raw_syscalls: add lxc_raw_getpid()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

src/lxc/Makefile.am

@@ -342,13 +342,16 @@ if ENABLE_COMMANDS
 # Binaries shipping with liblxc
 init_lxc_SOURCES = cmd/lxc_init.c \
 		   initutils.c initutils.h \
+		   raw_syscalls.c raw_syscalls.h \
 		   string_utils.c string_utils.h
-lxc_monitord_SOURCES = cmd/lxc_monitord.c
+lxc_monitord_SOURCES = cmd/lxc_monitord.c \
+		       raw_syscalls.c raw_syscalls.h
 lxc_user_nic_SOURCES = cmd/lxc_user_nic.c \
 		       ../include/netns_ifaddrs.c ../include/netns_ifaddrs.h \
 		       log.c log.h \
 		       namespace.c namespace.h \
 		       network.c network.h \
+		       raw_syscalls.c raw_syscalls.h \
 		       parse.c parse.h
 lxc_usernsexec_SOURCES = cmd/lxc_usernsexec.c \
 			 conf.c conf.h \

src/lxc/af_unix.c

@@ -37,6 +37,7 @@
 
 #include "config.h"
 #include "log.h"
+#include "raw_syscalls.h"
 #include "utils.h"
 
 #ifndef HAVE_STRLCPY

src/lxc/cmd/lxc_init.c

@@ -46,8 +46,8 @@
 #include "error.h"
 #include "initutils.h"
 #include "log.h"
-#include "namespace.h"
 #include "parse.h"
+#include "raw_syscalls.h"
 #include "string_utils.h"
 
 /* option keys for long only options */

src/lxc/cmd/lxc_monitord.c

@@ -49,6 +49,7 @@
 #include "log.h"
 #include "mainloop.h"
 #include "monitor.h"
+#include "raw_syscalls.h"
 #include "utils.h"
 
 #define CLIENTFDS_CHUNK 64

src/lxc/lsm/apparmor.c

@@ -37,6 +37,7 @@
 #include "log.h"
 #include "lsm.h"
 #include "parse.h"
+#include "raw_syscalls.h"
 #include "utils.h"
 
 lxc_log_define(apparmor, lsm);

src/lxc/lxccontainer.c

@@ -65,6 +65,7 @@
 #include "namespace.h"
 #include "network.h"
 #include "parse.h"
+#include "raw_syscalls.h"
 #include "start.h"
 #include "state.h"
 #include "storage.h"

src/lxc/namespace.h

@@ -140,13 +140,4 @@ extern int lxc_namespace_2_ns_idx(const char *namespace);
 extern int lxc_namespace_2_std_identifiers(char *namespaces);
 extern int lxc_fill_namespace_flags(char *flaglist, int *flags);
 
-/**
- * Because of older glibc's pid cache (up to 2.25) whenever clone() is called
- * the child must must retrieve it's own pid via lxc_raw_getpid().
- */
-static inline pid_t lxc_raw_getpid(void)
-{
-	return (pid_t) syscall(SYS_getpid);
-}
-
 #endif

src/lxc/network.c

@@ -56,6 +56,7 @@
 #include "macro.h"
 #include "network.h"
 #include "nl.h"
+#include "raw_syscalls.h"
 #include "utils.h"
 
 #ifndef HAVE_STRLCPY

src/lxc/raw_syscalls.h

@@ -27,6 +27,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/syscall.h>
+#include <unistd.h>
 
 /*
  * lxc_raw_clone() - create a new process
@@ -73,4 +74,13 @@ extern pid_t lxc_raw_clone_cb(int (*fn)(void *), void *args, unsigned long flags
 extern int lxc_raw_execveat(int dirfd, const char *pathname, char *const argv[],
 			    char *const envp[], int flags);
 
+/*
+ * Because of older glibc's pid cache (up to 2.25) whenever clone() is called
+ * the child must must retrieve it's own pid via lxc_raw_getpid().
+ */
+static inline pid_t lxc_raw_getpid(void)
+{
+	return (pid_t)syscall(SYS_getpid);
+}
+
 #endif /* __LXC_RAW_SYSCALL_H */

src/lxc/utils.h

@@ -40,6 +40,7 @@
 #include "file_utils.h"
 #include "initutils.h"
 #include "macro.h"
+#include "raw_syscalls.h"
 #include "string_utils.h"
 
 #ifdef HAVE_LINUX_MEMFD_H