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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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10
libc/calls/fixupnewfd.c
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@ -16,19 +16,19 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/calls/syscall_support-sysv.internal.h"
#include "libc/sysv/consts/f.h"
#include "libc/sysv/consts/fd.h"
#include "libc/sysv/consts/o.h"
/**
* Applies file descriptor fixups on XNU or old Linux.
* @see __fixupnewsockfd() for socket file descriptors
*/
// Applies file descriptor fixups on XNU or old Linux.
// See __fixupnewsockfd() for socket file descriptors.
int __fixupnewfd(int fd, int flags) {
if (fd != -1) {
if (flags & O_CLOEXEC) {
__sys_fcntl(fd, F_SETFD, FD_CLOEXEC);
_npassert(!__sys_fcntl(fd, F_SETFD, FD_CLOEXEC));
}
}
return fd;