diff --git a/libc/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index 6a21b04..423a24e 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -227,6 +227,10 @@
 int sched_get_priority_min(int policy)  160
 int sched_rr_get_interval(pid_t pid, struct timespec *interval)  161
 
+# io priorities
+int ioprio_set(int which, int who, int ioprio) 314,289
+int ioprio_get(int which, int who) 315,290
+
 # other
 int     uname(struct utsname *)  122
 pid_t   __wait4:wait4(pid_t pid, int *status, int options, struct rusage *rusage)   114
diff --git a/libc/arch-arm/syscalls.mk b/libc/arch-arm/syscalls.mk
index 5f416e8..96471bf 100644
--- a/libc/arch-arm/syscalls.mk
+++ b/libc/arch-arm/syscalls.mk
@@ -150,6 +150,8 @@
 syscall_src += arch-arm/syscalls/sched_get_priority_max.S
 syscall_src += arch-arm/syscalls/sched_get_priority_min.S
 syscall_src += arch-arm/syscalls/sched_rr_get_interval.S
+syscall_src += arch-arm/syscalls/ioprio_set.S
+syscall_src += arch-arm/syscalls/ioprio_get.S
 syscall_src += arch-arm/syscalls/uname.S
 syscall_src += arch-arm/syscalls/__wait4.S
 syscall_src += arch-arm/syscalls/umask.S
diff --git a/libc/arch-arm/syscalls/ioprio_get.S b/libc/arch-arm/syscalls/ioprio_get.S
new file mode 100644
index 0000000..d686e98
--- /dev/null
+++ b/libc/arch-arm/syscalls/ioprio_get.S
@@ -0,0 +1,19 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type ioprio_get, #function
+    .globl ioprio_get
+    .align 4
+    .fnstart
+
+ioprio_get:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_ioprio_get
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend
diff --git a/libc/arch-arm/syscalls/ioprio_set.S b/libc/arch-arm/syscalls/ioprio_set.S
new file mode 100644
index 0000000..a812557
--- /dev/null
+++ b/libc/arch-arm/syscalls/ioprio_set.S
@@ -0,0 +1,19 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type ioprio_set, #function
+    .globl ioprio_set
+    .align 4
+    .fnstart
+
+ioprio_set:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_ioprio_set
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend
diff --git a/libc/arch-sh/syscalls.mk b/libc/arch-sh/syscalls.mk
index d3e531e..ac12ae4 100644
--- a/libc/arch-sh/syscalls.mk
+++ b/libc/arch-sh/syscalls.mk
@@ -139,6 +139,8 @@
 syscall_src += arch-sh/syscalls/sched_get_priority_max.S
 syscall_src += arch-sh/syscalls/sched_get_priority_min.S
 syscall_src += arch-sh/syscalls/sched_rr_get_interval.S
+syscall_src += arch-sh/syscalls/ioprio_set.S
+syscall_src += arch-sh/syscalls/ioprio_get.S
 syscall_src += arch-sh/syscalls/uname.S
 syscall_src += arch-sh/syscalls/__wait4.S
 syscall_src += arch-sh/syscalls/umask.S
diff --git a/libc/arch-sh/syscalls/ioprio_get.S b/libc/arch-sh/syscalls/ioprio_get.S
new file mode 100644
index 0000000..802eb91
--- /dev/null
+++ b/libc/arch-sh/syscalls/ioprio_get.S
@@ -0,0 +1,32 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type ioprio_get, @function
+    .globl ioprio_get
+    .align 4
+
+ioprio_get:
+
+    /* invoke trap */
+    mov.l   0f, r3  /* trap num */
+    trapa   #(2 + 0x10)
+
+    /* check return value */
+    cmp/pz  r0
+    bt      __NR_ioprio_get_end
+
+    /* keep error number */
+    sts.l   pr, @-r15
+    mov.l   1f, r1
+    jsr     @r1
+    mov     r0, r4
+    lds.l   @r15+, pr
+
+__NR_ioprio_get_end:
+    rts
+    nop
+
+    .align  2
+0:  .long   __NR_ioprio_get
+1:  .long   __set_syscall_errno
diff --git a/libc/arch-sh/syscalls/ioprio_set.S b/libc/arch-sh/syscalls/ioprio_set.S
new file mode 100644
index 0000000..209d756
--- /dev/null
+++ b/libc/arch-sh/syscalls/ioprio_set.S
@@ -0,0 +1,32 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type ioprio_set, @function
+    .globl ioprio_set
+    .align 4
+
+ioprio_set:
+
+    /* invoke trap */
+    mov.l   0f, r3  /* trap num */
+    trapa   #(3 + 0x10)
+
+    /* check return value */
+    cmp/pz  r0
+    bt      __NR_ioprio_set_end
+
+    /* keep error number */
+    sts.l   pr, @-r15
+    mov.l   1f, r1
+    jsr     @r1
+    mov     r0, r4
+    lds.l   @r15+, pr
+
+__NR_ioprio_set_end:
+    rts
+    nop
+
+    .align  2
+0:  .long   __NR_ioprio_set
+1:  .long   __set_syscall_errno
diff --git a/libc/arch-x86/syscalls.mk b/libc/arch-x86/syscalls.mk
index e718e18..dbc55e6 100644
--- a/libc/arch-x86/syscalls.mk
+++ b/libc/arch-x86/syscalls.mk
@@ -153,6 +153,8 @@
 syscall_src += arch-x86/syscalls/sched_get_priority_max.S
