Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* only build util/async-teardown.c when system build is requested
* target/i386: fix BQL handling of the legacy FERR interrupts
* target/i386: fix memory operand size for CVTPS2PD
* target/i386: Add support for AMX-COMPLEX in CPUID enumeration
* compile plugins on Darwin
* configure and meson cleanups
* drop mkvenv support for Python 3.7 and Debian10
* add wrap file for libblkio
* tweak KVM stubs

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# gpg: Signature made Thu 07 Sep 2023 07:44:37 EDT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (51 commits)
  docs/system/replay: do not show removed command line option
  subprojects: add wrap file for libblkio
  sysemu/kvm: Restrict kvm_pc_setup_irq_routing() to x86 targets
  sysemu/kvm: Restrict kvm_has_pit_state2() to x86 targets
  sysemu/kvm: Restrict kvm_get_apic_state() to x86 targets
  sysemu/kvm: Restrict kvm_arch_get_supported_cpuid/msr() to x86 targets
  target/i386: Restrict declarations specific to CONFIG_KVM
  target/i386: Allow elision of kvm_hv_vpindex_settable()
  target/i386: Allow elision of kvm_enable_x2apic()
  target/i386: Remove unused KVM stubs
  target/i386/cpu-sysemu: Inline kvm_apic_in_kernel()
  target/i386/helper: Restrict KVM declarations to system emulation
  hw/i386/fw_cfg: Include missing 'cpu.h' header
  hw/i386/pc: Include missing 'cpu.h' header
  hw/i386/pc: Include missing 'sysemu/tcg.h' header
  Revert "mkvenv: work around broken pip installations on Debian 10"
  mkvenv: assume presence of importlib.metadata
  Python: Drop support for Python 3.7
  configure: remove dead code
  meson: list leftover CONFIG_* symbols
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 46 insertions, 111 deletions

diff --git a/os-posix.c b/os-posix.c
index cfcb96533c..f90dfda9b0 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -29,33 +29,15 @@
 #include <grp.h>
 #include <libgen.h>
 
-/* Needed early for CONFIG_BSD etc. */
-#include "net/slirp.h"
-#include "qemu/qemu-options.h"
 #include "qemu/error-report.h"
 #include "qemu/log.h"
 #include "sysemu/runstate.h"
 #include "qemu/cutils.h"
-#include "qemu/config-file.h"
-#include "qemu/option.h"
-#include "qemu/module.h"
 
 #ifdef CONFIG_LINUX
 #include <sys/prctl.h>
-#include "qemu/async-teardown.h"
 #endif
 
-/*
- * Must set all three of these at once.
- * Legal combinations are              unset   by name   by uid
- */
-static struct passwd *user_pwd;    /*   NULL   non-NULL   NULL   */
-static uid_t user_uid = (uid_t)-1; /*   -1      -1        >=0    */
-static gid_t user_gid = (gid_t)-1; /*   -1      -1        >=0    */
-
-static const char *chroot_dir;
-static int daemonize;
-static int daemon_pipe;
 
 void os_setup_early_signal_handling(void)
 {
@@ -103,7 +85,22 @@ void os_set_proc_name(const char *s)
 }
 
 
-static bool os_parse_runas_uid_gid(const char *optarg)
+/*
+ * Must set all three of these at once.
+ * Legal combinations are              unset   by name   by uid
+ */
+static struct passwd *user_pwd;    /*   NULL   non-NULL   NULL   */
+static uid_t user_uid = (uid_t)-1; /*   -1      -1        >=0    */
+static gid_t user_gid = (gid_t)-1; /*   -1      -1        >=0    */
+
+/*
+ * Prepare to change user ID. optarg can be one of 3 forms:
+ *   - a username, in which case user ID will be changed to its uid,
+ *     with primary and supplementary groups set up too;
+ *   - a numeric uid, in which case only the uid will be set;
+ *   - a pair of numeric uid:gid.
+ */
+bool os_set_runas(const char *optarg)
 {
     unsigned long lv;
     const char *ep;
@@ -111,6 +108,13 @@ static bool os_parse_runas_uid_gid(const char *optarg)
     gid_t got_gid;
     int rc;
 
