syscall.sh / x86 / lseek
lseek
reposition read/write file offset
sys_lseek(unsigned int fd, off_t offset, unsigned int whence)| number | 19 (0x13) |
|---|---|
| abi | i386 |
| entry point | sys_lseek |
| since | Linux 3.3 |
| man page | lseek(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
eax | 19, the syscall number |
ebx | unsigned int fd |
ecx | off_t offset |
edx | unsigned int whence |
eax | the return value |
Then run int 0x80 to enter the kernel.
Same syscall on other architectures
- x64 8
- arm64 62
- arm 19
- riscv64 62
- x32 1073741832
- loongarch64 62
- ppc64 19
- ppc 19
- s390x 19
- mips64 5008
- mipsn32 6008
- mipso32 4019
- alpha 19
- m68k 19
- microblaze 19
- parisc 19
- sh 19
- sparc 19
- sparc64 19
- xtensa 15
Get this as JSON: https://api.syscall.sh/v2/syscalls/x86/lseek