systemctl: support remote and privileged systemctl access via SSH and pkexec

[elogind.git] / src / util.c

diff --git a/src/util.c b/src/util.c
index e2859fafc1b115215eb7638125a126e031aa1bf5..c9366c4a393fe9239fd038e00f19f074eb020d20 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -683,6 +683,73 @@ fail:
         return r;
 }
 
+int load_env_file(
+                const char *fname,
+                char ***rl) {
+
+        FILE *f;
+        char **m = 0;
+        int r;
+
+        assert(fname);
+        assert(rl);
+
+        if (!(f = fopen(fname, "re")))
+                return -errno;
+
+        while (!feof(f)) {
+                char l[LINE_MAX], *p, *u;
+                char **t;
+
+                if (!fgets(l, sizeof(l), f)) {
+                        if (feof(f))
+                                break;
+
+                        r = -errno;
+                        goto finish;
+                }
+
+                p = strstrip(l);
+
+                if (!*p)
+                        continue;
+
+                if (strchr(COMMENTS, *p))
+                        continue;
+
+                if (!(u = normalize_env_assignment(p))) {
+                        log_error("Out of memory");
+                        r = -ENOMEM;
+                        goto finish;
+                }
+
+                t = strv_append(m, u);
+                free(u);
+
+                if (!t) {
+                        log_error("Out of memory");
+                        r = -ENOMEM;
+                        goto finish;
+                }
+
+                strv_free(m);
+                m = t;
+        }
+
+        r = 0;
+
+        *rl = m;
+        m = NULL;
+
+finish:
+        if (f)
+                fclose(f);
+
+        strv_free(m);
+
+        return r;
+}
+
 char *truncate_nl(char *s) {
         assert(s);
 
@@ -1748,8 +1815,9 @@ int close_all_fds(const int except[], unsigned n_except) {
                 if (ignore_file(de->d_name))
                         continue;
 
-                if ((r = safe_atoi(de->d_name, &fd)) < 0)
-                        goto finish;
+                if (safe_atoi(de->d_name, &fd) < 0)
+                        /* Let's better ignore this, just in case */
+                        continue;
 
                 if (fd < 3)
                         continue;
@@ -1772,16 +1840,13 @@ int close_all_fds(const int except[], unsigned n_except) {
                                 continue;
                 }
 
-                if ((r = close_nointr(fd)) < 0) {
+                if (close_nointr(fd) < 0) {
                         /* Valgrind has its own FD and doesn't want to have it closed */
-                        if (errno != EBADF)
-                                goto finish;
+                        if (errno != EBADF && r == 0)
+                                r = -errno;
                 }
         }
 
-        r = 0;
-
-finish:
         closedir(d);
         return r;
 }
@@ -3185,6 +3250,32 @@ void status_welcome(void) {
         if (!ansi_color)
                 const_color = "0;33"; /* Orange/Brown for Ubuntu */
 
+#elif defined(TARGET_MANDRIVA)
+
+        if (!pretty_name) {
+                char *s, *p;
+
+                if ((r = read_one_line_file("/etc/mandriva-release", &s) < 0)) {
+                        if (r != -ENOENT)
+                                log_warning("Failed to read /etc/mandriva-release: %s", strerror(-r));
+                } else {
+                        p = strstr(s, " release ");
+                        if (p) {
+                                *p = '\0';
+                                p += 9;
+                                p[strcspn(p, " ")] = '\0';
+
+                                /* This corresponds to standard rc.sysinit */
+                                if (asprintf(&pretty_name, "%s\x1B[0;39m %s", s, p) > 0)
+                                        const_color = "1;36";
+                                else
+                                        log_warning("Failed to allocate Mandriva version string.");
+                        } else
+                                log_warning("Failed to parse /etc/mandriva-release");
+                        free(s);
+                }
+        }
+
 #endif
 
         if (!pretty_name && !const_pretty)
@@ -3526,6 +3617,10 @@ int wait_for_terminate_and_warn(const char *name, pid_t pid) {
 }
 
 void freeze(void) {
+
+        /* Make sure nobody waits for us on a socket anymore */
+        close_all_fds(NULL, 0);
+
         sync();
 
         for (;;)
@@ -3727,8 +3822,7 @@ int detect_vm(const char **id) {
                 "Microsoft Corporation\0" "microsoft\0"
                 "innotek GmbH\0"          "oracle\0"
                 "Xen\0"                   "xen\0"
-                "Bochs\0"                 "bochs\0"
-                "\0";
+                "Bochs\0"                 "bochs\0";
 
         static const char cpuid_vendor_table[] =
                 "XenVMMXenVMM\0"          "xen\0"
@@ -3736,8 +3830,7 @@ int detect_vm(const char **id) {
                 /* 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"
-                "\0";
+                "Microsoft Hv\0"          "microsoft\0";
 
         uint32_t eax, ecx;
         union {
@@ -3977,6 +4070,30 @@ finish:
                 hashmap_free_free(pids);
 }
 
+int kill_and_sigcont(pid_t pid, int sig) {
+        int r;
+
+        r = kill(pid, sig) < 0 ? -errno : 0;
+
+        if (r >= 0)
+                kill(pid, SIGCONT);
+
+        return r;
+}
+
+bool nulstr_contains(const char*nulstr, const char *needle) {
+        const char *i;
+
+        if (!nulstr)
+                return false;
+
+        NULSTR_FOREACH(i, nulstr)
+                if (streq(i, needle))
+                        return true;
+
+        return false;
+}
+
 static const char *const ioprio_class_table[] = {
         [IOPRIO_CLASS_NONE] = "none",
         [IOPRIO_CLASS_RT] = "realtime",