upload http

JIRA: BOTTLENECK-10

Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>

6 files changed, 608 insertions, 0 deletions

diff --git a/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/.libs/shm.o b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/.libs/shm.o
new file mode 100644
index 00000000..354fe508
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/.libs/shm.o
diff --git a/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/Makefile b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/Makefile
new file mode 100644
index 00000000..3acd6980
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/Makefile
@@ -0,0 +1,14 @@
+srcdir = .
+
+
+TARGETS = shm.lo
+
+# bring in rules.mk for standard functionality
+include /bottlenecks/rubbos/app/httpd-2.0.64/srclib/apr/build/apr_rules.mk
+
+INCDIR=../../include
+INCDIR2=$(INCDIR)/arch
+INCDIR3=$(INCDIR)/arch/unix
+INCLUDES=-I$(INCDIR) -I$(INCDIR2) -I$(INCDIR3)
+
+# DO NOT REMOVE
diff --git a/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/Makefile.in b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/Makefile.in
new file mode 100644
index 00000000..b155d75b
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/Makefile.in
@@ -0,0 +1,14 @@
+srcdir = @srcdir@
+VPATH = @srcdir@
+
+TARGETS = shm.lo
+
+# bring in rules.mk for standard functionality
+@INCLUDE_RULES@
+
+INCDIR=../../include
+INCDIR2=$(INCDIR)/arch
+INCDIR3=$(INCDIR)/arch/unix
+INCLUDES=-I$(INCDIR) -I$(INCDIR2) -I$(INCDIR3)
+
+# DO NOT REMOVE
diff --git a/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.c b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.c
new file mode 100644
index 00000000..9af33fa4
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.c
@@ -0,0 +1,568 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "apr_arch_shm.h"
+
+#include "apr_general.h"
+#include "apr_errno.h"
+#include "apr_user.h"
+#include "apr_strings.h"
+
+static apr_status_t shm_cleanup_owner(void *m_)
+{
+    apr_shm_t *m = (apr_shm_t *)m_;
+
+    /* anonymous shared memory */
+    if (m->filename == NULL) {
+#if APR_USE_SHMEM_MMAP_ZERO || APR_USE_SHMEM_MMAP_ANON
+        if (munmap(m->base, m->realsize) == -1) {
+            return errno;
+        }
+        return APR_SUCCESS;
+#endif
+#if APR_USE_SHMEM_SHMGET_ANON
+        if (shmdt(m->base) == -1) {
+            return errno;
+        }
+        /* This segment will automatically remove itself after all
+         * references have detached. */
+        return APR_SUCCESS;
+#endif
+    }
+
+    /* name-based shared memory */
+    else {
+#if APR_USE_SHMEM_MMAP_TMP
+        apr_status_t rv;
+
+        if (munmap(m->base, m->realsize) == -1) {
+            return errno;
+        }
+        rv = apr_file_remove(m->filename, m->pool);
+        if (rv != APR_SUCCESS) {
+            return rv;
+        }
+        return APR_SUCCESS;
+#endif
+#if APR_USE_SHMEM_MMAP_SHM
+        if (munmap(m->base, m->realsize) == -1) {
+            return errno;
+        }
+        if (shm_unlink(m->filename) == -1) {
+            return errno;
+        }
+        return APR_SUCCESS;
+#endif
+#if APR_USE_SHMEM_SHMGET
+        apr_status_t rv;
+
+        /* Indicate that the segment is to be destroyed as soon
+         * as all processes have detached. This also disallows any
+         * new attachments to the segment. */
+        if (shmctl(m->shmid, IPC_RMID, NULL) == -1) {
+            return errno;
+        }
+        if (shmdt(m->base) == -1) {
+            return errno;
+        }
+        rv = apr_file_remove(m->filename, m->pool);
+        if (rv != APR_SUCCESS) {
+            return rv;
+        }
+        return APR_SUCCESS;
+#endif
+    }
+
+    return APR_ENOTIMPL;
+}
+
+APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m,
+                                         apr_size_t reqsize, 
