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Introduce posix_spawn_file_actions_addchdir_np()

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Justine Tunney 2023-10-11 20:26:28 -07:00
parent f92ad74e6b
commit 3a1f887928
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GPG key ID: BE714B4575D6E328
25 changed files with 446 additions and 748 deletions
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39
libc/calls/mkntpathat.c
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@ -27,37 +27,35 @@
#include "libc/sysv/consts/at.h"
#include "libc/sysv/errfuns.h"
static int __mkntpathat_impl(int dirfd, const char *path, int flags,
char16_t file[hasatleast PATH_MAX]) {
static textwindows int __mkntpathath_impl(int64_t dirhand, const char *path,
int flags,
char16_t file[hasatleast PATH_MAX]) {
size_t n;
char16_t dir[PATH_MAX];
uint32_t dirlen, filelen;
if (!isutf8(path, -1)) return eilseq(); // thwart overlong nul in conversion
if ((filelen = __mkntpath2(path, file, flags)) == -1) return -1;
if (!filelen) return enoent();
if (file[0] != u'\\' && dirfd != AT_FDCWD) { // ProTip: \\?\C:\foo
if (!__isfdkind(dirfd, kFdFile)) return ebadf();
dirlen = GetFinalPathNameByHandle(g_fds.p[dirfd].handle, dir, ARRAYLEN(dir),
if (file[0] != u'\\' && dirhand != AT_FDCWD) { // ProTip: \\?\C:\foo
dirlen = GetFinalPathNameByHandle(dirhand, dir, ARRAYLEN(dir),
kNtFileNameNormalized | kNtVolumeNameDos);
if (!dirlen) return __winerr();
if (dirlen + 1 + filelen + 1 > ARRAYLEN(dir)) {
STRACE("path too long: %#.*hs\\%#.*hs", dirlen, dir, filelen, file);
return enametoolong();
}
if (dirlen + 1 + filelen + 1 > ARRAYLEN(dir)) return enametoolong();
dir[dirlen] = u'\\';
memcpy(dir + dirlen + 1, file, (filelen + 1) * sizeof(char16_t));
memcpy(file, dir, (dirlen + 1 + filelen + 1) * sizeof(char16_t));
return dirlen + 1 + filelen;
memcpy(file, dir, ((n = dirlen + 1 + filelen) + 1) * sizeof(char16_t));
return __normntpath(file, n);
} else {
return filelen;
}
}
int __mkntpathat(int dirfd, const char *path, int flags,
char16_t file[hasatleast PATH_MAX]) {
textwindows int __mkntpathath(int64_t dirhand, const char *path, int flags,
char16_t file[hasatleast PATH_MAX]) {
// convert the path.
int len;
if ((len = __mkntpathat_impl(dirfd, path, flags, file)) == -1) {
if ((len = __mkntpathath_impl(dirhand, path, flags, file)) == -1) {
return -1;
}
@ -78,3 +76,16 @@ int __mkntpathat(int dirfd, const char *path, int flags,
return len;
}
textwindows int __mkntpathat(int dirfd, const char *path, int flags,
char16_t file[hasatleast PATH_MAX]) {
int64_t dirhand;
if (dirfd == AT_FDCWD) {
dirhand = AT_FDCWD;
} else if (__isfdkind(dirfd, kFdFile)) {
dirhand = g_fds.p[dirfd].handle;
} else {
return ebadf();
}
return __mkntpathath(dirhand, path, flags, file);
}