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Kernel: Use try_copy_kstring_from_user() in sys$mount()

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This commit is contained in:
Andreas Kling 2021-08-05 23:46:15 +02:00
parent 33adc3a42d
commit 3377cc74df
1 changed files with 9 additions and 6 deletions
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15
Kernel/Syscalls/mount.cpp
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@ -30,12 +30,15 @@ KResultOr<FlatPtr> Process::sys$mount(Userspace<const Syscall::SC_mount_params*>
return EFAULT; return EFAULT;
auto source_fd = params.source_fd; auto source_fd = params.source_fd;
auto target = copy_string_from_user(params.target); auto target_or_error = try_copy_kstring_from_user(params.target);
if (target.is_null()) if (target_or_error.is_error())
return EFAULT; return target_or_error.error();
auto fs_type = copy_string_from_user(params.fs_type); auto fs_type_or_error = try_copy_kstring_from_user(params.fs_type);
if (fs_type.is_null()) if (fs_type_or_error.is_error())
return EFAULT; return fs_type_or_error.error();
auto target = target_or_error.value()->view();
auto fs_type = fs_type_or_error.value()->view();
auto description = fds().file_description(source_fd); auto description = fds().file_description(source_fd);
if (!description.is_null()) if (!description.is_null())