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Kernel: Make copy_{from,to}_user() return KResult and use TRY()

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This makes EFAULT propagation flow much more naturally. :^)
This commit is contained in:
Andreas Kling 2021-09-05 17:38:37 +02:00
parent 9903f5c6ef
commit 48a0b31c47
57 changed files with 318 additions and 551 deletions
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7
Kernel/Syscalls/lseek.cpp
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@ -17,12 +17,9 @@ KResultOr<FlatPtr> Process::sys$lseek(int fd, Userspace<off_t*> userspace_offset
if (!description)
return EBADF;
off_t offset;
if (!copy_from_user(&offset, userspace_offset))
return EFAULT;
TRY(copy_from_user(&offset, userspace_offset));
auto seek_result = TRY(description->seek(offset, whence));
if (!copy_to_user(userspace_offset, &seek_result))
return EFAULT;
return KSuccess;
return copy_to_user(userspace_offset, &seek_result);
}
}