sendfile64 on score

transfer data between file descriptors

sys_sendfile64(int out_fd, int in_fd, loff_t *offset, size_t count)
number71 (0x47)
abicommon
entry pointsys_sendfile64
sinceLinux 3.7 or earlier (3.7 is the first release scanned for score)
man pagesendfile64(2)
sourceelixir.bootlin.com

Registers

registervalue
r2771, the syscall number
r4int out_fd
r5int in_fd
r6loff_t *offset
r7size_t count
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/sendfile64?kernel=all