syscall.sh / x64 / recvmsg
recvmsg
receive a message from a socket
sys_recvmsg(int fd, struct user_msghdr *msg, unsigned int flags)| number | 47 (0x2f) |
|---|---|
| abi | 64 |
| entry point | sys_recvmsg |
| since | Linux 3.3 |
| man page | recvmsg(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
rax | 47, the syscall number |
rdi | int fd |
rsi | struct user_msghdr *msg |
rdx | unsigned int flags |
rax | the return value |
Then run syscall to enter the kernel.
Same syscall on other architectures
- x86 372
- arm64 212
- arm 297
- riscv64 212
- x32 1073742343
- loongarch64 212
- ppc64 342
- ppc 342
- s390x 372
- mips64 5046
- mipsn32 6046
- mipso32 4177
- alpha 113
- arc 212
- csky 212
- hexagon 212
- m68k 369
- microblaze 361
- nios2 212
- openrisc 212
- parisc 184
- sh 356
- sparc 113
- sparc64 113
- xtensa 107
Get this as JSON: https://api.syscall.sh/v2/syscalls/x64/recvmsg