diff options
Diffstat (limited to 'sys/compat/linux/linux_file.c')
| -rw-r--r-- | sys/compat/linux/linux_file.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c index d48132440dbc..565fc562fdf8 100644 --- a/sys/compat/linux/linux_file.c +++ b/sys/compat/linux/linux_file.c @@ -1565,3 +1565,44 @@ linux_fallocate(struct thread *td, struct linux_fallocate_args *args) return (kern_posix_fallocate(td, args->fd, args->offset, args->len)); } + +int +linux_copy_file_range(struct thread *td, struct linux_copy_file_range_args + *args) +{ + l_loff_t inoff, outoff, *inoffp, *outoffp; + int error, flags; + + /* + * copy_file_range(2) on Linux doesn't define any flags (yet), so is + * the native implementation. Enforce it. + */ + if (args->flags != 0) { + linux_msg(td, "copy_file_range unsupported flags 0x%x", + args->flags); + return (EINVAL); + } + flags = 0; + inoffp = outoffp = NULL; + if (args->off_in != NULL) { + error = copyin(args->off_in, &inoff, sizeof(l_loff_t)); + if (error != 0) + return (error); + inoffp = &inoff; + } + if (args->off_out != NULL) { + error = copyin(args->off_out, &outoff, sizeof(l_loff_t)); + if (error != 0) + return (error); + outoffp = &outoff; + } + + error = kern_copy_file_range(td, args->fd_in, inoffp, args->fd_out, + outoffp, args->len, flags); + if (error == 0 && args->off_in != NULL) + error = copyout(inoffp, args->off_in, sizeof(l_loff_t)); + if (error == 0 && args->off_out != NULL) + error = copyout(outoffp, args->off_out, sizeof(l_loff_t)); + return (error); +} + |