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Rewrite special file handling on Windows

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This change gets GNU grep working. What caused it to not work, is it
wouldn't write to an output file descriptor when its dev/ino equaled
/dev/null's. So now we invent special dev/ino values for these files
This commit is contained in:
Justine Tunney 2023-10-14 01:06:00 -07:00
parent aca2261cda
commit 2db2f40a98
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GPG key ID: BE714B4575D6E328
53 changed files with 485 additions and 299 deletions
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4
libc/calls/lseek-nt.c
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@ -62,7 +62,9 @@ static textwindows int64_t Seek(struct Fd *f, int64_t offset, int whence) {
}
textwindows int64_t sys_lseek_nt(int fd, int64_t offset, int whence) {
if (__isfdkind(fd, kFdFile)) {
if (__isfdkind(fd, kFdDevNull)) {
return offset;
} else if (__isfdkind(fd, kFdFile)) {
struct Fd *f = g_fds.p + fd;
int filetype = GetFileType(f->handle);
if (filetype != kNtFileTypePipe && filetype != kNtFileTypeChar) {