The Linux Kernel API
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call_usermodehelper

Name

call_usermodehelper -- start a usermode application

Synopsis

int call_usermodehelper (char * path, char ** argv, char ** envp, int wait);

Arguments

path: pathname for the application
argv: null-terminated argument list
envp: null-terminated environment list
wait: wait for the application to finish and return status.

Description

Runs a user-space application. The application is started asynchronously if wait is not set, and runs as a child of keventd. (ie. it runs with full root capabilities).

Must be called from process context. Returns a negative error code if program was not execed successfully, or 0.

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