sys: add statx syscall

The statx syscall was added in Linux 4.11, check out the kernel
documentation[1] for more information.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a528d35e8bfcc521d7cb70aaf03e1bd296c8493f

Signed-off-by: Jess Frazelle <acidburn@google.com>

4 files changed, 99 insertions, 0 deletions

diff --git a/sys/sys.txt b/sys/sys.txt
index 876ce0a3e..ce3c0b20e 100644
--- a/sys/sys.txt
+++ b/sys/sys.txt
@@ -97,6 +97,7 @@ vmsplice(fd fd, vec ptr[in, array[iovec_in]], vlen len[vec], f flags[splice_flag
 sendfile(fdout fd, fdin fd, off ptr[inout, fileoff[int64], opt], count int64)
 
 stat(file ptr[in, filename], statbuf ptr[out, stat])
+statx(dfd int64, file ptr[in, filename], flags flags[statx_flags], mask flags[statx_mask], statxbuf ptr[out, statx])
 lstat(file ptr[in, filename], statbuf ptr[out, stat])
 fstat(fd fd, statbuf ptr[out, stat])
 
@@ -543,6 +544,30 @@ stat {
 	pad2	int32
 }
 
+statx {
+	mask int32
+	blksize int32
+	attributes int64
+	nlink int32
+	uid int32
+	gid int32
+	mode int16
+	__spare0 int16
+	ino int64
+	size int64
+	blocks int64
+	__spare1 int64
+	atime statx_timestamp
+	btime statx_timestamp
+	ctime statx_timestamp
+	mtime statx_timestamp
+	rdev_major int32
+	rdev_minor int32
+	dev_major int32
+	dev_minor int32
+	__spare2 array[int64, 14]
+}
+
 pollfd {
 	fd	fd
 	events	flags[pollfd_events, int16]
@@ -564,6 +589,12 @@ timespec {
 	nsec	intptr
 }
 
