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Kernel: Implement offset for lseek with SEEK_END

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Jelle Raaijmakers 2021-06-04 20:32:19 +02:00 • committed by Andreas Kling
parent f73bb164ad
commit 3dab9d0b5c
1 changed files with 3 additions and 1 deletions
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4
Kernel/FileSystem/FileDescription.cpp
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@ -136,7 +136,9 @@ KResultOr<off_t> FileDescription::seek(off_t offset, int whence)
case SEEK_END: case SEEK_END:
if (!metadata().is_valid()) if (!metadata().is_valid())
return EIO; return EIO;
new_offset = metadata().size; if (Checked<off_t>::addition_would_overflow(metadata().size, offset))
return EOVERFLOW;
new_offset = metadata().size + offset;
break; break;
default: default:
return EINVAL; return EINVAL;