| #include <stdio.h> |
| #include <stdlib.h> |
| #include "tests/sys_mman.h" |
| |
| int main(int argc, char **argv) |
| { |
| void *p1; |
| void *p2; |
| |
| if ( ( p1 = mmap( 0, 4096, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0 ) ) == MAP_FAILED ) |
| { |
| perror( "aligned mmap failed" ); |
| exit( 1 ); |
| } |
| |
| if ( munmap( p1, 4096 ) != 0 ) |
| { |
| perror( "aligned munmap failed" ); |
| exit( 1 ); |
| } |
| |
| // This fails because MAP_FIXED is specified and p1+1 isn't page-aligned. |
| // (On Linux, just non-page-alignment is enough for failure, but on Darwin |
| // MAP_FIXED has to also be specified.) |
| if ( ( p2 = mmap( p1 + 1, 4096, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0 ) ) == MAP_FAILED ) |
| { |
| perror( "unaligned mmap failed" ); |
| exit( 1 ); |
| } |
| |
| if ( munmap( p2, 4096 ) != 0 ) |
| { |
| perror( "unaligned munmap failed" ); |
| exit( 1 ); |
| } |
| |
| exit( 0 ); |
| } |