diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/qtest/libqos/fw_cfg.c | 202 | ||||
| -rw-r--r-- | tests/qtest/libqos/fw_cfg.h | 6 | ||||
| -rw-r--r-- | tests/qtest/libqtest.c | 110 | ||||
| -rw-r--r-- | tests/qtest/meson.build | 1 | ||||
| -rw-r--r-- | tests/qtest/vhost-user-test.c | 3 | ||||
| -rw-r--r-- | tests/qtest/vmcoreinfo-test.c | 90 | ||||
| -rw-r--r-- | tests/unit/test-char.c | 398 |
7 files changed, 736 insertions, 74 deletions
diff --git a/tests/qtest/libqos/fw_cfg.c b/tests/qtest/libqos/fw_cfg.c index 89f053ccac..0ab3959171 100644 --- a/tests/qtest/libqos/fw_cfg.c +++ b/tests/qtest/libqos/fw_cfg.c @@ -14,6 +14,8 @@ #include "qemu/osdep.h" #include "fw_cfg.h" +#include "malloc-pc.h" +#include "libqos-malloc.h" #include "../libqtest.h" #include "qemu/bswap.h" #include "hw/nvram/fw_cfg.h" @@ -60,6 +62,91 @@ static void mm_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key) qtest_writew(fw_cfg->qts, fw_cfg->base, key); } +static void qfw_cfg_dma_transfer(QFWCFG *fw_cfg, QOSState *qs, void *address, + uint32_t length, uint32_t control) +{ + FWCfgDmaAccess access; + uint32_t addr; + uint64_t guest_access_addr; + uint64_t gaddr; + + /* create a data buffer in guest memory */ + gaddr = guest_alloc(&qs->alloc, length); + + if (control & FW_CFG_DMA_CTL_WRITE) { + qtest_bufwrite(fw_cfg->qts, gaddr, address, length); + } + access.address = cpu_to_be64(gaddr); + access.length = cpu_to_be32(length); + access.control = cpu_to_be32(control); + + /* now create a separate buffer in guest memory for 'access' */ + guest_access_addr = guest_alloc(&qs->alloc, sizeof(access)); + qtest_bufwrite(fw_cfg->qts, guest_access_addr, &access, sizeof(access)); + + /* write lower 32 bits of address */ + addr = cpu_to_be32((uint32_t)(uintptr_t)guest_access_addr); + qtest_outl(fw_cfg->qts, fw_cfg->base + 8, addr); + + /* write upper 32 bits of address */ + addr = cpu_to_be32((uint32_t)(uintptr_t)(guest_access_addr >> 32)); + qtest_outl(fw_cfg->qts, fw_cfg->base + 4, addr); + + g_assert(!(be32_to_cpu(access.control) & FW_CFG_DMA_CTL_ERROR)); + + if (control & FW_CFG_DMA_CTL_READ) { + qtest_bufread(fw_cfg->qts, gaddr, address, length); + } + + guest_free(&qs->alloc, guest_access_addr); + guest_free(&qs->alloc, gaddr); +} + +static void qfw_cfg_write_entry(QFWCFG *fw_cfg, QOSState *qs, uint16_t key, + void *buf, uint32_t len) +{ + qfw_cfg_select(fw_cfg, key); + qfw_cfg_dma_transfer(fw_cfg, qs, buf, len, FW_CFG_DMA_CTL_WRITE); +} + +static void qfw_cfg_read_entry(QFWCFG *fw_cfg, QOSState *qs, uint16_t key, + void *buf, uint32_t len) +{ + qfw_cfg_select(fw_cfg, key); + qfw_cfg_dma_transfer(fw_cfg, qs, buf, len, FW_CFG_DMA_CTL_READ); +} + +static bool find_pdir_entry(QFWCFG *fw_cfg, const char *filename, + uint16_t *sel, uint32_t *size) +{ + g_autofree unsigned char *filesbuf = NULL; + uint32_t count; + size_t dsize; + FWCfgFile *pdir_entry; + uint32_t i; + bool found = false; + + *size = 0; + *sel = 0; + + qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, &count, sizeof(count)); + count = be32_to_cpu(count); + dsize = sizeof(uint32_t) + count * sizeof(struct fw_cfg_file); + filesbuf = g_malloc(dsize); + qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, filesbuf, dsize); + pdir_entry = (FWCfgFile *)(filesbuf + sizeof(uint32_t)); + for (i = 0; i < count; ++i, ++pdir_entry) { + if (!strcmp(pdir_entry->name, filename)) { + *size = be32_to_cpu(pdir_entry->size); + *sel = be16_to_cpu(pdir_entry->select); + found = true; + break; + } + } + + return found; +} + /* * The caller need check the return value. When