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Add KRUN_FS_ROOT_TAG define and document krun_set_root alternative #637

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Merged
mtjhrc merged 1 commit into from
Apr 15, 2026
Merged

Add KRUN_FS_ROOT_TAG define and document krun_set_root alternative #637

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9 changes: 9 additions & 0 deletions include/libkrun.h
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Original file line number Diff line number Diff line change
Expand Up @@ -97,9 +97,18 @@ int32_t krun_free_ctx(uint32_t ctx_id);
*/
int32_t krun_set_vm_config(uint32_t ctx_id, uint8_t num_vcpus, uint32_t ram_mib);

/**
* The virtiofs tag used for the root filesystem. Can be used with krun_add_virtiofs*
* for more control over root filesystem parameters (e.g. read-only, DAX window size).
*/
#define KRUN_FS_ROOT_TAG "/dev/root"

/**
* Sets the path to be use as root for the microVM. Not available in libkrun-SEV.
*
* For more control over the root filesystem (e.g. read-only, DAX window size),
* use krun_add_virtiofs3() with KRUN_FS_ROOT_TAG instead.
*
* Arguments:
* "ctx_id" - the configuration context ID.
* "root_path" - a null-terminated string representing the path to be used as root.
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