qga: move linux vcpu command impls to commands-linux.c

The qmp_guest_set_vcpus and qmp_guest_get_vcpus command impls in
commands-posix.c are surrounded by '#ifdef __linux__' so should
instead live in commands-linux.c

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20240712132459.3974109-3-berrange@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>

1 files changed, 0 insertions, 139 deletions

diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 76af98ba32..a8ef41f175 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -2003,145 +2003,6 @@ void qmp_guest_suspend_hybrid(Error **errp)
     guest_suspend(SUSPEND_MODE_HYBRID, errp);
 }
 
-/* Transfer online/offline status between @vcpu and the guest system.
- *
- * On input either @errp or *@errp must be NULL.
- *
- * In system-to-@vcpu direction, the following @vcpu fields are accessed:
- * - R: vcpu->logical_id
- * - W: vcpu->online
- * - W: vcpu->can_offline
- *
- * In @vcpu-to-system direction, the following @vcpu fields are accessed:
- * - R: vcpu->logical_id
- * - R: vcpu->online
- *
- * Written members remain unmodified on error.
- */
-static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu,
-                          char *dirpath, Error **errp)
-{
-    int fd;
-    int res;
-    int dirfd;
-    static const char fn[] = "online";
-
-    dirfd = open(dirpath, O_RDONLY | O_DIRECTORY);
-    if (dirfd == -1) {
-        error_setg_errno(errp, errno, "open(\"%s\")", dirpath);
-        return;
-    }
-
-    fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR);
-    if (fd == -1) {
-        if (errno != ENOENT) {
-            error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn);
-        } else if (sys2vcpu) {
-            vcpu->online = true;
-            vcpu->can_offline = false;
-        } else if (!vcpu->online) {
-            error_setg(errp, "logical processor #%" PRId64 " can't be "
-                       "offlined", vcpu->logical_id);
-        } /* otherwise pretend successful re-onlining */
-    } else {
-        unsigned char status;
-
-        res = pread(fd, &status, 1, 0);
-        if (res == -1) {
-            error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn);
-        } else if (res == 0) {
-            error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath,
-                       fn);
-        } else if (sys2vcpu) {
-            vcpu->online = (status != '0');
-            vcpu->can_offline = true;
-        } else if (vcpu->online != (status != '0')) {
-            status = '0' + vcpu->online;
-            if (pwrite(fd, &status, 1, 0) == -1) {
-                error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath,
-                                 fn);
-            }
-        } /* otherwise pretend successful re-(on|off)-lining */
-
-        res = close(fd);
-        g_assert(res == 0);
-    }
-
-    res = close(dirfd);
-    g_assert(res == 0);
-}
-
-GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
-{
-    GuestLogicalProcessorList *head, **tail;
-    const char *cpu_dir = "/sys/devices/system/cpu";
-    const gchar *line;
-    g_autoptr(GDir) cpu_gdir = NULL;
-    Error *local_err = NULL;
-
-    head = NULL;
-    tail = &head;
-    cpu_gdir = g_dir_open(cpu_dir, 0, NULL);
-
-    if (cpu_gdir == NULL) {
-        error_setg_errno(errp, errno, "failed to list entries: %s", cpu_dir);
-        return NULL;
-    }
-
-    while (local_err == NULL && (line = g_dir_read_name(cpu_gdir)) != NULL) {
-        GuestLogicalProcessor *vcpu;
-        int64_t id;
-        if (sscanf(line, "cpu%" PRId64, &id)) {
-            g_autofree char *path = g_strdup_printf("/sys/devices/system/cpu/"
-                                                    "cpu%" PRId64 "/", id);
-            vcpu = g_malloc0(sizeof *vcpu);
-            vcpu->logical_id = id;
-            vcpu->has_can_offline = true; /* lolspeak ftw */
-            transfer_vcpu(vcpu, true, path, &local_err);
-            QAPI_LIST_APPEND(tail, vcpu);
-        }
-    }
-
-    if (local_err == NULL) {
-        /* there's no guest with zero VCPUs */
-        g_assert(head != NULL);
-        return head;
-    }
-
-    qapi_free_GuestLogicalProcessorList(head);
-    error_propagate(errp, local_err);
-    return NULL;
-}
-
-int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
-{
-    int64_t processed;
-    Error *local_err = NULL;
-
-    processed = 0;
-    while (vcpus != NULL) {
-        char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/",
-                                     vcpus->value->logical_id);
-
-        transfer_vcpu(vcpus->value, false, path, &local_err);
-        g_free(path);
-        if (local_err != NULL) {
-            break;
-        }
-        ++processed;
-        vcpus = vcpus->next;
-    }
-
-    if (local_err != NULL) {
-        if (processed == 0) {
-            error_propagate(errp, local_err);
-        } else {
-            error_free(local_err);
-        }
-    }
-
-    return processed;
-}
 #endif /* __linux__ */
 
 #if defined(__linux__) || defined(__FreeBSD__)