init: support other locations for krun_config #220
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slp
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When using "krun_set_exec", the arguments and environment variables are passed to the guest using the kernel command line. In addition to being limited in length, this is also only compatible with ASCII strings. libkrun is also capable or reading both arguments and environment variables from a JSON config file, which doesn't suffer from any of those limitations, so switch to using this approach instead. Depends on containers/libkrun#220 Signed-off-by: Sergio Lopez <[email protected]>
alyssarosenzweig
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Sep 26, 2024
| } else { | ||
| fd = open(CONFIG_FILE_PATH, O_RDONLY); | ||
| } | ||
|
|
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A bit cleaner, maybe:
config_file = getenv("KRUN_CONFIG");
if (!config_file) {
config_file = CONFIG_FILE_PATH;
}
fd = open(config_file, O_RDONLY);
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Or if you don't care about MSVC, open(getenv("KRUN_CONFIG") ?: CONFIG_FILE_PATH, O_RDONLY) is a one-liner with the elvis operator 🕺
slp
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Sep 26, 2024
When using "krun_set_exec", the arguments and environment variables are passed to the guest using the kernel command line. In addition to being limited in length, this is also only compatible with ASCII strings. libkrun is also capable or reading both arguments and environment variables from a JSON config file, which doesn't suffer from any of those limitations, so switch to using this approach instead. Depends on containers/libkrun#220 Signed-off-by: Sergio Lopez <[email protected]>
slp
added a commit
to slp/krun
that referenced
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Sep 26, 2024
When using "krun_set_exec", the arguments and environment variables are passed to the guest using the kernel command line. In addition to being limited in length, this is also only compatible with ASCII strings. libkrun is also capable or reading both arguments and environment variables from a JSON config file, which doesn't suffer from any of those limitations, so switch to using this approach instead. Depends on containers/libkrun#220 Signed-off-by: Sergio Lopez <[email protected]>
So far, the configuration was always expected to be in "/.krun_config.json". To support it to be located elsewhere, use the path stored in KRUN_CONFIG, falling back to the original location if not found there. Signed-off-by: Sergio Lopez <[email protected]> Reviewed-by: Alyssa Rosenzweig <[email protected]>
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slp
added a commit
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Sep 27, 2024
When using "krun_set_exec", the arguments and environment variables are passed to the guest using the kernel command line. In addition to being limited in length, this is also only compatible with ASCII strings. libkrun is also capable or reading both arguments and environment variables from a JSON config file, which doesn't suffer from any of those limitations, so switch to using this approach instead. Depends on containers/libkrun#220 Signed-off-by: Sergio Lopez <[email protected]>
alyssarosenzweig
pushed a commit
to AsahiLinux/muvm
that referenced
this pull request
Sep 27, 2024
When using "krun_set_exec", the arguments and environment variables are passed to the guest using the kernel command line. In addition to being limited in length, this is also only compatible with ASCII strings. libkrun is also capable or reading both arguments and environment variables from a JSON config file, which doesn't suffer from any of those limitations, so switch to using this approach instead. Depends on containers/libkrun#220 Signed-off-by: Sergio Lopez <[email protected]>
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So far, the configuration was always expected to be in "/.krun_config.json". To support it to be located elsewhere, use the path stored in KRUN_CONFIG, falling back to the original location if not found there.