+    user_pwd = getpwnam(optarg);
+    if (user_pwd) {
+        user_uid = -1;
+        user_gid = -1;
+        return true;
+    }
+
     rc = qemu_strtoul(optarg, &ep, 0, &lv);
     got_uid = lv; /* overflow here is ID in C99 */
     if (rc || *ep != ':' || got_uid != lv || got_uid == (uid_t)-1) {
@@ -129,63 +133,6 @@ static bool os_parse_runas_uid_gid(const char *optarg)
     return true;
 }
 
-/*
- * Parse OS specific command line options.
- * return 0 if option handled, -1 otherwise
- */
-int os_parse_cmd_args(int index, const char *optarg)
-{
-    switch (index) {
-    case QEMU_OPTION_runas:
-        user_pwd = getpwnam(optarg);
-        if (user_pwd) {
-            user_uid = -1;
-            user_gid = -1;
-        } else if (!os_parse_runas_uid_gid(optarg)) {
-            error_report("User \"%s\" doesn't exist"
-                         " (and is not <uid>:<gid>)",
-                         optarg);
-            exit(1);
-        }
-        break;
-    case QEMU_OPTION_chroot:
-        warn_report("option is deprecated, use '-run-with chroot=...' instead");
-        chroot_dir = optarg;
-        break;
-    case QEMU_OPTION_daemonize:
-        daemonize = 1;
-        break;
-#if defined(CONFIG_LINUX)
-    /* deprecated */
-    case QEMU_OPTION_asyncteardown:
-        init_async_teardown();
-        break;
-#endif
-    case QEMU_OPTION_run_with: {
-        const char *str;
-        QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("run-with"),
-                                                 optarg, false);
-        if (!opts) {
-            exit(1);
-        }
-#if defined(CONFIG_LINUX)
-        if (qemu_opt_get_bool(opts, "async-teardown", false)) {
-            init_async_teardown();
-        }
-#endif
-        str = qemu_opt_get(opts, "chroot");
-        if (str) {
-            chroot_dir = str;
-        }
-        break;
-    }
-    default:
-        return -1;
-    }
-
-    return 0;
-}
-
 static void change_process_uid(void)
 {
     assert((user_uid == (uid_t)-1) || user_pwd == NULL);
@@ -223,6 +170,14 @@ static void change_process_uid(void)
     }
 }
 
+
+static const char *chroot_dir;
+
+void os_set_chroot(const char *optarg)
+{
+    chroot_dir = optarg;
+}
+
 static void change_root(void)
 {
     if (chroot_dir) {
@@ -238,6 +193,21 @@ static void change_root(void)
 
 }
 
+
+static int daemonize;
+static int daemon_pipe;
+
+bool is_daemonized(void)
+{
+    return daemonize;
+}
+
+int os_set_daemonize(bool d)
+{
+    daemonize = d;
+    return 0;
+}
+
 void os_daemonize(void)
 {
     if (daemonize) {
@@ -331,17 +301,6 @@ void os_set_line_buffering(void)
     setvbuf(stdout, NULL, _IOLBF, 0);
 }
 
-bool is_daemonized(void)
-{
-    return daemonize;
-}
-
-int os_set_daemonize(bool d)
-{
-    daemonize = d;
-    return 0;
-}
-
 int os_mlock(void)
 {
 #ifdef HAVE_MLOCKALL
@@ -357,27 +316,3 @@ int os_mlock(void)
     return -ENOSYS;
 #endif
 }
-
-static QemuOptsList qemu_run_with_opts = {
-    .name = "run-with",
-    .head = QTAILQ_HEAD_INITIALIZER(qemu_run_with_opts.head),
-    .desc = {
-#if defined(CONFIG_LINUX)
-        {
-            .name = "async-teardown",
-            .type = QEMU_OPT_BOOL,
-        },
-#endif
-        {
-            .name = "chroot",
-            .type = QEMU_OPT_STRING,
-        },
-        { /* end of list */ }
-    },
-};
-
-static void register_runwith(void)
-{
-    qemu_add_opts(&qemu_run_with_opts);
-}
-opts_init(register_runwith);