X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fclean-ipc.c;h=c92ba677e67be0a41480741d8b8b0167747bf7e1;hb=b1aedf6d6e37dbc537c22dfa399da181ab21e5ec;hp=ddd42cc2b2b742250fbda1cd92e3615e5721303b;hpb=66cdd0f2d0670b054bd27dad16fcb5838b11dde3;p=elogind.git

diff --git a/src/shared/clean-ipc.c b/src/shared/clean-ipc.c
index ddd42cc2b..c92ba677e 100644
--- a/src/shared/clean-ipc.c
+++ b/src/shared/clean-ipc.c
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
 /***
   This file is part of systemd.
 
@@ -19,19 +17,30 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <mqueue.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
 #include <sys/ipc.h>
-#include <sys/shm.h>
-#include <sys/sem.h>
 #include <sys/msg.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
 #include <sys/stat.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <mqueue.h>
+#include <unistd.h>
 
-#include "util.h"
-#include "strv.h"
 #include "clean-ipc.h"
+#include "dirent-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "log.h"
+#include "macro.h"
+#include "string-util.h"
+#include "strv.h"
 
 static int clean_sysvipc_shm(uid_t delete_uid) {
         _cleanup_fclose_ FILE *f = NULL;
@@ -44,8 +53,7 @@ static int clean_sysvipc_shm(uid_t delete_uid) {
                 if (errno == ENOENT)
                         return 0;
 
-                log_warning("Failed to open /proc/sysvipc/shm: %m");
-                return -errno;
+                return log_warning_errno(errno, "Failed to open /proc/sysvipc/shm: %m");
         }
 
         FOREACH_LINE(line, f, goto fail) {
@@ -78,16 +86,16 @@ static int clean_sysvipc_shm(uid_t delete_uid) {
                         if (errno == EIDRM || errno == EINVAL)
                                 continue;
 
-                        log_warning("Failed to remove SysV shared memory segment %i: %m", shmid);
-                        ret = -errno;
+                        ret = log_warning_errno(errno,
+                                                "Failed to remove SysV shared memory segment %i: %m",
+                                                shmid);
                 }
         }
 
         return ret;
 
 fail:
-        log_warning("Failed to read /proc/sysvipc/shm: %m");
-        return -errno;
+        return log_warning_errno(errno, "Failed to read /proc/sysvipc/shm: %m");
 }
 
 static int clean_sysvipc_sem(uid_t delete_uid) {
@@ -101,8 +109,7 @@ static int clean_sysvipc_sem(uid_t delete_uid) {
                 if (errno == ENOENT)
                         return 0;
 
-                log_warning("Failed to open /proc/sysvipc/sem: %m");
-                return -errno;
+                return log_warning_errno(errno, "Failed to open /proc/sysvipc/sem: %m");
         }
 
         FOREACH_LINE(line, f, goto fail) {
@@ -130,16 +137,16 @@ static int clean_sysvipc_sem(uid_t delete_uid) {
                         if (errno == EIDRM || errno == EINVAL)
                                 continue;
 
-                        log_warning("Failed to remove SysV semaphores object %i: %m", semid);
-                        ret = -errno;
+                        ret = log_warning_errno(errno,
+                                                "Failed to remove SysV semaphores object %i: %m",
+                                                semid);
                 }
         }
 
         return ret;
 
 fail:
-        log_warning("Failed to read /proc/sysvipc/sem: %m");
-        return -errno;
+        return log_warning_errno(errno, "Failed to read /proc/sysvipc/sem: %m");
 }
 
 static int clean_sysvipc_msg(uid_t delete_uid) {
@@ -153,8 +160,7 @@ static int clean_sysvipc_msg(uid_t delete_uid) {
                 if (errno == ENOENT)
                         return 0;
 
-                log_warning("Failed to open /proc/sysvipc/msg: %m");
-                return -errno;
+                return log_warning_errno(errno, "Failed to open /proc/sysvipc/msg: %m");
         }
 
         FOREACH_LINE(line, f, goto fail) {
@@ -183,16 +189,16 @@ static int clean_sysvipc_msg(uid_t delete_uid) {
                         if (errno == EIDRM || errno == EINVAL)
                                 continue;
 
-                        log_warning("Failed to remove SysV message queue %i: %m", msgid);
-                        ret = -errno;
+                        ret = log_warning_errno(errno,
+                                                "Failed to remove SysV message queue %i: %m",
+                                                msgid);
                 }
         }
 
         return ret;
 
 fail:
-        log_warning("Failed to read /proc/sysvipc/msg: %m");
-        return -errno;
+        return log_warning_errno(errno, "Failed to read /proc/sysvipc/msg: %m");
 }
 
 static int clean_posix_shm_internal(DIR *dir, uid_t uid) {
@@ -211,7 +217,7 @@ static int clean_posix_shm_internal(DIR *dir, uid_t uid) {
                         if (errno == ENOENT)
                                 continue;
 