the return value is * nonzero, it means that some bytes have been transferred. @@ -73,37 +160,106 @@ static void mm_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key) * populated, it has received only a starting slice of the fw_cfg file. */ size_t qfw_cfg_get_file(QFWCFG *fw_cfg, const char *filename, - void *data, size_t buflen) + void *data, size_t buflen) { - uint32_t count; - uint32_t i; - unsigned char *filesbuf = NULL; - size_t dsize; - FWCfgFile *pdir_entry; size_t filesize = 0; + uint32_t len; + uint16_t sel; - qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, &count, sizeof(count)); - count = be32_to_cpu(count); - dsize = sizeof(uint32_t) + count * sizeof(struct fw_cfg_file); - filesbuf = g_malloc(dsize); - qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, filesbuf, dsize); - pdir_entry = (FWCfgFile *)(filesbuf + sizeof(uint32_t)); - for (i = 0; i < count; ++i, ++pdir_entry) { - if (!strcmp(pdir_entry->name, filename)) { - uint32_t len = be32_to_cpu(pdir_entry->size); - uint16_t sel = be16_to_cpu(pdir_entry->select); - filesize = len; - if (len > buflen) { - len = buflen; - } - qfw_cfg_get(fw_cfg, sel, data, len); - break; + if (find_pdir_entry(fw_cfg, filename, &sel, &len)) { + filesize = len; + if (len > buflen) { + len = buflen; } + qfw_cfg_get(fw_cfg, sel, data, len); } - g_free(filesbuf); + return filesize; } +/* + * The caller need check the return value. When the return value is + * nonzero, it means that some bytes have been transferred. + * + * If the fw_cfg file in question is smaller than the allocated & passed-in + * buffer, then the first len bytes were read. + * + * If the fw_cfg file in question is larger than the passed-in + * buffer, then the return value explains how much was actually read. + * + * It is illegal to call this function if fw_cfg does not support DMA + * interface. The caller should ensure that DMA is supported before + * calling this function. + * + * Passed QOSState pointer qs must be initialized. qs->alloc must also be + * properly initialized. + */ +size_t qfw_cfg_read_file(QFWCFG *fw_cfg, QOSState *qs, const char *filename, + void *data, size_t buflen) +{ + uint32_t len = 0; + uint16_t sel; + uint32_t id; + + g_assert(qs); + g_assert(filename); + g_assert(data); + g_assert(buflen); + /* check if DMA is supported since we use DMA for read */ + id = qfw_cfg_get_u32(fw_cfg, FW_CFG_ID); + g_assert(id & FW_CFG_VERSION_DMA); + + if (find_pdir_entry(fw_cfg, filename, &sel, &len)) { + if (len > buflen) { + len = buflen; + } + qfw_cfg_read_entry(fw_cfg, qs, sel, data, len); + } + + return len; +} + +/* + * The caller need check the return value. When the return value is + * nonzero, it means that some bytes have been transferred. + * + * If the fw_cfg file in question is smaller than the allocated & passed-in + * buffer, then the buffer has been partially written. + * + * If the fw_cfg file in question is larger than the passed-in + * buffer, then the return value explains how much was actually written. + * + * It is illegal to call this function if fw_cfg does not support DMA + * interface. The caller should ensure that DMA is supported before + * calling this function. + * + * Passed QOSState pointer qs must be initialized. qs->alloc must also be + * properly initialized. + */ +size_t qfw_cfg_write_file(QFWCFG *fw_cfg, QOSState *qs, const char *filename, + void *data, size_t buflen) +{ + uint32_t len = 0; + uint16_t sel; + uint32_t id; + + g_assert(qs); + g_assert(filename); + g_assert(data); + g_assert(buflen); + /* write operation is