mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-24 19:40:28 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Improve system call wrappers

Browse source 
This change improves copy_file_range(), sendfile(), splice(), openpty(),
closefrom(), close_range(), fadvise() and posix_fadvise() in addition to
writing tests that confirm things like errno and seeking behavior across
platforms. We now less aggressively polyfill behavior with some of these
functions when the platform support isn't available. Please see:

https://justine.lol/cosmopolitan/functions.html
This commit is contained in:
Justine Tunney 2022-09-19 15:01:48 -07:00
parent 224c12f54d
commit c7a8cd21e9
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
89 changed files with 1151 additions and 414 deletions
Download patch file Download diff file Expand all files Collapse all files

6
libc/calls/fadvise-nt.c
View file

@ -21,6 +21,7 @@
#include "libc/calls/syscall_support-nt.internal.h"
#include "libc/nt/createfile.h"
#include "libc/nt/enum/fileflagandattributes.h"
#include "libc/nt/enum/filetype.h"
#include "libc/nt/files.h"
#include "libc/nt/runtime.h"
#include "libc/sysv/consts/madv.h"
@ -33,6 +34,7 @@ textwindows int sys_fadvise_nt(int fd, uint64_t offset, uint64_t len,
int rc, flags, mode;
uint32_t perm, share, attr;
if ((int64_t)len < 0) return einval();
if (!__isfdkind(fd, kFdFile)) return ebadf();
h1 = g_fds.p[fd].handle;
mode = g_fds.p[fd].mode;
@ -57,6 +59,10 @@ textwindows int sys_fadvise_nt(int fd, uint64_t offset, uint64_t len,
return -1;
}
if (GetFileType(h1) == kNtFileTypePipe) {
return espipe();
}
// MSDN says only these are allowed, otherwise it returns EINVAL.
attr &= kNtFileFlagBackupSemantics | kNtFileFlagDeleteOnClose |
kNtFileFlagNoBuffering | kNtFileFlagOpenNoRecall |