shmctl on score

System V shared memory control

sys_shmctl(int shmid, int cmd, struct shmid_ds *buf)
number195 (0xc3)
abicommon
kconfigCONFIG_SYSVIPC
familysysvipc see the whole family on score
entry pointsys_shmctl
sinceLinux 3.7 or earlier (3.7 is the first release scanned for score)
man pageshmctl(2)
sourceelixir.bootlin.com

Registers

registervalue
r27195, the syscall number
r4int shmid
r5int cmd
r6struct shmid_ds *buf
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/shmctl?kernel=all