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This patch changes things around so that virStorageBackendRunProgRegex() does

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*not* virStorageReportError() if the fork()/exec() process it spawned returned a
!= 0 exit code.  Rather, it returns the exitcode in this case, and it is up to
the higher level to determine whether this is a fatal error or not.  The use
case for this change is in the iSCSI stuff; older versions of iscsiadm tools
would return a failure when getting the session number, despite the command
succeeding.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
This commit is contained in:
Chris Lalancette 2008-06-17 12:45:24 +00:00
parent a48f26c718
commit a75a612ad5
4 changed files with 45 additions and 19 deletions
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11
src/storage_backend.c
View File

@ -352,7 +352,8 @@ virStorageBackendRunProgRegex(virConnectPtr conn,
const char **regex,
int *nvars,
virStorageBackendListVolRegexFunc func,
void *data)
void *data,
int *outexit)
{
int child = 0, fd = -1, exitstatus, err, failed = 1;
FILE *list = NULL;
@ -487,12 +488,8 @@ virStorageBackendRunProgRegex(virConnectPtr conn,
return -1;
} else {
if (WIFEXITED(exitstatus)) {
if (WEXITSTATUS(exitstatus) != 0) {
virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
_("non-zero exit status from command %d"),
WEXITSTATUS(exitstatus));
return -1;
}
if (outexit != NULL)
*outexit = WEXITSTATUS(exitstatus);
} else {
virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("command did not exit cleanly"));

3
src/storage_backend.h
View File

@ -133,7 +133,8 @@ int virStorageBackendRunProgRegex(virConnectPtr conn,
const char **regex,
int *nvars,
virStorageBackendListVolRegexFunc func,
void *data);
void *data,
int *exitstatus);
int virStorageBackendRunProgNul(virConnectPtr conn,
virStoragePoolObjPtr pool,

9
src/storage_backend_iscsi.c
View File

@ -124,13 +124,18 @@ virStorageBackendISCSISession(virConnectPtr conn,
};
char *session = NULL;
/* Note that we ignore the exitstatus. Older versions of iscsiadm tools
* returned an exit status of > 0, even if they succeeded. We will just
* rely on whether session got filled in properly.
*/
if (virStorageBackendRunProgRegex(conn, pool,
prog,
1,
regexes,
vars,
virStorageBackendISCSIExtractSession,
&session) < 0)
&session,
NULL) < 0)
return NULL;
if (session == NULL) {
@ -373,7 +378,7 @@ virStorageBackendISCSIFindLUNs(virConnectPtr conn,
regexes,
vars,
virStorageBackendISCSIMakeLUN,
(void *)session);
(void *)session, NULL);
}

29
src/storage_backend_logical.c
View File

@ -214,14 +214,30 @@ virStorageBackendLogicalFindLVs(virConnectPtr conn,
pool->def->name, NULL
};
return virStorageBackendRunProgRegex(conn,
int exitstatus;
if (virStorageBackendRunProgRegex(conn,
pool,
prog,
1,
regexes,
vars,
virStorageBackendLogicalMakeVol,
vol);
vol,
&exitstatus) < 0) {
virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
_("lvs command failed"));
return -1;
}
if (exitstatus != 0) {
virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
_("lvs command failed with exitstatus %d"),
exitstatus);
return -1;
}
return 0;
}
static int
@ -347,6 +363,7 @@ virStorageBackendLogicalRefreshPool(virConnectPtr conn,
"--nosuffix", "--options", "vg_size,vg_free",
pool->def->name, NULL
};
int exitstatus;
/* Get list of all logical volumes */
if (virStorageBackendLogicalFindLVs(conn, pool, NULL) < 0) {
@ -362,7 +379,13 @@ virStorageBackendLogicalRefreshPool(virConnectPtr conn,
regexes,
vars,
virStorageBackendLogicalRefreshPoolFunc,
NULL) < 0) {
NULL,
&exitstatus) < 0) {
virStoragePoolObjClearVols(pool);
return -1;
}
if (exitstatus != 0) {
virStoragePoolObjClearVols(pool);
return -1;
}