diff --git a/sys/linux/sys.txt b/sys/linux/sys.txt
index 0589dc23..a1446df1 100644
--- a/sys/linux/sys.txt
+++ b/sys/linux/sys.txt
@@ -89,12 +89,16 @@ read(fd fd, buf buffer[out], count len[buf])
 pread64(fd fd, buf buffer[out], count len[buf], pos fileoff)
 readv(fd fd, vec ptr[in, array[iovec_out]], vlen len[vec])
 preadv(fd fd, vec ptr[in, array[iovec_out]], vlen len[vec], off fileoff)
+preadv2(fd fd, vec ptr[in, array[iovec_out]], vlen len[vec], off fileoff, flags flags[rwf_flags])
 write(fd fd, buf buffer[in], count len[buf])
 pwrite64(fd fd, buf buffer[in], count len[buf], pos fileoff)
 writev(fd fd, vec ptr[in, array[iovec_in]], vlen len[vec])
 pwritev(fd fd, vec ptr[in, array[iovec_in]], vlen len[vec], off fileoff)
+pwritev2(fd fd, vec ptr[in, array[iovec_in]], vlen len[vec], off fileoff, flags flags[rwf_flags])
 lseek(fd fd, offset fileoff, whence flags[seek_whence])
 
+rwf_flags = RWF_DSYNC, RWF_HIPRI, RWF_SYNC, RWF_NOWAIT, RWF_APPEND
+
 dup(oldfd fd) fd
 dup2(oldfd fd, newfd fd) fd
 dup3(oldfd fd, newfd fd, flags flags[dup_flags]) fd
diff --git a/sys/linux/sys_386.const b/sys/linux/sys_386.const
index d06e7811..ddb64ebf 100644
--- a/sys/linux/sys_386.const
+++ b/sys/linux/sys_386.const
@@ -459,6 +459,11 @@ RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = 2
 RUSAGE_CHILDREN = 18446744073709551615
 RUSAGE_SELF = 0
 RUSAGE_THREAD = 1
+RWF_APPEND = 16
+RWF_DSYNC = 2
+RWF_HIPRI = 1
+RWF_NOWAIT = 8
+RWF_SYNC = 4
 RWF_WRITE_LIFE_NOT_SET = 0
 RWH_WRITE_LIFE_EXTREME = 5
 RWH_WRITE_LIFE_LONG = 4
@@ -724,6 +729,7 @@ __NR_poll = 168
 __NR_ppoll = 309
 __NR_pread64 = 180
 __NR_preadv = 333
+__NR_preadv2 = 378
 __NR_prlimit64 = 340
 __NR_process_madvise = 443
 __NR_process_vm_readv = 347
@@ -732,6 +738,7 @@ __NR_pselect6 = 308
 __NR_ptrace = 26
 __NR_pwrite64 = 181
 __NR_pwritev = 334
+__NR_pwritev2 = 379
 __NR_quotactl = 131
 __NR_read = 3
 __NR_readahead = 225
diff --git a/sys/linux/sys_amd64.const b/sys/linux/sys_amd64.const
index 8dcbcb1d..ec1d8f7f 100644
--- a/sys/linux/sys_amd64.const
+++ b/sys/linux/sys_amd64.const
@@ -459,6 +459,11 @@ RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = 2
 RUSAGE_CHILDREN = 18446744073709551615
 RUSAGE_SELF = 0
 RUSAGE_THREAD = 1
+RWF_APPEND = 16
+RWF_DSYNC = 2
+RWF_HIPRI = 1
+RWF_NOWAIT = 8
+RWF_SYNC = 4
 RWF_WRITE_LIFE_NOT_SET = 0
 RWH_WRITE_LIFE_EXTREME = 5
 RWH_WRITE_LIFE_LONG = 4
@@ -724,6 +729,7 @@ __NR_poll = 7
 __NR_ppoll = 271
 __NR_pread64 = 17
 __NR_preadv = 295
+__NR_preadv2 = 327
 __NR_prlimit64 = 302
 __NR_process_madvise = 443
 __NR_process_vm_readv = 310
@@ -732,6 +738,7 @@ __NR_pselect6 = 270
