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Fix handling of paths with dirfd on Windows

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This change fixes an issue with all system calls ending with *at(), when
the caller passes `dirfd != AT_FDCWD` and an absolute path. It's because
the old code was turning paths like C:\bin\ls into \\C:\bin\ls\C:\bin\ls
after being converted from paths like /C/bin/ls. I noticed this when the
Emacs dired mode stopped working. It's unclear if it's a regression with
Cosmopolitan Libc or if this was introduced by the Emacs v29 upgrade. It
also impacted posix_spawn() for which a newly minted example now exists.
This commit is contained in:
Justine Tunney 2024-09-01 16:35:48 -07:00
parent a089c07ddc
commit 39e7f24947
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GPG key ID: BE714B4575D6E328
10 changed files with 373 additions and 46 deletions
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4
tool/build/compile.c
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@ -529,7 +529,7 @@ void PlanResource(int resource, struct rlimit rlim) {
return;
rlim.rlim_cur = MIN(rlim.rlim_cur, prior.rlim_max);
rlim.rlim_max = MIN(rlim.rlim_max, prior.rlim_max);
posix_spawnattr_setrlimit(&spawnattr, resource, &rlim);
posix_spawnattr_setrlimit_np(&spawnattr, resource, &rlim);
}
void SetCpuLimit(int secs) {
@ -651,7 +651,7 @@ int Launch(void) {
posix_spawnattr_init(&spawnattr);
posix_spawnattr_setsigmask(&spawnattr, &savemask);
posix_spawnattr_setflags(&spawnattr,
POSIX_SPAWN_SETSIGMASK | POSIX_SPAWN_SETRLIMIT);
POSIX_SPAWN_SETSIGMASK | POSIX_SPAWN_SETRLIMIT_NP);
SetCpuLimit(cpuquota);
SetFszLimit(fszquota);
SetMemLimit(memquota);