Currently virProcessGetStatInfo() always returns success and only logs error when it is unable to parse the data. Make this function actually report the error and return a negative value in this error scenario. Fix the callers so that they do not override the error generated. Also fix non-linux implementation of this function so as to report error. Signed-off-by: Ani Sinha <ani(a)anisinha.ca&gt; --- src/ch/ch_driver.c | 2 -- src/qemu/qemu_driver.c | 7 +------ src/util/virprocess.c | 17 +++++++++++++---- 3 files changed, 14 insertions(+), 12 deletions(-) changelog: v4: on freebsd error on the logs is a problem appaently. try to fix that. v3: fix non linux implementation v2: fix callers diff --git a/src/ch/ch_driver.c b/src/ch/ch_driver.c index 53e0872207..3cbc668489 100644 --- a/src/ch/ch_driver.c +++ b/src/ch/ch_driver.c @@ -1073,8 +1073,6 @@ chDomainHelperGetVcpus(virDomainObj *vm, if (virProcessGetStatInfo(&vcpuinfo->cpuTime, &vcpuinfo->cpu, NULL, vm->pid, vcpupid) < 0) { - virReportSystemError(errno, "%s", - _("cannot get vCPU placement & pCPU time")); return -1; } } diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index d3d76c003f..65ac5ef367 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -1359,8 +1359,6 @@ qemuDomainHelperGetVcpus(virDomainObj *vm, if (virProcessGetStatInfo(&vcpuinfo->cpuTime, &vcpuinfo->cpu, NULL, vm->pid, vcpupid) < 0) { - virReportSystemError(errno, "%s", - _("cannot get vCPU placement & pCPU time")); return -1; } } @@ -2521,8 +2519,6 @@ qemuDomainGetInfo(virDomainPtr dom, if (virDomainObjIsActive(vm)) { if (virProcessGetStatInfo(&(info->cpuTime), NULL, NULL, vm->pid, 0) < 0) { - virReportError(VIR_ERR_OPERATION_FAILED, "%s", - _("cannot read cputime for domain")); goto cleanup; } } @@ -10530,8 +10526,7 @@ qemuDomainMemoryStatsInternal(virQEMUDriver *driver, } if (virProcessGetStatInfo(NULL, NULL, &rss, vm->pid, 0) < 0) { - virReportError(VIR_ERR_OPERATION_FAILED, "%s", - _("cannot get RSS for domain")); + virResetLastError(); } else { stats[ret].tag = VIR_DOMAIN_MEMORY_STAT_RSS; stats[ret].val = rss; diff --git a/src/util/virprocess.c b/src/util/virprocess.c index b559a4257e..cbb31441cc 100644 --- a/src/util/virprocess.c +++ b/src/util/virprocess.c @@ -1779,12 +1779,20 @@ virProcessGetStatInfo(unsigned long long *cpuTime, long rss = 0; int cpu = 0; - if (!proc_stat || - virStrToLong_ullp(proc_stat[VIR_PROCESS_STAT_UTIME], NULL, 10, &usertime) < 0 || + if (!proc_stat) { + VIR_WARN("Unable to get proc stats from the kernel"); + return 0; + } + + if (virStrToLong_ullp(proc_stat[VIR_PROCESS_STAT_UTIME], NULL, 10, &usertime) < 0 || virStrToLong_ullp(proc_stat[VIR_PROCESS_STAT_STIME], NULL, 10, &systime) < 0 || virStrToLong_l(proc_stat[VIR_PROCESS_STAT_RSS], NULL, 10, &rss) < 0 || virStrToLong_i(proc_stat[VIR_PROCESS_STAT_PROCESSOR], NULL, 10, &cpu) < 0) { - VIR_WARN("cannot parse process status data"); + virReportError(VIR_ERR_INTERNAL_ERROR, + _("cannot parse process status data for pid '%d/%d'"), + (int) pid, (int) tid); + + return -1; } /* We got jiffies @@ -1881,7 +1889,8 @@ virProcessGetStatInfo(unsigned long long *cpuTime G_GNUC_UNUSED, pid_t pid G_GNUC_UNUSED, pid_t tid G_GNUC_UNUSED) { - errno = ENOSYS; + virReportSystemError(ENOSYS, "%s", + _("Process statistics data is not supported on this platform")); return -1; } -- 2.25.1

Currently virProcessGetStatInfo() always returns success and only logs error when it is unable to parse the data. Make this function actually report the error and return a negative value in this error scenario. Fix the callers so that they do not override the error generated. Also fix non-linux implementation of this function so as to report error. Signed-off-by: Ani Sinha <ani(a)anisinha.ca&gt; --- src/ch/ch_driver.c | 2 -- src/qemu/qemu_driver.c | 7 +------ src/util/virprocess.c | 17 +++++++++++++---- 3 files changed, 14 insertions(+), 12 deletions(-) changelog: v4: on freebsd error on the logs is a problem appaently. try to fix that. v3: fix non linux implementation v2: fix callers diff --git a/src/ch/ch_driver.c b/src/ch/ch_driver.c index 53e0872207..3cbc668489 100644 --- a/src/ch/ch_driver.c +++ b/src/ch/ch_driver.c @@ -1073,8 +1073,6 @@ chDomainHelperGetVcpus(virDomainObj *vm, if (virProcessGetStatInfo(&vcpuinfo->cpuTime, &vcpuinfo->cpu, NULL, vm->pid, vcpupid) < 0) { - virReportSystemError(errno, "%s", - _("cannot get vCPU placement & pCPU time")); return -1; } } diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index d3d76c003f..65ac5ef367 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -1359,8 +1359,6 @@ qemuDomainHelperGetVcpus(virDomainObj *vm, if (virProcessGetStatInfo(&vcpuinfo->cpuTime, &vcpuinfo->cpu, NULL, vm->pid, vcpupid) < 0) { - virReportSystemError(errno, "%s", - _("cannot get vCPU placement & pCPU time")); return -1; } } @@ -2521,8 +2519,6 @@ qemuDomainGetInfo(virDomainPtr dom, if (virDomainObjIsActive(vm)) { if (virProcessGetStatInfo(&(info->cpuTime), NULL, NULL, vm->pid, 0) < 0) { - virReportError(VIR_ERR_OPERATION_FAILED, "%s", - _("cannot read cputime for domain")); goto cleanup; } } @@ -10530,8 +10526,7 @@ qemuDomainMemoryStatsInternal(virQEMUDriver *driver, } if (virProcessGetStatInfo(NULL, NULL, &rss, vm->pid, 0) < 0) { - virReportError(VIR_ERR_OPERATION_FAILED, "%s", - _("cannot get RSS for domain")); + virResetLastError(); } else { stats[ret].tag = VIR_DOMAIN_MEMORY_STAT_RSS; stats[ret].val = rss; diff --git a/src/util/virprocess.c b/src/util/virprocess.c index b559a4257e..cbb31441cc 100644 --- a/src/util/virprocess.c +++ b/src/util/virprocess.c @@ -1779,12 +1779,20 @@ virProcessGetStatInfo(unsigned long long *cpuTime, long rss = 0; int cpu = 0; - if (!proc_stat || - virStrToLong_ullp(proc_stat[VIR_PROCESS_STAT_UTIME], NULL, 10, &usertime) < 0 || + if (!proc_stat) { + VIR_WARN("Unable to get proc stats from the kernel"); + return 0; + } +