+                                         const char *filename,
+                                         apr_pool_t *pool)
+{
+    apr_shm_t *new_m;
+    apr_status_t status;
+#if APR_USE_SHMEM_SHMGET || APR_USE_SHMEM_SHMGET_ANON
+    struct shmid_ds shmbuf;
+    apr_uid_t uid;
+    apr_gid_t gid;
+#endif
+#if APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM || \
+    APR_USE_SHMEM_MMAP_ZERO
+    int tmpfd;
+#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
+    apr_file_t *file;   /* file where metadata is stored */
+#endif
+
+    /* Check if they want anonymous or name-based shared memory */
+    if (filename == NULL) {
+#if APR_USE_SHMEM_MMAP_ZERO || APR_USE_SHMEM_MMAP_ANON
+        new_m = apr_palloc(pool, sizeof(apr_shm_t));
+        if (!new_m) {
+            return APR_ENOMEM;
+        }
+        new_m->pool = pool;
+        new_m->reqsize = reqsize;
+        new_m->realsize = reqsize + 
+            APR_ALIGN_DEFAULT(sizeof(apr_size_t)); /* room for metadata */
+        new_m->filename = NULL;
+    
+#if APR_USE_SHMEM_MMAP_ZERO
+        status = apr_file_open(&file, "/dev/zero", APR_READ | APR_WRITE, 
+                               APR_OS_DEFAULT, pool);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+        status = apr_os_file_get(&tmpfd, file);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        new_m->base = mmap(NULL, new_m->realsize, PROT_READ|PROT_WRITE,
+                           MAP_SHARED, tmpfd, 0);
+        if (new_m->base == (void *)MAP_FAILED) {
+            return errno;
+        }
+
+        status = apr_file_close(file);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        /* store the real size in the metadata */
+        *(apr_size_t*)(new_m->base) = new_m->realsize;
+        /* metadata isn't usable */
+        new_m->usable = (char *)new_m->base + APR_ALIGN_DEFAULT(sizeof(apr_size_t));
+
+        apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
+                                  apr_pool_cleanup_null);
+        *m = new_m;
+        return APR_SUCCESS;
+
+#elif APR_USE_SHMEM_MMAP_ANON
+        new_m->base = mmap(NULL, new_m->realsize, PROT_READ|PROT_WRITE,
+                           MAP_ANON|MAP_SHARED, -1, 0);
+        if (new_m->base == (void *)MAP_FAILED) {
+            return errno;
+        }
+
+        /* store the real size in the metadata */
+        *(apr_size_t*)(new_m->base) = new_m->realsize;
+        /* metadata isn't usable */
+        new_m->usable = (char *)new_m->base + APR_ALIGN_DEFAULT(sizeof(apr_size_t));
+
+        apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
+                                  apr_pool_cleanup_null);
+        *m = new_m;
+        return APR_SUCCESS;
+
+#endif /* APR_USE_SHMEM_MMAP_ZERO */
+#endif /* APR_USE_SHMEM_MMAP_ZERO || APR_USE_SHMEM_MMAP_ANON */
+#if APR_USE_SHMEM_SHMGET_ANON
+
+        new_m = apr_palloc(pool, sizeof(apr_shm_t));
+        if (!new_m) {
+            return APR_ENOMEM;
+        }
+        new_m->pool = pool;
+        new_m->reqsize = reqsize;
+        new_m->realsize = reqsize;
+        new_m->filename = NULL;
+
+        if ((new_m->shmid = shmget(IPC_PRIVATE, new_m->realsize,
+                                   SHM_R | SHM_W | IPC_CREAT)) < 0) {
+            return errno;
+        }
+
+        if ((new_m->base = shmat(new_m->shmid, NULL, 0)) == (void *)-1) {
+            return errno;
+        }
+        new_m->usable = new_m->base;
+
+        if (shmctl(new_m->shmid, IPC_STAT, &shmbuf) == -1) {
+            return errno;
+        }
+        apr_uid_current(&uid, &gid, pool);
+        shmbuf.shm_perm.uid = uid;
+        shmbuf.shm_perm.gid = gid;
+        if (shmctl(new_m->shmid, IPC_SET, &shmbuf) == -1) {
+            return errno;
+        }
+
+        /* Remove the segment once use count hits zero.
