build-sys: split internal basic/ library from shared/

basic/      can be used by everything
            cannot use anything outside of basic/

libsystemd/ can use basic/
            cannot use shared/

shared/     can use libsystemd/

1 files changed, 0 insertions, 406 deletions

diff --git a/src/shared/virt.c b/src/shared/virt.c
deleted file mode 100644
index 1299a75ed5..0000000000
--- a/src/shared/virt.c
+++ /dev/null
@@ -1,406 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2011 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include "util.h"
-#include "process-util.h"
-#include "virt.h"
-#include "fileio.h"
-
-static int detect_vm_cpuid(const char **_id) {
-
-        /* Both CPUID and DMI are x86 specific interfaces... */
-#if defined(__i386__) || defined(__x86_64__)
-
-        static const char cpuid_vendor_table[] =
-                "XenVMMXenVMM\0"          "xen\0"
-                "KVMKVMKVM\0"             "kvm\0"
-                /* http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458 */
-                "VMwareVMware\0"          "vmware\0"
-                /* http://msdn.microsoft.com/en-us/library/ff542428.aspx */
-                "Microsoft Hv\0"          "microsoft\0";
-
-        uint32_t eax, ecx;
-        union {
-                uint32_t sig32[3];
-                char text[13];
-        } sig = {};
-        const char *j, *k;
-        bool hypervisor;
-
-        /* http://lwn.net/Articles/301888/ */
-
-#if defined (__i386__)
-#define REG_a "eax"
-#define REG_b "ebx"
-#elif defined (__amd64__)
-#define REG_a "rax"
-#define REG_b "rbx"
-#endif
-
-        /* First detect whether there is a hypervisor */
-        eax = 1;
-        __asm__ __volatile__ (
-                /* ebx/rbx is being used for PIC! */
-                "  push %%"REG_b"         \n\t"
-                "  cpuid                  \n\t"
-                "  pop %%"REG_b"          \n\t"
-
-                : "=a" (eax), "=c" (ecx)
-                : "0" (eax)
-        );
-
-        hypervisor = !!(ecx & 0x80000000U);
-
-        if (hypervisor) {
-
-                /* There is a hypervisor, see what it is */
-                eax = 0x40000000U;
-                __asm__ __volatile__ (
-                        /* ebx/rbx is being used for PIC! */
-                        "  push %%"REG_b"         \n\t"
-                        "  cpuid                  \n\t"
-                        "  mov %%ebx, %1          \n\t"
-                        "  pop %%"REG_b"          \n\t"
-
-                        : "=a" (eax), "=r" (sig.sig32[0]), "=c" (sig.sig32[1]), "=d" (sig.sig32[2])
-                        : "0" (eax)
-                );
-
-                NULSTR_FOREACH_PAIR(j, k, cpuid_vendor_table)
-                        if (streq(sig.text, j)) {
-                                *_id = k;
-                                return 1;
-                        }
-
-                *_id = "other";
-                return 0;
-        }
-#endif
-
-        return 0;
-}
-
-static int detect_vm_devicetree(const char **_id) {
-#if defined(__arm__) || defined(__aarch64__) || defined(__powerpc__) || defined(__powerpc64__)
-        _cleanup_free_ char *hvtype = NULL;
-        int r;
-
-        r = read_one_line_file("/proc/device-tree/hypervisor/compatible", &hvtype);
-        if (r >= 0) {
-                if (streq(hvtype, "linux,kvm")) {
-                        *_id = "kvm";
-                        return 1;
-                } else if (strstr(hvtype, "xen")) {
-                        *_id = "xen";
-                        return 1;
-                }
-        } else if (r == -ENOENT) {
-                _cleanup_closedir_ DIR *dir = NULL;
-                struct dirent *dent;
-
-                dir = opendir("/proc/device-tree");
-                if (!dir) {
-                        if (errno == ENOENT)
-                                return 0;
-                        return -errno;
-                }
-
-                FOREACH_DIRENT(dent, dir, return -errno) {
-                        if (strstr(dent->d_name, "fw-cfg")) {
-                                *_id = "qemu";
-                                return 1;
-                        }
-                }
-        }
-#endif
-        return 0;
-}
-
-static int detect_vm_dmi(const char **_id) {
-
-        /* Both CPUID and DMI are x86 specific interfaces... */
-#if defined(__i386__) || defined(__x86_64__)
-
-        static const char *const dmi_vendors[] = {
-                "/sys/class/dmi/id/sys_vendor",
-                "/sys/class/dmi/id/board_vendor",
-                "/sys/class/dmi/id/bios_vendor"
-        };
-
-        static const char dmi_vendor_table[] =
-                "QEMU\0"                  "qemu\0"
-                /* http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458 */
-                "VMware\0"                "vmware\0"
-                "VMW\0"                   "vmware\0"
-                "innotek GmbH\0"          "oracle\0"
-                "Xen\0"                   "xen\0"
-                "Bochs\0"                 "bochs\0";
-        unsigned i;
-
-        for (i = 0; i < ELEMENTSOF(dmi_vendors); i++) {
-                _cleanup_free_ char *s = NULL;
-                const char *j, *k;
-                int r;
-
-                r = read_one_line_file(dmi_vendors[i], &s);
-                if (r < 0) {
-                        if (r != -ENOENT)
-                                return r;
-
-                        continue;
-                }
-
-                NULSTR_FOREACH_PAIR(j, k, dmi_vendor_table)
-                        if (startswith(s, j)) {
-                                *_id = k;
-                                return 1;
-                        }
-        }
-#endif
-
-        return 0;
-}
-
-/* Returns a short identifier for the various VM implementations */
-int detect_vm(const char **id) {
-        _cleanup_free_ char *domcap = NULL, *cpuinfo_contents = NULL;
-        static thread_local int cached_found = -1;
-        static thread_local const char *cached_id = NULL;
-        const char *_id = NULL;
-        int r;
-
-        if (_likely_(cached_found >= 0)) {
-
-                if (id)
