os-posix: Add os_set_daemonize()
The daemonizing functions in os-posix (os_daemonize() and
os_setup_post()) only daemonize the process if the static `daemonize`
variable is set. Right now, it can only be set by os_parse_cmd_args().
In order to use os_daemonize() and os_setup_post() from the storage
daemon to have it be daemonized, we need some other way to set this
`daemonize` variable, because I would rather not tap into the system
emulator's arg-parsing code. Therefore, this patch adds an
os_set_daemonize() function, which will return an error on os-win32
(because daemonizing is not supported there).
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220303164814.284974-2-hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/include/sysemu/os-posix.h b/include/sysemu/os-posix.h
index 2edf336..dd64fb4 100644
--- a/include/sysemu/os-posix.h
+++ b/include/sysemu/os-posix.h
@@ -55,6 +55,7 @@
typedef struct timeval qemu_timeval;
#define qemu_gettimeofday(tp) gettimeofday(tp, NULL)
+int os_set_daemonize(bool d);
bool is_daemonized(void);
/**
diff --git a/include/sysemu/os-win32.h b/include/sysemu/os-win32.h
index 43f569b..7707522 100644
--- a/include/sysemu/os-win32.h
+++ b/include/sysemu/os-win32.h
@@ -77,6 +77,14 @@
} qemu_timeval;
int qemu_gettimeofday(qemu_timeval *tp);
+static inline int os_set_daemonize(bool d)
+{
+ if (d) {
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
static inline bool is_daemonized(void)
{
return false;
diff --git a/os-posix.c b/os-posix.c
index ae6c9f2..24692c8 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -317,6 +317,12 @@
return daemonize;
}
+int os_set_daemonize(bool d)
+{
+ daemonize = d;
+ return 0;
+}
+
int os_mlock(void)
{
#ifdef HAVE_MLOCKALL