only valid if DMA is supported */ + id = qfw_cfg_get_u32(fw_cfg, FW_CFG_ID); + g_assert(id & FW_CFG_VERSION_DMA); + + if (find_pdir_entry(fw_cfg, filename, &sel, &len)) { + if (len > buflen) { + len = buflen; + } + qfw_cfg_write_entry(fw_cfg, qs, sel, data, len); + } + return len; +} + static void mm_fw_cfg_read(QFWCFG *fw_cfg, void *data, size_t len) { uint8_t *ptr = data; diff --git a/tests/qtest/libqos/fw_cfg.h b/tests/qtest/libqos/fw_cfg.h index b0456a15df..6d6ff09725 100644 --- a/tests/qtest/libqos/fw_cfg.h +++ b/tests/qtest/libqos/fw_cfg.h @@ -14,6 +14,7 @@ #define LIBQOS_FW_CFG_H #include "../libqtest.h" +#include "libqos.h" typedef struct QFWCFG QFWCFG; @@ -33,7 +34,10 @@ uint32_t qfw_cfg_get_u32(QFWCFG *fw_cfg, uint16_t key); uint64_t qfw_cfg_get_u64(QFWCFG *fw_cfg, uint16_t key); size_t qfw_cfg_get_file(QFWCFG *fw_cfg, const char *filename, void *data, size_t buflen); - +size_t qfw_cfg_write_file(QFWCFG *fw_cfg, QOSState *qs, const char *filename, + void *data, size_t buflen); +size_t qfw_cfg_read_file(QFWCFG *fw_cfg, QOSState *qs, const char *filename, + void *data, size_t buflen); QFWCFG *mm_fw_cfg_init(QTestState *qts, uint64_t base); void mm_fw_cfg_uninit(QFWCFG *fw_cfg); QFWCFG *io_fw_cfg_init(QTestState *qts, uint16_t base); diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c index 437b24fa2e..fe8606ba6a 100644 --- a/tests/qtest/libqtest.c +++ b/tests/qtest/libqtest.c @@ -30,6 +30,7 @@ #include "libqtest.h" #include "libqmp.h" +#include "qemu/accel.h" #include "qemu/ctype.h" #include "qemu/cutils.h" #include "qemu/sockets.h" @@ -1011,15 +1012,62 @@ const char *qtest_get_arch(void) return end + 1; } +static bool qtest_qom_has_concrete_type(const char *parent_typename, + const char *child_typename, + QList **cached_list) +{ + QList *list = cached_list ? *cached_list : NULL; + const QListEntry *p; + QObject *qobj; + QString *qstr; + QDict *devinfo; + int idx; + + if (!list) { + QDict *resp; + QDict *args; + QTestState *qts = qtest_init("-machine none"); + + args = qdict_new(); + qdict_put_bool(args, "abstract", false); + qdict_put_str(args, "implements", parent_typename); + + resp = qtest_qmp(qts, "{'execute': 'qom-list-types', 'arguments': %p }", + args); + g_assert(qdict_haskey(resp, "return")); + list = qdict_get_qlist(resp, "return"); + qobject_ref(list); + qobject_unref(resp); + + qtest_quit(qts); + + if (cached_list) { + *cached_list = list; + } + } + + for (p = qlist_first(list), idx = 0; p; p = qlist_next(p), idx++) { + devinfo = qobject_to(QDict, qlist_entry_obj(p)); + g_assert(devinfo); + + qobj = qdict_get(devinfo, "name"); + g_assert(qobj); + qstr = qobject_to(QString, qobj); + g_assert(qstr); + if (g_str_equal(qstring_get_str(qstr), child_typename)) { + return true; + } + } + + return false; +} + bool qtest_has_accel(const char *accel_name) { - if (g_str_equal(accel_name, "tcg")) { -#if defined(CONFIG_TCG) - return true; -#else - return false; -#endif - } else if (g_str_equal(accel_name, "kvm")) { + static QList *list; + g_autofree char *accel_type = NULL; + + if (g_str_equal(accel_name, "kvm")) { int i; const char *arch = qtest_get_arch(); const char *targets[] = { CONFIG_KVM_TARGETS }; @@ -1031,11 +1079,12 @@ bool qtest_has_accel(const char *accel_name) } } } - } else { - /* not implemented */ - g_assert_not_reached(); + return false; } - return false; + + accel_type = g_strconcat(accel_name, ACCEL_CLASS_SUFFIX, NULL); + + return qtest_qom_has_concrete_type("accel", accel_type, &list); } bool qtest_get_irq(QTestState *s, int num) @@ -1790,45 +1839,8 @@ bool