Updated: April 19, 2023 |
Unmap previously mapped addresses, exercising more control than possible with munmap()
#include <sys/mman.h> int munmap_flags( void * addr, size_t len, unsigned flags );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The munmap_flags() function removes any mappings for pages in the address range starting at addr and continuing for len bytes, rounded up to the next multiple of the page size. Subsequent references to these pages cause a SIGSEGV signal to be set on the process.
If there are no mappings in the specified address range, then munmap_flags() has no effect.
If you specify 0 for the flags, munmap_flags() is the same as munmap().
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |