mount: move mount utilities from syscall_wrappers.h into mount_utils.h

Signed-off-by: Christian Brauner (Microsoft) <christian.brauner@ubuntu.com>
lxc · Dec 16, 2022 · 460243f · 460243f
1 parent d5d7e20
commit 460243f
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Showing 3 changed files with 85 additions and 85 deletions.
diff --git a/src/lxc/conf.h b/src/lxc/conf.h
@@ -21,6 +21,7 @@
 #include "list.h"
 #include "lxcseccomp.h"
 #include "memory_utils.h"
+#include "mount_utils.h"
 #include "namespace.h"
 #include "ringbuf.h"
 #include "start.h"

diff --git a/src/lxc/mount_utils.h b/src/lxc/mount_utils.h
@@ -176,6 +176,90 @@ struct lxc_rootfs;
 #define MOUNT_ATTR_IDMAP 0x00100000
 #endif
 
+#if !HAVE_MOVE_MOUNT
+static inline int move_mount_lxc(int from_dfd, const char *from_pathname,
+				 int to_dfd, const char *to_pathname,
+				 unsigned int flags)
+{
+	return syscall(__NR_move_mount, from_dfd, from_pathname, to_dfd,
+		       to_pathname, flags);
+}
+#define move_mount move_mount_lxc
+#else
+extern int move_mount(int from_dfd, const char *from_pathname, int to_dfd,
+		      const char *to_pathname, unsigned int flags);
+#endif
+
+#if !HAVE_OPEN_TREE
+static inline int open_tree_lxc(int dfd, const char *filename, unsigned int flags)
+{
+	return syscall(__NR_open_tree, dfd, filename, flags);
+}
+#define open_tree open_tree_lxc
+#else
+extern int open_tree(int dfd, const char *filename, unsigned int flags);
+#endif
+
+#if !HAVE_FSOPEN
+static inline int fsopen_lxc(const char *fs_name, unsigned int flags)
+{
+	return syscall(__NR_fsopen, fs_name, flags);
+}
+#define fsopen fsopen_lxc
+#else
+extern int fsopen(const char *fs_name, unsigned int flags);
+#endif
+
+#if !HAVE_FSPICK
+static inline int fspick_lxc(int dfd, const char *path, unsigned int flags)
+{
+	return syscall(__NR_fspick, dfd, path, flags);
+}
+#define fspick fspick_lxc
+#else
+extern int fspick(int dfd, const char *path, unsigned int flags);
+#endif
+
+#if !HAVE_FSCONFIG
+static inline int fsconfig_lxc(int fd, unsigned int cmd, const char *key, const void *value, int aux)
+{
+	return syscall(__NR_fsconfig, fd, cmd, key, value, aux);
+}
+#define fsconfig fsconfig_lxc
+#else
+extern int fsconfig(int fd, unsigned int cmd, const char *key, const void *value, int aux);
+#endif
+
+#if !HAVE_FSMOUNT
+static inline int fsmount_lxc(int fs_fd, unsigned int flags, unsigned int attr_flags)
+{
+	return syscall(__NR_fsmount, fs_fd, flags, attr_flags);
+}
+#define fsmount fsmount_lxc
+#else
+extern int fsmount(int fs_fd, unsigned int flags, unsigned int attr_flags);
+#endif
+
+/*
+ * mount_setattr()
+ */
+#if !HAVE_STRUCT_MOUNT_ATTR
+struct mount_attr {
+	__u64 attr_set;
+	__u64 attr_clr;
+	__u64 propagation;
+	__u64 userns_fd;
+};
+#endif
+
+#if !HAVE_MOUNT_SETATTR
+static inline int mount_setattr(int dfd, const char *path, unsigned int flags,
+				struct mount_attr *attr, size_t size)
+{
+	return syscall(__NR_mount_setattr, dfd, path, flags, attr, size);
+}
+#endif
+
 __hidden extern int mnt_attributes_new(unsigned int old_flags, unsigned int *new_flags);
 
 __hidden extern int mnt_attributes_old(unsigned int new_flags, unsigned int *old_flags);

diff --git a/src/lxc/syscall_wrappers.h b/src/lxc/syscall_wrappers.h
@@ -10,7 +10,6 @@
 #include <linux/keyctl.h>
 #include <sched.h>
 #include <stdint.h>
-#include <sys/mount.h>
 #include <sys/prctl.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
@@ -144,90 +143,6 @@ static int faccessat(int __fd, const char *__file, int __type, int __flag)
 }
 #endif
 
-#if !HAVE_MOVE_MOUNT
-static inline int move_mount_lxc(int from_dfd, const char *from_pathname,
-				 int to_dfd, const char *to_pathname,
-				 unsigned int flags)
-{
-	return syscall(__NR_move_mount, from_dfd, from_pathname, to_dfd,
-		       to_pathname, flags);
-}
-#define move_mount move_mount_lxc
-#else
-extern int move_mount(int from_dfd, const char *from_pathname, int to_dfd,
-		      const char *to_pathname, unsigned int flags);
-#endif
-
-#if !HAVE_OPEN_TREE
-static inline int open_tree_lxc(int dfd, const char *filename, unsigned int flags)
-{
-	return syscall(__NR_open_tree, dfd, filename, flags);
-}
-#define open_tree open_tree_lxc
-#else
-extern int open_tree(int dfd, const char *filename, unsigned int flags);
-#endif
-
-#if !HAVE_FSOPEN
-static inline int fsopen_lxc(const char *fs_name, unsigned int flags)
-{
-	return syscall(__NR_fsopen, fs_name, flags);
-}
-#define fsopen fsopen_lxc
-#else
-extern int fsopen(const char *fs_name, unsigned int flags);
-#endif
-
-#if !HAVE_FSPICK
-static inline int fspick_lxc(int dfd, const char *path, unsigned int flags)
-{
-	return syscall(__NR_fspick, dfd, path, flags);
-}
-#define fspick fspick_lxc
-#else
-extern int fspick(int dfd, const char *path, unsigned int flags);
-#endif
-
-#if !HAVE_FSCONFIG
-static inline int fsconfig_lxc(int fd, unsigned int cmd, const char *key, const void *value, int aux)
-{
-	return syscall(__NR_fsconfig, fd, cmd, key, value, aux);
-}
-#define fsconfig fsconfig_lxc
-#else
-extern int fsconfig(int fd, unsigned int cmd, const char *key, const void *value, int aux);
-#endif
-
-#if !HAVE_FSMOUNT
-static inline int fsmount_lxc(int fs_fd, unsigned int flags, unsigned int attr_flags)
-{
-	return syscall(__NR_fsmount, fs_fd, flags, attr_flags);
-}
-#define fsmount fsmount_lxc
-#else
-extern int fsmount(int fs_fd, unsigned int flags, unsigned int attr_flags);
-#endif
-
-/*
- * mount_setattr()
- */
-#if !HAVE_STRUCT_MOUNT_ATTR
-struct mount_attr {
-	__u64 attr_set;
-	__u64 attr_clr;
-	__u64 propagation;
-	__u64 userns_fd;
-};
-#endif
-
-#if !HAVE_MOUNT_SETATTR
-static inline int mount_setattr(int dfd, const char *path, unsigned int flags,
-				struct mount_attr *attr, size_t size)
-{
-	return syscall(__NR_mount_setattr, dfd, path, flags, attr, size);
-}
-#endif
-
 /*
  * Arguments for how openat2(2) should open the target path. If only @flags and
  * @mode are non-zero, then openat2(2) operates very similarly to openat(2).