+         * We will not attach to this segment again, since it is
+         * anonymous memory, so it is ok to mark it for deletion.
+         */
+        if (shmctl(new_m->shmid, IPC_RMID, NULL) == -1) {
+            return errno;
+        }
+
+        apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
+                                  apr_pool_cleanup_null);
+        *m = new_m;
+        return APR_SUCCESS;
+#endif /* APR_USE_SHMEM_SHMGET_ANON */
+        /* It is an error if they want anonymous memory but we don't have it. */
+        return APR_ENOTIMPL; /* requested anonymous but we don't have it */
+    }
+
+    /* Name-based shared memory */
+    else {
+        new_m = apr_palloc(pool, sizeof(apr_shm_t));
+        if (!new_m) {
+            return APR_ENOMEM;
+        }
+        new_m->pool = pool;
+        new_m->reqsize = reqsize;
+        new_m->filename = apr_pstrdup(pool, filename);
+
+#if APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM
+        new_m->realsize = reqsize + 
+            APR_ALIGN_DEFAULT(sizeof(apr_size_t)); /* room for metadata */
+        /* FIXME: Ignore error for now. *
+         * status = apr_file_remove(file, pool);*/
+        status = APR_SUCCESS;
+    
+#if APR_USE_SHMEM_MMAP_TMP
+        /* FIXME: Is APR_OS_DEFAULT sufficient? */
+        status = apr_file_open(&file, filename, 
+                               APR_READ | APR_WRITE | APR_CREATE | APR_EXCL,
+                               APR_OS_DEFAULT, pool);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        status = apr_os_file_get(&tmpfd, file);
+        if (status != APR_SUCCESS) {
+            apr_file_close(file); /* ignore errors, we're failing */
+            apr_file_remove(new_m->filename, new_m->pool);
+            return status;
+        }
+
+        status = apr_file_trunc(file, new_m->realsize);
+        if (status != APR_SUCCESS) {
+            apr_file_close(file); /* ignore errors, we're failing */
+            apr_file_remove(new_m->filename, new_m->pool);
+            return status;
+        }
+
+        new_m->base = mmap(NULL, new_m->realsize, PROT_READ | PROT_WRITE,
+                           MAP_SHARED, tmpfd, 0);
+        /* FIXME: check for errors */
+
+        status = apr_file_close(file);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+#endif /* APR_USE_SHMEM_MMAP_TMP */
+#if APR_USE_SHMEM_MMAP_SHM
+        /* FIXME: Is APR_OS_DEFAULT sufficient? */
+        tmpfd = shm_open(filename, O_RDWR | O_CREAT | O_EXCL, APR_OS_DEFAULT);
+        if (tmpfd == -1) {
+            return errno;
+        }
+
+        status = apr_os_file_put(&file, &tmpfd,
+                                 APR_READ | APR_WRITE | APR_CREATE | APR_EXCL,
+                                 pool); 
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        status = apr_file_trunc(file, new_m->realsize);
+        if (status != APR_SUCCESS) {
+            shm_unlink(filename); /* we're failing, remove the object */
+            return status;
+        }
+        new_m->base = mmap(NULL, reqsize, PROT_READ | PROT_WRITE,
+                           MAP_SHARED, tmpfd, 0);
+
+        /* FIXME: check for errors */
+
+        /* FIXME: Is it ok to close this file when using shm_open?? */
+        status = apr_file_close(file);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+#endif /* APR_USE_SHMEM_MMAP_SHM */
+
+        /* store the real size in the metadata */
+        *(apr_size_t*)(new_m->base) = new_m->realsize;
+        /* metadata isn't usable */
+        new_m->usable = (char *)new_m->base + APR_ALIGN_DEFAULT(sizeof(apr_size_t));
+
+        apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
+                                  apr_pool_cleanup_null);
+        *m = new_m;
+        return APR_SUCCESS;
+
+#endif /* APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM */
+
+#if APR_USE_SHMEM_SHMGET
+        new_m->realsize = reqsize;
