softmmu: move more files to softmmu/

Keep most softmmu_ss files into the system-emulation-specific
directory.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 331 deletions

diff --git a/qemu-seccomp.c b/qemu-seccomp.c
deleted file mode 100644
index 8325ecb766..0000000000
--- a/qemu-seccomp.c
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- * QEMU seccomp mode 2 support with libseccomp
- *
- * Copyright IBM, Corp. 2012
- *
- * Authors:
- *  Eduardo Otubo    <eotubo@br.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-
-#include "qemu/osdep.h"
-#include "qapi/error.h"
-#include "qemu/config-file.h"
-#include "qemu/option.h"
-#include "qemu/module.h"
-#include <sys/prctl.h>
-#include <seccomp.h>
-#include "sysemu/seccomp.h"
-#include <linux/seccomp.h>
-
-/* For some architectures (notably ARM) cacheflush is not supported until
- * libseccomp 2.2.3, but configure enforces that we are using a more recent
- * version on those hosts, so it is OK for this check to be less strict.
- */
-#if SCMP_VER_MAJOR >= 3
-  #define HAVE_CACHEFLUSH
-#elif SCMP_VER_MAJOR == 2 && SCMP_VER_MINOR >= 2
-  #define HAVE_CACHEFLUSH
-#endif
-
-struct QemuSeccompSyscall {
-    int32_t num;
-    uint8_t set;
-    uint8_t narg;
-    const struct scmp_arg_cmp *arg_cmp;
-};
-
-const struct scmp_arg_cmp sched_setscheduler_arg[] = {
-    /* was SCMP_A1(SCMP_CMP_NE, SCHED_IDLE), but expanded due to GCC 4.x bug */
-    { .arg = 1, .op = SCMP_CMP_NE, .datum_a = SCHED_IDLE }
-};
-
-static const struct QemuSeccompSyscall blacklist[] = {
-    /* default set of syscalls to blacklist */
-    { SCMP_SYS(reboot),                 QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(swapon),                 QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(swapoff),                QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(syslog),                 QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(mount),                  QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(umount),                 QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(kexec_load),             QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(afs_syscall),            QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(break),                  QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(ftime),                  QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(getpmsg),                QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(gtty),                   QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(lock),                   QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(mpx),                    QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(prof),                   QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(profil),                 QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(putpmsg),                QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(security),               QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(stty),                   QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(tuxcall),                QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(ulimit),                 QEMU_SECCOMP_SET_DEFAULT },
-    { SCMP_SYS(vserver),                QEMU_SECCOMP_SET_DEFAULT },
-    /* obsolete */
-    { SCMP_SYS(readdir),                QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(_sysctl),                QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(bdflush),                QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(create_module),          QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(get_kernel_syms),        QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(query_module),           QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(sgetmask),               QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(ssetmask),               QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(sysfs),                  QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(uselib),                 QEMU_SECCOMP_SET_OBSOLETE },
-    { SCMP_SYS(ustat),                  QEMU_SECCOMP_SET_OBSOLETE },
