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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
libc/proc/posix_spawnattr_getrlimit.c
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@ -31,8 +31,8 @@
* @raise EINVAL if `resource` is invalid or unsupported by host
* @raise ENOENT if `resource` is absent
*/
int posix_spawnattr_getrlimit(const posix_spawnattr_t *attr, int resource,
struct rlimit *rlim) {
int posix_spawnattr_getrlimit_np(const posix_spawnattr_t *attr, int resource,
struct rlimit *rlim) {
if (0 <= resource && resource < MIN(RLIM_NLIMITS, ARRAYLEN((*attr)->rlim))) {
if (((*attr)->rlimset & (1u << resource))) {
*rlim = (*attr)->rlim[resource];