X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=os-posix.c;h=52ef6990ff9d4c4e2cd52b6f6a820cdbb8efb9fb;hb=1a1e889f3576f60f29ccb71a70f53907ad95a6a7;hp=90ea71725fb026e8dec8384267441ec427734fa3;hpb=80bd81cadd127c1e2fc784612a52abe392670ba4;p=qmiga%2Fqemu.git

diff --git a/os-posix.c b/os-posix.c
index 90ea71725f..52ef6990ff 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -29,32 +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"
 
 #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)
 {
@@ -102,7 +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. user_id 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 *user_id)
 {
     unsigned long lv;
     const char *ep;
@@ -110,7 +108,14 @@ static bool os_parse_runas_uid_gid(const char *optarg)
     gid_t got_gid;
     int rc;
 
-    rc = qemu_strtoul(optarg, &ep, 0, &lv);
+    user_pwd = getpwnam(user_id);
+    if (user_pwd) {
+        user_uid = -1;
+        user_gid = -1;
+        return true;
+    }
+
+    rc = qemu_strtoul(user_id, &ep, 0, &lv);
     got_uid = lv; /* overflow here is ID in C99 */
     if (rc || *ep != ':' || got_uid != lv || got_uid == (uid_t)-1) {
         return false;
@@ -128,55 +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:
-        chroot_dir = optarg;
-        break;
-    case QEMU_OPTION_daemonize:
-        daemonize = 1;
-        break;
-#if defined(CONFIG_LINUX)
-    /* deprecated */
-    case QEMU_OPTION_asyncteardown:
-        init_async_teardown();
-        break;
-    case QEMU_OPTION_run_with: {
-        QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("run-with"),
-                                                 optarg, false);
-        if (!opts) {
-            exit(1);
-        }
-        if (qemu_opt_get_bool(opts, "async-teardown", false)) {
-            init_async_teardown();
-        }
-        break;
-    }
-#endif
-    default:
-        return -1;
-    }
-
-    return 0;
-}
-
 static void change_process_uid(void)
 {
     assert((user_uid == (uid_t)-1) || user_pwd == NULL);
@@ -214,6 +170,14 @@ static void change_process_uid(void)
     }
 }
 
+
+static const char *chroot_dir;
+
+void os_set_chroot(const char *path)
+{
+    chroot_dir = path;
+}
+
 static void change_root(void)
 {
     if (chroot_dir) {
@@ -229,6 +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) {
@@ -322,17 +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