recvmmsg on score

receive multiple messages on a socket

sys_recvmmsg(int fd, struct mmsghdr *mmsg, unsigned int vlen, unsigned int flags, struct timespec *timeout)
number243 (0xf3)
abicommon
entry pointsys_recvmmsg
sinceLinux 3.7 or earlier (3.7 is the first release scanned for score)
man pagerecvmmsg(2)
sourceelixir.bootlin.com

Registers

registervalue
r27243, the syscall number
r4int fd
r5struct mmsghdr *mmsg
r6unsigned int vlen
r7unsigned int flags
r8struct timespec *timeout
r4the return value

Then run syscall to enter the kernel.

r7 is the error flag and r4 then holds the positive error number.

This architecture was removed from the Linux kernel in Linux 4.17. The newest release with a syscall table here is Linux 4.16. The other removed architectures live on the historical architectures page.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/score/recvmmsg?kernel=all