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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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12
libc/proc/cocmd.c
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@ -96,11 +96,19 @@ static wontreturn void UnsupportedSyntax(unsigned char c) {
}
static void Open(const char *path, int fd, int flags) {
close(fd);
if (open(path, flags, 0644) == -1) {
int tmpfd;
// use open+dup2 to support things like >/dev/stdout
if ((tmpfd = open(path, flags, 0644)) == -1) {
perror(path);
_Exit(1);
}
if (tmpfd != fd) {
if (dup2(tmpfd, fd) == -1) {
perror("dup2");
_Exit(1);
}
close(tmpfd);
}
}
static int SystemExec(void) {