qtest_has_machine(const char *machine) bool qtest_has_device(const char *device) { static QList *list; - const QListEntry *p; - QObject *qobj; - QString *qstr; - QDict *devinfo; - int idx; - - if (!list) { - QDict *resp; - QDict *args; - QTestState *qts = qtest_init("-machine none"); - - args = qdict_new(); - qdict_put_bool(args, "abstract", false); - qdict_put_str(args, "implements", "device"); - - resp = qtest_qmp(qts, "{'execute': 'qom-list-types', 'arguments': %p }", - args); - g_assert(qdict_haskey(resp, "return")); - list = qdict_get_qlist(resp, "return"); - qobject_ref(list); - qobject_unref(resp); - - qtest_quit(qts); - } - - for (p = qlist_first(list), idx = 0; p; p = qlist_next(p), idx++) { - devinfo = qobject_to(QDict, qlist_entry_obj(p)); - g_assert(devinfo); - qobj = qdict_get(devinfo, "name"); - g_assert(qobj); - qstr = qobject_to(QString, qobj); - g_assert(qstr); - if (g_str_equal(qstring_get_str(qstr), device)) { - return true; - } - } - - return false; + return qtest_qom_has_concrete_type("device", device, &list); } /* diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index e60e92fe9d..5e062c752a 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -57,6 +57,7 @@ qtests_i386 = \ (config_all_devices.has_key('CONFIG_AHCI_ICH9') ? ['tco-test'] : []) + \ (config_all_devices.has_key('CONFIG_FDC_ISA') ? ['fdc-test'] : []) + \ (config_all_devices.has_key('CONFIG_I440FX') ? ['fw_cfg-test'] : []) + \ + (config_all_devices.has_key('CONFIG_FW_CFG_DMA') ? ['vmcoreinfo-test'] : []) + \ (config_all_devices.has_key('CONFIG_I440FX') ? ['i440fx-test'] : []) + \ (config_all_devices.has_key('CONFIG_I440FX') ? ['ide-test'] : []) + \ (config_all_devices.has_key('CONFIG_I440FX') ? ['numa-test'] : []) + \ diff --git a/tests/qtest/vhost-user-test.c b/tests/qtest/vhost-user-test.c index 76d142a158..bd977ef28d 100644 --- a/tests/qtest/vhost-user-test.c +++ b/tests/qtest/vhost-user-test.c @@ -1043,7 +1043,8 @@ static void test_multiqueue(void *obj, void *arg, QGuestAllocator *alloc) static uint64_t vu_net_get_features(TestServer *s) { - uint64_t features = 0x1ULL << VHOST_F_LOG_ALL | + uint64_t features = 0x1ULL << VIRTIO_F_VERSION_1 | + 0x1ULL << VHOST_F_LOG_ALL | 0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES; if (s->queues > 1) { diff --git a/tests/qtest/vmcoreinfo-test.c b/tests/qtest/vmcoreinfo-test.c new file mode 100644 index 0000000000..dcf3b5ae05 --- /dev/null +++ b/tests/qtest/vmcoreinfo-test.c @@ -0,0 +1,90 @@ +/* + * qtest vmcoreinfo test case + * + * Copyright Red Hat. 2025. + * + * Authors: + * Ani Sinha <anisinha@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/units.h" +#include "libqos/libqos-pc.h" +#include "libqtest.h" +#include "standard-headers/linux/qemu_fw_cfg.h" +#include "libqos/fw_cfg.h" +#include "qemu/bswap.h" +#include "hw/misc/vmcoreinfo.h" + +static void test_vmcoreinfo_write_basic(void) +{ + QFWCFG *fw_cfg; + QOSState *qs; + FWCfgVMCoreInfo info; + size_t filesize; + uint16_t guest_format; + uint16_t host_format; + uint32_t size; + uint64_t paddr; + + qs = qtest_pc_boot("-device vmcoreinfo"); + fw_cfg = pc_fw_cfg_init(qs->qts); + + memset(&info, 0 , sizeof(info)); + /* read vmcoreinfo and read back the host format */ + filesize = qfw_cfg_read_file(fw_cfg, qs, FW_CFG_VMCOREINFO_FILENAME, + &info, sizeof(info)); + g_assert_cmpint(filesize, ==, sizeof(info)); + + host_format = le16_to_cpu(info.host_format); + g_assert_cmpint(host_format, ==, FW_CFG_VMCOREINFO_FORMAT_ELF); + + memset(&info, 0 , sizeof(info)); + info.guest_format = cpu_to_le16(FW_CFG_VMCOREINFO_FORMAT_ELF); + info.size = cpu_to_le32(1 * MiB); + info.paddr = cpu_to_le64(0xffffff00); + info.host_format = cpu_to_le16(host_format); + + /* write the values to the host */ + filesize = qfw_cfg_write_file(fw_cfg, qs, FW_CFG_VMCOREINFO_FILENAME, + &info, sizeof(info)); + g_assert_cmpint(filesize, ==, sizeof(info)); + + memset(&info, 0 , sizeof(info)); + + /* now read back the values we wrote and compare that they are the same */ + filesize = qfw_cfg_read_file(fw_cfg, qs, FW_CFG_VMCOREINFO_FILENAME, + &info, sizeof(info)); + g_assert_cmpint(filesize, ==, sizeof(info)); + + size = le32_to_cpu(info.size); + paddr = le64_to_cpu(info.paddr); + guest_format = le16_to_cpu(info.guest_format); + + g_assert_cmpint(size, ==, 1 * MiB); + g_assert_cmpint(paddr, ==, 0xffffff00); + g_assert_cmpint(guest_format, ==, FW_CFG_VMCOREINFO_FORMAT_ELF); + + pc_fw_cfg_uninit(fw_cfg); + qtest_shutdown(qs); +} + +int main(int argc, char **argv) +{ + const char *arch = qtest_get_arch(); + + g_test_init(&argc, &argv, NULL); + + if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) { + /* skip for non-x86 */ + exit(EXIT_SUCCESS); + } + + qtest_add_func("vmcoreinfo/basic-write", + test_vmcoreinfo_write_basic); + + return g_test_run(); +} diff --git a/tests/unit/test-char.c b/tests/unit/test-char.c index 98a60d86b1..85b350a9b7 100644 --- a/tests/unit/test-char.c +++ b/tests/unit/test-char.c @@ -359,6 +359,403 @@ static void char_mux_test(void) qmp_chardev_remove("mux-label", &error_abort); } +static void char_hub_test(void) +{ + QemuOpts *opts; + Chardev *hub, *chr1, *chr2, *base; + char *data; + FeHandler h = { 0, false, 0, false, }; + Error *error = NULL; + CharBackend chr_be; + int ret, i; + +#define RB_SIZE 128 + + /* + * Create invalid hub + * 1. Create hub without a 'chardevs.N' defined (expect error) + */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "hub0", + 1, &error_abort); + qemu_opt_set(opts, "backend", "hub", &error_abort); + hub = qemu_chr_new_from_opts(opts, NULL, &error); + g_assert_cmpstr(error_get_pretty(error), ==, + "hub: 'chardevs' list is not defined"); + error_free(error); + error = NULL; + qemu_opts_del(opts); + + /* + * Create invalid hub + * 1. Create chardev with embedded mux: 'mux=on' + * 2. Create hub which refers mux + * 3. Create hub which refers chardev already attached + * to the mux (already in use, expect error) + */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "chr0", + 1, &error_abort); + qemu_opt_set(opts, "mux", "on", &error_abort); + qemu_opt_set(opts, "backend", "ringbuf", &error_abort); + qemu_opt_set(opts, "size", stringify(RB_SIZE), &error_abort); + base = qemu_chr_new_from_opts(opts, NULL, &error_abort); + g_assert_nonnull(base); + qemu_opts_del(opts); + + opts = qemu_opts_create(qemu_find_opts("chardev"), "hub0", + 1, &error_abort); + qemu_opt_set(opts, "backend", "hub", &error_abort); + qemu_opt_set(opts, "chardevs.0", "chr0", &error_abort); + hub = qemu_chr_new_from_opts(opts, NULL, &error); + g_assert_cmpstr(error_get_pretty(error), ==, + "hub: multiplexers and hub devices can't be " + "stacked, check chardev 'chr0', chardev should " + "not be a hub device or have 'mux=on' enabled"); + error_free(error); + error = NULL; + qemu_opts_del(opts); + + opts = qemu_opts_create(qemu_find_opts("chardev"), "hub0", + 1, &error_abort); + qemu_opt_set(opts, "backend", "hub", &error_abort); + qemu_opt_set(opts, "chardevs.0", "chr0-base", &error_abort); + hub = qemu_chr_new_from_opts(opts, NULL, &error); + g_assert_cmpstr(error_get_pretty(error), ==, + "chardev 'chr0-base' is already in use"); + error_free(error); + error = NULL; + qemu_opts_del(opts); + + /* Finalize chr0 */ + qmp_chardev_remove("chr0", &error_abort); + + /* + * Create invalid hub with more than maximum allowed backends + * 1. Create more than maximum allowed 'chardevs.