-    /* privileged */
-    { SCMP_SYS(setuid),                 QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setgid),                 QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setpgid),                QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setsid),                 QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setreuid),               QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setregid),               QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setresuid),              QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setresgid),              QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setfsuid),               QEMU_SECCOMP_SET_PRIVILEGED },
-    { SCMP_SYS(setfsgid),               QEMU_SECCOMP_SET_PRIVILEGED },
-    /* spawn */
-    { SCMP_SYS(fork),                   QEMU_SECCOMP_SET_SPAWN },
-    { SCMP_SYS(vfork),                  QEMU_SECCOMP_SET_SPAWN },
-    { SCMP_SYS(execve),                 QEMU_SECCOMP_SET_SPAWN },
-    /* resource control */
-    { SCMP_SYS(getpriority),            QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(setpriority),            QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(sched_setparam),         QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(sched_getparam),         QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(sched_setscheduler),     QEMU_SECCOMP_SET_RESOURCECTL,
-      ARRAY_SIZE(sched_setscheduler_arg), sched_setscheduler_arg },
-    { SCMP_SYS(sched_getscheduler),     QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(sched_setaffinity),      QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(sched_getaffinity),      QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(sched_get_priority_max), QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(sched_get_priority_min), QEMU_SECCOMP_SET_RESOURCECTL },
-};
-
-static inline __attribute__((unused)) int
-qemu_seccomp(unsigned int operation, unsigned int flags, void *args)
-{
-#ifdef __NR_seccomp
-    return syscall(__NR_seccomp, operation, flags, args);
-#else
-    errno = ENOSYS;
-    return -1;
-#endif
-}
-
-static uint32_t qemu_seccomp_get_action(int set)
-{
-    switch (set) {
-    case QEMU_SECCOMP_SET_DEFAULT:
-    case QEMU_SECCOMP_SET_OBSOLETE:
-    case QEMU_SECCOMP_SET_PRIVILEGED:
-    case QEMU_SECCOMP_SET_SPAWN: {
-#if defined(SECCOMP_GET_ACTION_AVAIL) && defined(SCMP_ACT_KILL_PROCESS) && \
-    defined(SECCOMP_RET_KILL_PROCESS)
-        static int kill_process = -1;
-        if (kill_process == -1) {
-            uint32_t action = SECCOMP_RET_KILL_PROCESS;
-
-            if (qemu_seccomp(SECCOMP_GET_ACTION_AVAIL, 0, &action) == 0) {
-                kill_process = 1;
-            } else {
-                kill_process = 0;
-            }
-        }
-        if (kill_process == 1) {
-            return SCMP_ACT_KILL_PROCESS;
-        }
-#endif
-        return SCMP_ACT_TRAP;
-    }
-
-    case QEMU_SECCOMP_SET_RESOURCECTL:
-        return SCMP_ACT_ERRNO(EPERM);
-
-    default:
-        g_assert_not_reached();
-    }
-}
-
-
-static int seccomp_start(uint32_t seccomp_opts, Error **errp)
-{
-    int rc = -1;
-    unsigned int i = 0;
-    scmp_filter_ctx ctx;
-
-    ctx = seccomp_init(SCMP_ACT_ALLOW);
-    if (ctx == NULL) {
-        error_setg(errp, "failed to initialize seccomp context");
-        goto seccomp_return;
-    }
-
-    rc = seccomp_attr_set(ctx, SCMP_FLTATR_CTL_TSYNC, 1);
-    if (rc != 0) {
-        error_setg_errno(errp, -rc,
-                         "failed to set seccomp thread synchronization");
-        goto seccomp_return;
-    }
-
-    for (i = 0; i < ARRAY_SIZE(blacklist); i++) {
-        uint32_t action;
-        if (!(seccomp_opts & blacklist[i].set)) {
-            continue;
-        }
-
-        action = qemu_seccomp_get_action(blacklist[i].set);
-        rc = seccomp_rule_add_array(ctx, action, blacklist[i].num,
-                                    blacklist[i].narg, blacklist[i].arg_cmp);
-        if (rc < 0) {
-            error_setg_errno(errp, -rc,
-                             "failed to add seccomp blacklist rules");
-            goto seccomp_return;