-                        log_warning("Failed to stat() POSIX shared memory segment %s: %m", de->d_name);
+                        log_warning_errno(errno, "Failed to stat() POSIX shared memory segment %s: %m", de->d_name);
                         ret = -errno;
                         continue;
                 }
@@ -225,7 +231,7 @@ static int clean_posix_shm_internal(DIR *dir, uid_t uid) {
                         kid = xopendirat(dirfd(dir), de->d_name, O_NOFOLLOW|O_NOATIME);
                         if (!kid) {
                                 if (errno != ENOENT) {
-                                        log_warning("Failed to enter shared memory directory %s: %m", de->d_name);
+                                        log_warning_errno(errno, "Failed to enter shared memory directory %s: %m", de->d_name);
                                         ret = -errno;
                                 }
                         } else {
@@ -239,7 +245,7 @@ static int clean_posix_shm_internal(DIR *dir, uid_t uid) {
                                 if (errno == ENOENT)
                                         continue;
 
-                                log_warning("Failed to remove POSIX shared memory directory %s: %m", de->d_name);
+                                log_warning_errno(errno, "Failed to remove POSIX shared memory directory %s: %m", de->d_name);
                                 ret = -errno;
                         }
                 } else {
@@ -249,7 +255,7 @@ static int clean_posix_shm_internal(DIR *dir, uid_t uid) {
                                 if (errno == ENOENT)
                                         continue;
 
-                                log_warning("Failed to remove POSIX shared memory segment %s: %m", de->d_name);
+                                log_warning_errno(errno, "Failed to remove POSIX shared memory segment %s: %m", de->d_name);
                                 ret = -errno;
                         }
                 }
@@ -258,7 +264,7 @@ static int clean_posix_shm_internal(DIR *dir, uid_t uid) {
         return ret;
 
 fail:
-        log_warning("Failed to read /dev/shm: %m");
+        log_warning_errno(errno, "Failed to read /dev/shm: %m");
         return -errno;
 }
 
@@ -270,13 +276,13 @@ static int clean_posix_shm(uid_t uid) {
                 if (errno == ENOENT)
                         return 0;
 
-                log_warning("Failed to open /dev/shm: %m");
-                return -errno;
+                return log_warning_errno(errno, "Failed to open /dev/shm: %m");
         }
 
         return clean_posix_shm_internal(dir, uid);
 }
 
+#if 0 /// UNNEEDED by elogind
 static int clean_posix_mq(uid_t uid) {
         _cleanup_closedir_ DIR *dir = NULL;
         struct dirent *de;
@@ -287,8 +293,7 @@ static int clean_posix_mq(uid_t uid) {
                 if (errno == ENOENT)
                         return 0;
 
-                log_warning("Failed to open /dev/mqueue: %m");
-                return -errno;
+                return log_warning_errno(errno, "Failed to open /dev/mqueue: %m");
         }
 
         FOREACH_DIRENT(de, dir, goto fail) {
@@ -302,8 +307,9 @@ static int clean_posix_mq(uid_t uid) {
                         if (errno == ENOENT)
                                 continue;
 
-                        log_warning("Failed to stat() MQ segment %s: %m", de->d_name);
-                        ret = -errno;
+                        ret = log_warning_errno(errno,
+                                                "Failed to stat() MQ segment %s: %m",
+                                                de->d_name);
                         continue;
                 }
 
@@ -317,23 +323,24 @@ static int clean_posix_mq(uid_t uid) {
                         if (errno == ENOENT)
                                 continue;
 
-                        log_warning("Failed to unlink POSIX message queue %s: %m", fn);
-                        ret = -errno;
+                        ret = log_warning_errno(errno,
+                                                "Failed to unlink POSIX message queue %s: %m",
+                                                fn);
                 }
         }
 
         return ret;
 
 fail:
-        log_warning("Failed to read /dev/mqueue: %m");
-        return -errno;
+        return log_warning_errno(errno, "Failed to read /dev/mqueue: %m");
 }
+#endif // 0
 
 int clean_ipc(uid_t uid) {
         int ret = 0, r;
 
-        /* Refuse to clean IPC of the root user */
-        if (uid == 0)
+        /* Refuse to clean IPC of the root and system users */
+        if (uid <= SYSTEM_UID_MAX)
                 return 0;
 
         r = clean_sysvipc_shm(uid);
@@ -352,9 +359,12 @@ int clean_ipc(uid_t uid) {
         if (r < 0)
                 ret = r;
 
+
+#if 0 /// elogind does not use mq_open anywhere
         r = clean_posix_mq(uid);
         if (r < 0)
                 ret = r;
+#endif // 0
 
         return ret;
 }