%d' options for + * hub (expect error) + */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "hub0", + 1, &error_abort); + for (i = 0; i < 10; i++) { + char key[32], val[32]; + + snprintf(key, sizeof(key), "chardevs.%d", i); + snprintf(val, sizeof(val), "chr%d", i); + qemu_opt_set(opts, key, val, &error); + if (error) { + char buf[64]; + + snprintf(buf, sizeof(buf), "Invalid parameter 'chardevs.%d'", i); + g_assert_cmpstr(error_get_pretty(error), ==, buf); + error_free(error); + break; + } + } + g_assert_nonnull(error); + error = NULL; + qemu_opts_del(opts); + + /* + * Create hub with 2 backend chardevs and 1 frontend and perform + * data aggregation + * 1. Create 2 ringbuf backend chardevs + * 2. Create 1 frontend + * 3. Create hub which refers 2 backend chardevs + * 4. Attach hub to a frontend + * 5. Attach hub to a frontend second time (expect error) + * 6. Perform data aggregation + * 7. Remove chr1 ("chr1 is busy", expect error) + * 8. Remove hub0 ("hub0 is busy", expect error); + * 9. Finilize frontend, hub and backend chardevs in correct order + */ + + /* Create first chardev */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "chr1", + 1, &error_abort); + qemu_opt_set(opts, "backend", "ringbuf", &error_abort); + qemu_opt_set(opts, "size", stringify(RB_SIZE), &error_abort); + chr1 = qemu_chr_new_from_opts(opts, NULL, &error_abort); + g_assert_nonnull(chr1); + qemu_opts_del(opts); + + /* Create second chardev */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "chr2", + 1, &error_abort); + qemu_opt_set(opts, "backend", "ringbuf", &error_abort); + qemu_opt_set(opts, "size", stringify(RB_SIZE), &error_abort); + chr2 = qemu_chr_new_from_opts(opts, NULL, &error_abort); + g_assert_nonnull(chr2); + qemu_opts_del(opts); + + /* Create hub0 and refer 2 backend chardevs */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "hub0", + 1, &error_abort); + qemu_opt_set(opts, "backend", "hub", &error_abort); + qemu_opt_set(opts, "chardevs.0", "chr1", &error_abort); + qemu_opt_set(opts, "chardevs.1", "chr2", &error_abort); + hub = qemu_chr_new_from_opts(opts, NULL, &error_abort); + g_assert_nonnull(hub); + qemu_opts_del(opts); + + /* Attach hub to a frontend */ + qemu_chr_fe_init(&chr_be, hub, &error_abort); + qemu_chr_fe_set_handlers(&chr_be, + fe_can_read, + fe_read, + fe_event, + NULL, + &h, + NULL, true); + + /* Fails second time */ + qemu_chr_fe_init(&chr_be, hub, &error); + g_assert_cmpstr(error_get_pretty(error), ==, "chardev 'hub0' is already in use"); + error_free(error); + error = NULL; + + /* Write to backend, chr1 */ + base = qemu_chr_find("chr1"); + g_assert_cmpint(qemu_chr_be_can_write(base), !=, 0); + + qemu_chr_be_write(base, (void *)"hello", 6); + g_assert_cmpint(h.read_count, ==, 6); + g_assert_cmpstr(h.read_buf, ==, "hello"); + h.read_count = 0; + + /* Write to backend, chr2 */ + base = qemu_chr_find("chr2"); + g_assert_cmpint(qemu_chr_be_can_write(base), !