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Make important improvements

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- Fix preadv() and pwritev() for old distros
- Introduce _npassert() and _unassert() macros
- Prove that file locks work properly on Windows
- Support fcntl(F_DUPFD_CLOEXEC) on more systems
This commit is contained in:
Justine Tunney 2022-09-14 21:29:50 -07:00
parent 1ad2f530f9
commit 3f49889841
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GPG key ID: BE714B4575D6E328
130 changed files with 1225 additions and 431 deletions
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8
libc/calls/dup-nt.c
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@ -16,6 +16,7 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/state.internal.h"
@ -32,10 +33,9 @@
*/
textwindows int sys_dup_nt(int oldfd, int newfd, int flags, int start) {
int64_t rc, proc, handle;
// validate the api usage
if (oldfd < 0) return ebadf();
if (flags & ~O_CLOEXEC) return einval();
_unassert(oldfd >= 0);
_unassert(newfd >= -1);
_unassert(!(flags & ~O_CLOEXEC));
__fds_lock();