stackoverflow.com/questions/33…
> I have to pass 256Kb of text as an argument to the "aws sqs"
what, uhhh, what
> MAX_ARG_STRLEN is defined as 32 times the page size in linux/include/uapi/linux/binfmts.h:
> The default page size is 4 KB so you cannot pass arguments longer than 128 KB.
> I modified linux/include/uapi/linux/binfmts.h to #define MAX_ARG_STRLEN (PAGE_SIZE * 64), recompiled my kernel and now your code produces
casually patching the kernel to send a quarter megabyte as a *single* argument oh my god i'm laughing hard
kloenk
in reply to witch_t *navi • • •Laurent Bercot
in reply to kloenk • • •Back when 128 kB was the limit for argv+envp, Google was hitting it too because they passed all the configuration for their whole software stack on the command line as --long-option=value switches.
Their solution? Compress the command line. So every binary started by ungzipping argv[1] and parsing it to get the configuration.
The person explaining this to me saw my horrified face, and said with the perfect Hide The Pain Harold smile: "a series of individually completely rational and reasonable decisions led to this." and I have been thinking a lot about it since.