| 1 | #ifndef _LTTNG_KERNEL_VERSION_H |
| 2 | #define _LTTNG_KERNEL_VERSION_H |
| 3 | |
| 4 | /* |
| 5 | * lttng-kernel-version.h |
| 6 | * |
| 7 | * Contains helpers to check more complex kernel version conditions. |
| 8 | * |
| 9 | * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 10 | * |
| 11 | * This library is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU Lesser General Public |
| 13 | * License as published by the Free Software Foundation; only |
| 14 | * version 2.1 of the License. |
| 15 | * |
| 16 | * This library is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | * Lesser General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU Lesser General Public |
| 22 | * License along with this library; if not, write to the Free Software |
| 23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 24 | */ |
| 25 | |
| 26 | #include <linux/version.h> |
| 27 | |
| 28 | /* |
| 29 | * The following defines are extracted from the toplevel Linux Makefile and |
| 30 | * passed on the command line -with '-D'. |
| 31 | */ |
| 32 | |
| 33 | #ifndef LTTNG_LINUX_MAJOR |
| 34 | #define LTTNG_LINUX_MAJOR 0 |
| 35 | #endif |
| 36 | |
| 37 | #ifndef LTTNG_LINUX_MINOR |
| 38 | #define LTTNG_LINUX_MINOR 0 |
| 39 | #endif |
| 40 | |
| 41 | #ifndef LTTNG_LINUX_PATCH |
| 42 | #define LTTNG_LINUX_PATCH 0 |
| 43 | #endif |
| 44 | |
| 45 | /* |
| 46 | * Some stable releases have overflowed the 8bits allocated to the sublevel in |
| 47 | * the version code. To determine if the current kernel is affected, use the |
| 48 | * sublevel version from the Makefile. This is currently true for the 4.4.256 |
| 49 | * and 4.9.256 stable releases. |
| 50 | * |
| 51 | * When the sublevel has overflowed, use the values from the Makefile instead |
| 52 | * of LINUX_VERSION_CODE from the kernel headers and allocate 16bits. |
| 53 | * Otherwise, keep using the version code from the headers to minimise the |
| 54 | * behavior change and avoid regressions. |
| 55 | * |
| 56 | * Cast the result to uint64_t to prevent overflowing when we append distro |
| 57 | * specific version information. |
| 58 | */ |
| 59 | #if (LTTNG_LINUX_PATCH >= 256) |
| 60 | |
| 61 | #define LTTNG_KERNEL_VERSION(a, b, c) \ |
| 62 | ((((a) << 24) + ((b) << 16) + (c)) * 1ULL) |
| 63 | |
| 64 | #define LTTNG_LINUX_VERSION_CODE \ |
| 65 | LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH) |
| 66 | |
| 67 | #else |
| 68 | |
| 69 | #define LTTNG_KERNEL_VERSION(a, b, c) (KERNEL_VERSION(a, b, c) * 1ULL) |
| 70 | #define LTTNG_LINUX_VERSION_CODE (LINUX_VERSION_CODE * 1ULL) |
| 71 | |
| 72 | #endif |
| 73 | |
| 74 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) |
| 75 | #include <generated/utsrelease.h> |
| 76 | #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */ |
| 77 | #include <linux/utsrelease.h> |
| 78 | #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */ |
| 79 | |
| 80 | /* |
| 81 | * This macro checks if the kernel version is between the two specified |
| 82 | * versions (lower limit inclusive, upper limit exclusive). |
| 83 | */ |
| 84 | #define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \ |
| 85 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \ |
| 86 | LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high)) |
| 87 | |
| 88 | /* Ubuntu */ |
| 89 | |
| 90 | #define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \ |
| 91 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d)) |
| 92 | |
| 93 | #ifdef UTS_UBUNTU_RELEASE_ABI |
| 94 | #define LTTNG_UBUNTU_VERSION_CODE \ |
| 95 | ((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI) |
| 96 | #else |
| 97 | #define LTTNG_UBUNTU_VERSION_CODE 0 |
| 98 | #endif |
| 99 | |
| 100 | #define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ |
| 101 | a_high, b_high, c_high, d_high) \ |
| 102 | (LTTNG_UBUNTU_VERSION_CODE >= \ |
| 103 | LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ |
| 104 | LTTNG_UBUNTU_VERSION_CODE < \ |