-        }
-    }
-
-    rc = seccomp_load(ctx);
-    if (rc < 0) {
-        error_setg_errno(errp, -rc,
-                         "failed to load seccomp syscall filter in kernel");
-    }
-
-  seccomp_return:
-    seccomp_release(ctx);
-    return rc < 0 ? -1 : 0;
-}
-
-#ifdef CONFIG_SECCOMP
-int parse_sandbox(void *opaque, QemuOpts *opts, Error **errp)
-{
-    if (qemu_opt_get_bool(opts, "enable", false)) {
-        uint32_t seccomp_opts = QEMU_SECCOMP_SET_DEFAULT
-                | QEMU_SECCOMP_SET_OBSOLETE;
-        const char *value = NULL;
-
-        value = qemu_opt_get(opts, "obsolete");
-        if (value) {
-            if (g_str_equal(value, "allow")) {
-                seccomp_opts &= ~QEMU_SECCOMP_SET_OBSOLETE;
-            } else if (g_str_equal(value, "deny")) {
-                /* this is the default option, this if is here
-                 * to provide a little bit of consistency for
-                 * the command line */
-            } else {
-                error_setg(errp, "invalid argument for obsolete");
-                return -1;
-            }
-        }
-
-        value = qemu_opt_get(opts, "elevateprivileges");
-        if (value) {
-            if (g_str_equal(value, "deny")) {
-                seccomp_opts |= QEMU_SECCOMP_SET_PRIVILEGED;
-            } else if (g_str_equal(value, "children")) {
-                seccomp_opts |= QEMU_SECCOMP_SET_PRIVILEGED;
-
-                /* calling prctl directly because we're
-                 * not sure if host has CAP_SYS_ADMIN set*/
-                if (prctl(PR_SET_NO_NEW_PRIVS, 1)) {
-                    error_setg(errp, "failed to set no_new_privs aborting");
-                    return -1;
-                }
-            } else if (g_str_equal(value, "allow")) {
-                /* default value */
-            } else {
-                error_setg(errp, "invalid argument for elevateprivileges");
-                return -1;
-            }
-        }
-
-        value = qemu_opt_get(opts, "spawn");
-        if (value) {
-            if (g_str_equal(value, "deny")) {
-                seccomp_opts |= QEMU_SECCOMP_SET_SPAWN;
-            } else if (g_str_equal(value, "allow")) {
-                /* default value */
-            } else {
-                error_setg(errp, "invalid argument for spawn");
-                return -1;
-            }
-        }
-
-        value = qemu_opt_get(opts, "resourcecontrol");
-        if (value) {
-            if (g_str_equal(value, "deny")) {
-                seccomp_opts |= QEMU_SECCOMP_SET_RESOURCECTL;
-            } else if (g_str_equal(value, "allow")) {
-                /* default value */
-            } else {
-                error_setg(errp, "invalid argument for resourcecontrol");
-                return -1;
-            }
-        }
-
-        if (seccomp_start(seccomp_opts, errp) < 0) {
-            return -1;
-        }
-    }
-
-    return 0;
-}
-
-static QemuOptsList qemu_sandbox_opts = {
-    .name = "sandbox",
-    .implied_opt_name = "enable",
-    .head = QTAILQ_HEAD_INITIALIZER(qemu_sandbox_opts.head),
-    .desc = {
-        {
-            .name = "enable",
-            .type = QEMU_OPT_BOOL,
-        },
-        {
-            .name = "obsolete",
-            .type = QEMU_OPT_STRING,
-        },
-        {
-            .name = "elevateprivileges",
-            .type = QEMU_OPT_STRING,
-        },
-        {
-            .name = "spawn",
-            .type = QEMU_OPT_STRING,
-        },
-        {
-            .name = "resourcecontrol",
-            .type = QEMU_OPT_STRING,
-        },
-        { /* end of list */ }
-    },
-};
-
-static void seccomp_register(void)
-{
-    bool add = false;
-
-    /* FIXME: use seccomp_api_get() >= 2 check when released */
-
-#if defined(SECCOMP_FILTER_FLAG_TSYNC)
-    int check;
-
-    /* check host TSYNC capability, it returns errno == ENOSYS if unavailable */
-    check = qemu_seccomp(SECCOMP_SET_MODE_FILTER,
-                         SECCOMP_FILTER_FLAG_TSYNC, NULL);
-    if (check < 0 && errno == EFAULT) {
-        add = true;
-    }
-#endif
-
-    if (add) {
-        qemu_add_opts(&qemu_sandbox_opts);
-    }
-}
-opts_init(seccomp_register);
-#endif