From 04d8a606222a70a6d4bf8d81674ff2c0bb5a7841 Mon Sep 17 00:00:00 2001
From: Mladen Turk <mturk@apache.org>
Date: Sat, 7 Feb 2009 09:05:54 +0000
Subject: Add object perms set macros and implement them for shm and mutex

git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@741862 13f79535-47bb-0310-9956-ffa450edef68
---
 shmem/beos/shm.c  |  2 ++
 shmem/os2/shm.c   |  2 ++
 shmem/unix/shm.c  | 40 ++++++++++++++++++++++++++++++----------
 shmem/win32/shm.c |  2 ++
 4 files changed, 36 insertions(+), 10 deletions(-)

(limited to 'shmem')

diff --git a/shmem/beos/shm.c b/shmem/beos/shm.c
index 1f06f78ac..d6b888b08 100644
--- a/shmem/beos/shm.c
+++ b/shmem/beos/shm.c
@@ -149,6 +149,8 @@ APR_DECLARE(apr_size_t) apr_shm_size_get(const apr_shm_t *m)
     return m->reqsize;
 }
 
+APR_PERMS_SET_ENOTIMPL(shm)
+
 APR_POOL_IMPLEMENT_ACCESSOR(shm)
 
 APR_DECLARE(apr_status_t) apr_os_shm_get(apr_os_shm_t *osshm,
diff --git a/shmem/os2/shm.c b/shmem/os2/shm.c
index 340cae407..dcdb41587 100644
--- a/shmem/os2/shm.c
+++ b/shmem/os2/shm.c
@@ -113,6 +113,8 @@ APR_DECLARE(apr_size_t) apr_shm_size_get(const apr_shm_t *m)
     return size;
 }
 
+APR_PERMS_SET_ENOTIMPL(shm)
+
 APR_POOL_IMPLEMENT_ACCESSOR(shm)
 
 APR_DECLARE(apr_status_t) apr_os_shm_get(apr_os_shm_t *osshm,
diff --git a/shmem/unix/shm.c b/shmem/unix/shm.c
index 14bb34491..db18a79df 100644
--- a/shmem/unix/shm.c
+++ b/shmem/unix/shm.c
@@ -105,7 +105,6 @@ APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m,
 #endif
 #if APR_USE_SHMEM_SHMGET
     apr_size_t nbytes;
-    key_t shmkey;
 #endif
 #if APR_USE_SHMEM_MMAP_ZERO || APR_USE_SHMEM_SHMGET || \
     APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM
@@ -180,8 +179,8 @@ APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m,
         new_m->reqsize = reqsize;
         new_m->realsize = reqsize;
         new_m->filename = NULL;
-
-        if ((new_m->shmid = shmget(IPC_PRIVATE, new_m->realsize,
+        new_m->shmkey = IPC_PRIVATE;
+        if ((new_m->shmid = shmget(new_m->shmkey, new_m->realsize,
                                    SHM_R | SHM_W | IPC_CREAT)) < 0) {
             return errno;
         }
@@ -318,12 +317,12 @@ APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m,
 
         /* ftok() (on solaris at least) requires that the file actually
          * exist before calling ftok(). */
-        shmkey = ftok(filename, 1);
-        if (shmkey == (key_t)-1) {
+        new_m->shmkey = ftok(filename, 1);
+        if (new_m->shmkey == (key_t)-1) {
             return errno;
         }
 
-        if ((new_m->shmid = shmget(shmkey, new_m->realsize,
+        if ((new_m->shmid = shmget(new_m->shmkey, new_m->realsize,
                                    SHM_R | SHM_W | IPC_CREAT | IPC_EXCL)) < 0) {
             return errno;
         }
@@ -526,7 +525,6 @@ APR_DECLARE(apr_status_t) apr_shm_attach(apr_shm_t **m,
         apr_status_t status;
         apr_file_t *file;   /* file where metadata is stored */
         apr_size_t nbytes;
-        key_t shmkey;
 
         new_m = apr_palloc(pool, sizeof(apr_shm_t));
 
@@ -549,11 +547,11 @@ APR_DECLARE(apr_status_t) apr_shm_attach(apr_shm_t **m,
 
         new_m->filename = apr_pstrdup(pool, filename);
         new_m->pool = pool;
-        shmkey = ftok(filename, 1);
-        if (shmkey == (key_t)-1) {
+        new_m->shmkey = ftok(filename, 1);
+        if (new_m->shmkey == (key_t)-1) {
             return errno;
         }
-        if ((new_m->shmid = shmget(shmkey, 0, SHM_R | SHM_W)) == -1) {
+        if ((new_m->shmid = shmget(new_m->shmkey, 0, SHM_R | SHM_W)) == -1) {
             return errno;
         }
         if ((new_m->base = shmat(new_m->shmid, NULL, 0)) == (void *)-1) {
@@ -590,6 +588,28 @@ APR_DECLARE(apr_size_t) apr_shm_size_get(const apr_shm_t *m)
     return m->reqsize;
 }
 
+APR_PERMS_SET_IMPLEMENT(shm)
+{
+#if APR_USE_SHMEM_SHMGET || APR_USE_SHMEM_SHMGET_ANON
+    struct shmid_ds shmbuf;
+    int shmid;
+    apr_shm_t *m = (apr_shm_t *)theshm;
+
+    if ((shmid = shmget(m->shmkey, 0, SHM_R | SHM_W)) == -1) {
+        return errno;
+    }
+    shmbuf.shm_perm.uid  = uid;
+    shmbuf.shm_perm.gid  = gid;
+    shmbuf.shm_perm.mode = apr_unix_perms2mode(perms);
+    if (shmctl(shmid, IPC_SET, &shmbuf) == -1) {
+        return errno;
+    }
+    return APR_SUCCESS;
+#else
+    return APR_ENOTIMPL;
+#endif
+}
+
 APR_POOL_IMPLEMENT_ACCESSOR(shm)
 
 APR_DECLARE(apr_status_t) apr_os_shm_get(apr_os_shm_t *osshm,
diff --git a/shmem/win32/shm.c b/shmem/win32/shm.c
index da736aa62..d16de5469 100644
--- a/shmem/win32/shm.c
+++ b/shmem/win32/shm.c
@@ -281,6 +281,8 @@ APR_DECLARE(apr_size_t) apr_shm_size_get(const apr_shm_t *m)
     return m->length;
 }
 
+APR_PERMS_SET_ENOTIMPL(shm)
+
 APR_POOL_IMPLEMENT_ACCESSOR(shm)
 
 APR_DECLARE(apr_status_t) apr_os_shm_get(apr_os_shm_t *osshm,
-- 
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