diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/power/cpupower/lib/cpufreq.c | 19 | ||||
| -rw-r--r-- | tools/power/cpupower/lib/cpufreq.h | 16 | ||||
| -rw-r--r-- | tools/power/cpupower/utils/cpufreq-info.c | 42 | ||||
| -rw-r--r-- | tools/testing/nvdimm/Kbuild | 7 | ||||
| -rw-r--r-- | tools/testing/nvdimm/dax-dev.c | 16 | ||||
| -rw-r--r-- | tools/testing/selftests/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/.gitignore | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/vmx_close_while_nested_test.c | 95 | ||||
| -rw-r--r-- | tools/testing/selftests/pidfd/Makefile | 6 | ||||
| -rw-r--r-- | tools/testing/selftests/pidfd/pidfd_test.c | 381 | ||||
| -rw-r--r-- | tools/testing/selftests/proc/proc-pid-vm.c | 49 |
12 files changed, 590 insertions, 44 deletions
diff --git a/tools/power/cpupower/lib/cpufreq.c b/tools/power/cpupower/lib/cpufreq.c index 0c0f3e3f0d80..80650497fb80 100644 --- a/tools/power/cpupower/lib/cpufreq.c +++ b/tools/power/cpupower/lib/cpufreq.c @@ -333,17 +333,20 @@ void cpufreq_put_available_governors(struct cpufreq_available_governors *any) } -struct cpufreq_available_frequencies -*cpufreq_get_available_frequencies(unsigned int cpu) +struct cpufreq_frequencies +*cpufreq_get_frequencies(const char *type, unsigned int cpu) { - struct cpufreq_available_frequencies *first = NULL; - struct cpufreq_available_frequencies *current = NULL; + struct cpufreq_frequencies *first = NULL; + struct cpufreq_frequencies *current = NULL; char one_value[SYSFS_PATH_MAX]; char linebuf[MAX_LINE_LEN]; + char fname[MAX_LINE_LEN]; unsigned int pos, i; unsigned int len; - len = sysfs_cpufreq_read_file(cpu, "scaling_available_frequencies", + snprintf(fname, MAX_LINE_LEN, "scaling_%s_frequencies", type); + + len = sysfs_cpufreq_read_file(cpu, fname, linebuf, sizeof(linebuf)); if (len == 0) return NULL; @@ -389,9 +392,9 @@ struct cpufreq_available_frequencies return NULL; } -void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies - *any) { - struct cpufreq_available_frequencies *tmp, *next; +void cpufreq_put_frequencies(struct cpufreq_frequencies *any) +{ + struct cpufreq_frequencies *tmp, *next; if (!any) return; diff --git a/tools/power/cpupower/lib/cpufreq.h b/tools/power/cpupower/lib/cpufreq.h index 60beaf5ed2ea..775738269cbf 100644 --- a/tools/power/cpupower/lib/cpufreq.h +++ b/tools/power/cpupower/lib/cpufreq.h @@ -28,10 +28,10 @@ struct cpufreq_available_governors { struct cpufreq_available_governors *first; }; -struct cpufreq_available_frequencies { +struct cpufreq_frequencies { unsigned long frequency; - struct cpufreq_available_frequencies *next; - struct cpufreq_available_frequencies *first; + struct cpufreq_frequencies *next; + struct cpufreq_frequencies *first; }; @@ -129,14 +129,14 @@ void cpufreq_put_available_governors( * * Only present on _some_ ->target() cpufreq drivers. For information purposes * only. Please free allocated memory by calling - * cpufreq_put_available_frequencies after use. + * cpufreq_put_frequencies after use. */ -struct cpufreq_available_frequencies -*cpufreq_get_available_frequencies(unsigned int cpu); +struct cpufreq_frequencies +*cpufreq_get_frequencies(const char *type, unsigned int cpu); -void cpufreq_put_available_frequencies( - struct cpufreq_available_frequencies *first); +void