1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2023 Oxide Computer Company 14 */ 15 16 #include <stdio.h> 17 #include <unistd.h> 18 #include <stdlib.h> 19 #include <fcntl.h> 20 #include <libgen.h> 21 #include <sys/stat.h> 22 #include <errno.h> 23 #include <err.h> 24 #include <assert.h> 25 #include <sys/sysmacros.h> 26 #include <stdbool.h> 27 28 #include <sys/vmm.h> 29 #include <sys/vmm_dev.h> 30 #include <sys/vmm_data.h> 31 #include <vmmapi.h> 32 33 #include "common.h" 34 35 bool 36 check_paused(struct vmctx *ctx) 37 { 38 struct vdi_field_entry_v1 entry = { 39 .vfe_ident = VAI_VM_IS_PAUSED, 40 }; 41 struct vm_data_xfer xfer = { 42 .vdx_vcpuid = -1, 43 .vdx_class = VDC_VMM_ARCH, 44 .vdx_version = 1, 45 .vdx_len = sizeof (entry), 46 .vdx_data = &entry, 47 .vdx_flags = VDX_FLAG_READ_COPYIN, 48 }; 49 50 const int vmfd = vm_get_device_fd(ctx); 51 if (ioctl(vmfd, VM_DATA_READ, &xfer) != 0) { 52 err(EXIT_FAILURE, "error reading pause state"); 53 } 54 55 return (entry.vfe_value != 0); 56 } 57 58 int 59 main(int argc, char *argv[]) 60 { 61 const char *suite_name = basename(argv[0]); 62 struct vmctx *ctx; 63 struct vcpu *vcpu; 64 65 ctx = create_test_vm(suite_name); 66 if (ctx == NULL) { 67 errx(EXIT_FAILURE, "could not open test VM"); 68 } 69 70 if ((vcpu = vm_vcpu_open(ctx, 0)) == NULL) { 71 err(EXIT_FAILURE, "Could not open vcpu0"); 72 } 73 74 if (vm_activate_cpu(vcpu) != 0) { 75 err(EXIT_FAILURE, "could not activate vcpu0"); 76 } 77 78 const int vmfd = vm_get_device_fd(ctx); 79 int error; 80 81 /* Instance should not be paused after initial creation */ 82 if (check_paused(ctx)) { 83 errx(EXIT_FAILURE, "VM unexpectedly in paused state"); 84 } 85 86 if (ioctl(vmfd, VM_PAUSE, 0) != 0) { 87 err(EXIT_FAILURE, "VM_PAUSE failed"); 88 } 89 90 /* Now we should observe the instance as paused */ 91 if (!check_paused(ctx)) { 92 errx(EXIT_FAILURE, "VM no in expected paused state"); 93 } 94 95 /* Pausing an already-paused instanced should result in EALREADY */ 96 if (ioctl(vmfd, VM_PAUSE, 0) == 0) { 97 errx(EXIT_FAILURE, "VM_PAUSE should have failed"); 98 } 99 error = errno; 100 if (error != EALREADY) { 101 errx(EXIT_FAILURE, "VM_PAUSE unexpected errno: %d != %d", 102 EALREADY, error); 103 } 104 105 /* A VM_RUN attempted now should fail with EBUSY */ 106 struct vm_entry ventry = { .cmd = 0, }; 107 struct vm_exit vexit = { 0 }; 108 if (vm_run(vcpu, &ventry, &vexit) == 0) { 109 errx(EXIT_FAILURE, "VM_RUN should have failed"); 110 } 111 error = errno; 112 if (error != EBUSY) { 113 errx(EXIT_FAILURE, "VM_RUN unexpected errno: %d != %d", 114 EBUSY, error); 115 } 116 117 if (ioctl(vmfd, VM_RESUME, 0) != 0) { 118 err(EXIT_FAILURE, "VM_RESUME failed"); 119 } 120 121 /* Now we should observe the instance as no longer paused */ 122 if (check_paused(ctx)) { 123 errx(EXIT_FAILURE, "VM unexpectedly in paused state"); 124 } 125 126 /* Resuming an already-running instanced should result in EALREADY */ 127 if (ioctl(vmfd, VM_RESUME, 0) == 0) { 128 errx(EXIT_FAILURE, "VM_RESUME should have failed"); 129 } 130 error = errno; 131 if (error != EALREADY) { 132 errx(EXIT_FAILURE, "VM_RESUME unexpected errno: %d != %d", 133 EALREADY, error); 134 } 135 136 vm_vcpu_close(vcpu); 137 vm_destroy(ctx); 138 (void) printf("%s\tPASS\n", suite_name); 139 return (EXIT_SUCCESS); 140 } 141