syscall.sh / sh / msgsnd
msgsnd
System V message queue operations
sys_msgsnd(int msqid, struct msgbuf *msgp, size_t msgsz, int msgflg)| number | 400 (0x190) |
|---|---|
| abi | common |
| entry point | sys_msgsnd |
| since | Linux 5.1 |
| man page | msgsnd(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
r3 | 400, the syscall number |
r4 | int msqid |
r5 | struct msgbuf *msgp |
r6 | size_t msgsz |
r7 | int msgflg |
r0 | the return value |
Then run trapa #31 to enter the kernel.
Same syscall on other architectures
- x64 69
- x86 400
- arm64 189
- arm 301
- riscv64 189
- x32 1073741893
- loongarch64 189
- ppc64 400
- ppc 400
- s390x 400
- mips64 5067
- mipsn32 6067
- mipso32 4400
- alpha 203
- arc 189
- csky 189
- hexagon 189
- m68k 400
- microblaze 334
- nios2 189
- openrisc 189
- parisc 188
- sparc 400
- sparc64 400
- xtensa 167
Get this as JSON: https://api.syscall.sh/v2/syscalls/sh/msgsnd