cpufreq_put_frequencies( + struct cpufreq_frequencies *first); /* determine affected CPUs diff --git a/tools/power/cpupower/utils/cpufreq-info.c b/tools/power/cpupower/utils/cpufreq-info.c index c3f39d5128ee..10290b308797 100644 --- a/tools/power/cpupower/utils/cpufreq-info.c +++ b/tools/power/cpupower/utils/cpufreq-info.c @@ -161,19 +161,12 @@ static void print_duration(unsigned long duration) return; } -/* --boost / -b */ - -static int get_boost_mode(unsigned int cpu) +static int get_boost_mode_x86(unsigned int cpu) { int support, active, b_states = 0, ret, pstate_no, i; /* ToDo: Make this more global */ unsigned long pstates[MAX_HW_PSTATES] = {0,}; - if (cpupower_cpu_info.vendor != X86_VENDOR_AMD && - cpupower_cpu_info.vendor != X86_VENDOR_HYGON && - cpupower_cpu_info.vendor != X86_VENDOR_INTEL) - return 0; - ret = cpufreq_has_boost_support(cpu, &support, &active, &b_states); if (ret) { printf(_("Error while evaluating Boost Capabilities" @@ -248,6 +241,33 @@ static int get_boost_mode(unsigned int cpu) return 0; } +/* --boost / -b */ + +static int get_boost_mode(unsigned int cpu) +{ + struct cpufreq_frequencies *freqs; + + if (cpupower_cpu_info.vendor == X86_VENDOR_AMD || + cpupower_cpu_info.vendor == X86_VENDOR_HYGON || + cpupower_cpu_info.vendor == X86_VENDOR_INTEL) + return get_boost_mode_x86(cpu); + + freqs = cpufreq_get_frequencies("boost", cpu); + if (freqs) { + printf(_(" boost frequency steps: ")); + while (freqs->next) { + print_speed(freqs->frequency); + printf(", "); + freqs = freqs->next; + } + print_speed(freqs->frequency); + printf("\n"); + cpufreq_put_frequencies(freqs); + } + + return 0; +} + /* --freq / -f */ static int get_freq_kernel(unsigned int cpu, unsigned int human) @@ -456,7 +476,7 @@ static int get_latency(unsigned int cpu, unsigned int human) static void debug_output_one(unsigned int cpu) { - struct cpufreq_available_frequencies *freqs; + struct cpufreq_frequencies *freqs; get_driver(cpu); get_related_cpus(cpu); @@ -464,7 +484,7 @@ static void debug_output_one(unsigned int cpu) get_latency(cpu, 1); get_hardware_limits(cpu, 1); - freqs = cpufreq_get_available_frequencies(cpu); + freqs = cpufreq_get_frequencies("available", cpu); if (freqs) { printf(_(" available frequency steps: ")); while (freqs->next) { @@ -474,7 +494,7 @@ static void debug_output_one(unsigned int cpu) } print_speed(freqs->frequency); printf("\n"); - cpufreq_put_available_frequencies(freqs); + cpufreq_put_frequencies(freqs); } get_available_governors(cpu); diff --git a/tools/testing/nvdimm/Kbuild b/tools/testing/nvdimm/Kbuild index 10ddf223055b..e1286d2cdfbf 100644 --- a/tools/testing/nvdimm/Kbuild +++ b/tools/testing/nvdimm/Kbuild @@ -35,6 +35,8 @@ obj-$(CONFIG_DAX) += dax.o endif obj-$(CONFIG_DEV_DAX) += device_dax.o obj-$(CONFIG_DEV_DAX_PMEM) += dax_pmem.o +obj-$(CONFIG_DEV_DAX_PMEM) += dax_pmem_core.o +obj-$(CONFIG_DEV_DAX_PMEM_COMPAT) += dax_pmem_compat.o nfit-y := $(ACPI_SRC)/core.o nfit-y += $(ACPI_SRC)/intel.o @@ -57,6 +59,7 @@ nd_e820-y := $(NVDIMM_SRC)/e820.o nd_e820-y += config_check.o dax-y := $(DAX_SRC)/super.o +dax-y += $(DAX_SRC)/bus.o dax-y += config_check.o device_dax-y := $(DAX_SRC)/device.o @@ -64,7 +67,9 @@ device_dax-y += dax-dev.o device_dax-y += device_dax_test.o device_dax-y += config_check.o -dax_pmem-y := $(DAX_SRC)/pmem.o +dax_pmem-y := $(DAX_SRC)/pmem/pmem.o +dax_pmem_core-y := $(DAX_SRC)/pmem/core.o +dax_pmem_compat-y := $(DAX_SRC)/pmem/compat.o dax_pmem-y += config_check.o libnvdimm-y := $(NVDIMM_SRC)/core.o diff --git a/tools/testing/nvdimm/dax-dev.c b/tools/testing/nvdimm/dax-dev.c index 36ee3d8797c3..f36e708265b8 100644 --- a/tools/testing/nvdimm/dax-dev.c +++ b/tools/testing/nvdimm/dax-dev.c @@ -17,20 +17,11 @@ phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff, unsigned long size) { - struct resource *res; + struct resource *res = &dev_dax->region->res; phys_addr_t addr; - int i; - for (i = 0; i < dev_dax->num_resources; i++) { - res = &dev_dax->res[i]; - addr = pgoff * PAGE_SIZE + res->start; - if (addr >= res->start && addr <= res->end) - break; - pgoff -= PHYS_PFN(resource_size(res)); - } - - if (i < dev_dax->num_resources) { - res = &dev_dax->res[i]; + addr = pgoff * PAGE_SIZE + res->start; + if (addr >= res->start && addr <= res->end) { if (addr + size - 1 <= res->end) { if (get_nfit_res(addr)) { struct page *page; @@ -44,6 +35,5 @@ phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff, return addr; } } - return -1; } diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index fb5758ac469e..971fc8428117 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -32,6 +32,7 @@ TARGETS += net TARGETS += netfilter TARGETS += networking/timestamping TARGETS += nsfs +TARGETS += pidfd TARGETS += powerpc TARGETS += proc TARGETS += pstore diff --git a/tools/testing/selftests/kvm/.gitignore b/tools/testing/selftests/kvm/.gitignore index 6210ba41c29e..2689d1ea6d7a 100644 --- a/tools/testing/selftests/kvm/.gitignore +++ b/tools/testing/selftests/kvm/.gitignore @@ -3,6 +3,7 @@ /x86_64/platform_info_test /x86_64/set_sregs_test /x86_64/sync_regs_test +/x86_64/vmx_close_while_nested_test /x86_64/vmx_tsc_adjust_test /x86_64/state_test /dirty_log_test diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index f9a0e9938480..3c1f4bdf9000 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -16,6 +16,7 @@ TEST_GEN_PROGS_x86_64 += x86_64/cr4_cpuid_sync_test TEST_GEN_PROGS_x86_64 += x86_64/state_test TEST_GEN_PROGS_x86_64 += x86_64/evmcs_test TEST_GEN_PROGS_x86_64 += x86_64/hyperv_cpuid +TEST_GEN_PROGS_x86_64 += x86_64/vmx_close_while_nested_test TEST_GEN_PROGS_x86_64 += dirty_log_test TEST_GEN_PROGS_x86_64 += clear_dirty_log_test diff --git a/tools/testing/selftests/kvm/x86_64/vmx_close_while_nested_test.c b/tools/testing/selftests/kvm/x86_64/vmx_close_while_nested_test.c new file mode 100644 index 000000000000..6edec6fd790b --- /dev/null +++ b/tools/testing/selftests/kvm/x86_64/vmx_close_while_nested_test.c @@ -0,0 +1,95 @@ +/* + * vmx_close_while_nested + * + * Copyright (C) 2019, Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2. + * + * Verify that nothing bad happens if a KVM user exits with open + * file descriptors while executing a nested guest. + */ + +#include "test_util.h" +#include "kvm_util.h" +#include "processor.h" +#include "vmx.h" + +#include <string.h> +#include <sys/ioctl.h> + +#include "kselftest.h" + +#define VCPU_ID 5 + +enum { + PORT_L0_EXIT = 0x2000, +}; + +/* The virtual machine object. */ +static struct kvm_vm *vm; + +static void l2_guest_code(void) +{ + /* Exit to L0 */ + asm volatile("inb %%dx, %%al" + : : [port] "d" (PORT_L0_EXIT) : "rax"); +} + +static void