X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Fcondition.c;h=6c387450afdd5d2aea3d7798a55e17e0de3e5db7;hb=52990c2e0eabd1c11280f553f858062d4165b92f;hp=2b51a16f17548e48500a460e533e4dee1de1b1b9;hpb=b30e2f4c18ad81b04e4314fd191a5d458553773c;p=elogind.git

diff --git a/src/core/condition.c b/src/core/condition.c
index 2b51a16f1..6c387450a 100644
--- a/src/core/condition.c
+++ b/src/core/condition.c
@@ -6,16 +6,16 @@
   Copyright 2010 Lennart Poettering
 
   systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
+  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
-  General Public License for more details.
+  Lesser General Public License for more details.
 
-  You should have received a copy of the GNU General Public License
+  You should have received a copy of the GNU Lesser General Public License
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
@@ -24,14 +24,20 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/capability.h>
+#include <sys/statvfs.h>
+#include <fnmatch.h>
 
 #ifdef HAVE_SELINUX
 #include <selinux/selinux.h>
 #endif
 
+#include <systemd/sd-id128.h>
 #include "util.h"
 #include "condition.h"
 #include "virt.h"
+#include "path-util.h"
+#include "fileio.h"
+#include "unit.h"
 
 Condition* condition_new(ConditionType type, const char *parameter, bool trigger, bool negate) {
         Condition *c;
@@ -152,11 +158,28 @@ static bool test_virtualization(const char *parameter) {
         return v > 0 && streq(parameter, id);
 }
 
+static bool test_apparmor_enabled(void) {
+        int r;
+        _cleanup_free_ char *p = NULL;
+
+        r = read_one_line_file("/sys/module/apparmor/parameters/enabled", &p);
+        if (r < 0)
+                return false;
+
+        return parse_boolean(p) > 0;
+}
+
 static bool test_security(const char *parameter) {
 #ifdef HAVE_SELINUX
         if (streq(parameter, "selinux"))
                 return is_selinux_enabled() > 0;
 #endif
+        if (streq(parameter, "apparmor"))
+                return test_apparmor_enabled();
+        if (streq(parameter, "ima"))
+                return access("/sys/kernel/security/ima/", F_OK) == 0;
+        if (streq(parameter, "smack"))
+                return access("/sys/fs/smackfs", F_OK) == 0;
         return false;
 }
 
@@ -192,7 +215,42 @@ static bool test_capability(const char *parameter) {
         return !!(capabilities & (1ULL << value));
 }
 
-bool condition_test(Condition *c) {
+static bool test_host(const char *parameter) {
+        sd_id128_t x, y;
+        char *h;
+        int r;
+        bool b;
+
+        if (sd_id128_from_string(parameter, &x) >= 0) {
+
+                r = sd_id128_get_machine(&y);
+                if (r < 0)
+                        return false;
+
+                return sd_id128_equal(x, y);
+        }
+
+        h = gethostname_malloc();
+        if (!h)
+                return false;
+
+        b = fnmatch(parameter, h, FNM_CASEFOLD) == 0;
+        free(h);
+
+        return b;
+}
+
+static bool test_ac_power(const char *parameter) {
+        int r;
+
+        r = parse_boolean(parameter);
+        if (r < 0)
+                return true;
+
+        return (on_ac_power() != 0) == !!r;
+}
+
+static bool condition_test(Condition *c) {
         assert(c);
 
         switch(c->type) {
@@ -222,6 +280,9 @@ bool condition_test(Condition *c) {
         case CONDITION_PATH_IS_MOUNT_POINT:
                 return (path_is_mount_point(c->parameter, true) > 0) == !c->negate;
 
+        case CONDITION_PATH_IS_READ_WRITE:
+                return (path_is_read_only_fs(c->parameter) > 0) == c->negate;
+
         case CONDITION_DIRECTORY_NOT_EMPTY: {
                 int k;
 
@@ -229,6 +290,15 @@ bool condition_test(Condition *c) {
                 return !(k == -ENOENT || k > 0) == !c->negate;
         }
 
+        case CONDITION_FILE_NOT_EMPTY: {
+                struct stat st;
+
+                if (stat(c->parameter, &st) < 0)
+                        return c->negate;
+
+                return (S_ISREG(st.st_mode) && st.st_size > 0) == !c->negate;
+        }
+
         case CONDITION_FILE_IS_EXECUTABLE: {
                 struct stat st;
 
@@ -250,6 +320,12 @@ bool condition_test(Condition *c) {
         case CONDITION_CAPABILITY:
                 return test_capability(c->parameter) == !c->negate;
 
+        case CONDITION_HOST:
+                return test_host(c->parameter) == !c->negate;
+
+        case CONDITION_AC_POWER:
+                return test_ac_power(c->parameter) == !c->negate;
+
         case CONDITION_NULL:
                 return !c->negate;
 
@@ -258,7 +334,7 @@ bool condition_test(Condition *c) {
         }
 }
 
-bool condition_test_list(Condition *first) {
+bool condition_test_list(const char *unit, Condition *first) {
         Condition *c;
         int triggered = -1;
 
@@ -273,6 +349,16 @@ bool condition_test_list(Condition *first) {
                 bool b;
 
                 b = condition_test(c);
+                if (unit)
+                        log_debug_unit(unit,
+                                       "%s=%s%s%s %s for %s.",
+                                       condition_type_to_string(c->type),
+                                       c->trigger ? "|" : "",
+                                       c->negate ? "!" : "",
+                                       c->parameter,
+                                       b ? "succeeded" : "failed",
+                                       unit);
+                c->state = b ? 1 : -1;
 
                 if (!c->trigger && !b)
                         return false;
@@ -292,12 +378,13 @@ void condition_dump(Condition *c, FILE *f, const char *prefix) {
                 prefix = "";
 
         fprintf(f,
-                "%s\t%s: %s%s%s\n",
+                "%s\t%s: %s%s%s %s\n",
                 prefix,
                 condition_type_to_string(c->type),
                 c->trigger ? "|" : "",
                 c->negate ? "!" : "",
-                c->parameter);
+                c->parameter,
+                c->state < 0 ? "failed" : c->state > 0 ? "succeeded" : "untested");
 }
 
 void condition_dump_list(Condition *first, FILE *f, const char *prefix) {
@@ -313,10 +400,16 @@ static const char* const condition_type_table[_CONDITION_TYPE_MAX] = {
         [CONDITION_PATH_IS_DIRECTORY] = "ConditionPathIsDirectory",
         [CONDITION_PATH_IS_SYMBOLIC_LINK] = "ConditionPathIsSymbolicLink",
         [CONDITION_PATH_IS_MOUNT_POINT] = "ConditionPathIsMountPoint",
+        [CONDITION_PATH_IS_READ_WRITE] = "ConditionPathIsReadWrite",
         [CONDITION_DIRECTORY_NOT_EMPTY] = "ConditionDirectoryNotEmpty",
+        [CONDITION_FILE_NOT_EMPTY] = "ConditionFileNotEmpty",
+        [CONDITION_FILE_IS_EXECUTABLE] = "ConditionFileIsExecutable",
         [CONDITION_KERNEL_COMMAND_LINE] = "ConditionKernelCommandLine",
         [CONDITION_VIRTUALIZATION] = "ConditionVirtualization",
         [CONDITION_SECURITY] = "ConditionSecurity",
+        [CONDITION_CAPABILITY] = "ConditionCapability",
+        [CONDITION_HOST] = "ConditionHost",
+        [CONDITION_AC_POWER] = "ConditionACPower",
         [CONDITION_NULL] = "ConditionNull"
 };