+
+        /* FIXME: APR_OS_DEFAULT is too permissive, switch to 600 I think. */
+        status = apr_file_open(&file, filename, 
+                               APR_WRITE | APR_CREATE | APR_EXCL,
+                               APR_OS_DEFAULT, pool);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        /* ftok() (on solaris at least) requires that the file actually
+         * exist before calling ftok(). */
+        shmkey = ftok(filename, 1);
+        if (shmkey == (key_t)-1) {
+            return errno;
+        }
+
+        if ((new_m->shmid = shmget(shmkey, new_m->realsize,
+                                   SHM_R | SHM_W | IPC_CREAT | IPC_EXCL)) < 0) {
+            return errno;
+        }
+
+        if ((new_m->base = shmat(new_m->shmid, NULL, 0)) == (void *)-1) {
+            return errno;
+        }
+        new_m->usable = new_m->base;
+
+        if (shmctl(new_m->shmid, IPC_STAT, &shmbuf) == -1) {
+            return errno;
+        }
+        apr_uid_current(&uid, &gid, pool);
+        shmbuf.shm_perm.uid = uid;
+        shmbuf.shm_perm.gid = gid;
+        if (shmctl(new_m->shmid, IPC_SET, &shmbuf) == -1) {
+            return errno;
+        }
+
+        nbytes = sizeof(reqsize);
+        status = apr_file_write(file, (const void *)&reqsize,
+                                &nbytes);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+        status = apr_file_close(file);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
+                                  apr_pool_cleanup_null);
+        *m = new_m; 
+        return APR_SUCCESS;
+
+#endif /* APR_USE_SHMEM_SHMGET */
+    }
+
+    return APR_ENOTIMPL;
+}
+
+APR_DECLARE(apr_status_t) apr_shm_destroy(apr_shm_t *m)
+{
+    return apr_pool_cleanup_run(m->pool, m, shm_cleanup_owner);
+}
+
+static apr_status_t shm_cleanup_attach(void *m_)
+{
+    apr_shm_t *m = (apr_shm_t *)m_;
+
+    if (m->filename == NULL) {
+        /* It doesn't make sense to detach from an anonymous memory segment. */
+        return APR_EINVAL;
+    }
+    else {
+#if APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM
+        if (munmap(m->base, m->realsize) == -1) {
+            return errno;
+        }
+        return APR_SUCCESS;
+#endif /* APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM */
+#if APR_USE_SHMEM_SHMGET
+        if (shmdt(m->base) == -1) {
+            return errno;
+        }
+        return APR_SUCCESS;
+#endif
+    }
+
+    return APR_ENOTIMPL;
+}
+
+APR_DECLARE(apr_status_t) apr_shm_attach(apr_shm_t **m,
+                                         const char *filename,
+                                         apr_pool_t *pool)
+{
+    if (filename == NULL) {
+        /* It doesn't make sense to attach to a segment if you don't know
+         * the filename. */
+        return APR_EINVAL;
+    }
+    else {
+#if APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM
+        apr_shm_t *new_m;
+        apr_status_t status;
+        int tmpfd;
+        apr_file_t *file;   /* file where metadata is stored */
+        apr_size_t nbytes;
+
+        new_m = apr_palloc(pool, sizeof(apr_shm_t));
+        if (!new_m) {
+            return APR_ENOMEM;
+        }
+        new_m->pool = pool;
+        new_m->filename = apr_pstrdup(pool, filename);
+
+        status = apr_file_open(&file, filename, 
+                               APR_READ | APR_WRITE,
+                               APR_OS_DEFAULT, pool);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+        status = apr_os_file_get(&tmpfd, file);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        nbytes = sizeof(new_m->realsize);
+        status = apr_file_read(file, (void *)&(new_m->realsize),
+                               &nbytes);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        status = apr_os_file_get(&tmpfd, file);
+        if (status != APR_SUCCESS) {