l1_guest_code(struct vmx_pages *vmx_pages) +{ +#define L2_GUEST_STACK_SIZE 64 + unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE]; + uint32_t control; + uintptr_t save_cr3; + + GUEST_ASSERT(prepare_for_vmx_operation(vmx_pages)); + GUEST_ASSERT(load_vmcs(vmx_pages)); + + /* Prepare the VMCS for L2 execution. */ + prepare_vmcs(vmx_pages, l2_guest_code, + &l2_guest_stack[L2_GUEST_STACK_SIZE]); + + GUEST_ASSERT(!vmlaunch()); + GUEST_ASSERT(0); +} + +int main(int argc, char *argv[]) +{ + struct vmx_pages *vmx_pages; + vm_vaddr_t vmx_pages_gva; + struct kvm_cpuid_entry2 *entry = kvm_get_supported_cpuid_entry(1); + + if (!(entry->ecx & CPUID_VMX)) { + fprintf(stderr, "nested VMX not enabled, skipping test\n"); + exit(KSFT_SKIP); + } + + vm = vm_create_default(VCPU_ID, 0, (void *) l1_guest_code); + vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid()); + + /* Allocate VMX pages and shared descriptors (vmx_pages). */ + vmx_pages = vcpu_alloc_vmx(vm, &vmx_pages_gva); + vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva); + + for (;;) { + volatile struct kvm_run *run = vcpu_state(vm, VCPU_ID); + struct ucall uc; + + vcpu_run(vm, VCPU_ID); + TEST_ASSERT(run->exit_reason == KVM_EXIT_IO, + "Got exit_reason other than KVM_EXIT_IO: %u (%s)\n", + run->exit_reason, + exit_reason_str(run->exit_reason)); + + if (run->io.port == PORT_L0_EXIT) + break; + + switch (get_ucall(vm, VCPU_ID, &uc)) { + case UCALL_ABORT: + TEST_ASSERT(false, "%s", (const char *)uc.args[0]); + /* NOT REACHED */ + default: + TEST_ASSERT(false, "Unknown ucall 0x%x.", uc.cmd); + } + } +} diff --git a/tools/testing/selftests/pidfd/Makefile b/tools/testing/selftests/pidfd/Makefile new file mode 100644 index 000000000000..deaf8073bc06 --- /dev/null +++ b/tools/testing/selftests/pidfd/Makefile @@ -0,0 +1,6 @@ +CFLAGS += -g -I../../../../usr/include/ + +TEST_GEN_PROGS := pidfd_test + +include ../lib.mk + diff --git a/tools/testing/selftests/pidfd/pidfd_test.c b/tools/testing/selftests/pidfd/pidfd_test.c new file mode 100644 index 000000000000..d59378a93782 --- /dev/null +++ b/tools/testing/selftests/pidfd/pidfd_test.c @@ -0,0 +1,381 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#define _GNU_SOURCE +#include <errno.h> +#include <fcntl.h> +#include <linux/types.h> +#include <sched.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <syscall.h> +#include <sys/mount.h> +#include <sys/wait.h> +#include <unistd.h> + +#include "../kselftest.h" + +static inline int sys_pidfd_send_signal(int pidfd, int sig, siginfo_t *info, + unsigned int flags) +{ + return syscall(__NR_pidfd_send_signal, pidfd, sig, info, flags); +} + +static int signal_received; + +static void set_signal_received_on_sigusr1(int sig) +{ + if (sig == SIGUSR1) + signal_received = 1; +} + +/* + * Straightforward test to see whether pidfd_send_signal() works is to send + * a signal to ourself. + */ +static int test_pidfd_send_signal_simple_success(void) +{ + int pidfd, ret; + const char *test_name = "pidfd_send_signal send SIGUSR1"; + + pidfd = open("/proc/self", O_DIRECTORY | O_CLOEXEC); + if (pidfd < 0) + ksft_exit_fail_msg( + "%s test: Failed to open process file descriptor\n", + test_name); + + signal(SIGUSR1, set_signal_received_on_sigusr1); + + ret = sys_pidfd_send_signal(pidfd, SIGUSR1, NULL, 0); + close(pidfd); + if (ret < 0) + ksft_exit_fail_msg("%s test: Failed to send signal\n", + test_name); + + if (signal_received != 1) + ksft_exit_fail_msg("%s test: Failed to receive signal\n", + test_name); + + signal_received = 0; + ksft_test_result_pass("%s test: Sent signal\n", test_name); + return 0; +} + +static int wait_for_pid(pid_t pid) +{ + int status, ret; + +again: + ret = waitpid(pid, &status, 0); + if (ret == -1) { + if (errno == EINTR) + goto again; + + return -1; + } + + if (ret != pid) + goto again; + + if (!WIFEXITED(status)) + return -1; + + return WEXITSTATUS(status); +} + +static int test_pidfd_send_signal_exited_fail(void) +{ + int pidfd, ret, saved_errno; + char buf[256]; + pid_t pid; + const char *test_name = "pidfd_send_signal signal exited process"; + + pid = fork(); + if (pid < 0) + ksft_exit_fail_msg("%s test: Failed to create new process\n", + test_name); + + if (pid == 0) + _exit(EXIT_SUCCESS); + + snprintf(buf, sizeof(buf), "/proc/%d", pid); + + pidfd = open(buf, O_DIRECTORY | O_CLOEXEC); + + (void)wait_for_pid(pid); + + if (pidfd < 0) + ksft_exit_fail_msg( + "%s test: Failed to open process file descriptor\n", + test_name); + + ret = sys_pidfd_send_signal(pidfd, 0, NULL, 0); + saved_errno = errno; + close(pidfd); + if (ret == 0) + ksft_exit_fail_msg( + "%s test: Managed to send signal to process even though it should have failed\n", + test_name); + + if (saved_errno != ESRCH) + ksft_exit_fail_msg( + "%s test: Expected to receive ESRCH as errno value but received %d instead\n", + test_name, saved_errno); + + ksft_test_result_pass("%s test: Failed to send signal as expected\n", + test_name); + return 0; +} + +/* + * The kernel reserves 300 pids via RESERVED_PIDS in kernel/pid.c + * That means, when it wraps around any pid < 300 will be skipped. + * So we need to use a pid > 300 in order to test recycling. + */ +#define PID_RECYCLE 1000 + +/* + * Maximum number of cycles we allow. This is equivalent to PID_MAX_DEFAULT. + * If users set a higher limit or we have cycled PIDFD_MAX_DEFAULT number of + * times then we skip the test to not go into an infinite loop or block for a + * long time. + */ +#define PIDFD_MAX_DEFAULT 0x8000 + +/* + * Define a few custom error codes for the child process to clearly indicate + * what is happening. This way we can tell the difference between a system + * error, a test error, etc. + */ +#define PIDFD_PASS 0 +#define PIDFD_FAIL 1 +#define PIDFD_ERROR 2 +#define PIDFD_SKIP 3 +#define PIDFD_XFAIL 4 + +static int test_pidfd_send_signal_recycled_pid_fail(void) +{ + int i, ret; + pid_t pid1; + const char *test_name = "pidfd_send_signal signal recycled pid"; + + ret = unshare(CLONE_NEWPID); + if (ret < 0) + ksft_exit_fail_msg("%s test: Failed to unshare pid namespace\n", + test_name); + + ret = unshare(CLONE_NEWNS); + if (ret < 0) + ksft_exit_fail_msg( + "%s test: Failed to unshare mount namespace\n", + test_name); + + ret = mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, 0); + if (ret < 0) + ksft_exit_fail_msg("%s test: Failed to remount / private\n", + test_name); + + /* pid 1 in new pid namespace */ + pid1 = fork(); + if (pid1 < 0) + ksft_exit_fail_msg("%s test: Failed to create new process\n", + test_name); + + if (pid1 == 0) { + char buf[256]; + pid_t pid2; + int pidfd = -1; + + (void)umount2("/proc", MNT_DETACH); + ret = mount("proc", "/proc", "proc", 0, NULL); + if (ret < 0) + _exit(PIDFD_ERROR); + + /* grab pid PID_RECYCLE */ + for (i = 0; i <= PIDFD_MAX_DEFAULT; i++) { + pid2 = fork(); + if (pid2 < 0) + _exit(PIDFD_ERROR); + + if (pid2 == 0) + _exit(PIDFD_PASS); + + if (pid2 == PID_RECYCLE) { + snprintf(buf, sizeof(buf), "/proc/%d", pid2); + ksft_print_msg("pid to recycle is %d\n", pid2); + pidfd = open(buf, O_DIRECTORY | O_CLOEXEC); + } + + if (wait_for_pid(pid2)) + _exit(PIDFD_ERROR); + + if (pid2 >= PID_RECYCLE) + break; + } + + /* + * We want to be as predictable as we can so if we haven't been + * able to grab pid PID_RECYCLE skip the test. + */ + if (pid2 != PID_RECYCLE) { + /* skip test */ + close(pidfd); + _exit(PIDFD_SKIP); + } + + if (pidfd < 0) + _exit(PIDFD_ERROR); + + for (i = 0; i <= PIDFD_MAX_DEFAULT; i++) { + char c; + int pipe_fds[2]; + pid_t recycled_pid; + int child_ret = PIDFD_PASS; + + ret = pipe2(pipe_fds, O_CLOEXEC); + if (ret < 0) + _exit(PIDFD_ERROR); + + recycled_pid = fork(); + if (recycled_pid < 0) + _exit(PIDFD_ERROR); + + if (recycled_pid == 0) { + close(pipe_fds[1]); + (void)read(pipe_fds[0], &c, 1); + close(pipe_fds[0]); + + _exit(PIDFD_PASS); + } + + /* + * Stop the child so we can inspect whether we have + * recycled pid PID_RECYCLE. + */ + close(pipe_fds[0]); + ret = kill(recycled_pid, SIGSTOP); + close(pipe_fds[1]); + if (ret) { + (void)wait_for_pid(recycled_pid); + _exit(PIDFD_ERROR); + } + + /* + * We have recycled the pid. Try to signal it. This + * needs to fail since this is a different process than + * the one the pidfd refers to. + */ + if (recycled_pid == PID_RECYCLE) { + ret = sys_pidfd_send_signal(pidfd, SIGCONT, + NULL, 0); + if (ret && errno == ESRCH) + child_ret = PIDFD_XFAIL; + else + child_ret = PIDFD_FAIL; + } + + /* let the process move on */ + ret = kill(recycled_pid, SIGCONT); + if (ret) + (void)kill(recycled_pid, SIGKILL); + + if (wait_for_pid(recycled_pid)) + _exit(PIDFD_ERROR); + + switch (child_ret) { + case PIDFD_FAIL: + /* fallthrough */ + case PIDFD_XFAIL: + _exit(child_ret); + case PIDFD_PASS: + break; + default: + /* not reached */ + _exit(PIDFD_ERROR); + } + + /* + * If the user set a custom pid_max limit we could be + * in the millions. + * Skip the test in this case. + */ + if (recycled_pid > PIDFD_MAX_DEFAULT) + _exit(PIDFD_SKIP); + } + + /* failed to recycle pid */ + _exit(PIDFD_SKIP); + } + + ret = wait_for_pid(pid1); + switch (ret) { + case PIDFD_FAIL: + ksft_exit_fail_msg( + "%s test: Managed to signal recycled pid %d\n", + test_name, PID_RECYCLE); + case PIDFD_PASS: + ksft_exit_fail_msg("%s test: Failed to recycle pid %d\n", + test_name, PID_RECYCLE); + case PIDFD_SKIP: + ksft_print_msg("%s test: Skipping test\n", test_name); + ret = 0; + break; + case PIDFD_XFAIL: + ksft_test_result_pass( + "%s test: Failed to signal recycled pid as expected\n", + test_name); + ret = 0; + break; + default /* PIDFD_ERROR */: + ksft_exit_fail_msg("%s test: Error while running tests\n", + test_name); + } + + return ret; +} + +static int test_pidfd_send_signal_syscall_support(void) +{ + int pidfd, ret; + const char *test_name = "pidfd_send_signal check for support"; + + pidfd = open("/proc/self", O_DIRECTORY | O_CLOEXEC); + if (pidfd < 0) + ksft_exit_fail_msg( + "%s test: Failed to open process file