vmsplice on score

splice user pages to/from a pipe

sys_vmsplice(int fd, const struct iovec *iov, unsigned long nr_segs, unsigned int flags)
number75 (0x4b)
abicommon
entry pointsys_vmsplice
sinceLinux 3.7 or earlier (3.7 is the first release scanned for score)
man pagevmsplice(2)
sourceelixir.bootlin.com

Registers

registervalue
r2775, the syscall number
r4int fd
r5const struct iovec *iov
r6unsigned long nr_segs
r7unsigned int flags
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/vmsplice?kernel=all