mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-05 02:38:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Make fixes and improvements

Browse source 
- Introduce __assert_disable global
- Improve strsignal() thread safety
- Make system call tracing thread safe
- Fix SO_RCVTIMEO / SO_SNDTIMEO on Windows
- Refactor DescribeFoo() functions into one place
- Fix fork() on Windows when TLS and MAP_STACK exist
- Round upwards in setsockopt(SO_RCVTIMEO) on Windows
- Disable futexes on OpenBSD which seem extremely broken
- Implement a better kludge for monotonic time on Windows
This commit is contained in:
Justine Tunney 2022-06-25 18:17:31 -07:00
parent 5d837c4e7c
commit fbc053e018
186 changed files with 1836 additions and 1325 deletions
Download patch file Download diff file Expand all files Collapse all files

20
libc/runtime/mmap.c
View file

@ -237,12 +237,6 @@ static textwindows dontinline noasan void *MapMemories(char *addr, size_t size,
static noasan inline void *Mmap(void *addr, size_t size, int prot, int flags,
int fd, int64_t off) {
#if defined(SYSDEBUG) && (_KERNTRACE || _NTTRACE)
if (IsWindows()) {
STRACE("mmap(%p, %'zu, %s, %s, %d, %'ld) → ...", addr, size,
DescribeProtFlags(prot), DescribeMapFlags(flags), fd, off);
}
#endif
char *p = addr;
struct DirectMap dm;
int a, b, i, f, m, n, x;
@ -405,7 +399,10 @@ static noasan inline void *Mmap(void *addr, size_t size, int prot, int flags,
if (p != MAP_FAILED) {
if (needguard) {
mprotect(p, PAGESIZE, PROT_NONE);
if (!IsWindows()) {
// make windows fork() code simpler
mprotect(p, PAGESIZE, PROT_NONE);
}
if (IsAsan()) {
__repstosb((void *)(((intptr_t)p >> 3) + 0x7fff8000),
kAsanStackOverflow, PAGESIZE / 8);
@ -474,10 +471,15 @@ static noasan inline void *Mmap(void *addr, size_t size, int prot, int flags,
* to be 64kb aligned too
* @return virtual base address of new mapping, or MAP_FAILED w/ errno
*/
noasan void *mmap(void *addr, size_t size, int prot, int flags, int fd,
int64_t off) {
void *mmap(void *addr, size_t size, int prot, int flags, int fd, int64_t off) {
void *res;
size_t toto;
#if defined(SYSDEBUG) && (_KERNTRACE || _NTTRACE)
if (IsWindows()) {
STRACE("mmap(%p, %'zu, %s, %s, %d, %'ld) → ...", addr, size,
DescribeProtFlags(prot), DescribeMapFlags(flags), fd, off);
}
#endif
__mmi_lock();
res = Mmap(addr, size, prot, flags, fd, off);
#if SYSDEBUG