL 5, mke2fs is ancient, and there is a non-standard "mke4fs"
binary which acts like the more recent mke2fs on Fedora.  Since there
are several annoyances and actual bugs in the ancient RHEL 5 mke2fs,
use mke4fs instead if it's available.
This commit is contained in:
Richard W.M. Jones
2009-08-19 14:03:35 +01:00
committed by Richard Jones
parent 5da810b960
commit 2b891ceef3
2 changed files with 48 additions and 3 deletions
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49
daemon/ext2.c
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@@ -335,6 +335,40 @@ do_mke2journal_U (int blocksize, const char *uuid, const char *device)
return 0;
}
/* Run mke2fs to create a filesystem of type fstype, where fstype
* is the string "ext2", "ext3" or "ext4".
*
* This is more complex than it seems.
*
* On RHEL 5, the -t option was deprecated. Moreover RHEL <= 5.4
* systems have a bug where the -t option doesn't work (it doesn't
* correctly ignore the following argument).
*
* On RHEL 5, to create an ext4dev filesystem you have to use
* the special command /sbin/mke4fs. This can also create ext2/3
* using the '-t fstype' option.
*
* On Fedora 11+, mke4fs was renamed mke2fs, and it can use the
* '-t fstype' option to specify the filesystem type.
*
* So it seems best to run /sbin/mke4fs if it exists, or /sbin/mke2fs
* otherwise. We specify e4fsprogs in the package list to ensure it
* is loaded if it exists.
*/
static const char *
get_mke2fs (void)
{
static const char *const progs[] = { "/sbin/mke4fs", "/sbin/mke2fs", NULL };
int i;
for (i = 0; progs[i]; ++i)
if (access (progs[i], F_OK) == 0)
return progs[i];
reply_with_error ("mke2fs: no mke2fs binary found in appliance");
return NULL;
}
int
do_mke2fs_J (const char *fstype, int blocksize, const char *device,
const char *journal)
@@ -342,6 +376,9 @@ do_mke2fs_J (const char *fstype, int blocksize, const char *device,
char *err;
int r;
const char *prog = get_mke2fs ();
if (!prog) return -1;
char blocksize_s[32];
snprintf (blocksize_s, sizeof blocksize_s, "%d", blocksize);
@@ -350,7 +387,7 @@ do_mke2fs_J (const char *fstype, int blocksize, const char *device,
snprintf (jdev, len+32, "device=%s", journal);
r = command (NULL, &err,
"/sbin/mke2fs", "-t", fstype, "-J", jdev, "-b", blocksize_s,
prog, "-t", fstype, "-J", jdev, "-b", blocksize_s,
device, NULL);
if (r == -1) {
reply_with_error ("mke2fs_J: %s", err);
@@ -369,6 +406,9 @@ do_mke2fs_JL (const char *fstype, int blocksize, const char *device,
char *err;
int r;
const char *prog = get_mke2fs ();
if (!prog) return -1;
char blocksize_s[32];
snprintf (blocksize_s, sizeof blocksize_s, "%d", blocksize);
@@ -377,7 +417,7 @@ do_mke2fs_JL (const char *fstype, int blocksize, const char *device,
snprintf (jdev, len+32, "device=LABEL=%s", label);
r = command (NULL, &err,
"/sbin/mke2fs", "-t", fstype, "-J", jdev, "-b", blocksize_s,
prog, "-t", fstype, "-J", jdev, "-b", blocksize_s,
device, NULL);
if (r == -1) {
reply_with_error ("mke2fs_JL: %s", err);
@@ -396,6 +436,9 @@ do_mke2fs_JU (const char *fstype, int blocksize, const char *device,
char *err;
int r;
const char *prog = get_mke2fs ();
if (!prog) return -1;
char blocksize_s[32];
snprintf (blocksize_s, sizeof blocksize_s, "%d", blocksize);
@@ -404,7 +447,7 @@ do_mke2fs_JU (const char *fstype, int blocksize, const char *device,
snprintf (jdev, len+32, "device=UUID=%s", uuid);
r = command (NULL, &err,
"/sbin/mke2fs", "-t", fstype, "-J", jdev, "-b", blocksize_s,
prog, "-t", fstype, "-J", jdev, "-b", blocksize_s,
device, NULL);
if (r == -1) {
reply_with_error ("mke2fs_JU: %s", err);