diff options
| -rw-r--r-- | src/mman/mmap.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/mman/mmap.c b/src/mman/mmap.c index 19caadbd..15924033 100644 --- a/src/mman/mmap.c +++ b/src/mman/mmap.c @@ -14,6 +14,7 @@ weak_alias(dummy, __vm_wait); void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off) { + long ret; if (off & OFF_MASK) { errno = EINVAL; return MAP_FAILED; @@ -26,10 +27,14 @@ void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off) __vm_wait(); } #ifdef SYS_mmap2 - return (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off/UNIT); + ret = __syscall(SYS_mmap2, start, len, prot, flags, fd, off/UNIT); #else - return (void *)syscall(SYS_mmap, start, len, prot, flags, fd, off); + ret = __syscall(SYS_mmap, start, len, prot, flags, fd, off); #endif + /* Fixup incorrect EPERM from kernel. */ + if (ret == -EPERM && !start && (flags&MAP_ANON) && !(flags&MAP_FIXED)) + ret = -ENOMEM; + return (void *)__syscall_ret(ret); } weak_alias(__mmap, mmap); |