SysGetFileSize

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API Reference

SysGetFileSize

Description

Get size of file without opening it.

Parameters

Name	Direction	Description
`filename`	in	Name/path of file.

Success

Non-negative value representing size of file in bytes.

Failure

Returns -1 if file cannot be accessed.

Usage example (Cross-references)

Usage examples (Cross-references)

In File.c:22:

    
        // get actual size of file
        i64 fsize = SysGetFileSize(filename);
        if (-1 == fsize) {
            LOG_ERROR("failed to get file size");

In Dir.c:190:

    
    // Cross-platform function to get file size
    i64 SysGetFileSize(const char *filename) {
    #ifdef _WIN32
        // Windows-specific code using GetFileSizeEx

Last updated on April 20, 2026

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