diff options
| -rw-r--r-- | src/mman/mremap.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/mman/mremap.c b/src/mman/mremap.c index 1096ace1..ce4e8ea1 100644 --- a/src/mman/mremap.c +++ b/src/mman/mremap.c @@ -1,3 +1,4 @@ +#define _GNU_SOURCE #include <unistd.h> #include <sys/mman.h> #include <errno.h> @@ -6,19 +7,25 @@ #include "syscall.h" #include "libc.h" +static void dummy(void) { } +weak_alias(dummy, __vm_wait); + void *__mremap(void *old_addr, size_t old_len, size_t new_len, int flags, ...) { va_list ap; - void *new_addr; + void *new_addr = 0; if (new_len >= PTRDIFF_MAX) { errno = ENOMEM; return MAP_FAILED; } - va_start(ap, flags); - new_addr = va_arg(ap, void *); - va_end(ap); + if (flags & MREMAP_FIXED) { + __vm_wait(); + va_start(ap, flags); + new_addr = va_arg(ap, void *); + va_end(ap); + } return (void *)syscall(SYS_mremap, old_addr, old_len, new_len, flags, new_addr); } |