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block/iscsi: Restrict Linux-specific code 

Some Linux specific code is missing guards, leading to
build failure on OSX:

  $ sudo brew install libiscsi
  $ ./configure && make
  [...]
    CC      block/iscsi.o
  qemu/block/iscsi.c:338:24: error: 'iscsi_aiocb_info' defined but not used [-Werror=unused-const-variable=]
   static const AIOCBInfo iscsi_aiocb_info = {
                          ^~~~~~~~~~~~~~~~
  qemu/block/iscsi.c:168:1: error: 'iscsi_schedule_bh' defined but not used [-Werror=unused-function]
   iscsi_schedule_bh(IscsiAIOCB *acb)
   ^~~~~~~~~~~~~~~~~
  cc1: all warnings being treated as errors

Add guards to restrict this code for Linux.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190220000553.28438-1-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2019-02-20 01:05:53 +01:00 committed by Paolo Bonzini
parent 5dc8ab361a
commit d4cef0c67c
1 changed files with 7 additions and 0 deletions
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7
block/iscsi.c
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@ -145,6 +145,8 @@ static const unsigned iscsi_retry_times[] = {8, 32, 128, 512, 2048, 8192, 32768}
* unallocated. */
#define ISCSI_CHECKALLOC_THRES 64
#ifdef __linux__
static void
iscsi_bh_cb(void *p)
{
@ -172,6 +174,8 @@ iscsi_schedule_bh(IscsiAIOCB *acb)
qemu_bh_schedule(acb->bh);
}
#endif
static void iscsi_co_generic_bh_cb(void *opaque)
{
struct IscsiTask *iTask = opaque;
@ -290,6 +294,8 @@ static void iscsi_co_init_iscsitask(IscsiLun *iscsilun, struct IscsiTask *iTask)
};
}
#ifdef __linux__
/* Called (via iscsi_service) with QemuMutex held. */
static void
iscsi_abort_task_cb(struct iscsi_context *iscsi, int status, void *command_data,
@ -338,6 +344,7 @@ static const AIOCBInfo iscsi_aiocb_info = {
.cancel_async = iscsi_aio_cancel,
};
#endif
static void iscsi_process_read(void *arg);
static void iscsi_process_write(void *arg);