syscall.sh / x64 / ftruncate
ftruncate
truncate a file to a specified length
sys_ftruncate(unsigned int fd, off_t length)| number | 77 (0x4d) |
|---|---|
| abi | common |
| entry point | sys_ftruncate |
| since | Linux 3.3 |
| man page | ftruncate(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
rax | 77, the syscall number |
rdi | unsigned int fd |
rsi | off_t length |
rax | the return value |
Then run syscall to enter the kernel.
Same syscall on other architectures
- x86 93
- arm64 46
- arm 93
- riscv64 46
- x32 1073741901
- loongarch64 46
- ppc64 93
- ppc 93
- s390x 93
- mips64 5075
- mipsn32 6075
- mipso32 4093
- alpha 130
- m68k 93
- microblaze 93
- parisc 93
- sh 93
- sparc 130
- sparc64 130
- xtensa 23
Get this as JSON: https://api.syscall.sh/v2/syscalls/x64/ftruncate