flock on score

apply or remove an advisory lock on an open file

sys_flock(unsigned int fd, unsigned int cmd)
number32 (0x20)
abicommon
entry pointsys_flock
sinceLinux 3.7 or earlier (3.7 is the first release scanned for score)
man pageflock(2)
sourceelixir.bootlin.com

Registers

registervalue
r2732, the syscall number
r4unsigned int fd
r5unsigned int cmd
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/flock?kernel=all