=, 0); + + qemu_chr_be_write(base, (void *)"olleh", 6); + g_assert_cmpint(h.read_count, ==, 6); + g_assert_cmpstr(h.read_buf, ==, "olleh"); + h.read_count = 0; + + /* Write to frontend, chr_be */ + ret = qemu_chr_fe_write(&chr_be, (void *)"heyhey", 6); + g_assert_cmpint(ret, ==, 6); + + data = qmp_ringbuf_read("chr1", RB_SIZE, false, 0, &error_abort); + g_assert_cmpint(strlen(data), ==, 6); + g_assert_cmpstr(data, ==, "heyhey"); + g_free(data); + + data = qmp_ringbuf_read("chr2", RB_SIZE, false, 0, &error_abort); + g_assert_cmpint(strlen(data), ==, 6); + g_assert_cmpstr(data, ==, "heyhey"); + g_free(data); + + /* Can't be removed, depends on hub0 */ + qmp_chardev_remove("chr1", &error); + g_assert_cmpstr(error_get_pretty(error), ==, "Chardev 'chr1' is busy"); + error_free(error); + error = NULL; + + /* Can't be removed, depends on frontend chr_be */ + qmp_chardev_remove("hub0", &error); + g_assert_cmpstr(error_get_pretty(error), ==, "Chardev 'hub0' is busy"); + error_free(error); + error = NULL; + + /* Finalize frontend */ + qemu_chr_fe_deinit(&chr_be, false); + + /* Finalize hub0 */ + qmp_chardev_remove("hub0", &error_abort); + + /* Finalize backend chardevs */ + qmp_chardev_remove("chr1", &error_abort); + qmp_chardev_remove("chr2", &error_abort); + +#ifndef _WIN32 + /* + * Create 3 backend chardevs to simulate EAGAIN and watcher. + * Mainly copied from char_pipe_test(). + * 1. Create 2 ringbuf backend chardevs + * 2. Create 1 pipe backend chardev + * 3. Create 1 frontend + * 4. Create hub which refers 2 backend chardevs + * 5. Attach hub to a frontend + * 6. Perform data aggregation and check watcher + * 7. Finilize frontend, hub and backend chardevs in correct order + */ + { + gchar *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL); + gchar *in, *out, *pipe = g_build_filename(tmp_path, "pipe", NULL); + Chardev *chr3; + int fd, len; + char buf[128]; + + in = g_strdup_printf("%s.in", pipe); + if (mkfifo(in, 0600) < 0) { + abort(); + } + out = g_strdup_printf("%s.out", pipe); + if (mkfifo(out, 0600) < 0) { + abort(); + } + + /* Create first chardev */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "chr1", + 1, &error_abort); + qemu_opt_set(opts, "backend", "ringbuf", &error_abort); + qemu_opt_set(opts, "size", stringify(RB_SIZE), &error_abort); + chr1 = qemu_chr_new_from_opts(opts, NULL, &error_abort); + g_assert_nonnull(chr1); + qemu_opts_del(opts); + + /* Create second chardev */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "chr2", + 1, &error_abort); + qemu_opt_set(opts, "backend", "ringbuf", &error_abort); + qemu_opt_set(opts, "size", stringify(RB_SIZE), &error_abort); + chr2 = qemu_chr_new_from_opts(opts, NULL, &error_abort); + g_assert_nonnull(chr2); + qemu_opts_del(opts); + + /* Create third chardev */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "chr3", + 1, &error_abort); + qemu_opt_set(opts, "backend", "pipe", &error_abort); + qemu_opt_set(opts, "path", pipe, &error_abort); + chr3 = qemu_chr_new_from_opts(opts, NULL, &error_abort); + g_assert_nonnull(chr3); + + /* Create hub0 and refer 3 backend chardevs */ + opts = qemu_opts_create(qemu_find_opts("chardev"), "hub0", + 1, &error_abort); + qemu_opt_set(opts, "backend", "hub", &error_abort); + qemu_opt_set(opts, "chardevs.0", "chr1", &error_abort); + qemu_opt_set(opts, "chardevs.1", "chr2", &error_abort); + qemu_opt_set(opts, "chardevs.2", "chr3", &error_abort); + hub = qemu_chr_new_from_opts(opts, NULL, &error_abort); + g_assert_nonnull(hub); + qemu_opts_del(opts); + + /* Attach hub to a frontend */ + qemu_chr_fe_init(&chr_be, hub, &error_abort); + qemu_chr_fe_set_handlers(&chr_be, + fe_can_read, + fe_read, + fe_event, + NULL, + &h, + NULL, true); + + /* Write to frontend, chr_be */ + ret = qemu_chr_fe_write(&chr_be, (void *)"thisis", 6); + g_assert_cmpint(ret, ==, 6); + + data = qmp_ringbuf_read("chr1", RB_SIZE, false, 0, &error_abort); + g_assert_cmpint(strlen(data), ==, 6); + g_assert_cmpstr(data, ==, "thisis"); + g_free(data); + + data = qmp_ringbuf_read("chr2", RB_SIZE, false, 0, &error_abort); + g_assert_cmpint(strlen(data), ==, 6); + g_assert_cmpstr(data, ==, "thisis"); + g_free(data); + + fd = open(out, O_RDWR); + ret = read(fd, buf, sizeof(buf)); + g_assert_cmpint(ret, ==, 6); + buf[ret] = 0; + g_assert_cmpstr(buf, ==, "thisis"); + close(fd); + + /* Add watch. 