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b9dd878ff8
Auditing all callers of virCommandRun and virCommandWait that passed a non-NULL pointer for exit status turned up some interesting observations. Many callers were merely passing a pointer to avoid the overall command dying, but without caring what the exit status was - but these callers would be better off treating a child death by signal as an abnormal exit. Other callers were actually acting on the status, but not all of them remembered to filter by WIFEXITED and convert with WEXITSTATUS; depending on the platform, this can result in a status being reported as 256 times too big. And among those that correctly parse the output, it gets rather verbose. Finally, there were the callers that explicitly checked that the status was 0, and gave their own message, but with fewer details than what virCommand gives for free. So the best idea is to move the complexity out of callers and into virCommand - by default, we return the actual exit status already cleaned through WEXITSTATUS and treat signals as a failed command; but the few callers that care can ask for raw status and act on it themselves. * src/util/vircommand.h (virCommandRawStatus): New prototype. * src/libvirt_private.syms (util/command.h): Export it. * docs/internals/command.html.in: Document it. * src/util/vircommand.c (virCommandRawStatus): New function. (virCommandWait): Adjust semantics. * tests/commandtest.c (test1): Test it. * daemon/remote.c (remoteDispatchAuthPolkit): Adjust callers. * src/access/viraccessdriverpolkit.c (virAccessDriverPolkitCheck): Likewise. * src/fdstream.c (virFDStreamCloseInt): Likewise. * src/lxc/lxc_process.c (virLXCProcessStart): Likewise. * src/qemu/qemu_command.c (qemuCreateInBridgePortWithHelper): Likewise. * src/xen/xen_driver.c (xenUnifiedXendProbe): Simplify. * tests/reconnect.c (mymain): Likewise. * tests/statstest.c (mymain): Likewise. * src/bhyve/bhyve_process.c (virBhyveProcessStart) (virBhyveProcessStop): Don't overwrite virCommand error. * src/libvirt.c (virConnectAuthGainPolkit): Likewise. * src/openvz/openvz_driver.c (openvzDomainGetBarrierLimit) (openvzDomainSetBarrierLimit): Likewise. * src/util/virebtables.c (virEbTablesOnceInit): Likewise. * src/util/viriptables.c (virIpTablesOnceInit): Likewise. * src/util/virnetdevveth.c (virNetDevVethCreate): Fix debug message. * src/qemu/qemu_capabilities.c (virQEMUCapsInitQMP): Add comment. * src/storage/storage_backend_iscsi.c (virStorageBackendISCSINodeUpdate): Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/utsname.h>
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#include "internal.h"
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#include "testutils.h"
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#include "vircommand.h"
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static int
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mymain(void)
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{
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int id = 0;
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bool ro = false;
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virConnectPtr conn;
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virDomainPtr dom;
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virCommandPtr cmd;
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struct utsname ut;
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/* Skip test if xend is not running. Calling xend on a non-xen
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kernel causes some versions of xend to issue a crash report, so
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we first probe uname results. */
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uname(&ut);
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if (strstr(ut.release, "xen") == NULL)
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return EXIT_AM_SKIP;
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cmd = virCommandNewArgList("/usr/sbin/xend", "status", NULL);
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if (virCommandRun(cmd, NULL) < 0) {
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virCommandFree(cmd);
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return EXIT_AM_SKIP;
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}
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virCommandFree(cmd);
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virtTestQuiesceLibvirtErrors(true);
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conn = virConnectOpen(NULL);
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if (conn == NULL) {
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ro = true;
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conn = virConnectOpenReadOnly(NULL);
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}
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if (conn == NULL) {
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fprintf(stderr, "First virConnectOpen() failed\n");
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return EXIT_FAILURE;
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}
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dom = virDomainLookupByID(conn, id);
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if (dom == NULL) {
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fprintf(stderr, "First lookup for domain %d failed\n", id);
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return EXIT_FAILURE;
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}
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virDomainFree(dom);
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virConnectClose(conn);
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if (ro)
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conn = virConnectOpenReadOnly(NULL);
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else
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conn = virConnectOpen(NULL);
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if (conn == NULL) {
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fprintf(stderr, "Second virConnectOpen() failed\n");
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return EXIT_FAILURE;
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}
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dom = virDomainLookupByID(conn, id);
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if (dom == NULL) {
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fprintf(stderr, "Second lookup for domain %d failed\n", id);
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return EXIT_FAILURE;
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}
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virDomainFree(dom);
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virConnectClose(conn);
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return EXIT_SUCCESS;
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}
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VIRT_TEST_MAIN(mymain)
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