 __NR_ptrace = 101
 __NR_pwrite64 = 18
 __NR_pwritev = 296
+__NR_pwritev2 = 328
 __NR_quotactl = 179
 __NR_read = 0
 __NR_readahead = 187
diff --git a/sys/linux/sys_arm.const b/sys/linux/sys_arm.const
index 255b09c6..20644bea 100644
--- a/sys/linux/sys_arm.const
+++ b/sys/linux/sys_arm.const
@@ -459,6 +459,11 @@ RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = 2
 RUSAGE_CHILDREN = 18446744073709551615
 RUSAGE_SELF = 0
 RUSAGE_THREAD = 1
+RWF_APPEND = 16
+RWF_DSYNC = 2
+RWF_HIPRI = 1
+RWF_NOWAIT = 8
+RWF_SYNC = 4
 RWF_WRITE_LIFE_NOT_SET = 0
 RWH_WRITE_LIFE_EXTREME = 5
 RWH_WRITE_LIFE_LONG = 4
@@ -724,6 +729,7 @@ __NR_poll = 168
 __NR_ppoll = 336
 __NR_pread64 = 180
 __NR_preadv = 361
+__NR_preadv2 = 392
 __NR_prlimit64 = 369
 __NR_process_madvise = 443
 __NR_process_vm_readv = 376
@@ -732,6 +738,7 @@ __NR_pselect6 = 335
 __NR_ptrace = 26
 __NR_pwrite64 = 181
 __NR_pwritev = 362
+__NR_pwritev2 = 393
 __NR_quotactl = 131
 __NR_read = 3
 __NR_readahead = 225
diff --git a/sys/linux/sys_arm64.const b/sys/linux/sys_arm64.const
index 6d6ca220..95fcd5ba 100644
--- a/sys/linux/sys_arm64.const
+++ b/sys/linux/sys_arm64.const
@@ -459,6 +459,11 @@ RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = 2
 RUSAGE_CHILDREN = 18446744073709551615
 RUSAGE_SELF = 0
 RUSAGE_THREAD = 1
+RWF_APPEND = 16
+RWF_DSYNC = 2
+RWF_HIPRI = 1
+RWF_NOWAIT = 8
+RWF_SYNC = 4
 RWF_WRITE_LIFE_NOT_SET = 0
 RWH_WRITE_LIFE_EXTREME = 5
 RWH_WRITE_LIFE_LONG = 4
@@ -724,6 +729,7 @@ __NR_pkey_mprotect = 288
 __NR_ppoll = 73
 __NR_pread64 = 67
 __NR_preadv = 69
+__NR_preadv2 = 286
 __NR_prlimit64 = 261
 __NR_process_madvise = 443
 __NR_process_vm_readv = 270
@@ -732,6 +738,7 @@ __NR_pselect6 = 72
 __NR_ptrace = 117
 __NR_pwrite64 = 68
 __NR_pwritev = 70
+__NR_pwritev2 = 287
 __NR_quotactl = 60
 __NR_read = 63
 __NR_readahead = 213
diff --git a/sys/linux/sys_mips64le.const b/sys/linux/sys_mips64le.const
index a9c01db8..ab0afef8 100644
--- a/sys/linux/sys_mips64le.const
+++ b/sys/linux/sys_mips64le.const
@@ -459,6 +459,11 @@ RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = 2
 RUSAGE_CHILDREN = 18446744073709551615
 RUSAGE_SELF = 0
 RUSAGE_THREAD = 1
+RWF_APPEND = 16
+RWF_DSYNC = 2
+RWF_HIPRI = 1
+RWF_NOWAIT = 8
+RWF_SYNC = 4
 RWF_WRITE_LIFE_NOT_SET = 0
 RWH_WRITE_LIFE_EXTREME = 5
 RWH_WRITE_LIFE_LONG = 4
@@ -724,6 +729,7 @@ __NR_poll = 5007
 __NR_ppoll = 5261
 __NR_pread64 = 5016
 __NR_preadv = 5289
+__NR_preadv2 = 5321
 __NR_prlimit64 = 5297
 __NR_process_madvise = 5443
 __NR_process_vm_readv = 5304
@@ -732,6 +738,7 @@ __NR_pselect6 = 5260
 __NR_ptrace = 5099
 __NR_pwrite64 = 5017
 __NR_pwritev = 5290
+__NR_pwritev2 = 5322
