andre/cosmopolitan
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Support dirfd relative iops on Windows

Browse Source 
We always favor calling functions like openat(), fstatat(), etc. because
Linux, XNU, FreeBSD, and OpenBSD all elected to support them, while some
systems like Android love them so much, that they stopped supporting the
old interfaces.

This change ensures that when dirfd is actually a dirfd and not AT_FDCWD
we'll do the right thing on Windows NT. We use an API that's been around
since Vista to accomplish that.

This change also adds exponential backoff to chdir() on Windows since it
seems almost as flaky on Windows 7 as the rmdir() function.
This commit is contained in:
Justine Tunney
2021-01-30 01:49:43 -08:00
parent b8d26e2418
commit 417797d218
42 changed files with 361 additions and 241 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
libc/calls/stat.c
View File

@@ -16,29 +16,16 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/weaken.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/dce.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/at.h"
#include "libc/sysv/errfuns.h"
#include "libc/zipos/zipos.internal.h"
/**
* Returns information about thing.
*
* @param st is where result is stored
* @see S_ISDIR(st.st_mode), S_ISREG(), etc.
* @asyncsignalsafe
*/
int stat(const char *pathname, struct stat *st) {
struct ZiposUri zipname;
if (weaken(__zipos_stat) &&
weaken(__zipos_parseuri)(pathname, &zipname) != -1) {
return weaken(__zipos_stat)(&zipname, st);
} else if (!IsWindows()) {
return fstatat$sysv(AT_FDCWD, pathname, st, 0);
} else {
return stat$nt(pathname, st);
}
int stat(const char *path, struct stat *st) {
return fstatat(AT_FDCWD, path, st, 0);
}