-                        *id = cached_id;
-
-                return cached_found;
-        }
-
-        /* Try xen capabilities file first, if not found try high-level hypervisor sysfs file:
-         *
-         * https://bugs.freedesktop.org/show_bug.cgi?id=77271 */
-        r = read_one_line_file("/proc/xen/capabilities", &domcap);
-        if (r >= 0) {
-                char *cap, *i = domcap;
-
-                while ((cap = strsep(&i, ",")))
-                        if (streq(cap, "control_d"))
-                                break;
-
-                if (!cap)  {
-                        _id = "xen";
-                        r = 1;
-                }
-
-                goto finish;
-
-        } else if (r == -ENOENT) {
-                _cleanup_free_ char *hvtype = NULL;
-
-                r = read_one_line_file("/sys/hypervisor/type", &hvtype);
-                if (r >= 0) {
-                        if (streq(hvtype, "xen")) {
-                                _id = "xen";
-                                r = 1;
-                                goto finish;
-                        }
-                } else if (r != -ENOENT)
-                        return r;
-        } else
-                return r;
-
-        /* this will set _id to "other" and return 0 for unknown hypervisors */
-        r = detect_vm_cpuid(&_id);
-        if (r != 0)
-                goto finish;
-
-        r = detect_vm_dmi(&_id);
-        if (r != 0)
-                goto finish;
-
-        r = detect_vm_devicetree(&_id);
-        if (r != 0)
-                goto finish;
-
-        if (_id) {
-                /* "other" */
-                r = 1;
-                goto finish;
-        }
-
-        /* Detect User-Mode Linux by reading /proc/cpuinfo */
-        r = read_full_file("/proc/cpuinfo", &cpuinfo_contents, NULL);
-        if (r < 0)
-                return r;
-        if (strstr(cpuinfo_contents, "\nvendor_id\t: User Mode Linux\n")) {
-                _id = "uml";
-                r = 1;
-                goto finish;
-        }
-
-#if defined(__s390__)
-        {
-                _cleanup_free_ char *t = NULL;
-
-                r = get_status_field("/proc/sysinfo", "VM00 Control Program:", &t);
-                if (r >= 0) {
-                        if (streq(t, "z/VM"))
-                                _id = "zvm";
-                        else
-                                _id = "kvm";
-                        r = 1;
-
-                        goto finish;
-                }
-        }
-#endif
-
-        r = 0;
-
-finish:
-        cached_found = r;
-
-        cached_id = _id;
-        if (id)
-                *id = _id;
-
-        return r;
-}
-
-int detect_container(const char **id) {
-
-        static thread_local int cached_found = -1;
-        static thread_local const char *cached_id = NULL;
-
-        _cleanup_free_ char *m = NULL;
-        const char *_id = NULL, *e = NULL;
-        int r;
-
-        if (_likely_(cached_found >= 0)) {
-
-                if (id)
-                        *id = cached_id;
-
-                return cached_found;
-        }
-
-        /* /proc/vz exists in container and outside of the container,
-         * /proc/bc only outside of the container. */
-        if (access("/proc/vz", F_OK) >= 0 &&
-            access("/proc/bc", F_OK) < 0) {
-                _id = "openvz";
-                r = 1;
-                goto finish;
-        }
-
-        if (getpid() == 1) {
-                /* If we are PID 1 we can just check our own
-                 * environment variable */
-
-                e = getenv("container");
-                if (isempty(e)) {
-                        r = 0;
-                        goto finish;
-                }
-        } else {
-
-                /* Otherwise, PID 1 dropped this information into a
-                 * file in /run. This is better than accessing
-                 * /proc/1/environ, since we don't need CAP_SYS_PTRACE
-                 * for that. */
-
-                r = read_one_line_file("/run/systemd/container", &m);
-                if (r == -ENOENT) {
-
-                        /* Fallback for cases where PID 1 was not
-                         * systemd (for example, cases where
-                         * init=/bin/sh is used. */
-
-                        r = getenv_for_pid(1, "container", &m);
-                        if (r <= 0) {
-
-                                /* If that didn't work, give up,
-                                 * assume no container manager.
-                                 *
-                                 * Note: This means we still cannot
-                                 * detect containers if init=/bin/sh
-                                 * is passed but privileges dropped,
-                                 * as /proc/1/environ is only readable
-                                 * with privileges. */
-
-                                r = 0;
-                                goto finish;
-                        }
-                }
-                if (r < 0)
-                        return r;
-
-                e = m;
-        }
-
-        /* We only recognize a selected few here, since we want to
-         * enforce a redacted namespace */
-        if (streq(e, "lxc"))
-                _id ="lxc";
-        else if (streq(e, "lxc-libvirt"))
-                _id = "lxc-libvirt";
-        else if (streq(e, "systemd-nspawn"))
-                _id = "systemd-nspawn";
-        else if (streq(e, "docker"))
-                _id = "docker";
-        else
-                _id = "other";
-
-        r = 1;
-
-finish:
-        cached_found = r;
-
-        cached_id = _id;
-        if (id)
-                *id = _id;
-
-        return r;
-}
-
-/* Returns a short identifier for the various VM/container implementations */
-int detect_virtualization(const char **id) {
-        int r;
-
-        r = detect_container(id);
-        if (r < 0)
-                return r;
-        if (r > 0)
-                return VIRTUALIZATION_CONTAINER;
-
-        r = detect_vm(id);
-        if (r < 0)
-                return r;
-        if (r > 0)
-                return VIRTUALIZATION_VM;
-
-        return VIRTUALIZATION_NONE;
-}