| 105 | LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high)) |
| 106 | |
| 107 | /* Debian */ |
| 108 | |
| 109 | #define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \ |
| 110 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
| 111 | |
| 112 | #ifdef DEBIAN_API_VERSION |
| 113 | #define LTTNG_DEBIAN_VERSION_CODE \ |
| 114 | ((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION) |
| 115 | #else |
| 116 | #define LTTNG_DEBIAN_VERSION_CODE 0 |
| 117 | #endif |
| 118 | |
| 119 | #define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ |
| 120 | a_high, b_high, c_high, d_high, e_high, f_high) \ |
| 121 | (LTTNG_DEBIAN_VERSION_CODE >= \ |
| 122 | LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
| 123 | LTTNG_DEBIAN_VERSION_CODE < \ |
| 124 | LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) |
| 125 | |
| 126 | #define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \ |
| 127 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
| 128 | |
| 129 | /* RHEL */ |
| 130 | |
| 131 | #ifdef RHEL_API_VERSION |
| 132 | #define LTTNG_RHEL_VERSION_CODE \ |
| 133 | ((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION) |
| 134 | #else |
| 135 | #define LTTNG_RHEL_VERSION_CODE 0 |
| 136 | #endif |
| 137 | |
| 138 | #define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ |
| 139 | a_high, b_high, c_high, d_high, e_high, f_high) \ |
| 140 | (LTTNG_RHEL_VERSION_CODE >= \ |
| 141 | LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
| 142 | LTTNG_RHEL_VERSION_CODE < \ |
| 143 | LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) |
| 144 | |
| 145 | /* SUSE Linux enterprise */ |
| 146 | |
| 147 | #define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \ |
| 148 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
| 149 | |
| 150 | #ifdef SLE_API_VERSION |
| 151 | #define LTTNG_SLE_VERSION_CODE \ |
| 152 | ((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION) |
| 153 | #else |
| 154 | #define LTTNG_SLE_VERSION_CODE 0 |
| 155 | #endif |
| 156 | |
| 157 | #define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ |
| 158 | a_high, b_high, c_high, d_high, e_high, f_high) \ |
| 159 | (LTTNG_SLE_VERSION_CODE >= \ |
| 160 | LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
| 161 | LTTNG_SLE_VERSION_CODE < \ |
| 162 | LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) |
| 163 | |
| 164 | /* Fedora */ |
| 165 | |
| 166 | #define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \ |
| 167 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d)) |
| 168 | |
| 169 | #ifdef FEDORA_REVISION_VERSION |
| 170 | #define LTTNG_FEDORA_VERSION_CODE \ |
| 171 | ((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION) |
| 172 | #else |
| 173 | #define LTTNG_FEDORA_VERSION_CODE 0 |
| 174 | #endif |
| 175 | |
| 176 | #define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ |
| 177 | a_high, b_high, c_high, d_high) \ |
| 178 | (LTTNG_FEDORA_VERSION_CODE >= \ |
| 179 | LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ |
| 180 | LTTNG_FEDORA_VERSION_CODE < \ |
| 181 | LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high)) |
| 182 | |
| 183 | /* RT patch */ |
| 184 | |
| 185 | #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \ |
| 186 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d)) |
| 187 | |
| 188 | #ifdef RT_PATCH_VERSION |
| 189 | #define LTTNG_RT_VERSION_CODE \ |
| 190 | ((LTTNG_LINUX_VERSION_CODE << 16) + RT_PATCH_VERSION) |
| 191 | #else |
| 192 | #define LTTNG_RT_VERSION_CODE 0 |
| 193 | #endif |
| 194 | |
| 195 | #define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ |
| 196 | a_high, b_high, c_high, d_high) \ |
| 197 | (LTTNG_RT_VERSION_CODE >= \ |
| 198 | LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ |
| 199 | LTTNG_RT_VERSION_CODE < \ |
| 200 | LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high)) |
| 201 | |
| 202 | #endif /* _LTTNG_KERNEL_VERSION_H */ |