| 1 | #include <unistd.h> |
| 2 | #include <fcntl.h> |
| 3 | #include <errno.h> |
| 4 | #include <wasi/libc.h> |
| 5 | |
| 6 | int truncate(const char *path, off_t length) |
| 7 | { |
| 8 | int fd = __wasilibc_open_nomode(path, O_WRONLY | O_CLOEXEC | O_NOCTTY); |
| 9 | if (fd < 0) |
| 10 | return -1; |
| 11 | |
| 12 | int result = ftruncate(fd, length); |
| 13 | if (result != 0) { |
| 14 | int save_errno = errno; |
| 15 | (void)close(fd); |
| 16 | errno = save_errno; |
| 17 | return -1; |
| 18 | } |
| 19 | |
| 20 | return close(fd); |
| 21 | } |