0 indicates no watches if nothing to wait for */ + ret = qemu_chr_fe_add_watch(&chr_be, G_IO_OUT | G_IO_HUP, + NULL, NULL); + g_assert_cmpint(ret, ==, 0); + + /* + * Write to frontend, chr_be, until EAGAIN. Make sure length is + * power of two to fit nicely the whole pipe buffer. + */ + len = 0; + while ((ret = qemu_chr_fe_write(&chr_be, (void *)"thisisit", 8)) + != -1) { + len += ret; + } + g_assert_cmpint(errno, ==, EAGAIN); + + /* Further all writes should cause EAGAIN */ + ret = qemu_chr_fe_write(&chr_be, (void *)"b", 1); + g_assert_cmpint(ret, ==, -1); + g_assert_cmpint(errno, ==, EAGAIN); + + /* + * Add watch. Non 0 indicates we have a blocked chardev, which + * can wakes us up when write is possible. + */ + ret = qemu_chr_fe_add_watch(&chr_be, G_IO_OUT | G_IO_HUP, + NULL, NULL); + g_assert_cmpint(ret, !=, 0); + g_source_remove(ret); + + /* Drain pipe and ring buffers */ + fd = open(out, O_RDWR); + while ((ret = read(fd, buf, MIN(sizeof(buf), len))) != -1 && len > 0) { + len -= ret; + } + close(fd); + + data = qmp_ringbuf_read("chr1", RB_SIZE, false, 0, &error_abort); + g_assert_cmpint(strlen(data), ==, 128); + g_free(data); + + data = qmp_ringbuf_read("chr2", RB_SIZE, false, 0, &error_abort); + g_assert_cmpint(strlen(data), ==, 128); + g_free(data); + + /* + * Now we are good to go, first repeat "lost" sequence, which + * was already consumed and drained by the ring buffers, but + * pipe have not recieved that yet. + */ + ret = qemu_chr_fe_write(&chr_be, (void *)"thisisit", 8); + g_assert_cmpint(ret, ==, 8); + + ret = qemu_chr_fe_write(&chr_be, (void *)"streamisrestored", 16); + g_assert_cmpint(ret, ==, 16); + + data = qmp_ringbuf_read("chr1", RB_SIZE, false, 0, &error_abort); + g_assert_cmpint(strlen(data), ==, 16); + /* Only last 16 bytes, see big comment above */ + g_assert_cmpstr(data, ==, "streamisrestored"); + g_free(data); + + data = qmp_ringbuf_read("chr2", RB_SIZE, false, 0, &error_abort); + g_assert_cmpint(strlen(data), ==, 16); + /* Only last 16 bytes, see big comment above */ + g_assert_cmpstr(data, ==, "streamisrestored"); + g_free(data); + + fd = open(out, O_RDWR); + ret = read(fd, buf, sizeof(buf)); + g_assert_cmpint(ret, ==, 24); + buf[ret] = 0; + /* Both 8 and 16 bytes */ + g_assert_cmpstr(buf, ==, "thisisitstreamisrestored"); + close(fd); + + g_free(in); + g_free(out); + g_free(tmp_path); + g_free(pipe); + + /* Finalize frontend */ + qemu_chr_fe_deinit(&chr_be, false); + + /* Finalize hub0 */ + qmp_chardev_remove("hub0", &error_abort); + + /* Finalize backend chardevs */ + qmp_chardev_remove("chr1", &error_abort); + qmp_chardev_remove("chr2", &error_abort); + qmp_chardev_remove("chr3", &error_abort); + } +#endif +} static void websock_server_read(void *opaque, const uint8_t *buf, int size) { @@ -1507,6 +1904,7 @@ int main(int argc, char **argv) g_test_add_func("/char/invalid", char_invalid_test); g_test_add_func("/char/ringbuf", char_ringbuf_test); g_test_add_func("/char/mux", char_mux_test); + g_test_add_func("/char/hub", char_hub_test); #ifdef _WIN32 g_test_add_func("/char/console/subprocess", char_console_test_subprocess); g_test_add_func("/char/console", char_console_test); |