syscall.sh / x86 / setfsuid
setfsuid
set user identity used for filesystem checks
sys_setfsuid16(old_uid_t uid)| number | 138 (0x8a) |
|---|---|
| abi | i386 |
| entry point | sys_setfsuid16 |
| since | Linux 3.3 |
| man page | setfsuid(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
eax | 138, the syscall number |
ebx | old_uid_t uid |
eax | the return value |
Then run int 0x80 to enter the kernel.
Same syscall on other architectures
- x64 122
- arm64 151
- arm 138
- riscv64 151
- x32 1073741946
- loongarch64 151
- ppc64 138
- ppc 138
- s390x 215
- mips64 5120
- mipsn32 6120
- mipso32 4138
- alpha 325
- arc 151
- csky 151
- hexagon 151
- m68k 138
- microblaze 138
- nios2 151
- openrisc 151
- parisc 138
- sh 138
- sparc 228
- sparc64 228
- xtensa 180
Get this as JSON: https://api.syscall.sh/v2/syscalls/x86/setfsuid