[LTP] [PATCH v3 2/8] Fallback PIDFD_GET_INFO related definitions

[Andrea Cervesato]

From: Andrea Cervesato <andrea.cervesato@suse.com>

Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 configure.ac         |  2 ++
 include/lapi/pidfd.h | 39 ++++++++++++++++++++++++++++++++++++++-
 2 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 69c5be7362a0e9f2fdaf3e6bd01f92f6f4880108..c830b40cbbb248e6f58040d9353e0da87b288732 100644
--- a/configure.ac
+++ b/configure.ac
@@ -259,6 +259,8 @@ AC_CHECK_TYPES([struct cachestat],,,[#include <sys/mman.h>])
 AC_CHECK_TYPES([struct mnt_id_req],,,[#include <sys/mount.h>])
 AC_CHECK_TYPES([struct statmount],,,[#include <sys/mount.h>])
 
+AC_CHECK_TYPES([struct pidfd_info],,,[#include <linux/pidfd.h>])
+
 # Tools knobs
 
 # Bash
diff --git a/include/lapi/pidfd.h b/include/lapi/pidfd.h
index 9ca8e5aa23626646ebb2f18880abd5e52298bfc6..a3205032cf7d702fd8a014456933f8495f5984e2 100644
--- a/include/lapi/pidfd.h
+++ b/include/lapi/pidfd.h
@@ -8,14 +8,51 @@
 #define LAPI_PIDFD_H__
 
 #include <fcntl.h>
+#include <stdint.h>
+#include <sys/ioctl.h>
+
 #ifdef HAVE_SYS_PIDFD_H
 # include <sys/pidfd.h>
 #endif
+
 #include "config.h"
 #include "lapi/syscalls.h"
 
+#ifndef HAVE_STRUCT_PIDFD_INFO
+struct pidfd_info {
+	uint64_t mask;
+	uint64_t cgroupid;
+	uint32_t pid;
+	uint32_t tgid;
+	uint32_t ppid;
+	uint32_t ruid;
+	uint32_t rgid;
+	uint32_t euid;
+	uint32_t egid;
+	uint32_t suid;
+	uint32_t sgid;
+	uint32_t fsuid;
+	uint32_t fsgid;
+	int32_t exit_code;
+	uint32_t coredump_mask;
+	uint32_t __spare1;
+};
+#endif
+
 #ifndef PIDFD_NONBLOCK
-#define PIDFD_NONBLOCK O_NONBLOCK
+# define PIDFD_NONBLOCK O_NONBLOCK
+#endif
+
+#ifndef PIDFS_IOCTL_MAGIC
+# define PIDFS_IOCTL_MAGIC	0xFF
+#endif
+
+#ifndef PIDFD_GET_INFO
+# define PIDFD_GET_INFO		_IOWR(PIDFS_IOCTL_MAGIC, 11, struct pidfd_info)
+#endif
+
+#ifndef PIDFD_INFO_EXIT
+# define PIDFD_INFO_EXIT	(1UL << 3)
 #endif
 
 static inline void pidfd_send_signal_supported(void)

-- 
2.50.0