libafl_qemu snapshot.rs file-descriptor feature-extension#3732
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seal9055 wants to merge 3 commits intoAFLplusplus:mainfrom
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libafl_qemu snapshot.rs file-descriptor feature-extension#3732seal9055 wants to merge 3 commits intoAFLplusplus:mainfrom
seal9055 wants to merge 3 commits intoAFLplusplus:mainfrom
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## libafl_qemu snapshot.rs feature-extension ## Description Added optional feature (enabled by default, can be disabled using `snapshot.disable_fd_tracking`), that tracks files that were either already opened at snapshot time (tracks its current seak-offset), or are opened during a fuzz-case. At reset time previously opened files have their offset reset using `seek`, and files opened during the fuzzcase are closed. Not doing this can easily lead to the fuzzer crashing due to too many files being open if the target creates a file during the testcase but doesn't close it before the reset. Also added additional syscalls for file-tracking. ## Checklist - [X] I have run `./scripts/precommit.sh` and addressed all comments
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libafl_qemu snapshot.rs feature-extension
Description
Added optional feature (enabled by default, can be disabled using
snapshot.disable_fd_tracking), that tracks files that were either already opened at snapshot time (tracks its current seak-offset), or are opened during a fuzz-case. At reset time previously opened files have their offset reset usingseek, and files opened during the fuzzcase are closed. Not doing this can easily lead to the fuzzer crashing due to too many files being open if the target creates a file during the testcase but doesn't close it before the reset.Also added additional syscalls for file-tracking.
Checklist
./scripts/precommit.shand addressed all comments