tools/bashreadline: Fix bashreadline#4903
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bashreadline1.mp4bashreadline2.mp4 |
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dagomez137
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Nov 28, 2024
This Pull Request fixes the issue where the bashreadline tool would lose the first bash command upon startup. At runtime, bash blocks at the readline function in bash::readline.c. Upon receiving the Enter key signal, it calls the readline_internal_teardown function to retrieve the user's input. Therefore, changing the hook function from readline to readline_internal_teardown resolves the issue of losing the first bash command after startup of bashreadline. The specific approach is to open the symbol table of bash and check if there is a symbol for readline_internal_teardown function. If not, continue to use the readline function as the hook position.
Mic92
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Jan 19, 2025
- we didn't provide the newly required elfutils python dependency, but we're only dealing with newer bashes so just use the new symbol - while here also default to using our libreadline as bash is configured to use it on nixos; this can still be overriden Link: iovisor/bcc#4903 Fixes: #328743
dagomez137
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Mar 18, 2025
This Pull Request fixes the issue where the bashreadline tool would lose the first bash command upon startup. At runtime, bash blocks at the readline function in bash::readline.c. Upon receiving the Enter key signal, it calls the readline_internal_teardown function to retrieve the user's input. Therefore, changing the hook function from readline to readline_internal_teardown resolves the issue of losing the first bash command after startup of bashreadline. The specific approach is to open the symbol table of bash and check if there is a symbol for readline_internal_teardown function. If not, continue to use the readline function as the hook position.
dagomez137
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Oct 9, 2025
This Pull Request fixes the issue where the bashreadline tool would lose the first bash command upon startup. At runtime, bash blocks at the readline function in bash::readline.c. Upon receiving the Enter key signal, it calls the readline_internal_teardown function to retrieve the user's input. Therefore, changing the hook function from readline to readline_internal_teardown resolves the issue of losing the first bash command after startup of bashreadline. The specific approach is to open the symbol table of bash and check if there is a symbol for readline_internal_teardown function. If not, continue to use the readline function as the hook position.
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This Pull Request fixes the issue where the bashreadline tool would lose the first bash command upon startup.
At runtime, bash blocks at the readline function in bash::readline.c. Upon receiving the Enter key signal, it calls the readline_internal_teardown function to retrieve the user's input. Therefore, changing the hook function from readline to readline_internal_teardown resolves the issue of losing the first bash command after startup of bashreadline.
The specific approach is to open the symbol table of bash and check if there is a symbol for readline_internal_teardown function. If not, continue to use the readline function as the hook position.