syscall.sh / riscv64 / ftruncate
ftruncate
truncate a file to a specified length
sys_ftruncate(unsigned int fd, off_t length)| number | 46 (0x2e) |
|---|---|
| abi | 64 |
| entry point | sys_ftruncate |
| since | Linux 4.15 |
| man page | ftruncate(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
a7 | 46, the syscall number |
a0 | unsigned int fd |
a1 | off_t length |
a0 | the return value |
Then run ecall to enter the kernel.
Same syscall on other architectures
- x64 77
- x86 93
- arm64 46
- arm 93
- 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/riscv64/ftruncate