utime.h — File access and time modification

The utime.h header file declares the utimbuf and utimbuf64 structures and the utime() and utime64() functions, which are used to set file access and modification times.

The utime() and utime64() function are supported only in a POSIX program.

Note: Feature test macro _LARGE_TIME_API is needed to expose the utimbuf64 structure.