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LibC: mmap() should not interpret high addresses as errors, oops!

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This commit is contained in:
Andreas Kling 2019-02-16 15:34:31 +01:00
parent c3d36a5fe9
commit 0b1b21d622
1 changed files with 5 additions and 1 deletions
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6
LibC/mman.cpp
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@ -9,7 +9,11 @@ void* mmap(void* addr, size_t size, int prot, int flags, int fd, off_t offset)
{ {
Syscall::SC_mmap_params params { (dword)addr, size, prot, flags, fd, offset }; Syscall::SC_mmap_params params { (dword)addr, size, prot, flags, fd, offset };
int rc = syscall(SC_mmap, &params); int rc = syscall(SC_mmap, &params);
__RETURN_WITH_ERRNO(rc, (void*)rc, (void*)-1); if (rc < 0 && -rc < EMAXERRNO) {
errno = -rc;
return (void*)-1;
}
return (void*)rc;
} }
int munmap(void* addr, size_t size) int munmap(void* addr, size_t size)