lib: Fix shm for evil devices

Cupertino's finest don't seem to support a write call with a
filedescriptor that points to a shared memory file. ENOTSUP is not
mentioned in their manpage either. Classic.

3 files changed, 6 insertions, 6 deletions

diff --git a/src/lib/lockfile.c b/src/lib/lockfile.c
index 81bed687..04ce9324 100644
--- a/src/lib/lockfile.c
+++ b/src/lib/lockfile.c
@@ -64,13 +64,13 @@ struct lockfile * lockfile_create() {
                 free(lf);
                 return NULL;
         }
-
+#ifndef __APPLE__
         if (write(lf->fd, "", 1) != 1) {
                 LOG_DBGF("Failed to finalise lockfile.");
                 free(lf);
                 return NULL;
         }
-
+#endif
         lf->api = mmap(NULL,
                        LF_SIZE, PROT_READ | PROT_WRITE,
                        MAP_SHARED,
diff --git a/src/lib/shm_ap_rbuff.c b/src/lib/shm_ap_rbuff.c
index 473894d5..d9e332fe 100644
--- a/src/lib/shm_ap_rbuff.c
+++ b/src/lib/shm_ap_rbuff.c
@@ -104,13 +104,13 @@ static struct shm_ap_rbuff * shm_ap_rbuff_create(bool dir)
                 free(rb);
                 return NULL;
         }
-
+#ifndef __APPLE__
         if (write(shm_fd, "", 1) != 1) {
                 LOG_DBG("Failed to finalise extension of ringbuffer.");
                 free(rb);
                 return NULL;
         }
-
+#endif
         shm_base = mmap(NULL,
                         SHM_RBUFF_FILE_SIZE,
                         PROT_READ | PROT_WRITE,
diff --git a/src/lib/shm_rdrbuff.c b/src/lib/shm_rdrbuff.c
index 7c4927fc..bf5c7f16 100644
--- a/src/lib/shm_rdrbuff.c
+++ b/src/lib/shm_rdrbuff.c
@@ -190,14 +190,14 @@ struct shm_rdrbuff * shm_rdrbuff_create()
                 free(rdrb);
                 return NULL;
         }
-
+#ifndef __APPLE
         if (write(shm_fd, "", 1) != 1) {
                 LOG_DBGF("Failed to finalise extension of shared memory map.");
                 free(shm_rdrb_fn);
                 free(rdrb);
                 return NULL;
         }
-
+#endif
         shm_base = mmap(NULL,
                         SHM_FILE_SIZE,
                         PROT_READ | PROT_WRITE,