descriptor\n", + test_name); + + ret = sys_pidfd_send_signal(pidfd, 0, NULL, 0); + if (ret < 0) { + /* + * pidfd_send_signal() will currently return ENOSYS when + * CONFIG_PROC_FS is not set. + */ + if (errno == ENOSYS) + ksft_exit_skip( + "%s test: pidfd_send_signal() syscall not supported (Ensure that CONFIG_PROC_FS=y is set)\n", + test_name); + + ksft_exit_fail_msg("%s test: Failed to send signal\n", + test_name); + } + + close(pidfd); + ksft_test_result_pass( + "%s test: pidfd_send_signal() syscall is supported. Tests can be executed\n", + test_name); + return 0; +} + +int main(int argc, char **argv) +{ + ksft_print_header(); + + test_pidfd_send_signal_syscall_support(); + test_pidfd_send_signal_simple_success(); + test_pidfd_send_signal_exited_fail(); + test_pidfd_send_signal_recycled_pid_fail(); + + return ksft_exit_pass(); +} diff --git a/tools/testing/selftests/proc/proc-pid-vm.c b/tools/testing/selftests/proc/proc-pid-vm.c index bbe8150d18aa..7202bbac976e 100644 --- a/tools/testing/selftests/proc/proc-pid-vm.c +++ b/tools/testing/selftests/proc/proc-pid-vm.c @@ -29,6 +29,7 @@ #include <errno.h> #include <sched.h> #include <signal.h> +#include <stdbool.h> #include <stdint.h> #include <stdio.h> #include <string.h> @@ -36,11 +37,14 @@ #include <sys/mount.h> #include <sys/types.h> #include <sys/stat.h> +#include <sys/wait.h> #include <fcntl.h> #include <unistd.h> #include <sys/syscall.h> #include <sys/uio.h> #include <linux/kdev_t.h> +#include <sys/time.h> +#include <sys/resource.h> static inline long sys_execveat(int dirfd, const char *pathname, char **argv, char **envp, int flags) { @@ -205,12 +209,44 @@ static int make_exe(const uint8_t *payload, size_t len) } #endif +static bool g_vsyscall = false; + +static const char str_vsyscall[] = +"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n"; + #ifdef __x86_64__ +/* + * vsyscall page can't be unmapped, probe it with memory load. + */ +static void vsyscall(void) +{ + pid_t pid; + int wstatus; + + pid = fork(); + if (pid < 0) { + fprintf(stderr, "fork, errno %d\n", errno); + exit(1); + } + if (pid == 0) { + struct rlimit rlim = {0, 0}; + (void)setrlimit(RLIMIT_CORE, &rlim); + *(volatile int *)0xffffffffff600000UL; + exit(0); + } + wait(&wstatus); + if (WIFEXITED(wstatus)) { + g_vsyscall = true; + } +} + int main(void) { int pipefd[2]; int exec_fd; + vsyscall(); + atexit(ate); make_private_tmp(); @@ -261,9 +297,9 @@ int main(void) snprintf(buf0 + MAPS_OFFSET, sizeof(buf0) - MAPS_OFFSET, "/tmp/#%llu (deleted)\n", (unsigned long long)st.st_ino); - /* Test /proc/$PID/maps */ { + const size_t len = strlen(buf0) + (g_vsyscall ? strlen(str_vsyscall) : 0); char buf[256]; ssize_t rv; int fd; @@ -274,13 +310,16 @@ int main(void) return 1; } rv = read(fd, buf, sizeof(buf)); - assert(rv == strlen(buf0)); + assert(rv == len); assert(memcmp(buf, buf0, strlen(buf0)) == 0); + if (g_vsyscall) { + assert(memcmp(buf + strlen(buf0), str_vsyscall, strlen(str_vsyscall)) == 0); + } } /* Test /proc/$PID/smaps */ { - char buf[1024]; + char buf[4096]; ssize_t rv; int fd; @@ -319,6 +358,10 @@ int main(void) for (i = 0; i < sizeof(S)/sizeof(S[0]); i++) { assert(memmem(buf, rv, S[i], strlen(S[i]))); } + + if (g_vsyscall) { + assert(memmem(buf, rv, str_vsyscall, strlen(str_vsyscall))); + } } /* Test /proc/$PID/smaps_rollup */ |