diff options
Diffstat (limited to 'Kernel/Syscalls/read.cpp')
| -rw-r--r-- | Kernel/Syscalls/read.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Kernel/Syscalls/read.cpp b/Kernel/Syscalls/read.cpp index 4dc7b0d15a..a001285925 100644 --- a/Kernel/Syscalls/read.cpp +++ b/Kernel/Syscalls/read.cpp @@ -90,7 +90,7 @@ ErrorOr<FlatPtr> Process::sys$read(int fd, Userspace<u8*> buffer, size_t size) return TRY(description->read(user_buffer.value(), size)); } -ErrorOr<FlatPtr> Process::sys$pread(int fd, Userspace<u8*> buffer, size_t size, off_t offset) +ErrorOr<FlatPtr> Process::sys$pread(int fd, Userspace<u8*> buffer, size_t size, Userspace<off_t*> userspace_offset) { VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this) REQUIRE_PROMISE(stdio); @@ -98,6 +98,8 @@ ErrorOr<FlatPtr> Process::sys$pread(int fd, Userspace<u8*> buffer, size_t size, return 0; if (size > NumericLimits<ssize_t>::max()) return EINVAL; + off_t offset; + TRY(copy_from_user(&offset, userspace_offset)); if (offset < 0) return EINVAL; dbgln_if(IO_DEBUG, "sys$pread({}, {}, {}, {})", fd, buffer.ptr(), size, offset); |