tools/include: Sync uapi/linux/fs.h with the kernel sources

To pick up the changes from:

  41bcbe59c3b3f ("fs: FS_IOC_GETUUID")
  ae8c511757304 ("fs: add FS_IOC_GETFSSYSFSPATH")
  73fa7547c70b3 ("vfs: add RWF_NOAPPEND flag for pwritev2")

This should be used to beautify fs syscall arguments and it addresses
these tools/perf build warnings:

  Warning: Kernel ABI header differences:
    diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h

Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240408185520.1550865-3-namhyung@kernel.org

diff --git a/tools/include/uapi/linux/fs.h b/tools/include/uapi/linux/fs.h
index 48ad69f7722e1ae51ae5871a06482b6aa45dfc18..45e4e64fd6643ce3a83711cb295c711dd67ca511 100644 (file)
--- a/tools/include/uapi/linux/fs.h
+++ b/tools/include/uapi/linux/fs.h
@@ -64,6 +64,24 @@ struct fstrim_range {
        __u64 minlen;
 };
 
+/*
+ * We include a length field because some filesystems (vfat) have an identifier
+ * that we do want to expose as a UUID, but doesn't have the standard length.
+ *
+ * We use a fixed size buffer beacuse this interface will, by fiat, never
+ * support "UUIDs" longer than 16 bytes; we don't want to force all downstream
+ * users to have to deal with that.
+ */
+struct fsuuid2 {
+       __u8    len;
+       __u8    uuid[16];
+};
+
+struct fs_sysfs_path {
+       __u8                    len;
+       __u8                    name[128];
+};
+
 /* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */
 #define FILE_DEDUPE_RANGE_SAME         0
 #define FILE_DEDUPE_RANGE_DIFFERS      1
@@ -215,6 +233,13 @@ struct fsxattr {
 #define FS_IOC_FSSETXATTR              _IOW('X', 32, struct fsxattr)
 #define FS_IOC_GETFSLABEL              _IOR(0x94, 49, char[FSLABEL_MAX])
 #define FS_IOC_SETFSLABEL              _IOW(0x94, 50, char[FSLABEL_MAX])
+/* Returns the external filesystem UUID, the same one blkid returns */
+#define FS_IOC_GETFSUUID               _IOR(0x15, 0, struct fsuuid2)
+/*
+ * Returns the path component under /sys/fs/ that refers to this filesystem;
+ * also /sys/kernel/debug/ for filesystems with debugfs exports
+ */
+#define FS_IOC_GETFSSYSFSPATH          _IOR(0x15, 1, struct fs_sysfs_path)
 
 /*
  * Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS)
@@ -301,9 +326,12 @@ typedef int __bitwise __kernel_rwf_t;
 /* per-IO O_APPEND */
 #define RWF_APPEND     ((__force __kernel_rwf_t)0x00000010)
 
+/* per-IO negation of O_APPEND */
+#define RWF_NOAPPEND   ((__force __kernel_rwf_t)0x00000020)
+
 /* mask of flags supported by the kernel */
 #define RWF_SUPPORTED  (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT |\
-                        RWF_APPEND)
+                        RWF_APPEND | RWF_NOAPPEND)
 
 /* Pagemap ioctl */
 #define PAGEMAP_SCAN   _IOWR('f', 16, struct pm_scan_arg)