+            apr_file_close(file); /* ignore errors, we're failing */
+            apr_file_remove(new_m->filename, new_m->pool);
+            return status;
+        }
+
+        new_m->reqsize = new_m->realsize - sizeof(apr_size_t);
+
+        new_m->base = mmap(NULL, new_m->realsize, PROT_READ | PROT_WRITE,
+                           MAP_SHARED, tmpfd, 0);
+        /* FIXME: check for errors */
+        
+        status = apr_file_close(file);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        /* metadata isn't part of the usable segment */
+        new_m->usable = (char *)new_m->base + APR_ALIGN_DEFAULT(sizeof(apr_size_t));
+
+        apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_attach,
+                                  apr_pool_cleanup_null);
+        *m = new_m;
+        return APR_SUCCESS;
+
+#endif /* APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM */
+#if APR_USE_SHMEM_SHMGET
+        apr_shm_t *new_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));
+        if (!new_m) {
+            return APR_ENOMEM;
+        }
+
+        /* FIXME: does APR_OS_DEFAULT matter for reading? */
+        status = apr_file_open(&file, filename, 
+                               APR_READ, APR_OS_DEFAULT, pool);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        nbytes = sizeof(new_m->reqsize);
+        status = apr_file_read(file, (void *)&(new_m->reqsize),
+                               &nbytes);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+        status = apr_file_close(file);
+        if (status != APR_SUCCESS) {
+            return status;
+        }
+
+        new_m->filename = apr_pstrdup(pool, filename);
+        new_m->pool = pool;
+        shmkey = ftok(filename, 1);
+        if (shmkey == (key_t)-1) {
+            return errno;
+        }
+        if ((new_m->shmid = shmget(shmkey, 0, SHM_R | SHM_W)) == -1) {
+            return errno;
+        }
+        if ((new_m->base = shmat(new_m->shmid, NULL, 0)) == (void *)-1) {
+            return errno;
+        }
+        new_m->usable = new_m->base;
+        new_m->realsize = new_m->reqsize;
+
+        apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_attach,
+                                  apr_pool_cleanup_null);
+        *m = new_m;
+        return APR_SUCCESS;
+
+#endif /* APR_USE_SHMEM_SHMGET */
+    }
+
+    return APR_ENOTIMPL;
+}
+
+APR_DECLARE(apr_status_t) apr_shm_detach(apr_shm_t *m)
+{
+    apr_status_t rv = shm_cleanup_attach(m);
+    apr_pool_cleanup_kill(m->pool, m, shm_cleanup_attach);
+    return rv;
+}
+
+APR_DECLARE(void *) apr_shm_baseaddr_get(const apr_shm_t *m)
+{
+    return m->usable;
+}
+
+APR_DECLARE(apr_size_t) apr_shm_size_get(const apr_shm_t *m)
+{
+    return m->reqsize;
+}
+
+APR_POOL_IMPLEMENT_ACCESSOR(shm)
+
+APR_DECLARE(apr_status_t) apr_os_shm_get(apr_os_shm_t *osshm,
+                                         apr_shm_t *shm)
+{
+    return APR_ENOTIMPL;
+}
+
+APR_DECLARE(apr_status_t) apr_os_shm_put(apr_shm_t **m,
+                                         apr_os_shm_t *osshm,
+                                         apr_pool_t *pool)
+{
+    return APR_ENOTIMPL;
+}    
+
diff --git a/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.lo b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.lo
new file mode 100644
index 00000000..ebc6464d
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.lo
@@ -0,0 +1,12 @@
+# shm.lo - a libtool object file
+# Generated by ltmain.sh - GNU libtool 1.5.26 (1.1220.2.493 2008/02/01 16:58:18)
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Name of the PIC object.
+pic_object='.libs/shm.o'
+
+# Name of the non-PIC object.
+non_pic_object='shm.o'
+
diff --git a/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.o b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.o
new file mode 100644
index 00000000..a10a59ff
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/srclib/apr/shmem/unix/shm.o