diff options
Diffstat (limited to 'libtest/mmap.c')
| -rw-r--r-- | libtest/mmap.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/libtest/mmap.c b/libtest/mmap.c index d8a2a60..62ef06e 100644 --- a/libtest/mmap.c +++ b/libtest/mmap.c @@ -2,33 +2,38 @@ #include "common.h" #ifndef TEST -#include <sys/syscall.h> - - #if !defined(__linux__) # errno "Don't know how to implement mmap(3), mumap(3), and mremap(3)" #endif +#ifdef SYS_mmap2 +# define IF_MMAP2(A) (A) +#else +# define IF_MMAP2(A) ((void)0) +#endif + +#if defined(__x86_64__) && defined(__ILP32__) /* x32 */ +# define SYSCALL_ARG_MAX LLONG_MAX +#else +# define SYSCALL_ARG_MAX LONG_MAX +#endif + + void * libtest_real_mmap(void *addr, size_t len, int prot, int flags, int fd, off_t off) { size_t pagesize = libtest_get_pagesize(); + IF_MMAP2(assert(pagesize == 4096u)); if (off < 0 || off % (off_t)pagesize) goto einval; - off /= (off_t)pagesize; + IF_MMAP2(off /= (off_t)pagesize); -#if defined(__x86_64__) && defined(__ILP32__) /* x32 */ - if (off > LLONG_MAX) + if (off > SYSCALL_ARG_MAX) goto einval; -#else - if (off > LONG_MAX) - goto einval; -#endif #ifdef SYS_mmap2 - assert(pagesize == 4096u); return (void *)syscall(SYS_mmap2, addr, len, prot, flags, fd, off); #else return (void *)syscall(SYS_mmap, addr, len, prot, flags, fd, off); |