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fdstream: separate out virCommandPtr cleanup

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Let's us de-nest some of the logic, and will simplify upcoming
patches
This commit is contained in:
Cole Robinson 2016-04-25 12:31:00 -04:00
parent 441e881e9a
commit c0e870376c
1 changed files with 42 additions and 31 deletions
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73
src/fdstream.c
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@ -240,6 +240,46 @@ virFDStreamAddCallback(virStreamPtr st,
return ret;
}
static int
virFDStreamCloseCommand(struct virFDStreamData *fdst)
{
char buf[1024];
ssize_t len;
int status;
int ret = -1;
if (!fdst->cmd)
return 0;
if ((len = saferead(fdst->errfd, buf, sizeof(buf)-1)) < 0)
buf[0] = '\0';
else
buf[len] = '\0';
virCommandRawStatus(fdst->cmd);
if (virCommandWait(fdst->cmd, &status) < 0)
goto cleanup;
if (status != 0) {
if (buf[0] != '\0') {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s", buf);
} else if (WIFEXITED(status)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("I/O helper exited with status %d"),
WEXITSTATUS(status));
} else {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("I/O helper exited abnormally"));
}
goto cleanup;
}
ret = 0;
cleanup:
virCommandFree(fdst->cmd);
fdst->cmd = NULL;
return ret;
}
static int
virFDStreamCloseInt(virStreamPtr st, bool streamAbort)
@ -285,37 +325,8 @@ virFDStreamCloseInt(virStreamPtr st, bool streamAbort)
/* mutex locked */
ret = VIR_CLOSE(fdst->fd);
if (fdst->cmd) {
char buf[1024];
ssize_t len;
int status;
if ((len = saferead(fdst->errfd, buf, sizeof(buf)-1)) < 0)
buf[0] = '\0';
else
buf[len] = '\0';
virCommandRawStatus(fdst->cmd);
if (virCommandWait(fdst->cmd, &status) < 0) {
ret = -1;
} else if (status != 0) {
if (buf[0] == '\0') {
if (WIFEXITED(status)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("I/O helper exited with status %d"),
WEXITSTATUS(status));
} else {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("I/O helper exited abnormally"));
}
} else {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
buf);
}
ret = -1;
}
virCommandFree(fdst->cmd);
fdst->cmd = NULL;
}
if (virFDStreamCloseCommand(fdst) < 0)
ret = -1;
if (VIR_CLOSE(fdst->errfd) < 0)
VIR_DEBUG("ignoring failed close on fd %d", fdst->errfd);