+statx_timestamp {
+	sec  int64
+	nsec int32
+	__reserved  int32
+}
+
 # prog knowns about this struct type
 timeval {
 	sec	intptr
@@ -937,6 +968,8 @@ renameat2_flags = RENAME_EXCHANGE, RENAME_NOREPLACE, RENAME_WHITEOUT
 flock_op = LOCK_SH, LOCK_EX, LOCK_UN, LOCK_NB
 seccomp_op = SECCOMP_SET_MODE_STRICT, SECCOMP_SET_MODE_FILTER
 seccomp_flags = 0, SECCOMP_FILTER_FLAG_TSYNC
+statx_flags = STATX_ATTR_COMPRESSED, STATX_ATTR_IMMUTABLE, STATX_ATTR_APPEND, STATX_ATTR_NODUMP, STATX_ATTR_ENCRYPTED, KSTAT_ATTR_FS_IOC_FLAGS, STATX_ATTR_AUTOMOUNT
+statx_mask = STATX_TYPE, STATX_MODE, STATX_NLINK, STATX_UID, STATX_GID, STATX_ATIME, STATX_MTIME, STATX_CTIME, STATX_INO, STATX_SIZE, STATX_BLOCKS, STATX_BASIC_STATS, STATX_BTIME, STATX_ALL
 name_to_handle_at_flags = AT_EMPTY_PATH, AT_SYMLINK_FOLLOW
 mq_open_flags = O_RDONLY, O_WRONLY, O_RDWR, O_NONBLOCK, O_CREAT, O_EXCL, O_CREAT
 mount_flags = MS_BIND, MS_DIRSYNC, MS_MANDLOCK, MS_MOVE, MS_NOATIME, MS_NODEV, MS_NODIRATIME, MS_NOEXEC, MS_NOSUID, MS_RDONLY, MS_RELATIME, MS_REMOUNT, MS_SILENT, MS_STRICTATIME, MS_SYNCHRONOUS, MS_REC, MS_POSIXACL, MS_UNBINDABLE, MS_PRIVATE, MS_SLAVE, MS_SHARED, MS_I_VERSION, MS_LAZYTIME
diff --git a/sys/sys_amd64.const b/sys/sys_amd64.const
index 66dabf1e8..a2a623692 100644
--- a/sys/sys_amd64.const
+++ b/sys/sys_amd64.const
@@ -200,6 +200,7 @@ KEXEC_ARCH_SH = 2752512
 KEXEC_ARCH_X86_64 = 4063232
 KEXEC_ON_CRASH = 1
 KEXEC_PRESERVE_CONTEXT = 2
+KSTAT_ATTR_FS_IOC_FLAGS = 2164
 LOCK_EX = 2
 LOCK_NB = 4
 LOCK_SH = 1
@@ -522,6 +523,26 @@ SPLICE_F_GIFT = 8
 SPLICE_F_MORE = 4
 SPLICE_F_MOVE = 1
 SPLICE_F_NONBLOCK = 2
+STATX_ALL = 4095
+STATX_ATIME = 32
+STATX_ATTR_APPEND = 32
+STATX_ATTR_AUTOMOUNT = 4096
+STATX_ATTR_COMPRESSED = 4
+STATX_ATTR_ENCRYPTED = 2048
+STATX_ATTR_IMMUTABLE = 16
+STATX_ATTR_NODUMP = 64
+STATX_BASIC_STATS = 2047
+STATX_BLOCKS = 1024
+STATX_BTIME = 2048
+STATX_CTIME = 128
+STATX_GID = 16
+STATX_INO = 256
+STATX_MODE = 2
+STATX_MTIME = 64
+STATX_NLINK = 4
+STATX_SIZE = 512
+STATX_TYPE = 1
+STATX_UID = 8
 STICKY_TIMEOUTS = 67108864
 SYNC_FILE_RANGE_WAIT_AFTER = 4
 SYNC_FILE_RANGE_WAIT_BEFORE = 1
@@ -793,6 +814,7 @@ __NR_signalfd4 = 289
 __NR_splice = 275
 __NR_stat = 4
 __NR_statfs = 137
+__NR_statx = 332
 __NR_symlink = 88
 __NR_symlinkat = 266
 __NR_sync = 162
diff --git a/sys/sys_arm64.const b/sys/sys_arm64.const
index 8ad0f36bb..9c454a23a 100644
--- a/sys/sys_arm64.const
+++ b/sys/sys_arm64.const
@@ -200,6 +200,7 @@ KEXEC_ARCH_SH = 2752512
 KEXEC_ARCH_X86_64 = 4063232
 KEXEC_ON_CRASH = 1
 KEXEC_PRESERVE_CONTEXT = 2
+KSTAT_ATTR_FS_IOC_FLAGS = 2164
 LOCK_EX = 2
 LOCK_NB = 4
 LOCK_SH = 1
@@ -515,6 +516,26 @@ SPLICE_F_GIFT = 8
 SPLICE_F_MORE = 4
 SPLICE_F_MOVE = 1
 SPLICE_F_NONBLOCK = 2
+STATX_ALL = 4095
+STATX_ATIME = 32
+STATX_ATTR_APPEND = 32
+STATX_ATTR_AUTOMOUNT = 4096
+STATX_ATTR_COMPRESSED = 4
+STATX_ATTR_ENCRYPTED = 2048
+STATX_ATTR_IMMUTABLE = 16
+STATX_ATTR_NODUMP = 64
+STATX_BASIC_STATS = 2047
+STATX_BLOCKS = 1024
+STATX_BTIME = 2048
+STATX_CTIME = 128
+STATX_GID = 16
+STATX_INO = 256
+STATX_MODE = 2
+STATX_MTIME = 64
+STATX_NLINK = 4
+STATX_SIZE = 512
+STATX_TYPE = 1
+STATX_UID = 8
 STICKY_TIMEOUTS = 67108864
 SYNC_FILE_RANGE_WAIT_AFTER = 4
 SYNC_FILE_RANGE_WAIT_BEFORE = 1
@@ -752,6 +773,7 @@ __NR_sigaltstack = 132
 __NR_signalfd4 = 74
 __NR_splice = 76
 __NR_statfs = 43
+__NR_statx = 291
 __NR_symlinkat = 36
 __NR_sync = 81
 __NR_sync_file_range = 84
diff --git a/sys/sys_ppc64le.const b/sys/sys_ppc64le.const
index 4ea38474e..1982495ad 100644
--- a/sys/sys_ppc64le.const
+++ b/sys/sys_ppc64le.const
@@ -200,6 +200,7 @@ KEXEC_ARCH_SH = 2752512
 KEXEC_ARCH_X86_64 = 4063232
 KEXEC_ON_CRASH = 1
 KEXEC_PRESERVE_CONTEXT = 2
+KSTAT_ATTR_FS_IOC_FLAGS = 2164
 LOCK_EX = 2
 LOCK_NB = 4
 LOCK_SH = 1
@@ -519,6 +520,26 @@ SPLICE_F_GIFT = 8
 SPLICE_F_MORE = 4
 SPLICE_F_MOVE = 1
 SPLICE_F_NONBLOCK = 2
+STATX_ALL = 4095
+STATX_ATIME = 32
+STATX_ATTR_APPEND = 32
+STATX_ATTR_AUTOMOUNT = 4096
+STATX_ATTR_COMPRESSED = 4
+STATX_ATTR_ENCRYPTED = 2048
+STATX_ATTR_IMMUTABLE = 16
+STATX_ATTR_NODUMP = 64
+STATX_BASIC_STATS = 2047
+STATX_BLOCKS = 1024
+STATX_BTIME = 2048
+STATX_CTIME = 128
+STATX_GID = 16
+STATX_INO = 256
+STATX_MODE = 2
+STATX_MTIME = 64
+STATX_NLINK = 4
+STATX_SIZE = 512
+STATX_TYPE = 1
+STATX_UID = 8
 STICKY_TIMEOUTS = 67108864
 SYNC_FILE_RANGE_WAIT_AFTER = 4
 SYNC_FILE_RANGE_WAIT_BEFORE = 1
@@ -784,6 +805,7 @@ __NR_signalfd4 = 313
 __NR_splice = 283
 __NR_stat = 106
 __NR_statfs = 99
+__NR_statx = 383
 __NR_symlink = 83
 __NR_symlinkat = 295
 __NR_sync = 36