 syscall_src += arch-x86/syscalls/sched_get_priority_min.S
 syscall_src += arch-x86/syscalls/sched_rr_get_interval.S
+syscall_src += arch-x86/syscalls/ioprio_set.S
+syscall_src += arch-x86/syscalls/ioprio_get.S
 syscall_src += arch-x86/syscalls/uname.S
 syscall_src += arch-x86/syscalls/__wait4.S
 syscall_src += arch-x86/syscalls/umask.S
diff --git a/libc/arch-x86/syscalls/ioprio_get.S b/libc/arch-x86/syscalls/ioprio_get.S
new file mode 100644
index 0000000..3620271
--- /dev/null
+++ b/libc/arch-x86/syscalls/ioprio_get.S
@@ -0,0 +1,26 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type ioprio_get, @function
+    .globl ioprio_get
+    .align 4
+
+ioprio_get:
+    pushl   %ebx
+    pushl   %ecx
+    mov     12(%esp), %ebx
+    mov     16(%esp), %ecx
+    movl    $__NR_ioprio_get, %eax
+    int     $0x80
+    cmpl    $-129, %eax
+    jb      1f
+    negl    %eax
+    pushl   %eax
+    call    __set_errno
+    addl    $4, %esp
+    orl     $-1, %eax
+1:
+    popl    %ecx
+    popl    %ebx
+    ret
diff --git a/libc/arch-x86/syscalls/ioprio_set.S b/libc/arch-x86/syscalls/ioprio_set.S
new file mode 100644
index 0000000..174d923
--- /dev/null
+++ b/libc/arch-x86/syscalls/ioprio_set.S
@@ -0,0 +1,29 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type ioprio_set, @function
+    .globl ioprio_set
+    .align 4
+
+ioprio_set:
+    pushl   %ebx
+    pushl   %ecx
+    pushl   %edx
+    mov     16(%esp), %ebx
+    mov     20(%esp), %ecx
+    mov     24(%esp), %edx
+    movl    $__NR_ioprio_set, %eax
+    int     $0x80
+    cmpl    $-129, %eax
+    jb      1f
+    negl    %eax
+    pushl   %eax
+    call    __set_errno
+    addl    $4, %esp
+    orl     $-1, %eax
+1:
+    popl    %edx
+    popl    %ecx
+    popl    %ebx
+    ret
diff --git a/libc/include/sys/linux-syscalls.h b/libc/include/sys/linux-syscalls.h
index 5d2b55e..c4e6e45 100644
--- a/libc/include/sys/linux-syscalls.h
+++ b/libc/include/sys/linux-syscalls.h
@@ -170,6 +170,8 @@
 #define __NR_getsockopt                   (__NR_SYSCALL_BASE + 295)
 #define __NR_sendmsg                      (__NR_SYSCALL_BASE + 296)
 #define __NR_recvmsg                      (__NR_SYSCALL_BASE + 297)
+#define __NR_ioprio_set                   (__NR_SYSCALL_BASE + 314)
+#define __NR_ioprio_get                   (__NR_SYSCALL_BASE + 315)
 #define __NR_epoll_create                 (__NR_SYSCALL_BASE + 250)
 #define __NR_epoll_ctl                    (__NR_SYSCALL_BASE + 251)
 #define __NR_epoll_wait                   (__NR_SYSCALL_BASE + 252)
@@ -210,6 +212,8 @@
 #define __NR_timer_delete                 (__NR_SYSCALL_BASE + 263)
 #define __NR_utimes                       (__NR_SYSCALL_BASE + 271)
 #define __NR_socketcall                   (__NR_SYSCALL_BASE + 102)
+#define __NR_ioprio_set                   (__NR_SYSCALL_BASE + 289)
+#define __NR_ioprio_get                   (__NR_SYSCALL_BASE + 290)
 #define __NR_epoll_create                 (__NR_SYSCALL_BASE + 254)
 #define __NR_epoll_ctl                    (__NR_SYSCALL_BASE + 255)
 #define __NR_epoll_wait                   (__NR_SYSCALL_BASE + 256)
@@ -264,6 +268,8 @@
 #define __NR_socketcall                   (__NR_SYSCALL_BASE + 102)
 #define __NR_socketcall                   (__NR_SYSCALL_BASE + 102)
 #define __NR___socketcall                 (__NR_SYSCALL_BASE + 102)
+#define __NR_ioprio_set                   (__NR_SYSCALL_BASE + 289)
+#define __NR_ioprio_get                   (__NR_SYSCALL_BASE + 290)
 #define __NR_epoll_create                 (__NR_SYSCALL_BASE + 254)
 #define __NR_epoll_ctl                    (__NR_SYSCALL_BASE + 255)
 #define __NR_epoll_wait                   (__NR_SYSCALL_BASE + 256)
diff --git a/libc/include/sys/linux-unistd.h b/libc/include/sys/linux-unistd.h
index 9a151d2..f48dbcd 100644
--- a/libc/include/sys/linux-unistd.h
+++ b/libc/include/sys/linux-unistd.h
@@ -180,6 +180,8 @@
 int              sched_get_priority_max (int policy);
 int              sched_get_priority_min (int policy);
 int              sched_rr_get_interval (pid_t pid, struct timespec *interval);
+int              ioprio_set (int which, int who, int ioprio);
+int              ioprio_get (int which, int who);
 int              uname (struct utsname *);
 pid_t            __wait4 (pid_t pid, int *status, int options, struct rusage *rusage);
 mode_t           umask (mode_t);