missing: Fix compilation error due to wrong __NR_name_to_handle_at definition

[elogind.git] / src / shared / missing.h

diff --git a/src/shared/missing.h b/src/shared/missing.h
index df3fd0e839d59ef47882041e638bce112f7809f1..14abe4ee2eacf95223f4d470c28130af0e200de3 100644 (file)
--- a/src/shared/missing.h
+++ b/src/shared/missing.h
@@ -26,6 +26,7 @@
 #include <sys/resource.h>
 #include <sys/syscall.h>
 #include <fcntl.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <linux/oom.h>
 
@@ -83,9 +84,11 @@
 #define IP_TRANSPARENT 19
 #endif
 
+#if !HAVE_DECL_PIVOT_ROOT
 static inline int pivot_root(const char *new_root, const char *put_old) {
         return syscall(SYS_pivot_root, new_root, put_old);
 }
+#endif
 
 #ifdef __x86_64__
 #  ifndef __NR_fanotify_init
@@ -126,10 +129,13 @@ static inline int pivot_root(const char *new_root, const char *put_old) {
 #  endif
 #endif
 
+#ifndef HAVE_FANOTIFY_INIT
 static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
         return syscall(__NR_fanotify_init, flags, event_f_flags);
 }
+#endif
 
+#ifndef HAVE_FANOTIFY_MARK
 static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
                                 int dfd, const char *pathname) {
 #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__
@@ -145,6 +151,7 @@ static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t ma
         return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
 #endif
 }
+#endif
 
 #ifndef BTRFS_IOCTL_MAGIC
 #define BTRFS_IOCTL_MAGIC 0x94
@@ -175,9 +182,11 @@ struct btrfs_ioctl_vol_args {
 #define MS_PRIVATE  (1 << 18)
 #endif
 
+#if !HAVE_DECL_GETTID
 static inline pid_t gettid(void) {
         return (pid_t) syscall(SYS_gettid);
 }
+#endif
 
 #ifndef SCM_SECURITY
 #define SCM_SECURITY 0x03
@@ -194,3 +203,37 @@ static inline pid_t gettid(void) {
 #ifndef PR_SET_CHILD_SUBREAPER
 #define PR_SET_CHILD_SUBREAPER 36
 #endif
+
+#ifndef MAX_HANDLE_SZ
+#define MAX_HANDLE_SZ 128
+#endif
+
+#ifdef __x86_64__
+#  ifndef __NR_name_to_handle_at
+#    define __NR_name_to_handle_at 303
+#  endif
+#else
+#  ifndef __NR_name_to_handle_at
+#    define __NR_name_to_handle_at 341
+#  endif
+#endif
+
+#ifndef HAVE_NAME_TO_HANDLE_AT
+struct file_handle {
+        unsigned int handle_bytes;
+        int handle_type;
+        unsigned char f_handle[0];
+};
+
+static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
+        return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
+}
+#endif
+
+#ifndef HAVE_SECURE_GETENV
+#  ifdef HAVE___SECURE_GETENV
+#    define secure_getenv __secure_getenv
+#  else
+#    error neither secure_getenv nor __secure_getenv are available
+#  endif
+#endif