 __NR_quotactl = 5172
 __NR_read = 5000
 __NR_readahead = 5179
diff --git a/sys/linux/sys_ppc64le.const b/sys/linux/sys_ppc64le.const
index e43cfe38..7da3b667 100644
--- a/sys/linux/sys_ppc64le.const
+++ b/sys/linux/sys_ppc64le.const
@@ -459,6 +459,11 @@ RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = 2
 RUSAGE_CHILDREN = 18446744073709551615
 RUSAGE_SELF = 0
 RUSAGE_THREAD = 1
+RWF_APPEND = 16
+RWF_DSYNC = 2
+RWF_HIPRI = 1
+RWF_NOWAIT = 8
+RWF_SYNC = 4
 RWF_WRITE_LIFE_NOT_SET = 0
 RWH_WRITE_LIFE_EXTREME = 5
 RWH_WRITE_LIFE_LONG = 4
@@ -724,6 +729,7 @@ __NR_poll = 167
 __NR_ppoll = 281
 __NR_pread64 = 179
 __NR_preadv = 320
+__NR_preadv2 = 380
 __NR_prlimit64 = 325
 __NR_process_madvise = 443
 __NR_process_vm_readv = 351
@@ -732,6 +738,7 @@ __NR_pselect6 = 280
 __NR_ptrace = 26
 __NR_pwrite64 = 180
 __NR_pwritev = 321
+__NR_pwritev2 = 381
 __NR_quotactl = 131
 __NR_read = 3
 __NR_readahead = 191
diff --git a/sys/linux/sys_riscv64.const b/sys/linux/sys_riscv64.const
index 0c758c9b..2eb0ae33 100644
--- a/sys/linux/sys_riscv64.const
+++ b/sys/linux/sys_riscv64.const
@@ -459,6 +459,11 @@ RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = 2
 RUSAGE_CHILDREN = 18446744073709551615
 RUSAGE_SELF = 0
 RUSAGE_THREAD = 1
+RWF_APPEND = 16
+RWF_DSYNC = 2
+RWF_HIPRI = 1
+RWF_NOWAIT = 8
+RWF_SYNC = 4
 RWF_WRITE_LIFE_NOT_SET = 0
 RWH_WRITE_LIFE_EXTREME = 5
 RWH_WRITE_LIFE_LONG = 4
@@ -724,6 +729,7 @@ __NR_pkey_mprotect = 288
 __NR_ppoll = 73
 __NR_pread64 = 67
 __NR_preadv = 69
+__NR_preadv2 = 286
 __NR_prlimit64 = 261
 __NR_process_madvise = 443
 __NR_process_vm_readv = 270
@@ -732,6 +738,7 @@ __NR_pselect6 = 72
 __NR_ptrace = 117
 __NR_pwrite64 = 68
 __NR_pwritev = 70
+__NR_pwritev2 = 287
 __NR_quotactl = 60
 __NR_read = 63
 __NR_readahead = 213
diff --git a/sys/linux/sys_s390x.const b/sys/linux/sys_s390x.const
index 42a11116..d743ee3e 100644
--- a/sys/linux/sys_s390x.const
+++ b/sys/linux/sys_s390x.const
@@ -459,6 +459,11 @@ RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL = 2
 RUSAGE_CHILDREN = 18446744073709551615
 RUSAGE_SELF = 0
 RUSAGE_THREAD = 1
+RWF_APPEND = 16
+RWF_DSYNC = 2
+RWF_HIPRI = 1
+RWF_NOWAIT = 8
+RWF_SYNC = 4
 RWF_WRITE_LIFE_NOT_SET = 0
 RWH_WRITE_LIFE_EXTREME = 5
 RWH_WRITE_LIFE_LONG = 4
@@ -724,6 +729,7 @@ __NR_poll = 168
 __NR_ppoll = 302
 __NR_pread64 = 180
 __NR_preadv = 328
+__NR_preadv2 = 376
 __NR_prlimit64 = 334
 __NR_process_madvise = 443
 __NR_process_vm_readv = 340
@@ -732,6 +738,7 @@ __NR_pselect6 = 301
 __NR_ptrace = 26
 __NR_pwrite64 = 181
 __NR_pwritev = 329
+__NR_pwritev2 = 377
 __NR_quotactl = 131
 __NR_read = 3
 __NR_readahead = 222