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This patch implements 'execve' in Genode's libc. The mechanism relies on the dynamic linker's ability to replace the loaded binary while keeping crucial libraries - in particular the libc - intact. The state outside the libc is wiped. For this reason, all libc internal state needed beyond the 'execve' call must be allocated on a heap separate from the application-owned malloc heap. E.g., libc-internal file-descriptor objects must not be allocated or refer to any memory object allocated from the malloc heap. Issue #3481 |
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