Name

access - check if a file is accessible

Synopsis

#include <unistd.h>

int access(const char* path, int mode);

Description

Check if a file at the given path exists and is accessible to the current user for the given mode. Valid flags for mode are:

• F_OK to check if the file is accessible at all,
• R_OK to check if the file can be read,
• W_OK to check if the file can be written to,
• X_OK to check if the file can be executed as a program.

Return value

If the file is indeed accessible for the specified mode, access() returns 0. Otherwise, it returns -1 and sets errno to describe the error.