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authorDave Barach <dave@barachs.net>2016-05-31 14:05:46 -0400
committerChris Luke <chris_luke@cable.comcast.com>2016-06-01 20:05:08 +0000
commit16c75df7976003305f57885639cbc4df4a6a12cf (patch)
tree10d27134bbd595985645f461738632f7de2f92b8 /vlib-api/vlibmemory/memory_shared.c
parentc79491571fcdb3c77fc7c07c6ea247c14ba3e406 (diff)
VPP-83 Allow non-privileged clients to use the vpp binary API.
Use the command line argument "api-segment { uid <nnn> gid <nnn> }" to configure shared memory segment file ownership. Defaults to uid = gid = 0. Shared-memory segments are explicitly set to 0770 mode, aka "rwxrwx---". Change-Id: Ic5d596b68139add61e7de6ace035c57dfd030111 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'vlib-api/vlibmemory/memory_shared.c')
-rw-r--r--vlib-api/vlibmemory/memory_shared.c43
1 files changed, 20 insertions, 23 deletions
diff --git a/vlib-api/vlibmemory/memory_shared.c b/vlib-api/vlibmemory/memory_shared.c
index a32194310a4..71150fdc9cb 100644
--- a/vlib-api/vlibmemory/memory_shared.c
+++ b/vlib-api/vlibmemory/memory_shared.c
@@ -197,9 +197,23 @@ void vl_set_memory_root_path (char *name)
am->root_path = name;
}
+void vl_set_memory_uid (int uid)
+{
+ api_main_t *am = &api_main;
+
+ am->api_uid = uid;
+}
+
+void vl_set_memory_gid (int gid)
+{
+ api_main_t *am = &api_main;
+
+ am->api_gid = gid;
+}
+
int vl_map_shmem (char *region_name, int is_vlib)
{
- svm_map_region_args_t *a = 0;
+ svm_map_region_args_t _a, *a = &_a;
svm_region_t *vlib_rp, *root_rp;
void *oldheap;
vl_shmem_hdr_t *shmem_hdr=0;
@@ -210,16 +224,16 @@ int vl_map_shmem (char *region_name, int is_vlib)
if (is_vlib == 0)
svm_region_init_chroot(am->root_path);
- vec_validate (a, 0);
+ memset (a, 0, sizeof (*a));
a->name = region_name;
a->size = 16<<20;
a->flags = SVM_FLAGS_MHEAP;
+ a->uid = am->api_uid;
+ a->gid = am->api_gid;
vlib_rp = svm_region_find_or_create (a);
- vec_free (a);
-
if (vlib_rp == 0)
return (-2);
@@ -273,25 +287,8 @@ int vl_map_shmem (char *region_name, int is_vlib)
/* Clean up the root region client list */
pthread_mutex_lock (&root_rp->mutex);
svm_client_scan_this_region_nolock (root_rp);
- pthread_mutex_unlock (&root_rp->mutex);
- } else {
- pthread_mutex_unlock (&vlib_rp->mutex);
- /*
- * Make sure the vlib app is really there...
- * Wait up to 100 seconds...
- */
- for (i = 0; i < 10000; i++) {
- /* Yup, it's there, off we go... */
- if (kill (am->shmem_hdr->vl_pid, 0) >= 0)
- break;
-
- ts.tv_sec = 0;
- ts.tv_nsec = 10000*1000; /* 10 ms */
- while (nanosleep(&ts, &tsrem) < 0)
- ts = tsrem;
- }
- }
-
+ }
+ pthread_mutex_unlock (&vlib_rp->mutex);
am->vlib_rp = vlib_rp;
vec_add1(am->mapped_shmem_regions, vlib_rp);
return 0;